Merge remote-tracking branch 'upstream/main' into hashtags_release

.github/workflows/build.yml

@@ -14,10 +14,10 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - name: Set up JDK 11
+      - name: Set up JDK 17
         uses: actions/setup-java@v1
         with:
-          java-version: 11
+          java-version: 17
 
       - name: Cache gradle
         uses: actions/cache@v1

.github/workflows/create-release.yml

@@ -12,10 +12,10 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v2
 
-      - name: Set up JDK 11
+      - name: Set up JDK 17
         uses: actions/setup-java@v1
         with:
-          java-version: 11
+          java-version: 17
 
       - name: Cache gradle
         uses: actions/cache@v1

README.md

@@ -85,7 +85,7 @@ Lastly, the user's account information (priv key/pub key) is stored in the Andro
 ## Setup
 
 Make sure to have the following pre-requisites installed:
-1. Java 11
+1. Java 17
 2. Android Studio
 3. Android 8.0+ Phone or Emulation setup
 

app/build.gradle

@@ -12,8 +12,8 @@ android {
         applicationId "com.vitorpamplona.amethyst"
         minSdk 26
         targetSdk 33
-        versionCode 118
+        versionCode 123
-        versionName "0.32.3"
+        versionName "0.34.1"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables {
@@ -57,12 +57,12 @@ android {
     }
 
     compileOptions {
-        sourceCompatibility JavaVersion.VERSION_11
+        sourceCompatibility JavaVersion.VERSION_17
-        targetCompatibility JavaVersion.VERSION_11
+        targetCompatibility JavaVersion.VERSION_17
     }
 
     kotlinOptions {
-        jvmTarget = '11'
+        jvmTarget = '17'
     }
 
     buildFeatures {
@@ -78,10 +78,14 @@ android {
             excludes += '/META-INF/{AL2.0,LGPL2.1}'
         }
     }
+    lint {
+        disable 'MissingTranslation'
+    }
+
 }
 
 dependencies {
-    implementation 'androidx.core:core-ktx:1.9.0'
+    implementation 'androidx.core:core-ktx:1.10.0'
     implementation 'androidx.activity:activity-compose:1.7.0-beta01'
     implementation "androidx.compose.ui:ui:$compose_ui_version"
     implementation "androidx.compose.ui:ui-tooling-preview:$compose_ui_version"
@@ -142,15 +146,14 @@ dependencies {
     // view svgs
     implementation "io.coil-kt:coil-svg:$coil_version"
 
+    // create blurhash
+    implementation group: 'io.trbl', name: 'blurhash', version: '1.0.0'
+
     // Rendering clickable text
     implementation "com.google.accompanist:accompanist-flowlayout:$accompanist_version"
     // Permission to upload pictures:
     implementation "com.google.accompanist:accompanist-permissions:$accompanist_version"
 
-    // tabs for user profiles
-    implementation "com.google.accompanist:accompanist-pager:$accompanist_version" // Pager
-    implementation "com.google.accompanist:accompanist-pager-indicators:$accompanist_version"
-
     // Parses URLs from Text:
     implementation "io.github.url-detector:url-detector:0.1.23"
 

app/src/main/AndroidManifest.xml

@@ -2,6 +2,8 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
 
+    <uses-feature android:name="android.hardware.camera" android:required="false" />
+
     <uses-permission android:name="android.permission.INTERNET"/>
     <uses-permission android:name="android.permission.READ_MEDIA_IMAGES"/>
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

app/src/main/java/com/vitorpamplona/amethyst/VideoCache.kt

@@ -18,7 +18,7 @@ object VideoCache {
 
     lateinit var cacheDataSourceFactory: CacheDataSource.Factory
 
-    fun get(context: Context): CacheDataSource.Factory {
+    fun init(context: Context) {
         if (!this::simpleCache.isInitialized) {
             exoDatabaseProvider = StandaloneDatabaseProvider(context)
 
@@ -35,7 +35,9 @@ object VideoCache {
                 )
                 .setFlags(CacheDataSource.FLAG_IGNORE_CACHE_ON_ERROR)
         }
+    }
 
+    fun get(): CacheDataSource.Factory {
         return cacheDataSourceFactory
     }
 }

app/src/main/java/com/vitorpamplona/amethyst/model/Account.kt

@@ -3,6 +3,7 @@ package com.vitorpamplona.amethyst.model
 import android.content.res.Resources
 import androidx.core.os.ConfigurationCompat
 import androidx.lifecycle.LiveData
+import com.vitorpamplona.amethyst.service.FileHeader
 import com.vitorpamplona.amethyst.service.model.*
 import com.vitorpamplona.amethyst.service.relays.Client
 import com.vitorpamplona.amethyst.service.relays.Constants
@@ -54,8 +55,14 @@ class Account(
     val liveLanguages: AccountLiveData = AccountLiveData(this)
     val saveable: AccountLiveData = AccountLiveData(this)
 
+    var userProfileCache: User? = null
+
     fun userProfile(): User {
-        return LocalCache.getOrCreateUser(loggedIn.pubKey.toHexKey())
+        return userProfileCache ?: run {
+            val myUser: User = LocalCache.getOrCreateUser(loggedIn.pubKey.toHexKey())
+            userProfileCache = myUser
+            myUser
+        }
     }
 
     fun followingChannels(): List<Channel> {
@@ -351,6 +358,25 @@ class Account(
         }
     }
 
+    fun sendHeader(headerInfo: FileHeader): Note? {
+        if (!isWriteable()) return null
+
+        val signedEvent = FileHeaderEvent.create(
+            url = headerInfo.url,
+            mimeType = headerInfo.mimeType,
+            hash = headerInfo.hash,
+            size = headerInfo.size.toString(),
+            blurhash = headerInfo.blurHash,
+            description = headerInfo.description,
+            privateKey = loggedIn.privKey!!
+        )
+
+        Client.send(signedEvent)
+        LocalCache.consume(signedEvent)
+
+        return LocalCache.notes[signedEvent.id]
+    }
+
     fun sendPost(message: String, replyTo: List<Note>?, mentions: List<User>?, tags: List<String>? = null) {
         if (!isWriteable()) return
 
@@ -722,11 +748,11 @@ class Account(
     fun isHidden(userHex: String) = userHex in hiddenUsers || userHex in transientHiddenUsers
 
     fun followingKeySet(): Set<HexKey> {
-        return userProfile().cachedFollowingKeySet() ?: emptySet()
+        return userProfile().cachedFollowingKeySet()
     }
 
     fun followingTagSet(): Set<HexKey> {
-        return userProfile().cachedFollowingTagSet() ?: emptySet()
+        return userProfile().cachedFollowingTagSet()
     }
 
     fun isAcceptable(user: User): Boolean {

app/src/main/java/com/vitorpamplona/amethyst/model/LocalCache.kt

@@ -6,7 +6,7 @@ import com.fasterxml.jackson.databind.DeserializationFeature
 import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
 import com.vitorpamplona.amethyst.service.model.*
 import com.vitorpamplona.amethyst.service.relays.Relay
-import com.vitorpamplona.amethyst.ui.components.BundledUpdate
+import com.vitorpamplona.amethyst.ui.components.BundledInsert
 import fr.acinq.secp256k1.Hex
 import kotlinx.coroutines.*
 import nostr.postr.toNpub
@@ -189,7 +189,7 @@ object LocalCache {
             it.addReply(note)
         }
 
-        refreshObservers()
+        refreshObservers(note)
     }
 
     fun consume(event: LongTextNoteEvent, relay: Relay?) {
@@ -218,7 +218,7 @@ object LocalCache {
 
             author.addNote(note)
 
-            refreshObservers()
+            refreshObservers(note)
         }
     }
 
@@ -255,7 +255,7 @@ object LocalCache {
             it.addReply(note)
         }
 
-        refreshObservers()
+        refreshObservers(note)
     }
 
     fun consume(event: BadgeDefinitionEvent) {
@@ -268,7 +268,7 @@ object LocalCache {
         if (event.createdAt > (note.createdAt() ?: 0)) {
             note.loadEvent(event, author, emptyList<Note>())
 
-            refreshObservers()
+            refreshObservers(note)
         }
     }
 
@@ -286,8 +286,6 @@ object LocalCache {
             note.loadEvent(event, author, replyTo)
 
             author.updateAcceptedBadges(note)
-
-            refreshObservers()
         }
     }
 
@@ -309,7 +307,7 @@ object LocalCache {
             it.addReply(note)
         }
 
-        refreshObservers()
+        refreshObservers(note)
     }
 
     @Suppress("UNUSED_PARAMETER")
@@ -353,7 +351,7 @@ object LocalCache {
             recipient.addMessage(author, note)
         }
 
-        refreshObservers()
+        refreshObservers(note)
     }
 
     fun consume(event: DeletionEvent) {
@@ -401,7 +399,7 @@ object LocalCache {
         }
 
         if (deletedAtLeastOne) {
-            live.invalidateData()
+            // refreshObservers()
         }
     }
 
@@ -427,7 +425,7 @@ object LocalCache {
             it.addBoost(note)
         }
 
-        refreshObservers()
+        refreshObservers(note)
     }
 
     fun consume(event: ReactionEvent) {
@@ -465,6 +463,8 @@ object LocalCache {
                 it.addReport(note)
             }
         }
+
+        refreshObservers(note)
     }
 
     fun consume(event: ReportEvent, relay: Relay?) {
@@ -495,6 +495,8 @@ object LocalCache {
         repliesTo.forEach {
             it.addReport(note)
         }
+
+        refreshObservers(note)
     }
 
     fun consume(event: ChannelCreateEvent) {
@@ -511,7 +513,7 @@ object LocalCache {
             oldChannel.addNote(note)
             note.loadEvent(event, author, emptyList())
 
-            refreshObservers()
+            refreshObservers(note)
         }
     }
 
@@ -531,7 +533,7 @@ object LocalCache {
                 oldChannel.addNote(note)
                 note.loadEvent(event, author, emptyList())
 
-                refreshObservers()
+                refreshObservers(note)
             }
         } else {
             // Log.d("MT","Relay sent a previous Metadata Event ${oldUser.toBestDisplayName()} ${formattedDateTime(event.createdAt)} > ${formattedDateTime(oldUser.updatedAt)}")
@@ -578,7 +580,7 @@ object LocalCache {
             it.addReply(note)
         }
 
-        refreshObservers()
+        refreshObservers(note)
     }
 
     @Suppress("UNUSED_PARAMETER")
@@ -595,7 +597,7 @@ object LocalCache {
         // Already processed this event.
         if (note.event != null) return
 
-        val zapRequest = event.containedPost()?.id?.let { getOrCreateNote(it) }
+        val zapRequest = event.zapRequest?.id?.let { getOrCreateNote(it) }
 
         val author = getOrCreateUser(event.pubKey)
         val mentions = event.zappedAuthor().mapNotNull { checkGetOrCreateUser(it) }
@@ -620,6 +622,8 @@ object LocalCache {
         mentions.forEach {
             it.addZap(zapRequest, note)
         }
+
+        refreshObservers(note)
     }
 
     fun consume(event: LnZapRequestEvent) {
@@ -643,6 +647,21 @@ object LocalCache {
         mentions.forEach {
             it.addZap(note, null)
         }
+
+        refreshObservers(note)
+    }
+
+    fun consume(event: FileHeaderEvent) {
+        val note = getOrCreateNote(event.id)
+
+        // Already processed this event.
+        if (note.event != null) return
+
+        val author = getOrCreateUser(event.pubKey)
+
+        note.loadEvent(event, author, emptyList())
+
+        refreshObservers(note)
     }
 
     fun findUsersStartingWith(username: String): List<User> {
@@ -694,11 +713,6 @@ object LocalCache {
                 notes.remove(it.idHex)
                 // Doesn't need to clean up the replies and mentions.. Too small to matter.
 
-                // reverts the add
-                val mentions =
-                    it.event?.tags()?.filter { it.firstOrNull() == "p" }?.mapNotNull { it.getOrNull(1) }
-                        ?.mapNotNull { checkGetOrCreateUser(it) }
-
                 // Counts the replies
                 it.replyTo?.forEach { _ ->
                     it.removeReply(it)
@@ -749,30 +763,23 @@ object LocalCache {
     }
 
     // Observers line up here.
-    val live: LocalCacheLiveData = LocalCacheLiveData(this)
+    val live: LocalCacheLiveData = LocalCacheLiveData()
 
-    private fun refreshObservers() {
+    private fun refreshObservers(newNote: Note) {
-        live.invalidateData()
+        live.invalidateData(newNote)
     }
 }
 
-class LocalCacheLiveData(val cache: LocalCache) :
+class LocalCacheLiveData : LiveData<Set<Note>>(setOf<Note>()) {
-    LiveData<LocalCacheState>(LocalCacheState(cache)) {
 
     // Refreshes observers in batches.
-    private val bundler = BundledUpdate(300, Dispatchers.Main) {
+    private val bundler = BundledInsert<Note>(300, Dispatchers.Main)
-        if (hasActiveObservers()) {
+
-            refresh()
+    fun invalidateData(newNote: Note) {
+        bundler.invalidateList(newNote) { bundledNewNotes ->
+            if (hasActiveObservers()) {
+                postValue(bundledNewNotes)
+            }
         }
     }
-
-    fun invalidateData() {
-        bundler.invalidate()
-    }
-
-    private fun refresh() {
-        postValue(LocalCacheState(cache))
-    }
 }
-
-class LocalCacheState(val cache: LocalCache)

app/src/main/java/com/vitorpamplona/amethyst/model/Note.kt

@@ -53,13 +53,14 @@ open class Note(val idHex: String) {
     open fun idNote() = id().toNote()
     open fun idDisplayNote() = idNote().toShortenHex()
 
-    fun channel(): Channel? {
+    fun channelHex(): HexKey? {
-        val channelHex =
+        return (event as? ChannelMessageEvent)?.channel()
-            (event as? ChannelMessageEvent)?.channel()
+            ?: (event as? ChannelMetadataEvent)?.channel()
-                ?: (event as? ChannelMetadataEvent)?.channel()
+            ?: (event as? ChannelCreateEvent)?.id
-                ?: (event as? ChannelCreateEvent)?.id
+    }
 
-        return channelHex?.let { LocalCache.checkGetOrCreateChannel(it) }
+    fun channel(): Channel? {
+        return channelHex()?.let { LocalCache.checkGetOrCreateChannel(it) }
     }
 
     open fun address(): ATag? = null

app/src/main/java/com/vitorpamplona/amethyst/model/User.kt

@@ -295,7 +295,7 @@ class User(val pubkeyHex: String) {
     fun hasSentMessagesTo(user: User?): Boolean {
         val messagesToUser = privateChatrooms[user] ?: return false
 
-        return messagesToUser.roomMessages.any { this == it.author }
+        return messagesToUser.roomMessages.any { this === it.author }
     }
 
     fun hasReport(loggedIn: User, type: ReportEvent.ReportType): Boolean {

app/src/main/java/com/vitorpamplona/amethyst/service/BlurHashDecoder.kt

@@ -0,0 +1,203 @@
+package com.vitorpamplona.amethyst.service
+
+import android.graphics.Bitmap
+import android.graphics.Color
+import kotlin.math.cos
+import kotlin.math.pow
+import kotlin.math.withSign
+
+object BlurHashDecoder {
+
+    // cache Math.cos() calculations to improve performance.
+    // The number of calculations can be huge for many bitmaps: width * height * numCompX * numCompY * 2 * nBitmaps
+    // the cache is enabled by default, it is recommended to disable it only when just a few images are displayed
+    private val cacheCosinesX = HashMap<Int, DoubleArray>()
+    private val cacheCosinesY = HashMap<Int, DoubleArray>()
+
+    /**
+     * Clear calculations stored in memory cache.
+     * The cache is not big, but will increase when many image sizes are used,
+     * if the app needs memory it is recommended to clear it.
+     */
+    fun clearCache() {
+        cacheCosinesX.clear()
+        cacheCosinesY.clear()
+    }
+
+    /**
+     * Returns width/height
+     */
+    fun aspectRatio(blurHash: String?): Float? {
+        if (blurHash == null || blurHash.length < 6) {
+            return null
+        }
+        val numCompEnc = decode83(blurHash, 0, 1)
+        val numCompX = (numCompEnc % 9) + 1
+        val numCompY = (numCompEnc / 9) + 1
+        if (blurHash.length != 4 + 2 * numCompX * numCompY) {
+            return null
+        }
+
+        return numCompX.toFloat() / numCompY.toFloat()
+    }
+
+    /**
+     * Decode a blur hash into a new bitmap.
+     *
+     * @param useCache use in memory cache for the calculated math, reused by images with same size.
+     *                 if the cache does not exist yet it will be created and populated with new calculations.
+     *                 By default it is true.
+     */
+    fun decode(blurHash: String?, width: Int, height: Int, punch: Float = 1f, useCache: Boolean = true): Bitmap? {
+        if (blurHash == null || blurHash.length < 6) {
+            return null
+        }
+        val numCompEnc = decode83(blurHash, 0, 1)
+        val numCompX = (numCompEnc % 9) + 1
+        val numCompY = (numCompEnc / 9) + 1
+        if (blurHash.length != 4 + 2 * numCompX * numCompY) {
+            return null
+        }
+        val maxAcEnc = decode83(blurHash, 1, 2)
+        val maxAc = (maxAcEnc + 1) / 166f
+        val colors = Array(numCompX * numCompY) { i ->
+            if (i == 0) {
+                val colorEnc = decode83(blurHash, 2, 6)
+                decodeDc(colorEnc)
+            } else {
+                val from = 4 + i * 2
+                val colorEnc = decode83(blurHash, from, from + 2)
+                decodeAc(colorEnc, maxAc * punch)
+            }
+        }
+        return composeBitmap(width, height, numCompX, numCompY, colors, useCache)
+    }
+
+    private fun decode83(str: String, from: Int = 0, to: Int = str.length): Int {
+        var result = 0
+        for (i in from until to) {
+            val index = charMap[str[i]] ?: -1
+            if (index != -1) {
+                result = result * 83 + index
+            }
+        }
+        return result
+    }
+
+    private fun decodeDc(colorEnc: Int): FloatArray {
+        val r = colorEnc shr 16
+        val g = (colorEnc shr 8) and 255
+        val b = colorEnc and 255
+        return floatArrayOf(srgbToLinear(r), srgbToLinear(g), srgbToLinear(b))
+    }
+
+    private fun srgbToLinear(colorEnc: Int): Float {
+        val v = colorEnc / 255f
+        return if (v <= 0.04045f) {
+            (v / 12.92f)
+        } else {
+            ((v + 0.055f) / 1.055f).pow(2.4f)
+        }
+    }
+
+    private fun decodeAc(value: Int, maxAc: Float): FloatArray {
+        val r = value / (19 * 19)
+        val g = (value / 19) % 19
+        val b = value % 19
+        return floatArrayOf(
+            signedPow2((r - 9) / 9.0f) * maxAc,
+            signedPow2((g - 9) / 9.0f) * maxAc,
+            signedPow2((b - 9) / 9.0f) * maxAc
+        )
+    }
+
+    private fun signedPow2(value: Float) = value.pow(2f).withSign(value)
+
+    private fun composeBitmap(
+        width: Int,
+        height: Int,
+        numCompX: Int,
+        numCompY: Int,
+        colors: Array<FloatArray>,
+        useCache: Boolean
+    ): Bitmap {
+        // use an array for better performance when writing pixel colors
+        val imageArray = IntArray(width * height)
+        val calculateCosX = !useCache || !cacheCosinesX.containsKey(width * numCompX)
+        val cosinesX = getArrayForCosinesX(calculateCosX, width, numCompX)
+        val calculateCosY = !useCache || !cacheCosinesY.containsKey(height * numCompY)
+        val cosinesY = getArrayForCosinesY(calculateCosY, height, numCompY)
+        for (y in 0 until height) {
+            for (x in 0 until width) {
+                var r = 0f
+                var g = 0f
+                var b = 0f
+                for (j in 0 until numCompY) {
+                    for (i in 0 until numCompX) {
+                        val cosX = cosinesX.getCos(calculateCosX, i, numCompX, x, width)
+                        val cosY = cosinesY.getCos(calculateCosY, j, numCompY, y, height)
+                        val basis = (cosX * cosY).toFloat()
+                        val color = colors[j * numCompX + i]
+                        r += color[0] * basis
+                        g += color[1] * basis
+                        b += color[2] * basis
+                    }
+                }
+                imageArray[x + width * y] = Color.rgb(linearToSrgb(r), linearToSrgb(g), linearToSrgb(b))
+            }
+        }
+        return Bitmap.createBitmap(imageArray, width, height, Bitmap.Config.ARGB_8888)
+    }
+
+    private fun getArrayForCosinesY(calculate: Boolean, height: Int, numCompY: Int) = when {
+        calculate -> {
+            DoubleArray(height * numCompY).also {
+                cacheCosinesY[height * numCompY] = it
+            }
+        }
+        else -> {
+            cacheCosinesY[height * numCompY]!!
+        }
+    }
+
+    private fun getArrayForCosinesX(calculate: Boolean, width: Int, numCompX: Int) = when {
+        calculate -> {
+            DoubleArray(width * numCompX).also {
+                cacheCosinesX[width * numCompX] = it
+            }
+        }
+        else -> cacheCosinesX[width * numCompX]!!
+    }
+
+    private fun DoubleArray.getCos(
+        calculate: Boolean,
+        x: Int,
+        numComp: Int,
+        y: Int,
+        size: Int
+    ): Double {
+        if (calculate) {
+            this[x + numComp * y] = cos(Math.PI * y * x / size)
+        }
+        return this[x + numComp * y]
+    }
+
+    private fun linearToSrgb(value: Float): Int {
+        val v = value.coerceIn(0f, 1f)
+        return if (v <= 0.0031308f) {
+            (v * 12.92f * 255f + 0.5f).toInt()
+        } else {
+            ((1.055f * v.pow(1 / 2.4f) - 0.055f) * 255 + 0.5f).toInt()
+        }
+    }
+
+    private val charMap = listOf(
+        '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G',
+        'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
+        'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
+        'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '#', '$', '%', '*', '+', ',',
+        '-', '.', ':', ';', '=', '?', '@', '[', ']', '^', '_', '{', '|', '}', '~'
+    )
+        .mapIndexed { i, c -> c to i }
+        .toMap()
+}

app/src/main/java/com/vitorpamplona/amethyst/service/BlurHashImage.kt

@@ -0,0 +1,65 @@
+package com.vitorpamplona.amethyst.service
+
+import android.content.Context
+import android.net.Uri
+import androidx.core.graphics.drawable.toDrawable
+import coil.ImageLoader
+import coil.decode.DataSource
+import coil.fetch.DrawableResult
+import coil.fetch.FetchResult
+import coil.fetch.Fetcher
+import coil.request.ImageRequest
+import coil.request.Options
+import java.net.URLDecoder
+import java.net.URLEncoder
+import kotlin.math.roundToInt
+
+class BlurHashFetcher(
+    private val options: Options,
+    private val data: Uri
+) : Fetcher {
+
+    override suspend fun fetch(): FetchResult {
+        val encodedHash = data.toString().removePrefix("bluehash:")
+        val hash = URLDecoder.decode(encodedHash, "utf-8")
+
+        val aspectRatio = BlurHashDecoder.aspectRatio(hash) ?: 1.0f
+
+        val preferredWidth = 100
+
+        val bitmap = BlurHashDecoder.decode(
+            hash,
+            preferredWidth,
+            (preferredWidth * (1 / aspectRatio)).roundToInt()
+        )
+
+        if (bitmap == null) {
+            throw Exception("Unable to convert Bluehash $hash")
+        }
+
+        return DrawableResult(
+            drawable = bitmap.toDrawable(options.context.resources),
+            isSampled = false,
+            dataSource = DataSource.MEMORY
+        )
+    }
+
+    object Factory : Fetcher.Factory<Uri> {
+        override fun create(data: Uri, options: Options, imageLoader: ImageLoader): Fetcher {
+            return BlurHashFetcher(options, data)
+        }
+    }
+}
+
+object BlurHashRequester {
+    fun imageRequest(context: Context, message: String): ImageRequest {
+        val encodedMessage = URLEncoder.encode(message, "utf-8")
+
+        return ImageRequest
+            .Builder(context)
+            .data("bluehash:$encodedMessage")
+            .fetcherFactory(BlurHashFetcher.Factory)
+            .crossfade(100)
+            .build()
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/FileHeader.kt

@@ -0,0 +1,65 @@
+package com.vitorpamplona.amethyst.service
+
+import android.graphics.Bitmap
+import android.graphics.BitmapFactory
+import android.util.Log
+import com.vitorpamplona.amethyst.model.toHexKey
+import io.trbl.blurhash.BlurHash
+import java.net.URL
+import java.security.MessageDigest
+import kotlin.math.roundToInt
+
+class FileHeader(
+    val url: String,
+    val mimeType: String?,
+    val hash: String,
+    val size: Int,
+    val blurHash: String?,
+    val description: String? = null
+) {
+    companion object {
+        fun prepare(fileUrl: String, mimeType: String?, onReady: (FileHeader) -> Unit, onError: () -> Unit) {
+            try {
+                val imageData = URL(fileUrl).readBytes()
+                val sha256 = MessageDigest.getInstance("SHA-256")
+
+                val hash = sha256.digest(imageData).toHexKey()
+                val size = imageData.size
+
+                val blurHash = if (mimeType?.startsWith("image/") == true) {
+                    val opt = BitmapFactory.Options()
+                    opt.inPreferredConfig = Bitmap.Config.ARGB_8888
+                    val mBitmap = BitmapFactory.decodeByteArray(imageData, 0, imageData.size, opt)
+
+                    val intArray = IntArray(mBitmap.width * mBitmap.height)
+                    mBitmap.getPixels(
+                        intArray,
+                        0,
+                        mBitmap.width,
+                        0,
+                        0,
+                        mBitmap.width,
+                        mBitmap.height
+                    )
+
+                    val aspectRatio = (mBitmap.width).toFloat() / (mBitmap.height).toFloat()
+
+                    if (aspectRatio > 1) {
+                        BlurHash.encode(intArray, mBitmap.width, mBitmap.height, 9, (9 * (1 / aspectRatio)).roundToInt())
+                    } else if (aspectRatio < 1) {
+                        BlurHash.encode(intArray, mBitmap.width, mBitmap.height, (9 * aspectRatio).roundToInt(), 9)
+                    } else {
+                        BlurHash.encode(intArray, mBitmap.width, mBitmap.height, 4, 4)
+                    }
+                } else {
+                    null
+                }
+
+                onReady(FileHeader(fileUrl, mimeType, hash, size, blurHash, ""))
+            } catch (e: Exception) {
+                Log.e("ImageDownload", "Couldn't convert image in to File Header: ${e.message}")
+                onError()
+            }
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/NostrDataSource.kt

@@ -75,8 +75,9 @@ abstract class NostrDataSource(val debugName: String) {
                         is ContactListEvent -> LocalCache.consume(event)
                         is DeletionEvent -> LocalCache.consume(event)
 
+                        is FileHeaderEvent -> LocalCache.consume(event)
                         is LnZapEvent -> {
-                            event.containedPost()?.let { onEvent(it, subscriptionId, relay) }
+                            event.zapRequest?.let { onEvent(it, subscriptionId, relay) }
                             LocalCache.consume(event)
                         }
                         is LnZapRequestEvent -> LocalCache.consume(event)
@@ -154,7 +155,7 @@ abstract class NostrDataSource(val debugName: String) {
 
     // Refreshes observers in batches.
     private val bundler = BundledUpdate(250, Dispatchers.IO) {
-        println("DataSource: ${this.javaClass.simpleName} InvalidateFilters")
+        // println("DataSource: ${this.javaClass.simpleName} InvalidateFilters")
 
         // adds the time to perform the refresh into this delay
         // holding off new updates in case of heavy refresh routines.

app/src/main/java/com/vitorpamplona/amethyst/service/NostrHashtagDataSource.kt

@@ -17,7 +17,14 @@ object NostrHashtagDataSource : NostrDataSource("SingleHashtagFeed") {
         return TypedFilter(
             types = FeedType.values().toSet(),
             filter = JsonFilter(
-                tags = mapOf("t" to listOf(hashToLoad, hashToLoad.lowercase(), hashToLoad.uppercase(), hashToLoad.capitalize())),
+                tags = mapOf(
+                    "t" to listOf(
+                        hashToLoad,
+                        hashToLoad.lowercase(),
+                        hashToLoad.uppercase(),
+                        hashToLoad.capitalize()
+                    )
+                ),
                 kinds = listOf(TextNoteEvent.kind, ChannelMessageEvent.kind, LongTextNoteEvent.kind),
                 limit = 200
             )

app/src/main/java/com/vitorpamplona/amethyst/service/NostrSingleEventDataSource.kt

@@ -7,7 +7,6 @@ import com.vitorpamplona.amethyst.service.relays.EOSETime
 import com.vitorpamplona.amethyst.service.relays.FeedType
 import com.vitorpamplona.amethyst.service.relays.JsonFilter
 import com.vitorpamplona.amethyst.service.relays.TypedFilter
-import java.util.Date
 
 object NostrSingleEventDataSource : NostrDataSource("SingleEventFeed") {
     private var eventsToWatch = setOf<Note>()
@@ -20,8 +19,6 @@ object NostrSingleEventDataSource : NostrDataSource("SingleEventFeed") {
             return null
         }
 
-        val now = Date().time / 1000
-
         return addressesToWatch.mapNotNull {
             it.address()?.let { aTag ->
                 TypedFilter(
@@ -49,8 +46,6 @@ object NostrSingleEventDataSource : NostrDataSource("SingleEventFeed") {
             return null
         }
 
-        val now = Date().time / 1000
-
         return addressesToWatch.mapNotNull {
             it.address()?.let { aTag ->
                 TypedFilter(
@@ -116,9 +111,12 @@ object NostrSingleEventDataSource : NostrDataSource("SingleEventFeed") {
                 types = FeedType.values().toSet(),
                 filter = JsonFilter(
                     kinds = listOf(
-                        TextNoteEvent.kind, LongTextNoteEvent.kind, ReactionEvent.kind, RepostEvent.kind, LnZapEvent.kind, LnZapRequestEvent.kind,
+                        TextNoteEvent.kind, LongTextNoteEvent.kind, PollNoteEvent.kind,
-                        ChannelMessageEvent.kind, ChannelCreateEvent.kind, ChannelMetadataEvent.kind, BadgeDefinitionEvent.kind, BadgeAwardEvent.kind, BadgeProfilesEvent.kind,
+                        ReactionEvent.kind, RepostEvent.kind,
-                        PollNoteEvent.kind, PrivateDmEvent.kind
+                        LnZapEvent.kind, LnZapRequestEvent.kind,
+                        ChannelMessageEvent.kind, ChannelCreateEvent.kind, ChannelMetadataEvent.kind,
+                        BadgeDefinitionEvent.kind, BadgeAwardEvent.kind, BadgeProfilesEvent.kind,
+                        PrivateDmEvent.kind, FileHeaderEvent.kind
                     ),
                     ids = interestedEvents.toList()
                 )

app/src/main/java/com/vitorpamplona/amethyst/service/NostrThreadDataSource.kt

@@ -25,7 +25,7 @@ object NostrThreadDataSource : NostrDataSource("SingleThreadFeed") {
         )
     }
 
-    val loadEventsChannel = requestNewChannel() { eoseTime, relay ->
+    val loadEventsChannel = requestNewChannel() { _, _ ->
         // Many relays operate with limits in the amount of filters.
         // As information comes, the filters will be rotated to get more data.
         invalidateFilters()

app/src/main/java/com/vitorpamplona/amethyst/service/model/Event.kt

@@ -222,6 +222,7 @@ open class Event(
             ContactListEvent.kind -> ContactListEvent(id, pubKey, createdAt, tags, content, sig)
             DeletionEvent.kind -> DeletionEvent(id, pubKey, createdAt, tags, content, sig)
 
+            FileHeaderEvent.kind -> FileHeaderEvent(id, pubKey, createdAt, tags, content, sig)
             LnZapEvent.kind -> LnZapEvent(id, pubKey, createdAt, tags, content, sig)
             LnZapPaymentRequestEvent.kind -> LnZapPaymentRequestEvent(id, pubKey, createdAt, tags, content, sig)
             LnZapRequestEvent.kind -> LnZapRequestEvent(id, pubKey, createdAt, tags, content, sig)

app/src/main/java/com/vitorpamplona/amethyst/service/model/FileHeaderEvent.kt

@@ -0,0 +1,71 @@
+package com.vitorpamplona.amethyst.service.model
+
+import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.toHexKey
+import nostr.postr.Utils
+import java.util.Date
+
+class FileHeaderEvent(
+    id: HexKey,
+    pubKey: HexKey,
+    createdAt: Long,
+    tags: List<List<String>>,
+    content: String,
+    sig: HexKey
+) : Event(id, pubKey, createdAt, kind, tags, content, sig) {
+
+    fun url() = tags.firstOrNull { it.size > 1 && it[0] == URL }?.get(1)
+    fun encryptionKey() = tags.firstOrNull { it.size > 2 && it[0] == ENCRYPTION_KEY }?.let { AESGCM(it[1], it[2]) }
+    fun mimeType() = tags.firstOrNull { it.size > 1 && it[0] == MIME_TYPE }?.get(1)
+    fun hash() = tags.firstOrNull { it.size > 1 && it[0] == HASH }?.get(1)
+    fun size() = tags.firstOrNull { it.size > 1 && it[0] == FILE_SIZE }?.get(1)
+    fun magnetURI() = tags.firstOrNull { it.size > 1 && it[0] == MAGNET_URI }?.get(1)
+    fun torrentInfoHash() = tags.firstOrNull { it.size > 1 && it[0] == TORRENT_INFOHASH }?.get(1)
+    fun blurhash() = tags.firstOrNull { it.size > 1 && it[0] == BLUR_HASH }?.get(1)
+
+    companion object {
+        const val kind = 1063
+
+        private const val URL = "url"
+        private const val ENCRYPTION_KEY = "aes-256-gcm"
+        private const val MIME_TYPE = "m"
+        private const val FILE_SIZE = "size"
+        private const val HASH = "x"
+        private const val MAGNET_URI = "magnet"
+        private const val TORRENT_INFOHASH = "i"
+        private const val BLUR_HASH = "blurhash"
+
+        fun create(
+            url: String,
+            mimeType: String? = null,
+            description: String? = null,
+            hash: String? = null,
+            size: String? = null,
+            blurhash: String? = null,
+            magnetURI: String? = null,
+            torrentInfoHash: String? = null,
+            encryptionKey: AESGCM? = null,
+            privateKey: ByteArray,
+            createdAt: Long = Date().time / 1000
+        ): FileHeaderEvent {
+            var tags = listOfNotNull(
+                listOf(URL, url),
+                mimeType?.let { listOf(MIME_TYPE, mimeType) },
+                hash?.let { listOf(HASH, it) },
+                size?.let { listOf(FILE_SIZE, it) },
+                blurhash?.let { listOf(BLUR_HASH, it) },
+                magnetURI?.let { listOf(MAGNET_URI, it) },
+                torrentInfoHash?.let { listOf(TORRENT_INFOHASH, it) },
+                encryptionKey?.let { listOf(ENCRYPTION_KEY, it.key, it.nonce) }
+            )
+
+            val content = description ?: ""
+            val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
+            val id = generateId(pubKey, createdAt, kind, tags, content)
+            val sig = Utils.sign(id, privateKey)
+            return FileHeaderEvent(id.toHexKey(), pubKey, createdAt, tags, content, sig.toHexKey())
+        }
+    }
+}
+
+data class AESGCM(val key: String, val nonce: String)

app/src/main/java/com/vitorpamplona/amethyst/service/model/LnZapEvent.kt

@@ -4,7 +4,6 @@ import android.util.Log
 import com.vitorpamplona.amethyst.model.HexKey
 import com.vitorpamplona.amethyst.service.lnurl.LnInvoiceUtil
 import com.vitorpamplona.amethyst.service.relays.Client
-import java.math.BigDecimal
 
 class LnZapEvent(
     id: HexKey,
@@ -14,25 +13,37 @@ class LnZapEvent(
     content: String,
     sig: HexKey
 ) : LnZapEventInterface, Event(id, pubKey, createdAt, kind, tags, content, sig) {
+    // This event is also kept in LocalCache (same object)
+    @Transient val zapRequest: LnZapRequestEvent?
 
-    override fun zappedPost() = tags
+    private fun containedPost(): LnZapRequestEvent? = try {
-        .filter { it.firstOrNull() == "e" }
+        description()?.ifBlank { null }?.let {
-        .mapNotNull { it.getOrNull(1) }
+            fromJson(it, Client.lenient)
-
+        } as? LnZapRequestEvent
-    override fun zappedPollOption(): Int? = containedPost()?.tags
+    } catch (e: Exception) {
-        ?.filter { it.firstOrNull() == POLL_OPTION }
+        Log.e("LnZapEvent", "Failed to Parse Contained Post ${description()}", e)
-        ?.getOrNull(0)?.getOrNull(1)?.toInt()
+        null
-
-    override fun zappedAuthor() = tags
-        .filter { it.firstOrNull() == "p" }
-        .mapNotNull { it.getOrNull(1) }
-
-    override fun zappedRequestAuthor(): String? = containedPost()?.pubKey()
-
-    override fun amount(): BigDecimal? {
-        return amount
     }
 
+    init {
+        zapRequest = containedPost()
+    }
+
+    override fun zappedPost() = tags.filter { it.size > 1 && it[0] == "e" }.map { it[1] }
+
+    override fun zappedAuthor() = tags.filter { it.size > 1 && it[0] == "p" }.map { it[1] }
+
+    override fun zappedPollOption(): Int? = try {
+        zapRequest?.tags?.firstOrNull { it.size > 1 && it[0] == POLL_OPTION }?.get(1)?.toInt()
+    } catch (e: Exception) {
+        Log.e("LnZapEvent", "ZappedPollOption failed to parse", e)
+        null
+    }
+
+    override fun zappedRequestAuthor(): String? = zapRequest?.pubKey()
+
+    override fun amount() = amount
+
     // Keeps this as a field because it's a heavier function used everywhere.
     val amount by lazy {
         try {
@@ -42,29 +53,14 @@ class LnZapEvent(
             null
         }
     }
+
     override fun message(): String {
-        return message
+        return content
-    }
-    val message = content
-
-    override fun containedPost(): Event? = try {
-        description()?.ifBlank { null }?.let {
-            fromJson(it, Client.lenient)
-        }
-    } catch (e: Exception) {
-        Log.e("LnZapEvent", "Failed to Parse Contained Post ${description()}", e)
-        null
     }
 
-    private fun lnInvoice(): String? = tags
+    private fun lnInvoice() = tags.firstOrNull { it.size > 1 && it[0] == "bolt11" }?.get(1)
-        .filter { it.firstOrNull() == "bolt11" }
-        .mapNotNull { it.getOrNull(1) }
-        .firstOrNull()
 
-    private fun description(): String? = tags
+    private fun description() = tags.firstOrNull { it.size > 1 && it[0] == "description" }?.get(1)
-        .filter { it.firstOrNull() == "description" }
-        .mapNotNull { it.getOrNull(1) }
-        .firstOrNull()
 
     companion object {
         const val kind = 9735

app/src/main/java/com/vitorpamplona/amethyst/service/model/LnZapEventInterface.kt

@@ -16,7 +16,5 @@ interface LnZapEventInterface : EventInterface {
 
     fun amount(): BigDecimal?
 
-    fun containedPost(): Event?
-
     fun message(): String
 }

app/src/main/java/com/vitorpamplona/amethyst/service/model/LnZapRequestEvent.kt

@@ -13,8 +13,10 @@ class LnZapRequestEvent(
     content: String,
     sig: HexKey
 ) : Event(id, pubKey, createdAt, kind, tags, content, sig) {
-    fun zappedPost() = tags.filter { it.firstOrNull() == "e" }.mapNotNull { it.getOrNull(1) }
+
-    fun zappedAuthor() = tags.filter { it.firstOrNull() == "p" }.mapNotNull { it.getOrNull(1) }
+    fun zappedPost() = tags.filter { it.size > 1 && it[0] == "e" }.map { it[1] }
+
+    fun zappedAuthor() = tags.filter { it.size > 1 && it[0] == "p" }.map { it[1] }
 
     companion object {
         const val kind = 9734

app/src/main/java/com/vitorpamplona/amethyst/service/model/PollNoteEvent.kt

@@ -20,24 +20,17 @@ class PollNoteEvent(
     content: String,
     sig: HexKey
 ) : BaseTextNoteEvent(id, pubKey, createdAt, kind, tags, content, sig) {
-    fun pollOptions(): Map<Int, String> {
+    fun pollOptions() =
-        val map = mutableMapOf<Int, String>()
+        tags.filter { it.size > 2 && it[0] == POLL_OPTION }
-        tags.filter { it.first() == POLL_OPTION }
+            .associate { it[1].toInt() to it[2] }
-            .forEach { map[it[1].toInt()] = it[2] }
-        return map
-    }
 
     fun getTagInt(property: String): Int? {
-        val tagList = tags.filter {
+        val number = tags.firstOrNull() { it.size > 1 && it[0] == property }?.get(1)
-            it.firstOrNull() == property
-        }
-        val tag = tagList.getOrNull(0)
-        val s = tag?.getOrNull(1)
 
-        return if (s.isNullOrBlank() || s == "null") {
+        return if (number.isNullOrBlank() || number == "null") {
             null
         } else {
-            s.toInt()
+            number.toInt()
         }
     }
 

app/src/main/java/com/vitorpamplona/amethyst/service/model/PrivateDmEvent.kt

@@ -21,7 +21,7 @@ class PrivateDmEvent(
      * nip-04 EncryptedDmEvent but may omit the recipient, too. This value can be queried and used
      * for initial messages.
      */
-    fun recipientPubKey() = tags.firstOrNull { it.firstOrNull() == "p" }?.run { Hex.decode(this[1]).toHexKey() } // makes sure its a valid one
+    fun recipientPubKey() = tags.firstOrNull { it.size > 1 && it[0] == "p" }?.run { Hex.decode(this[1]).toHexKey() } // makes sure its a valid one
 
     /**
      * To be fully compatible with nip-04, we read e-tags that are in violation to nip-18.
@@ -29,7 +29,7 @@ class PrivateDmEvent(
      * Nip-18 messages should refer to other events by inline references in the content like
      * `[](e/c06f795e1234a9a1aecc731d768d4f3ca73e80031734767067c82d67ce82e506).
      */
-    fun replyTo() = tags.firstOrNull { it.firstOrNull() == "e" }?.getOrNull(1)
+    fun replyTo() = tags.firstOrNull { it.size > 1 && it[0] == "e" }?.get(1)
 
     fun plainContent(privKey: ByteArray, pubKey: ByteArray): String? {
         return try {

app/src/main/java/com/vitorpamplona/amethyst/service/model/ReactionEvent.kt

@@ -14,8 +14,8 @@ class ReactionEvent(
     sig: HexKey
 ) : Event(id, pubKey, createdAt, kind, tags, content, sig) {
 
-    fun originalPost() = tags.filter { it.firstOrNull() == "e" }.mapNotNull { it.getOrNull(1) }
+    fun originalPost() = tags.filter { it.size > 1 && it[0] == "e" }.map { it[1] }
-    fun originalAuthor() = tags.filter { it.firstOrNull() == "p" }.mapNotNull { it.getOrNull(1) }
+    fun originalAuthor() = tags.filter { it.size > 1 && it[0] == "p" }.map { it[1] }
 
     companion object {
         const val kind = 7

app/src/main/java/com/vitorpamplona/amethyst/service/model/ReportEvent.kt

@@ -30,7 +30,7 @@ class ReportEvent(
     }
 
     fun reportedPost() = tags
-        .filter { it.firstOrNull() == "e" && it.getOrNull(1) != null }
+        .filter { it.size > 1 && it[0] == "e" }
         .map {
             ReportedKey(
                 it[1],
@@ -39,7 +39,7 @@ class ReportEvent(
         }
 
     fun reportedAuthor() = tags
-        .filter { it.firstOrNull() == "p" && it.getOrNull(1) != null }
+        .filter { it.size > 1 && it[0] == "p" }
         .map {
             ReportedKey(
                 it[1],

app/src/main/java/com/vitorpamplona/amethyst/ui/MainActivity.kt

@@ -19,6 +19,7 @@ import coil.decode.ImageDecoderDecoder
 import coil.decode.SvgDecoder
 import com.vitorpamplona.amethyst.LocalPreferences
 import com.vitorpamplona.amethyst.ServiceManager
+import com.vitorpamplona.amethyst.VideoCache
 import com.vitorpamplona.amethyst.service.nip19.Nip19
 import com.vitorpamplona.amethyst.service.relays.Client
 import com.vitorpamplona.amethyst.ui.navigation.Route
@@ -54,6 +55,9 @@ class MainActivity : FragmentActivity() {
             null
         }
 
+        // Initializes video cache.
+        VideoCache.init(this.applicationContext)
+
         Coil.setImageLoader {
             ImageLoader.Builder(this).components {
                 if (SDK_INT >= 28) {

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/ImageUploader.kt

@@ -15,7 +15,7 @@ object ImageUploader {
     fun uploadImage(
         uri: Uri,
         contentResolver: ContentResolver,
-        onSuccess: (String) -> Unit,
+        onSuccess: (String, String?) -> Unit,
         onError: (Throwable) -> Unit
     ) {
         val contentType = contentResolver.getType(uri)
@@ -64,7 +64,7 @@ object ImageUploader {
                             "There must be an uploaded image URL in the response"
                         }
 
-                        onSuccess(url)
+                        onSuccess(url, contentType)
                     }
                 } catch (e: Exception) {
                     e.printStackTrace()

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewMessageTagger.kt

@@ -9,21 +9,21 @@ import com.vitorpamplona.amethyst.service.nip19.Nip19
 
 class NewMessageTagger(var channel: Channel?, var mentions: List<User>?, var replyTos: List<Note>?, var message: String) {
 
-    open fun addUserToMentions(user: User) {
+    fun addUserToMentions(user: User) {
         mentions = if (mentions?.contains(user) == true) mentions else mentions?.plus(user) ?: listOf(user)
     }
 
-    open fun addNoteToReplyTos(note: Note) {
+    fun addNoteToReplyTos(note: Note) {
         note.author?.let { addUserToMentions(it) }
         replyTos = if (replyTos?.contains(note) == true) replyTos else replyTos?.plus(note) ?: listOf(note)
     }
 
-    open fun tagIndex(user: User): Int {
+    fun tagIndex(user: User): Int {
         // Postr Events assembles replies before mentions in the tag order
         return (if (channel != null) 1 else 0) + (replyTos?.size ?: 0) + (mentions?.indexOf(user) ?: 0)
     }
 
-    open fun tagIndex(note: Note): Int {
+    fun tagIndex(note: Note): Int {
         // Postr Events assembles replies before mentions in the tag order
         return (if (channel != null) 1 else 0) + (replyTos?.indexOf(note) ?: 0)
     }

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewPollOption.kt

@@ -7,7 +7,6 @@ import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Delete
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.input.KeyboardCapitalization
 import androidx.compose.ui.tooling.preview.Preview
@@ -15,15 +14,6 @@ import com.vitorpamplona.amethyst.R
 
 @Composable
 fun NewPollOption(pollViewModel: NewPostViewModel, optionIndex: Int) {
-    val colorInValid = TextFieldDefaults.outlinedTextFieldColors(
-        focusedBorderColor = MaterialTheme.colors.error,
-        unfocusedBorderColor = Color.Red
-    )
-    val colorValid = TextFieldDefaults.outlinedTextFieldColors(
-        focusedBorderColor = MaterialTheme.colors.primary,
-        unfocusedBorderColor = MaterialTheme.colors.onSurface.copy(alpha = 0.32f)
-    )
-
     Row {
         val deleteIcon: @Composable (() -> Unit) = {
             IconButton(

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewPollView.kt

@@ -116,7 +116,7 @@ fun NewPollView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = n
                             Text(stringResource(R.string.poll_heading_required))
                             // NewPollRecipientsField(pollViewModel, account)
                             NewPollPrimaryDescription(pollViewModel)
-                            pollViewModel.pollOptions.values.forEachIndexed { index, element ->
+                            pollViewModel.pollOptions.values.forEachIndexed { index, _ ->
                                 NewPollOption(pollViewModel, index)
                             }
                             Button(
@@ -150,7 +150,7 @@ fun NewPollView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = n
                             itemsIndexed(
                                 userSuggestions,
                                 key = { _, item -> item.pubkeyHex }
-                            ) { index, item ->
+                            ) { _, item ->
                                 UserLine(item, account) {
                                     pollViewModel.autocompleteWithUser(item)
                                 }

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewPostView.kt

@@ -167,7 +167,7 @@ fun NewPostView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = n
                             )
 
                             if (postViewModel.wantsPoll) {
-                                postViewModel.pollOptions.values.forEachIndexed { index, element ->
+                                postViewModel.pollOptions.values.forEachIndexed { index, _ ->
                                     NewPollOption(postViewModel, index)
                                 }
 
@@ -189,7 +189,7 @@ fun NewPostView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = n
                             val user = postViewModel.account?.userProfile()
                             val lud16 = user?.info?.lnAddress()
 
-                            if (lud16 != null && user != null && postViewModel.wantsInvoice) {
+                            if (lud16 != null && postViewModel.wantsInvoice) {
                                 Row(verticalAlignment = Alignment.CenterVertically, modifier = Modifier.padding(vertical = 5.dp)) {
                                     InvoiceRequest(
                                         lud16,

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewPostViewModel.kt

@@ -13,6 +13,7 @@ import androidx.compose.ui.text.input.TextFieldValue
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import com.vitorpamplona.amethyst.model.*
+import com.vitorpamplona.amethyst.service.FileHeader
 import com.vitorpamplona.amethyst.service.model.PrivateDmEvent
 import com.vitorpamplona.amethyst.service.model.TextNoteEvent
 import com.vitorpamplona.amethyst.ui.components.isValidURL
@@ -72,7 +73,7 @@ open class NewPostViewModel : ViewModel() {
                     this.mentions = currentMentions.plus(replyUser)
                 }
             }
-        } ?: {
+        } ?: run {
             replyTos = null
             mentions = null
         }
@@ -110,13 +111,39 @@ open class NewPostViewModel : ViewModel() {
         ImageUploader.uploadImage(
             uri = it,
             contentResolver = context.contentResolver,
-            onSuccess = { imageUrl ->
+            onSuccess = { imageUrl, mimeType ->
-                isUploadingImage = false
-                message = TextFieldValue(message.text + "\n\n" + imageUrl)
-
                 viewModelScope.launch(Dispatchers.IO) {
-                    delay(2000)
+                    // Images don't seem to be ready immediately after upload
-                    urlPreview = findUrlInMessage()
+
+                    if (mimeType?.startsWith("image/") == true) {
+                        delay(2000)
+                    } else {
+                        delay(5000)
+                    }
+
+                    FileHeader.prepare(
+                        imageUrl,
+                        mimeType,
+                        onReady = {
+                            val note = account?.sendHeader(it)
+
+                            isUploadingImage = false
+
+                            if (note == null) {
+                                message = TextFieldValue(message.text + "\n\n" + imageUrl)
+                            } else {
+                                message = TextFieldValue(message.text + "\n\nnostr:" + note.idNote())
+                            }
+
+                            urlPreview = findUrlInMessage()
+                        },
+                        onError = {
+                            isUploadingImage = false
+                            viewModelScope.launch {
+                                imageUploadingError.emit("Failed to upload the image / video")
+                            }
+                        }
+                    )
                 }
             },
             onError = {

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewUserMetadataViewModel.kt

@@ -171,7 +171,7 @@ class NewUserMetadataViewModel : ViewModel() {
         ImageUploader.uploadImage(
             uri = it,
             contentResolver = context.contentResolver,
-            onSuccess = { imageUrl ->
+            onSuccess = { imageUrl, mimeType ->
                 onUploading(false)
                 onUploaded(imageUrl)
             },

app/src/main/java/com/vitorpamplona/amethyst/ui/components/BundledUpdate.kt

@@ -9,6 +9,7 @@ import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import java.util.concurrent.atomic.AtomicBoolean
+import java.util.concurrent.atomic.AtomicReference
 
 /**
  * This class is designed to have a waiting time between two calls of invalidate
@@ -44,3 +45,37 @@ class BundledUpdate(
         }
     }
 }
+
+/**
+ * This class is designed to have a waiting time between two calls of invalidate
+ */
+class BundledInsert<T>(
+    val delay: Long,
+    val dispatcher: CoroutineDispatcher = Dispatchers.Default
+) {
+    private var onlyOneInBlock = AtomicBoolean()
+    private var atomicSet = AtomicReference<Set<T>>(setOf<T>())
+
+    fun invalidateList(newObject: T, onUpdate: (Set<T>) -> Unit) {
+        atomicSet.updateAndGet() {
+            it + newObject
+        }
+
+        if (onlyOneInBlock.getAndSet(true)) {
+            return
+        }
+
+        val scope = CoroutineScope(Job() + dispatcher)
+        scope.launch {
+            try {
+                onUpdate(atomicSet.getAndSet(emptySet()))
+                delay(delay)
+                onUpdate(atomicSet.getAndSet(emptySet()))
+            } finally {
+                withContext(NonCancellable) {
+                    onlyOneInBlock.set(false)
+                }
+            }
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/components/RichTextViewer.kt

@@ -14,6 +14,7 @@ import androidx.compose.material.LocalTextStyle
 import androidx.compose.material.MaterialTheme
 import androidx.compose.material.Text
 import androidx.compose.runtime.*
+import androidx.compose.runtime.livedata.observeAsState
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.Color
@@ -32,6 +33,8 @@ import com.halilibo.richtext.markdown.MarkdownParseOptions
 import com.halilibo.richtext.ui.RichTextStyle
 import com.halilibo.richtext.ui.material.MaterialRichText
 import com.halilibo.richtext.ui.resolveDefaults
+import com.linkedin.urls.detection.UrlDetector
+import com.linkedin.urls.detection.UrlDetectorOptions
 import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.model.User
@@ -123,48 +126,43 @@ fun RichTextViewer(
                 )
             )
 
+            val markdownWithSpecialContent = returnMarkdownWithSpecialContent(content)
+
             MaterialRichText(
                 style = myMarkDownStyle
             ) {
                 Markdown(
-                    content = content,
+                    content = markdownWithSpecialContent,
                     markdownParseOptions = MarkdownParseOptions.Default
                 )
             }
         } else {
-            val imagesForPager = mutableListOf<String>()
+            val urls = UrlDetector(content, UrlDetectorOptions.Default).detect()
-
+            val urlSet = urls.mapTo(LinkedHashSet(urls.size)) { it.originalUrl }
-            content.split('\n').forEach { paragraph ->
+            val imagesForPager = urlSet.mapNotNull { fullUrl ->
-                paragraph.split(' ').forEach { word: String ->
+                val removedParamsFromUrl = fullUrl.split("?")[0].lowercase()
-                    // sequence of images will render in a slideview
+                if (imageExtensions.any { removedParamsFromUrl.endsWith(it) }) {
-                    if (isValidURL(word)) {
+                    ZoomableImage(fullUrl)
-                        val removedParamsFromUrl = word.split("?")[0].lowercase()
+                } else if (videoExtensions.any { removedParamsFromUrl.endsWith(it) }) {
-                        if (imageExtensions.any { removedParamsFromUrl.endsWith(it) }) {
+                    ZoomableVideo(fullUrl)
-                            imagesForPager.add(word)
+                } else {
-                        }
+                    null
-                        if (videoExtensions.any { removedParamsFromUrl.endsWith(it) }) {
-                            imagesForPager.add(word)
-                        }
-                    }
                 }
-            }
+            }.associateBy { it.url }
+            val imageList = imagesForPager.values.toList()
 
             // FlowRow doesn't work well with paragraphs. So we need to split them
             content.split('\n').forEach { paragraph ->
                 FlowRow() {
-                    val s = if (isArabic(paragraph)) paragraph.split(' ').reversed() else paragraph.split(' ')
+                    val s = if (isArabic(paragraph)) paragraph.trim().split(' ').reversed() else paragraph.trim().split(' ')
                     s.forEach { word: String ->
                         if (canPreview) {
                             // Explicit URL
-                            if (isValidURL(word)) {
+                            val img = imagesForPager[word]
-                                val removedParamsFromUrl = word.split("?")[0].lowercase()
+                            if (img != null) {
-                                if (imageExtensions.any { removedParamsFromUrl.endsWith(it) }) {
+                                ZoomableContentView(img, imageList)
-                                    ZoomableImageView(word, imagesForPager)
+                            } else if (urlSet.contains(word)) {
-                                } else if (videoExtensions.any { removedParamsFromUrl.endsWith(it) }) {
+                                UrlPreview(word, "$word ")
-                                    ZoomableImageView(word, imagesForPager)
-                                } else {
-                                    UrlPreview(word, "$word ")
-                                }
                             } else if (word.startsWith("lnbc", true)) {
                                 MayBeInvoicePreview(word)
                             } else if (word.startsWith("lnurl", true)) {
@@ -192,7 +190,7 @@ fun RichTextViewer(
                                         navController
                                     )
                                 } else if (hashTagsPattern.matcher(word).matches()) {
-                                    HashTag(word, accountViewModel, navController)
+                                    HashTag(word, navController)
                                 } else {
                                     Text(
                                         text = "$word ",
@@ -205,8 +203,15 @@ fun RichTextViewer(
                                 val url = matcher.group(1) // url
                                 val additionalChars = matcher.group(4) ?: "" // additional chars
 
-                                ClickableUrl(url, "https://$url")
+                                if (url != null) {
-                                Text("$additionalChars ")
+                                    ClickableUrl(url, "https://$url")
+                                    Text("$additionalChars ")
+                                } else {
+                                    Text(
+                                        text = "$word ",
+                                        style = LocalTextStyle.current.copy(textDirection = TextDirection.Content)
+                                    )
+                                }
                             } else {
                                 Text(
                                     text = "$word ",
@@ -214,7 +219,7 @@ fun RichTextViewer(
                                 )
                             }
                         } else {
-                            if (isValidURL(word)) {
+                            if (urlSet.contains(word)) {
                                 ClickableUrl("$word ", word)
                             } else if (word.startsWith("lnurl", true)) {
                                 val lnWithdrawal = LnWithdrawalUtil.findWithdrawal(word)
@@ -249,7 +254,7 @@ fun RichTextViewer(
                                         navController
                                     )
                                 } else if (hashTagsPattern.matcher(word).matches()) {
-                                    HashTag(word, accountViewModel, navController)
+                                    HashTag(word, navController)
                                 } else {
                                     Text(
                                         text = "$word ",
@@ -262,8 +267,15 @@ fun RichTextViewer(
                                 val url = matcher.group(1) // url
                                 val additionalChars = matcher.group(4) ?: "" // additional chars
 
-                                ClickableUrl(url, "https://$url")
+                                if (url != null) {
-                                Text("$additionalChars ")
+                                    ClickableUrl(url, "https://$url")
+                                    Text("$additionalChars ")
+                                } else {
+                                    Text(
+                                        text = "$word ",
+                                        style = LocalTextStyle.current.copy(textDirection = TextDirection.Content)
+                                    )
+                                }
                             } else {
                                 Text(
                                     text = "$word ",
@@ -278,6 +290,53 @@ fun RichTextViewer(
     }
 }
 
+@Composable
+private fun getDisplayNameFromUserNip19(parsedNip19: Nip19.Return): String? {
+    if (parsedNip19.type == Nip19.Type.USER) {
+        val userHex = parsedNip19.hex
+        val userBase = LocalCache.getOrCreateUser(userHex)
+
+        val userState by userBase.live().metadata.observeAsState()
+        val displayName = userState?.user?.bestDisplayName()
+        if (displayName !== null) {
+            return displayName
+        }
+    }
+    return null
+}
+
+@Composable
+private fun returnMarkdownWithSpecialContent(content: String): String {
+    var returnContent = ""
+    content.split('\n').forEach { paragraph ->
+        paragraph.split(' ').forEach { word: String ->
+            if (isValidURL(word)) {
+                returnContent += "[$word]($word) "
+            } else if (Patterns.EMAIL_ADDRESS.matcher(word).matches()) {
+                returnContent += "[$word](mailto:$word) "
+            } else if (Patterns.PHONE.matcher(word).matches() && word.length > 6) {
+                returnContent += "[$word](tel:$word) "
+            } else if (isBechLink(word)) {
+                val parsedNip19 = Nip19.uriToRoute(word)
+                returnContent += if (parsedNip19 !== null) {
+                    val displayName = getDisplayNameFromUserNip19(parsedNip19)
+                    if (displayName != null) {
+                        "[@$displayName](nostr://$word) "
+                    } else {
+                        "$word "
+                    }
+                } else {
+                    "$word "
+                }
+            } else {
+                returnContent += "$word "
+            }
+        }
+        returnContent += "\n"
+    }
+    return returnContent
+}
+
 private fun isArabic(text: String): Boolean {
     return text.any { it in '\u0600'..'\u06FF' || it in '\u0750'..'\u077F' }
 }
@@ -326,9 +385,11 @@ fun BechLink(word: String, canPreview: Boolean, backgroundColor: Color, accountV
                 isQuotedNote = true,
                 navController = navController
             )
-            Text(
+            if (!it.second.isNullOrEmpty()) {
-                "${it.second} "
+                Text(
-            )
+                    "${it.second} "
+                )
+            }
         } ?: nip19Route?.let {
             ClickableRoute(it, navController)
         } ?: Text(text = "$word ")
@@ -340,7 +401,7 @@ fun BechLink(word: String, canPreview: Boolean, backgroundColor: Color, accountV
 }
 
 @Composable
-fun HashTag(word: String, accountViewModel: AccountViewModel, navController: NavController) {
+fun HashTag(word: String, navController: NavController) {
     var tagSuffixPair by remember { mutableStateOf<Pair<String, String?>?>(null) }
 
     LaunchedEffect(key1 = word) {

app/src/main/java/com/vitorpamplona/amethyst/ui/components/Robohash.kt

@@ -11,6 +11,7 @@ import coil.fetch.Fetcher
 import coil.fetch.SourceResult
 import coil.request.ImageRequest
 import coil.request.Options
+import coil.size.Size
 import okio.Buffer
 import java.security.MessageDigest
 
@@ -61,6 +62,7 @@ private fun svgString(msg: String): String {
 
 class HashImageFetcher(
     private val context: Context,
+    private val size: Size,
     private val data: Uri
 ) : Fetcher {
 
@@ -79,16 +81,17 @@ class HashImageFetcher(
 
     object Factory : Fetcher.Factory<Uri> {
         override fun create(data: Uri, options: Options, imageLoader: ImageLoader): Fetcher {
-            return HashImageFetcher(options.context, data)
+            return HashImageFetcher(options.context, options.size, data)
         }
     }
 }
 object Robohash {
-    fun imageRequest(context: Context, message: String): ImageRequest {
+    fun imageRequest(context: Context, message: String, robotSize: Size): ImageRequest {
         return ImageRequest
             .Builder(context)
             .data("robohash:$message")
             .fetcherFactory(HashImageFetcher.Factory)
+            .size(robotSize)
             .crossfade(100)
             .build()
     }

app/src/main/java/com/vitorpamplona/amethyst/ui/components/RobohashAsyncImage.kt

@@ -9,13 +9,17 @@ import androidx.compose.ui.graphics.FilterQuality
 import androidx.compose.ui.graphics.drawscope.DrawScope
 import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalDensity
+import androidx.compose.ui.unit.Dp
 import coil.compose.AsyncImage
 import coil.compose.AsyncImagePainter
 import coil.compose.rememberAsyncImagePainter
+import coil.size.Size
 
 @Composable
 fun RobohashAsyncImage(
     robot: String,
+    robotSize: Dp,
     modifier: Modifier = Modifier,
     contentDescription: String? = null,
     transform: (AsyncImagePainter.State) -> AsyncImagePainter.State = AsyncImagePainter.DefaultTransform,
@@ -26,24 +30,33 @@ fun RobohashAsyncImage(
     colorFilter: ColorFilter? = null,
     filterQuality: FilterQuality = DrawScope.DefaultFilterQuality
 ) {
-    AsyncImage(
+    with(LocalDensity.current) {
-        model = Robohash.imageRequest(LocalContext.current, robot),
+        AsyncImage(
-        contentDescription = contentDescription,
+            model = Robohash.imageRequest(
-        modifier = modifier,
+                LocalContext.current,
-        transform = transform,
+                robot,
-        onState = onState,
+                Size(robotSize.roundToPx(), robotSize.roundToPx())
-        alignment = alignment,
+            ),
-        contentScale = contentScale,
+            contentDescription = contentDescription,
-        alpha = alpha,
+            modifier = modifier,
-        colorFilter = colorFilter,
+            transform = transform,
-        filterQuality = filterQuality
+            onState = onState,
-    )
+            alignment = alignment,
+            contentScale = contentScale,
+            alpha = alpha,
+            colorFilter = colorFilter,
+            filterQuality = filterQuality
+        )
+    }
 }
 
+var imageErrors = setOf<String>()
+
 @Composable
 fun RobohashFallbackAsyncImage(
     robot: String,
-    model: String?,
+    robotSize: Dp,
+    model: String,
     contentDescription: String?,
     modifier: Modifier = Modifier,
     alignment: Alignment = Alignment.Center,
@@ -52,22 +65,47 @@ fun RobohashFallbackAsyncImage(
     colorFilter: ColorFilter? = null,
     filterQuality: FilterQuality = DrawScope.DefaultFilterQuality
 ) {
-    val context = LocalContext.current
+    if (imageErrors.contains(model)) {
-    val painter = rememberAsyncImagePainter(model = Robohash.imageRequest(context, robot))
+        RobohashAsyncImage(
+            robot = robot,
+            robotSize = robotSize,
+            contentDescription = contentDescription,
+            modifier = modifier,
+            alignment = alignment,
+            contentScale = contentScale,
+            alpha = alpha,
+            colorFilter = colorFilter,
+            filterQuality = filterQuality
+        )
+    } else {
+        val context = LocalContext.current
+        val painter = with(LocalDensity.current) {
+            rememberAsyncImagePainter(
+                model = Robohash.imageRequest(
+                    context,
+                    robot,
+                    Size(robotSize.roundToPx(), robotSize.roundToPx())
+                )
+            )
+        }
 
-    AsyncImage(
+        AsyncImage(
-        model = model,
+            model = model,
-        contentDescription = contentDescription,
+            contentDescription = contentDescription,
-        modifier = modifier,
+            modifier = modifier,
-        placeholder = painter,
+            placeholder = painter,
-        fallback = painter,
+            fallback = painter,
-        error = painter,
+            error = painter,
-        alignment = alignment,
+            alignment = alignment,
-        contentScale = contentScale,
+            contentScale = contentScale,
-        alpha = alpha,
+            alpha = alpha,
-        colorFilter = colorFilter,
+            colorFilter = colorFilter,
-        filterQuality = filterQuality
+            filterQuality = filterQuality,
-    )
+            onError = {
+                imageErrors = imageErrors + model
+            }
+        )
+    }
 }
 
 @Composable
@@ -82,9 +120,11 @@ fun RobohashAsyncImageProxy(
     colorFilter: ColorFilter? = null,
     filterQuality: FilterQuality = DrawScope.DefaultFilterQuality
 ) {
-    if (model.url == null) {
+    val proxy = model.proxyUrl()
+    if (proxy == null) {
         RobohashAsyncImage(
             robot = robot,
+            robotSize = model.size,
             contentDescription = contentDescription,
             modifier = modifier,
             alignment = alignment,
@@ -96,7 +136,8 @@ fun RobohashAsyncImageProxy(
     } else {
         RobohashFallbackAsyncImage(
             robot = robot,
-            model = model.proxyUrl(),
+            robotSize = model.size,
+            model = proxy,
             contentDescription = contentDescription,
             modifier = modifier,
             alignment = alignment,

app/src/main/java/com/vitorpamplona/amethyst/ui/components/SlidingCarousel.kt

@@ -1,5 +1,6 @@
 package com.vitorpamplona.amethyst.ui.components
 
+import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.background
 import androidx.compose.foundation.interaction.collectIsDraggedAsState
 import androidx.compose.foundation.layout.Box
@@ -10,6 +11,8 @@ import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.layout.wrapContentHeight
 import androidx.compose.foundation.layout.wrapContentWidth
 import androidx.compose.foundation.lazy.LazyRow
+import androidx.compose.foundation.pager.HorizontalPager
+import androidx.compose.foundation.pager.PagerState
 import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.material.MaterialTheme
 import androidx.compose.material.Surface
@@ -22,11 +25,8 @@ import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.unit.dp
-import com.google.accompanist.pager.ExperimentalPagerApi
-import com.google.accompanist.pager.HorizontalPager
-import com.google.accompanist.pager.PagerState
 
-@OptIn(ExperimentalPagerApi::class)
+@OptIn(ExperimentalFoundationApi::class)
 @Composable
 fun SlidingCarousel(
     modifier: Modifier = Modifier,
@@ -39,7 +39,7 @@ fun SlidingCarousel(
     Box(
         modifier = modifier.fillMaxWidth()
     ) {
-        HorizontalPager(count = itemsCount, state = pagerState) { page ->
+        HorizontalPager(pageCount = itemsCount, state = pagerState) { page ->
             itemContent(page)
         }
 

app/src/main/java/com/vitorpamplona/amethyst/ui/components/UrlPreviewCard.kt

@@ -41,24 +41,24 @@ fun UrlPreviewCard(
             )
     ) {
         Column {
-            val url = URL(previewInfo.url)
+            val validatedUrl = URL(previewInfo.url)
 
             // correctly treating relative images
             val imageUrl = if (previewInfo.image.startsWith("/")) {
-                URL(url, previewInfo.image).toString()
+                URL(validatedUrl, previewInfo.image).toString()
             } else {
                 previewInfo.image
             }
 
             AsyncImage(
                 model = imageUrl,
-                contentDescription = stringResource(R.string.preview_card_image_for, url),
+                contentDescription = stringResource(R.string.preview_card_image_for, validatedUrl),
                 contentScale = ContentScale.FillWidth,
                 modifier = Modifier.fillMaxWidth()
             )
 
             Text(
-                text = url.host,
+                text = validatedUrl.host,
                 style = MaterialTheme.typography.caption,
                 modifier = Modifier
                     .fillMaxWidth()

app/src/main/java/com/vitorpamplona/amethyst/ui/components/VideoView.kt

@@ -6,9 +6,13 @@ import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberUpdatedState
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalLifecycleOwner
 import androidx.compose.ui.viewinterop.AndroidView
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.LifecycleEventObserver
 import com.google.android.exoplayer2.C
 import com.google.android.exoplayer2.ExoPlayer
 import com.google.android.exoplayer2.MediaItem
@@ -21,44 +25,54 @@ import com.vitorpamplona.amethyst.VideoCache
 @Composable
 fun VideoView(videoUri: String, onDialog: ((Boolean) -> Unit)? = null) {
     val context = LocalContext.current
+    val lifecycleOwner = rememberUpdatedState(LocalLifecycleOwner.current)
 
-    val exoPlayer = remember {
+    val exoPlayer = remember(videoUri) {
         ExoPlayer.Builder(context).build().apply {
             repeatMode = Player.REPEAT_MODE_ALL
             videoScalingMode = C.VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING
             setMediaSource(
-                ProgressiveMediaSource.Factory(VideoCache.get(context.applicationContext)).createMediaSource(MediaItem.fromUri(videoUri))
+                ProgressiveMediaSource.Factory(VideoCache.get()).createMediaSource(MediaItem.fromUri(videoUri))
             )
             prepare()
         }
     }
 
-    val playerView = remember {
+    DisposableEffect(
-        StyledPlayerView(context).apply {
+        AndroidView(
-            player = exoPlayer
+            modifier = Modifier.fillMaxWidth(),
-            layoutParams = FrameLayout.LayoutParams(
+            factory = {
-                ViewGroup.LayoutParams.MATCH_PARENT,
+                StyledPlayerView(context).apply {
-                ViewGroup.LayoutParams.WRAP_CONTENT
+                    player = exoPlayer
-            )
+                    layoutParams = FrameLayout.LayoutParams(
-            resizeMode = AspectRatioFrameLayout.RESIZE_MODE_FIXED_WIDTH
+                        ViewGroup.LayoutParams.MATCH_PARENT,
-            onDialog?.let { innerOnDialog ->
+                        ViewGroup.LayoutParams.WRAP_CONTENT
-                setFullscreenButtonClickListener {
+                    )
-                    innerOnDialog(it)
+                    resizeMode = AspectRatioFrameLayout.RESIZE_MODE_FIXED_WIDTH
+                    onDialog?.let { innerOnDialog ->
+                        setFullscreenButtonClickListener {
+                            exoPlayer.pause()
+                            innerOnDialog(it)
+                        }
+                    }
                 }
             }
+        )
+    ) {
+        val observer = LifecycleEventObserver { _, event ->
+            when (event) {
+                Lifecycle.Event.ON_PAUSE -> {
+                    exoPlayer.pause()
+                }
+                else -> {}
+            }
         }
-    }
+        val lifecycle = lifecycleOwner.value.lifecycle
+        lifecycle.addObserver(observer)
 
-    DisposableEffect(exoPlayer) {
         onDispose {
             exoPlayer.release()
+            lifecycle.removeObserver(observer)
         }
     }
-
-    AndroidView(
-        modifier = Modifier.fillMaxWidth(),
-        factory = {
-            playerView
-        }
-    )
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/components/ZoomableContentView.kt

@@ -0,0 +1,408 @@
+package com.vitorpamplona.amethyst.ui.components
+
+import android.content.Context
+import android.util.Log
+import android.widget.Toast
+import androidx.compose.foundation.ExperimentalFoundationApi
+import androidx.compose.foundation.background
+import androidx.compose.foundation.border
+import androidx.compose.foundation.combinedClickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.pager.PagerState
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.InlineTextContent
+import androidx.compose.foundation.text.appendInlineContent
+import androidx.compose.material.Icon
+import androidx.compose.material.IconButton
+import androidx.compose.material.LocalTextStyle
+import androidx.compose.material.MaterialTheme
+import androidx.compose.material.Surface
+import androidx.compose.material.Text
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Report
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.compositeOver
+import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.platform.LocalClipboardManager
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.text.AnnotatedString
+import androidx.compose.ui.text.Placeholder
+import androidx.compose.ui.text.PlaceholderVerticalAlign
+import androidx.compose.ui.text.buildAnnotatedString
+import androidx.compose.ui.text.withStyle
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.compose.ui.window.Dialog
+import androidx.compose.ui.window.DialogProperties
+import coil.annotation.ExperimentalCoilApi
+import coil.compose.AsyncImage
+import coil.compose.AsyncImagePainter
+import coil.imageLoader
+import com.vitorpamplona.amethyst.R
+import com.vitorpamplona.amethyst.model.toHexKey
+import com.vitorpamplona.amethyst.service.BlurHashRequester
+import com.vitorpamplona.amethyst.ui.actions.CloseButton
+import com.vitorpamplona.amethyst.ui.actions.LoadingAnimation
+import com.vitorpamplona.amethyst.ui.actions.SaveToGallery
+import com.vitorpamplona.amethyst.ui.theme.Nip05
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import net.engawapg.lib.zoomable.rememberZoomState
+import net.engawapg.lib.zoomable.zoomable
+import java.security.MessageDigest
+
+abstract class ZoomableContent(
+    val url: String,
+    val description: String? = null,
+    val hash: String? = null
+)
+
+class ZoomableImage(
+    url: String,
+    description: String? = null,
+    hash: String? = null,
+    val bluehash: String? = null
+) : ZoomableContent(url, description, hash)
+
+class ZoomableVideo(
+    url: String,
+    description: String? = null,
+    hash: String? = null
+) : ZoomableContent(url, description, hash)
+
+fun figureOutMimeType(fullUrl: String): ZoomableContent {
+    val removedParamsFromUrl = fullUrl.split("?")[0].lowercase()
+    val isImage = imageExtensions.any { removedParamsFromUrl.endsWith(it) }
+    val isVideo = videoExtensions.any { removedParamsFromUrl.endsWith(it) }
+
+    return if (isImage) {
+        ZoomableImage(fullUrl)
+    } else if (isVideo) {
+        ZoomableVideo(fullUrl)
+    } else {
+        ZoomableImage(fullUrl)
+    }
+}
+
+@Composable
+@OptIn(ExperimentalFoundationApi::class)
+fun ZoomableContentView(content: ZoomableContent, images: List<ZoomableContent> = listOf(content)) {
+    val clipboardManager = LocalClipboardManager.current
+    val scope = rememberCoroutineScope()
+    val context = LocalContext.current
+
+    // store the dialog open or close state
+    var dialogOpen by remember {
+        mutableStateOf(false)
+    }
+
+    // store the dialog open or close state
+    var imageState by remember {
+        mutableStateOf<AsyncImagePainter.State?>(null)
+    }
+
+    var verifiedHash by remember {
+        mutableStateOf<Boolean?>(null)
+    }
+
+    LaunchedEffect(key1 = content.url, key2 = imageState) {
+        if (imageState is AsyncImagePainter.State.Success) {
+            scope.launch(Dispatchers.IO) {
+                verifiedHash = verifyHash(content, context)
+            }
+        }
+    }
+
+    val mainImageModifier = Modifier
+        .fillMaxWidth()
+        .clip(shape = RoundedCornerShape(15.dp))
+        .border(
+            1.dp,
+            MaterialTheme.colors.onSurface.copy(alpha = 0.12f),
+            RoundedCornerShape(15.dp)
+        )
+        .combinedClickable(
+            onClick = { dialogOpen = true },
+            onLongClick = { clipboardManager.setText(AnnotatedString(content.url)) }
+        )
+
+    if (content is ZoomableImage) {
+        Box() {
+            AsyncImage(
+                model = content.url,
+                contentDescription = content.description,
+                contentScale = ContentScale.FillWidth,
+                modifier = mainImageModifier,
+                onLoading = {
+                    imageState = it
+                },
+                onSuccess = {
+                    imageState = it
+                }
+            )
+
+            if (imageState !is AsyncImagePainter.State.Success) {
+                if (content.bluehash != null) {
+                    DisplayBlueHash(content, mainImageModifier)
+                } else {
+                    DisplayUrlWithLoadingSymbol(content)
+                }
+            } else {
+                HashVerificationSymbol(verifiedHash, Modifier.align(Alignment.TopEnd))
+            }
+        }
+    } else {
+        VideoView(content.url) { dialogOpen = true }
+    }
+
+    if (dialogOpen) {
+        ZoomableImageDialog(content, images, onDismiss = { dialogOpen = false })
+    }
+}
+
+@Composable
+private fun DisplayUrlWithLoadingSymbol(content: ZoomableContent) {
+    ClickableUrl(urlText = "$content ", url = content.url)
+
+    val myId = "inlineContent"
+    val emptytext = buildAnnotatedString {
+        withStyle(
+            LocalTextStyle.current.copy(color = MaterialTheme.colors.primary).toSpanStyle()
+        ) {
+            append("")
+            appendInlineContent(myId, "[icon]")
+        }
+    }
+    val inlineContent = mapOf(
+        Pair(
+            myId,
+            InlineTextContent(
+                Placeholder(
+                    width = 17.sp,
+                    height = 17.sp,
+                    placeholderVerticalAlign = PlaceholderVerticalAlign.Center
+                )
+            ) {
+                LoadingAnimation()
+            }
+        )
+    )
+
+    // Empty Text for Size of Icon
+    Text(
+        text = emptytext,
+        inlineContent = inlineContent
+    )
+}
+
+@Composable
+private fun DisplayBlueHash(
+    content: ZoomableImage,
+    modifier: Modifier
+) {
+    if (content.bluehash == null) return
+
+    val context = LocalContext.current
+    AsyncImage(
+        model = BlurHashRequester.imageRequest(
+            context,
+            content.bluehash
+        ),
+        contentDescription = content.description,
+        contentScale = ContentScale.FillWidth,
+        modifier = modifier
+    )
+}
+
+@OptIn(ExperimentalFoundationApi::class)
+@Composable
+fun ZoomableImageDialog(imageUrl: ZoomableContent, allImages: List<ZoomableContent> = listOf(imageUrl), onDismiss: () -> Unit) {
+    Dialog(
+        onDismissRequest = onDismiss,
+        properties = DialogProperties(usePlatformDefaultWidth = false)
+    ) {
+        Surface(modifier = Modifier.fillMaxSize(), color = MaterialTheme.colors.background) {
+            Column() {
+                val pagerState: PagerState = remember { PagerState() }
+
+                Row(
+                    modifier = Modifier
+                        .padding(10.dp)
+                        .fillMaxWidth(),
+                    horizontalArrangement = Arrangement.SpaceBetween,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    CloseButton(onCancel = onDismiss)
+
+                    SaveToGallery(url = allImages[pagerState.currentPage].url)
+                }
+
+                if (allImages.size > 1) {
+                    SlidingCarousel(
+                        pagerState = pagerState,
+                        itemsCount = allImages.size,
+                        itemContent = { index ->
+                            RenderImageOrVideo(allImages[index])
+                        }
+                    )
+                } else {
+                    RenderImageOrVideo(imageUrl)
+                }
+            }
+        }
+    }
+}
+
+@Composable
+private fun RenderImageOrVideo(content: ZoomableContent) {
+    val scope = rememberCoroutineScope()
+    val context = LocalContext.current
+
+    // store the dialog open or close state
+    var imageState by remember {
+        mutableStateOf<AsyncImagePainter.State?>(null)
+    }
+
+    var verifiedHash by remember {
+        mutableStateOf<Boolean?>(null)
+    }
+
+    LaunchedEffect(key1 = content.url, key2 = imageState) {
+        if (imageState is AsyncImagePainter.State.Success) {
+            scope.launch(Dispatchers.IO) {
+                verifiedHash = verifyHash(content, context)
+            }
+        }
+    }
+
+    if (content is ZoomableImage) {
+        Box() {
+            AsyncImage(
+                model = content.url,
+                contentDescription = content.description,
+                contentScale = ContentScale.FillWidth,
+                modifier = Modifier
+                    .fillMaxSize()
+                    .zoomable(rememberZoomState()),
+                onLoading = {
+                    imageState = it
+                },
+                onSuccess = {
+                    imageState = it
+                }
+            )
+            if (imageState !is AsyncImagePainter.State.Success) {
+                DisplayBlueHash(content = content, modifier = Modifier.fillMaxWidth())
+            } else {
+                HashVerificationSymbol(verifiedHash, Modifier.align(Alignment.TopEnd))
+            }
+        }
+    } else {
+        Row(verticalAlignment = Alignment.CenterVertically, modifier = Modifier.fillMaxSize(1f)) {
+            VideoView(content.url)
+        }
+    }
+}
+
+@OptIn(ExperimentalCoilApi::class)
+private suspend fun verifyHash(content: ZoomableContent, context: Context): Boolean? {
+    if (content.hash == null) return null
+
+    context.imageLoader.diskCache?.get(content.url)?.use { snapshot ->
+        val imageFile = snapshot.data.toFile()
+        val bytes = imageFile.readBytes()
+        val sha256 = MessageDigest.getInstance("SHA-256")
+
+        val hash = sha256.digest(bytes).toHexKey()
+
+        Log.d("Image Hash Verification", "$hash == ${content.hash}")
+
+        return hash == content.hash
+    }
+
+    return null
+}
+
+@Composable
+private fun HashVerificationSymbol(verifiedHash: Boolean?, modifier: Modifier) {
+    if (verifiedHash == null) return
+
+    val localContext = LocalContext.current
+    val scope = rememberCoroutineScope()
+
+    Box(
+        modifier
+            .width(40.dp)
+            .height(40.dp)
+            .padding(10.dp)
+    ) {
+        Box(
+            Modifier
+                .clip(CircleShape)
+                .fillMaxSize(0.6f)
+                .align(Alignment.Center)
+                .background(MaterialTheme.colors.background)
+        )
+
+        if (verifiedHash == true) {
+            IconButton(
+                onClick = {
+                    scope.launch {
+                        Toast.makeText(
+                            localContext,
+                            localContext.getString(R.string.hash_verification_passed),
+                            Toast.LENGTH_LONG
+                        ).show()
+                    }
+                }
+            ) {
+                Icon(
+                    painter = painterResource(R.drawable.ic_verified),
+                    "Hash Verified",
+                    tint = Nip05.copy(0.52f).compositeOver(MaterialTheme.colors.background),
+                    modifier = Modifier.size(30.dp)
+                )
+            }
+        } else if (verifiedHash == false) {
+            IconButton(
+                onClick = {
+                    scope.launch {
+                        Toast.makeText(
+                            localContext,
+                            localContext.getString(R.string.hash_verification_failed),
+                            Toast.LENGTH_LONG
+                        ).show()
+                    }
+                }
+            ) {
+                Icon(
+                    tint = Color.Red,
+                    imageVector = Icons.Default.Report,
+                    contentDescription = "Invalid Hash",
+                    modifier = Modifier.size(30.dp)
+                )
+            }
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/components/ZoomableImageView.kt

@@ -1,189 +0,0 @@
-package com.vitorpamplona.amethyst.ui.components
-
-import androidx.compose.foundation.ExperimentalFoundationApi
-import androidx.compose.foundation.border
-import androidx.compose.foundation.combinedClickable
-import androidx.compose.foundation.layout.Arrangement
-import androidx.compose.foundation.layout.Column
-import androidx.compose.foundation.layout.Row
-import androidx.compose.foundation.layout.fillMaxSize
-import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.padding
-import androidx.compose.foundation.shape.RoundedCornerShape
-import androidx.compose.foundation.text.InlineTextContent
-import androidx.compose.foundation.text.appendInlineContent
-import androidx.compose.material.LocalTextStyle
-import androidx.compose.material.MaterialTheme
-import androidx.compose.material.Surface
-import androidx.compose.material.Text
-import androidx.compose.runtime.Composable
-import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.remember
-import androidx.compose.runtime.setValue
-import androidx.compose.ui.Alignment
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.draw.clip
-import androidx.compose.ui.layout.ContentScale
-import androidx.compose.ui.platform.LocalClipboardManager
-import androidx.compose.ui.res.stringResource
-import androidx.compose.ui.text.AnnotatedString
-import androidx.compose.ui.text.Placeholder
-import androidx.compose.ui.text.PlaceholderVerticalAlign
-import androidx.compose.ui.text.buildAnnotatedString
-import androidx.compose.ui.text.withStyle
-import androidx.compose.ui.unit.dp
-import androidx.compose.ui.unit.sp
-import androidx.compose.ui.window.Dialog
-import androidx.compose.ui.window.DialogProperties
-import coil.compose.AsyncImage
-import coil.compose.AsyncImagePainter
-import com.google.accompanist.pager.ExperimentalPagerApi
-import com.google.accompanist.pager.PagerState
-import com.vitorpamplona.amethyst.R
-import com.vitorpamplona.amethyst.ui.actions.CloseButton
-import com.vitorpamplona.amethyst.ui.actions.LoadingAnimation
-import com.vitorpamplona.amethyst.ui.actions.SaveToGallery
-import net.engawapg.lib.zoomable.rememberZoomState
-import net.engawapg.lib.zoomable.zoomable
-
-@Composable
-@OptIn(ExperimentalFoundationApi::class)
-fun ZoomableImageView(word: String, images: List<String> = listOf(word)) {
-    val clipboardManager = LocalClipboardManager.current
-
-    // store the dialog open or close state
-    var dialogOpen by remember {
-        mutableStateOf(false)
-    }
-
-    // store the dialog open or close state
-    var imageState by remember {
-        mutableStateOf<AsyncImagePainter.State?>(null)
-    }
-
-    val removedParamsFromUrl = word.split("?")[0].lowercase()
-    if (imageExtensions.any { removedParamsFromUrl.endsWith(it) }) {
-        AsyncImage(
-            model = word,
-            contentDescription = word,
-            contentScale = ContentScale.FillWidth,
-            modifier = Modifier
-                .fillMaxWidth()
-                .clip(shape = RoundedCornerShape(15.dp))
-                .border(
-                    1.dp,
-                    MaterialTheme.colors.onSurface.copy(alpha = 0.12f),
-                    RoundedCornerShape(15.dp)
-                )
-                .combinedClickable(
-                    onClick = { dialogOpen = true },
-                    onLongClick = { clipboardManager.setText(AnnotatedString(word)) }
-                ),
-            onLoading = {
-                imageState = it
-            },
-            onSuccess = {
-                imageState = it
-            }
-        )
-
-        if (imageState !is AsyncImagePainter.State.Success) {
-            ClickableUrl(urlText = "$word ", url = word)
-
-            val myId = "inlineContent"
-            val emptytext = buildAnnotatedString {
-                withStyle(
-                    LocalTextStyle.current.copy(color = MaterialTheme.colors.primary).toSpanStyle()
-                ) {
-                    append("")
-                    appendInlineContent(myId, "[icon]")
-                }
-            }
-            val inlineContent = mapOf(
-                Pair(
-                    myId,
-                    InlineTextContent(
-                        Placeholder(
-                            width = 17.sp,
-                            height = 17.sp,
-                            placeholderVerticalAlign = PlaceholderVerticalAlign.Center
-                        )
-                    ) {
-                        LoadingAnimation()
-                    }
-                )
-            )
-
-            // Empty Text for Size of Icon
-            Text(
-                text = emptytext,
-                inlineContent = inlineContent
-            )
-        }
-    } else {
-        VideoView(word) { dialogOpen = true }
-    }
-
-    if (dialogOpen) {
-        ZoomableImageDialog(word, images, onDismiss = { dialogOpen = false })
-    }
-}
-
-@OptIn(ExperimentalPagerApi::class)
-@Composable
-fun ZoomableImageDialog(imageUrl: String, allImages: List<String> = listOf(imageUrl), onDismiss: () -> Unit) {
-    Dialog(
-        onDismissRequest = onDismiss,
-        properties = DialogProperties(usePlatformDefaultWidth = false)
-    ) {
-        Surface(modifier = Modifier.fillMaxSize(), color = MaterialTheme.colors.background) {
-            Column() {
-                var pagerState: PagerState = remember { PagerState() }
-
-                Row(
-                    modifier = Modifier
-                        .padding(10.dp)
-                        .fillMaxWidth(),
-                    horizontalArrangement = Arrangement.SpaceBetween,
-                    verticalAlignment = Alignment.CenterVertically
-                ) {
-                    CloseButton(onCancel = onDismiss)
-
-                    SaveToGallery(url = allImages[pagerState.currentPage])
-                }
-
-                if (allImages.size > 1) {
-                    SlidingCarousel(
-                        pagerState = pagerState,
-                        itemsCount = allImages.size,
-                        itemContent = { index ->
-                            RenderImageOrVideo(allImages[index])
-                        }
-                    )
-                } else {
-                    RenderImageOrVideo(imageUrl)
-                }
-            }
-        }
-    }
-}
-
-@Composable
-private fun RenderImageOrVideo(imageUrl: String) {
-    val removedParamsFromUrl = imageUrl.split("?")[0].lowercase()
-    if (imageExtensions.any { removedParamsFromUrl.endsWith(it) }) {
-        AsyncImage(
-            model = imageUrl,
-            contentDescription = stringResource(id = R.string.profile_image),
-            contentScale = ContentScale.FillWidth,
-            modifier = Modifier
-                .fillMaxSize()
-                .zoomable(rememberZoomState())
-        )
-    } else {
-        Row(verticalAlignment = Alignment.CenterVertically, modifier = Modifier.fillMaxSize(1f)) {
-            VideoView(imageUrl)
-        }
-    }
-}

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/ChannelFeedFilter.kt

@@ -5,7 +5,7 @@ import com.vitorpamplona.amethyst.model.Channel
 import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.model.Note
 
-object ChannelFeedFilter : FeedFilter<Note>() {
+object ChannelFeedFilter : AdditiveFeedFilter<Note>() {
     lateinit var account: Account
     lateinit var channel: Channel
 
@@ -22,4 +22,14 @@ object ChannelFeedFilter : FeedFilter<Note>() {
             .sortedBy { it.createdAt() }
             .reversed()
     }
+
+    override fun applyFilter(collection: Set<Note>): Set<Note> {
+        return collection
+            .filter { it.idHex in channel.notes.keys && account.isAcceptable(it) }
+            .toSet()
+    }
+
+    override fun sort(collection: Set<Note>): List<Note> {
+        return collection.sortedBy { it.createdAt() }.reversed()
+    }
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/ChatroomFeedFilter.kt

@@ -5,7 +5,7 @@ import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.model.User
 
-object ChatroomFeedFilter : FeedFilter<Note>() {
+object ChatroomFeedFilter : AdditiveFeedFilter<Note>() {
     var account: Account? = null
     var withUser: User? = null
 
@@ -30,4 +30,23 @@ object ChatroomFeedFilter : FeedFilter<Note>() {
             .sortedBy { it.createdAt() }
             .reversed()
     }
+
+    override fun applyFilter(collection: Set<Note>): Set<Note> {
+        val myAccount = account
+        val myUser = withUser
+
+        if (myAccount == null || myUser == null) return emptySet()
+
+        val messages = myAccount
+            .userProfile()
+            .privateChatrooms[myUser] ?: return emptySet()
+
+        return collection
+            .filter { it in messages.roomMessages && account?.isAcceptable(it) == true }
+            .toSet()
+    }
+
+    override fun sort(collection: Set<Note>): List<Note> {
+        return collection.sortedBy { it.createdAt() }.reversed()
+    }
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/ChatroomListKnownFeedFilter.kt

@@ -10,7 +10,7 @@ object ChatroomListKnownFeedFilter : FeedFilter<Note>() {
     override fun feed(): List<Note> {
         val me = account.userProfile()
 
-        val privateChatrooms = account.userProfile().privateChatrooms
+        val privateChatrooms = me.privateChatrooms
         val messagingWith = privateChatrooms.keys.filter {
             me.hasSentMessagesTo(it) && account.isAcceptable(it)
         }

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/FeedFilter.kt

@@ -4,7 +4,7 @@ import android.util.Log
 import kotlin.time.ExperimentalTime
 import kotlin.time.measureTimedValue
 
-abstract class FeedFilter<T>() {
+abstract class FeedFilter<T> {
     @OptIn(ExperimentalTime::class)
     fun loadTop(): List<T> {
         val (feed, elapsed) = measureTimedValue {
@@ -17,3 +17,24 @@ abstract class FeedFilter<T>() {
 
     abstract fun feed(): List<T>
 }
+
+abstract class AdditiveFeedFilter<T> : FeedFilter<T>() {
+    abstract fun applyFilter(collection: Set<T>): Set<T>
+    abstract fun sort(collection: Set<T>): List<T>
+
+    @OptIn(ExperimentalTime::class)
+    fun updateListWith(oldList: List<T>, newItems: Set<T>): List<T> {
+        val (feed, elapsed) = measureTimedValue {
+            val newItemsToBeAdded = applyFilter(newItems)
+            if (newItemsToBeAdded.isNotEmpty()) {
+                val newList = oldList.toSet() + newItemsToBeAdded
+                sort(newList).take(1000)
+            } else {
+                oldList
+            }
+        }
+
+        Log.d("Time", "${this.javaClass.simpleName} Feed in $elapsed with ${feed.size} objects")
+        return feed
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/GlobalFeedFilter.kt

@@ -5,21 +5,32 @@ import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.service.model.*
 
-object GlobalFeedFilter : FeedFilter<Note>() {
+object GlobalFeedFilter : AdditiveFeedFilter<Note>() {
     lateinit var account: Account
 
     override fun feed(): List<Note> {
-        val followChannels = account.followingChannels()
+        val notes = innerApplyFilter(LocalCache.notes.values)
+        val longFormNotes = innerApplyFilter(LocalCache.addressables.values)
+
+        return sort(notes + longFormNotes)
+    }
+
+    override fun applyFilter(collection: Set<Note>): Set<Note> {
+        return innerApplyFilter(collection)
+    }
+
+    private fun innerApplyFilter(collection: Collection<Note>): Set<Note> {
+        val followChannels = account.followingChannels
         val followUsers = account.followingKeySet()
         val now = System.currentTimeMillis() / 1000
 
-        val notes = LocalCache.notes.values
+        return collection
             .asSequence()
             .filter {
                 it.event is BaseTextNoteEvent && it.replyTo.isNullOrEmpty()
             }
             .filter {
-                val channel = it.channel()
+                val channel = it.channelHex()
                 // does not show events already in the public chat list
                 (channel == null || channel !in followChannels) &&
                     // does not show people the user already follows
@@ -30,29 +41,10 @@ object GlobalFeedFilter : FeedFilter<Note>() {
                 // Do not show notes with the creation time exceeding the current time, as they will always stay at the top of the global feed, which is cheating.
                 it.createdAt()!! <= now
             }
-            .toList()
+            .toSet()
+    }
 
-        val longFormNotes = LocalCache.addressables.values
+    override fun sort(collection: Set<Note>): List<Note> {
-            .asSequence()
+        return collection.sortedBy { it.createdAt() }.reversed()
-            .filter {
-                it.event is LongTextNoteEvent && it.replyTo.isNullOrEmpty()
-            }
-            .filter {
-                val channel = it.channel()
-                // does not show events already in the public chat list
-                (channel == null || channel !in followChannels) &&
-                    // does not show people the user already follows
-                    (it.author?.pubkeyHex !in followUsers)
-            }
-            .filter { account.isAcceptable(it) }
-            .filter {
-                // Do not show notes with the creation time exceeding the current time, as they will always stay at the top of the global feed, which is cheating.
-                it.createdAt()!! <= now
-            }
-            .toList()
-
-        return (notes + longFormNotes)
-            .sortedBy { it.createdAt() }
-            .reversed()
     }
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/HashtagFeedFilter.kt

@@ -8,14 +8,27 @@ import com.vitorpamplona.amethyst.service.model.LongTextNoteEvent
 import com.vitorpamplona.amethyst.service.model.PrivateDmEvent
 import com.vitorpamplona.amethyst.service.model.TextNoteEvent
 
-object HashtagFeedFilter : FeedFilter<Note>() {
+object HashtagFeedFilter : AdditiveFeedFilter<Note>() {
     lateinit var account: Account
     var tag: String? = null
 
-    override fun feed(): List<Note> {
+    fun loadHashtag(account: Account, tag: String?) {
-        val myTag = tag ?: return emptyList()
+        this.account = account
+        this.tag = tag
+    }
 
-        return LocalCache.notes.values
+    override fun feed(): List<Note> {
+        return sort(innerApplyFilter(LocalCache.notes.values))
+    }
+
+    override fun applyFilter(collection: Set<Note>): Set<Note> {
+        return innerApplyFilter(collection)
+    }
+
+    private fun innerApplyFilter(collection: Collection<Note>): Set<Note> {
+        val myTag = tag ?: return emptySet()
+
+        return collection
             .asSequence()
             .filter {
                 (
@@ -27,13 +40,10 @@ object HashtagFeedFilter : FeedFilter<Note>() {
                     it.event?.isTaggedHash(myTag) == true
             }
             .filter { account.isAcceptable(it) }
-            .sortedBy { it.createdAt() }
+            .toSet()
-            .toList()
-            .reversed()
     }
 
-    fun loadHashtag(account: Account, tag: String?) {
+    override fun sort(collection: Set<Note>): List<Note> {
-        this.account = account
+        return collection.sortedBy { it.createdAt() }.reversed()
-        this.tag = tag
     }
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/HomeConversationsFeedFilter.kt

@@ -6,15 +6,24 @@ import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.service.model.PollNoteEvent
 import com.vitorpamplona.amethyst.service.model.TextNoteEvent
 
-object HomeConversationsFeedFilter : FeedFilter<Note>() {
+object HomeConversationsFeedFilter : AdditiveFeedFilter<Note>() {
     lateinit var account: Account
 
     override fun feed(): List<Note> {
+        return sort(innerApplyFilter(LocalCache.notes.values))
+    }
+
+    override fun applyFilter(collection: Set<Note>): Set<Note> {
+        return innerApplyFilter(collection)
+    }
+
+    private fun innerApplyFilter(collection: Collection<Note>): Set<Note> {
         val user = account.userProfile()
         val followingKeySet = user.cachedFollowingKeySet()
         val followingTagSet = user.cachedFollowingTagSet()
 
-        return LocalCache.notes.values
+        return collection
+            .asSequence()
             .filter {
                 (it.event is TextNoteEvent || it.event is PollNoteEvent) &&
                     (it.author?.pubkeyHex in followingKeySet || (it.event?.isTaggedHashes(followingTagSet) ?: false)) &&
@@ -22,7 +31,10 @@ object HomeConversationsFeedFilter : FeedFilter<Note>() {
                     it.author?.let { !account.isHidden(it) } ?: true &&
                     !it.isNewThread()
             }
-            .sortedBy { it.createdAt() }
+            .toSet()
-            .reversed()
+    }
+
+    override fun sort(collection: Set<Note>): List<Note> {
+        return collection.sortedBy { it.createdAt() }.reversed()
     }
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/HomeNewThreadFeedFilter.kt

@@ -8,34 +8,38 @@ import com.vitorpamplona.amethyst.service.model.PollNoteEvent
 import com.vitorpamplona.amethyst.service.model.RepostEvent
 import com.vitorpamplona.amethyst.service.model.TextNoteEvent
 
-object HomeNewThreadFeedFilter : FeedFilter<Note>() {
+object HomeNewThreadFeedFilter : AdditiveFeedFilter<Note>() {
     lateinit var account: Account
 
     override fun feed(): List<Note> {
+        val notes = innerApplyFilter(LocalCache.notes.values)
+        val longFormNotes = innerApplyFilter(LocalCache.addressables.values)
+
+        return sort(notes + longFormNotes)
+    }
+
+    override fun applyFilter(collection: Set<Note>): Set<Note> {
+        return innerApplyFilter(collection)
+    }
+
+    private fun innerApplyFilter(collection: Collection<Note>): Set<Note> {
         val user = account.userProfile()
         val followingKeySet = user.cachedFollowingKeySet()
         val followingTagSet = user.cachedFollowingTagSet()
 
-        val notes = LocalCache.notes.values
+        return collection
+            .asSequence()
             .filter { it ->
-                (it.event is TextNoteEvent || it.event is RepostEvent || it.event is PollNoteEvent) &&
+                (it.event is TextNoteEvent || it.event is RepostEvent || it.event is LongTextNoteEvent || it.event is PollNoteEvent) &&
                     (it.author?.pubkeyHex in followingKeySet || (it.event?.isTaggedHashes(followingTagSet) ?: false)) &&
                     // && account.isAcceptable(it)  // This filter follows only. No need to check if acceptable
                     it.author?.let { !account.isHidden(it.pubkeyHex) } ?: true &&
                     it.isNewThread()
             }
+            .toSet()
+    }
 
-        val longFormNotes = LocalCache.addressables.values
+    override fun sort(collection: Set<Note>): List<Note> {
-            .filter { it ->
+        return collection.sortedBy { it.createdAt() }.reversed()
-                (it.event is LongTextNoteEvent) &&
-                    (it.author?.pubkeyHex in followingKeySet || (it.event?.isTaggedHashes(followingTagSet) ?: false)) &&
-                    // && account.isAcceptable(it)  // This filter follows only. No need to check if acceptable
-                    it.author?.let { !account.isHidden(it.pubkeyHex) } ?: true &&
-                    it.isNewThread()
-            }
-
-        return (notes + longFormNotes)
-            .sortedBy { it.createdAt() }
-            .reversed()
     }
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/NotificationFeedFilter.kt

@@ -6,14 +6,22 @@ import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.model.User
 import com.vitorpamplona.amethyst.service.model.*
 
-object NotificationFeedFilter : FeedFilter<Note>() {
+object NotificationFeedFilter : AdditiveFeedFilter<Note>() {
     lateinit var account: Account
 
     override fun feed(): List<Note> {
+        return sort(innerApplyFilter(LocalCache.notes.values))
+    }
+
+    override fun applyFilter(collection: Set<Note>): Set<Note> {
+        return innerApplyFilter(collection)
+    }
+
+    private fun innerApplyFilter(collection: Collection<Note>): Set<Note> {
         val loggedInUser = account.userProfile()
         val loggedInUserHex = loggedInUser.pubkeyHex
 
-        return LocalCache.notes.values.filter {
+        return collection.filter {
             it.event !is ChannelCreateEvent &&
                 it.event !is ChannelMetadataEvent &&
                 it.event !is LnZapRequestEvent &&
@@ -23,9 +31,11 @@ object NotificationFeedFilter : FeedFilter<Note>() {
                 it.event?.isTaggedUser(loggedInUserHex) ?: false &&
                 (it.author == null || !account.isHidden(it.author!!.pubkeyHex)) &&
                 tagsAnEventByUser(it, loggedInUser)
-        }
+        }.toSet()
-            .sortedBy { it.createdAt() }
+    }
-            .reversed()
+
+    override fun sort(collection: Set<Note>): List<Note> {
+        return collection.sortedBy { it.createdAt() }.reversed()
     }
 
     fun tagsAnEventByUser(note: Note, author: User): Boolean {

app/src/main/java/com/vitorpamplona/amethyst/ui/navigation/AppBottomBar.kt

@@ -42,6 +42,7 @@ import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
+import kotlin.time.ExperimentalTime
 
 val bottomNavigationItems = listOf(
     Route.Home,
@@ -135,6 +136,7 @@ fun AppBottomBar(navController: NavHostController, accountViewModel: AccountView
     }
 }
 
+@OptIn(ExperimentalTime::class)
 @Composable
 private fun NotifiableIcon(route: Route, selected: Boolean, accountViewModel: AccountViewModel) {
     Box(Modifier.size(if ("Home" == route.base) 25.dp else 23.dp)) {
@@ -159,13 +161,13 @@ private fun NotifiableIcon(route: Route, selected: Boolean, accountViewModel: Ac
 
         LaunchedEffect(key1 = notif) {
             withContext(Dispatchers.IO) {
-                hasNewItems = route.hasNewItems(account, notif.cache)
+                hasNewItems = route.hasNewItems(account, notif.cache, emptySet())
             }
         }
 
         LaunchedEffect(key1 = db) {
             withContext(Dispatchers.IO) {
-                hasNewItems = route.hasNewItems(account, notif.cache)
+                hasNewItems = route.hasNewItems(account, notif.cache, db)
             }
         }
 

app/src/main/java/com/vitorpamplona/amethyst/ui/navigation/AppNavigation.kt

@@ -1,5 +1,7 @@
 package com.vitorpamplona.amethyst.ui.navigation
 
+import androidx.compose.foundation.ExperimentalFoundationApi
+import androidx.compose.foundation.pager.rememberPagerState
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
@@ -11,8 +13,6 @@ import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavHostController
 import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.composable
-import com.google.accompanist.pager.ExperimentalPagerApi
-import com.google.accompanist.pager.rememberPagerState
 import com.vitorpamplona.amethyst.ui.dal.GlobalFeedFilter
 import com.vitorpamplona.amethyst.ui.dal.HomeConversationsFeedFilter
 import com.vitorpamplona.amethyst.ui.dal.HomeNewThreadFeedFilter
@@ -35,7 +35,7 @@ import com.vitorpamplona.amethyst.ui.screen.loggedIn.ProfileScreen
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.SearchScreen
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.ThreadScreen
 
-@OptIn(ExperimentalPagerApi::class)
+@OptIn(ExperimentalFoundationApi::class)
 @Composable
 fun AppNavigation(
     navController: NavHostController,

app/src/main/java/com/vitorpamplona/amethyst/ui/navigation/Routes.kt

@@ -10,6 +10,8 @@ import androidx.navigation.navArgument
 import com.vitorpamplona.amethyst.NotificationCache
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.ui.dal.AdditiveFeedFilter
 import com.vitorpamplona.amethyst.ui.dal.ChatroomListKnownFeedFilter
 import com.vitorpamplona.amethyst.ui.dal.HomeNewThreadFeedFilter
 import com.vitorpamplona.amethyst.ui.dal.NotificationFeedFilter
@@ -17,7 +19,7 @@ import com.vitorpamplona.amethyst.ui.dal.NotificationFeedFilter
 sealed class Route(
     val route: String,
     val icon: Int,
-    val hasNewItems: (Account, NotificationCache) -> Boolean = { _, _ -> false },
+    val hasNewItems: (Account, NotificationCache, Set<com.vitorpamplona.amethyst.model.Note>) -> Boolean = { _, _, _ -> false },
     val arguments: List<NamedNavArgument> = emptyList()
 ) {
     val base: String
@@ -30,7 +32,7 @@ sealed class Route(
             navArgument("scrollToTop") { type = NavType.BoolType; defaultValue = false },
             navArgument("nip47") { type = NavType.StringType; nullable = true; defaultValue = null }
         ),
-        hasNewItems = { accountViewModel, cache -> homeHasNewItems(accountViewModel, cache) }
+        hasNewItems = { accountViewModel, cache, newNotes -> HomeLatestItem.hasNewItems(accountViewModel, cache, newNotes) }
     )
 
     object Search : Route(
@@ -43,13 +45,13 @@ sealed class Route(
         route = "Notification?scrollToTop={scrollToTop}",
         icon = R.drawable.ic_notifications,
         arguments = listOf(navArgument("scrollToTop") { type = NavType.BoolType; defaultValue = false }),
-        hasNewItems = { accountViewModel, cache -> notificationHasNewItems(accountViewModel, cache) }
+        hasNewItems = { accountViewModel, cache, newNotes -> NotificationLatestItem.hasNewItems(accountViewModel, cache, newNotes) }
     )
 
     object Message : Route(
         route = "Message",
         icon = R.drawable.ic_dm,
-        hasNewItems = { accountViewModel, cache -> messagesHasNewItems(accountViewModel, cache) }
+        hasNewItems = { accountViewModel, cache, newNotes -> MessagesLatestItem.hasNewItems(accountViewModel, cache, newNotes) }
     )
 
     object BlockedUsers : Route(
@@ -108,36 +110,72 @@ fun currentRoute(navController: NavHostController): String? {
     return navBackStackEntry?.destination?.route
 }
 
-private fun homeHasNewItems(account: Account, cache: NotificationCache): Boolean {
+open class LatestItem {
-    val lastTime = cache.load("HomeFollows")
+    var newestItemPerAccount: Map<String, Note?> = mapOf()
 
-    HomeNewThreadFeedFilter.account = account
+    fun updateNewestItem(newNotes: Set<Note>, account: Account, filter: AdditiveFeedFilter<Note>): Note? {
+        val newestItem = newestItemPerAccount[account.userProfile().pubkeyHex]
 
-    return (
+        if (newestItem == null) {
-        HomeNewThreadFeedFilter.feed().firstOrNull { it.createdAt() != null }?.createdAt()
+            newestItemPerAccount = newestItemPerAccount + Pair(
-            ?: 0
+                account.userProfile().pubkeyHex,
-        ) > lastTime
+                filter.feed().firstOrNull { it.createdAt() != null }
+            )
+        } else {
+            newestItemPerAccount = newestItemPerAccount + Pair(
+                account.userProfile().pubkeyHex,
+                filter.sort(filter.applyFilter(newNotes) + newestItem).first()
+            )
+        }
+
+        return newestItemPerAccount[account.userProfile().pubkeyHex]
+    }
 }
 
-private fun notificationHasNewItems(account: Account, cache: NotificationCache): Boolean {
+object HomeLatestItem : LatestItem() {
-    val lastTime = cache.load("Notification")
+    fun hasNewItems(
+        account: Account,
+        cache: NotificationCache,
+        newNotes: Set<Note>
+    ): Boolean {
+        val lastTime = cache.load("HomeFollows")
+        HomeNewThreadFeedFilter.account = account
 
-    NotificationFeedFilter.account = account
+        val newestItem = updateNewestItem(newNotes, account, HomeNewThreadFeedFilter)
 
-    return (
+        return (newestItem?.createdAt() ?: 0) > lastTime
-        NotificationFeedFilter.feed().firstOrNull { it.createdAt() != null }?.createdAt()
+    }
-            ?: 0
-        ) > lastTime
 }
 
-private fun messagesHasNewItems(account: Account, cache: NotificationCache): Boolean {
+object NotificationLatestItem : LatestItem() {
-    ChatroomListKnownFeedFilter.account = account
+    fun hasNewItems(
+        account: Account,
+        cache: NotificationCache,
+        newNotes: Set<Note>
+    ): Boolean {
+        val lastTime = cache.load("Notification")
+        NotificationFeedFilter.account = account
 
-    val note = ChatroomListKnownFeedFilter.feed().firstOrNull {
+        val newestItem = updateNewestItem(newNotes, account, NotificationFeedFilter)
-        it.createdAt() != null && it.channel() == null && it.author != account.userProfile()
-    } ?: return false
 
-    val lastTime = cache.load("Room/${note.author?.pubkeyHex}")
+        return (newestItem?.createdAt() ?: 0) > lastTime
-
+    }
-    return (note.createdAt() ?: 0) > lastTime
+}
+
+object MessagesLatestItem {
+    fun hasNewItems(
+        account: Account,
+        cache: NotificationCache,
+        newNotes: Set<Note>
+    ): Boolean {
+        ChatroomListKnownFeedFilter.account = account
+
+        val note = ChatroomListKnownFeedFilter.loadTop().firstOrNull {
+            it.createdAt() != null && it.channel() == null && it.author != account.userProfile()
+        } ?: return false
+
+        val lastTime = cache.load("Room/${note.author?.pubkeyHex}")
+
+        return (note.createdAt() ?: 0) > lastTime
+    }
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/note/ChatroomMessageCompose.kt

@@ -246,30 +246,32 @@ fun ChatroomMessageCompose(
                             Row(verticalAlignment = Alignment.CenterVertically) {
                                 val event = note.event
                                 if (event is ChannelCreateEvent) {
+                                    val channelInfo = event.channelInfo()
                                     Text(
                                         text = note.author?.toBestDisplayName()
                                             .toString() + " ${stringResource(R.string.created)} " + (
-                                            event.channelInfo().name
+                                            channelInfo.name
                                                 ?: ""
                                             ) + " ${stringResource(R.string.with_description_of)} '" + (
-                                            event.channelInfo().about
+                                            channelInfo.about
                                                 ?: ""
                                             ) + "', ${stringResource(R.string.and_picture)} '" + (
-                                            event.channelInfo().picture
+                                            channelInfo.picture
                                                 ?: ""
                                             ) + "'"
                                     )
                                 } else if (event is ChannelMetadataEvent) {
+                                    val channelInfo = event.channelInfo()
                                     Text(
                                         text = note.author?.toBestDisplayName()
                                             .toString() + " ${stringResource(R.string.changed_chat_name_to)} '" + (
-                                            event.channelInfo().name
+                                            channelInfo.name
                                                 ?: ""
                                             ) + "$', {stringResource(R.string.description_to)} '" + (
-                                            event.channelInfo().about
+                                            channelInfo.about
                                                 ?: ""
                                             ) + "', ${stringResource(R.string.and_picture_to)} '" + (
-                                            event.channelInfo().picture
+                                            channelInfo.picture
                                                 ?: ""
                                             ) + "'"
                                     )
@@ -371,6 +373,7 @@ private fun RelayBadges(baseNote: Note) {
             ) {
                 RobohashFallbackAsyncImage(
                     robot = "https://$url/favicon.ico",
+                    robotSize = 15.dp,
                     model = "https://$url/favicon.ico",
                     contentDescription = stringResource(id = R.string.relay_icon),
                     colorFilter = ColorFilter.colorMatrix(ColorMatrix().apply { setToSaturation(0f) }),

app/src/main/java/com/vitorpamplona/amethyst/ui/note/MessageSetCompose.kt

@@ -26,7 +26,9 @@ import androidx.compose.ui.unit.dp
 import androidx.navigation.NavController
 import com.vitorpamplona.amethyst.NotificationCache
 import com.vitorpamplona.amethyst.R
+import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.service.model.ChannelMessageEvent
+import com.vitorpamplona.amethyst.service.model.PrivateDmEvent
 import com.vitorpamplona.amethyst.ui.screen.MessageSetCard
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import kotlinx.coroutines.Dispatchers
@@ -46,7 +48,7 @@ fun MessageSetCompose(messageSetCard: MessageSetCard, isInnerNote: Boolean = fal
     } else {
         var isNew by remember { mutableStateOf<Boolean>(false) }
 
-        LaunchedEffect(key1 = messageSetCard) {
+        LaunchedEffect(key1 = messageSetCard.createdAt()) {
             withContext(Dispatchers.IO) {
                 isNew =
                     messageSetCard.createdAt() > NotificationCache.load(routeForLastRead)
@@ -64,14 +66,29 @@ fun MessageSetCompose(messageSetCard: MessageSetCard, isInnerNote: Boolean = fal
         Column(
             modifier = Modifier.background(backgroundColor).combinedClickable(
                 onClick = {
-                    if (noteEvent !is ChannelMessageEvent) {
+                    if (noteEvent is ChannelMessageEvent) {
-                        navController.navigate("Note/${note.idHex}") {
-                            launchSingleTop = true
-                        }
-                    } else {
                         note.channel()?.let {
                             navController.navigate("Channel/${it.idHex}")
                         }
+                    } else if (noteEvent is PrivateDmEvent) {
+                        val replyAuthorBase =
+                            (note.event as? PrivateDmEvent)
+                                ?.recipientPubKey()
+                                ?.let { LocalCache.getOrCreateUser(it) }
+
+                        var userToComposeOn = note.author!!
+
+                        if (replyAuthorBase != null) {
+                            if (note.author == accountViewModel.userProfile()) {
+                                userToComposeOn = replyAuthorBase
+                            }
+                        }
+
+                        navController.navigate("Room/${userToComposeOn.pubkeyHex}")
+                    } else {
+                        navController.navigate("Note/${note.idHex}") {
+                            launchSingleTop = true
+                        }
                     }
                 },
                 onLongClick = { popupExpanded = true }

app/src/main/java/com/vitorpamplona/amethyst/ui/note/MultiSetCompose.kt

@@ -61,7 +61,7 @@ fun MultiSetCompose(multiSetCard: MultiSetCard, routeForLastRead: String, accoun
     } else {
         var isNew by remember { mutableStateOf<Boolean>(false) }
 
-        LaunchedEffect(key1 = multiSetCard) {
+        LaunchedEffect(key1 = multiSetCard.createdAt()) {
             withContext(Dispatchers.IO) {
                 isNew = multiSetCard.createdAt > NotificationCache.load(routeForLastRead)
 
@@ -244,7 +244,7 @@ fun FastNoteAuthorPicture(
     val userState by author.live().metadata.observeAsState()
     val user = userState?.user ?: return
 
-    val showFollowingMark = userAccount.isFollowingCached(user) || user == userAccount
+    val showFollowingMark = userAccount.isFollowingCached(user) || user === userAccount
 
     UserPicture(
         userHex = user.pubkeyHex,

app/src/main/java/com/vitorpamplona/amethyst/ui/note/NIP05VerificationDisplay.kt

@@ -96,7 +96,6 @@ fun ObserveDisplayNip05Status(baseUser: User, columnModifier: Modifier = Modifie
 
     user.nip05()?.let { nip05 ->
         if (nip05.split("@").size == 2) {
-            val nip05Verified by nip05VerificationAsAState(user.info!!, user.pubkeyHex)
             Column(modifier = columnModifier) {
                 Row(verticalAlignment = Alignment.CenterVertically) {
                     if (nip05.split("@")[0] != "_") {
@@ -108,6 +107,7 @@ fun ObserveDisplayNip05Status(baseUser: User, columnModifier: Modifier = Modifie
                         )
                     }
 
+                    val nip05Verified by nip05VerificationAsAState(user.info!!, user.pubkeyHex)
                     if (nip05Verified == null) {
                         Icon(
                             tint = Color.Yellow,

app/src/main/java/com/vitorpamplona/amethyst/ui/note/NoteCompose.kt

@@ -5,8 +5,6 @@ import android.graphics.Bitmap
 import android.util.Log
 import androidx.compose.foundation.*
 import androidx.compose.foundation.layout.*
-import androidx.compose.foundation.lazy.grid.GridCells
-import androidx.compose.foundation.lazy.grid.LazyVerticalGrid
 import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.foundation.shape.CutCornerShape
 import androidx.compose.foundation.shape.RoundedCornerShape
@@ -61,7 +59,6 @@ import com.vitorpamplona.amethyst.ui.theme.Following
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import java.math.BigDecimal
-import kotlin.math.ceil
 import kotlin.time.ExperimentalTime
 import kotlin.time.measureTimedValue
 
@@ -96,7 +93,7 @@ fun NoteCompose(
         )
     }
 
-    Log.d("Time", "Note Compose in $elapsed for ${baseNote.event?.kind()} ${baseNote.event?.content()?.split("\n")?.get(0)?.take(100)}")
+    Log.d("Time", "Note Compose in $elapsed for ${baseNote.idHex} ${baseNote.event?.kind()} ${baseNote.event?.content()?.split("\n")?.get(0)?.take(100)}")
 }
 
 @OptIn(ExperimentalFoundationApi::class)
@@ -170,6 +167,8 @@ fun NoteComposeInner(
         ChannelHeader(baseChannel = baseChannel, account = account, navController = navController)
     } else if (noteEvent is BadgeDefinitionEvent) {
         BadgeDisplay(baseNote = note)
+    } else if (noteEvent is FileHeaderEvent) {
+        FileHeaderDisplay(note)
     } else {
         var isNew by remember { mutableStateOf<Boolean>(false) }
 
@@ -299,7 +298,7 @@ fun NoteComposeInner(
                         }
 
                         if (noteEvent is RepostEvent) {
-                            note.replyTo?.lastOrNull()?.let {
+                            baseNote.replyTo?.lastOrNull()?.let {
                                 RelayBadges(it)
                             }
                         } else {
@@ -496,13 +495,13 @@ fun NoteComposeInner(
                         noteEvent.recipientPubKey() != loggedIn.pubkeyHex &&
                         note.author !== loggedIn
                     ) {
-                        val recepient = noteEvent.recipientPubKey()?.let { LocalCache.checkGetOrCreateUser(it) }
+                        val recipient = noteEvent.recipientPubKey()?.let { LocalCache.checkGetOrCreateUser(it) }
 
                         TranslatableRichTextViewer(
                             stringResource(
                                 id = R.string.private_conversation_notification,
                                 "@${note.author?.pubkeyNpub()}",
-                                "@${recepient?.pubkeyNpub()}"
+                                "@${recipient?.pubkeyNpub()}"
                             ),
                             canPreview = !makeItShort,
                             Modifier.fillMaxWidth(),
@@ -582,7 +581,9 @@ fun DisplayFollowingHashtagsInPost(
     var firstTag by remember { mutableStateOf<String?>(null) }
 
     LaunchedEffect(key1 = noteEvent) {
-        firstTag = noteEvent.firstIsTaggedHashes(account.followingTagSet())
+        withContext(Dispatchers.IO) {
+            firstTag = noteEvent.firstIsTaggedHashes(account.followingTagSet())
+        }
     }
 
     Column() {
@@ -777,6 +778,30 @@ fun BadgeDisplay(baseNote: Note) {
     }
 }
 
+@Composable
+fun FileHeaderDisplay(note: Note) {
+    val event = (note.event as? FileHeaderEvent) ?: return
+
+    val fullUrl = event.url() ?: return
+    val blurHash = event.blurhash()
+    val hash = event.hash()
+    val description = event.content
+    val removedParamsFromUrl = fullUrl.split("?")[0].lowercase()
+    val isImage = imageExtensions.any { removedParamsFromUrl.endsWith(it) }
+    val isVideo = videoExtensions.any { removedParamsFromUrl.endsWith(it) }
+
+    if (isImage || isVideo) {
+        val content = if (isImage) {
+            ZoomableImage(fullUrl, description, hash, blurHash)
+        } else {
+            ZoomableVideo(fullUrl, description, hash)
+        }
+        ZoomableContentView(content = content, listOf(content))
+    } else {
+        UrlPreview(fullUrl, "$fullUrl ")
+    }
+}
+
 @Composable
 private fun LongFormHeader(noteEvent: LongTextNoteEvent, note: Note, loggedIn: User) {
     Row(
@@ -869,67 +894,102 @@ private fun LongFormHeader(noteEvent: LongTextNoteEvent, note: Note, loggedIn: U
 @Composable
 private fun RelayBadges(baseNote: Note) {
     val noteRelaysState by baseNote.live().relays.observeAsState()
-    val noteRelays = noteRelaysState?.note?.relays ?: emptySet()
+    val noteRelays = noteRelaysState?.note ?: return
 
     var expanded by remember { mutableStateOf(false) }
+    var showShowMore by remember { mutableStateOf(false) }
+    var lazyRelayList by remember { mutableStateOf(emptyList<String>()) }
 
-    val relaysToDisplay = (if (expanded) noteRelays else noteRelays.take(3)).toList()
+    LaunchedEffect(key1 = noteRelaysState, key2 = expanded) {
-    val height = (ceil(relaysToDisplay.size / 3.0f) * 17).dp
+        withContext(Dispatchers.IO) {
+            val relayList = noteRelays.relays.map {
+                it.removePrefix("wss://").removePrefix("ws://")
+            }
 
-    val uri = LocalUriHandler.current
+            val relaysToDisplay = if (expanded) relayList else relayList.take(3)
+            val shouldListChange = lazyRelayList.size < 3 || lazyRelayList.size != relayList.size
 
-    Spacer(Modifier.height(10.dp))
+            if (shouldListChange) {
+                lazyRelayList = relaysToDisplay
+            }
 
-    LazyVerticalGrid(
+            val nextShowMore = relayList.size > 3 && !expanded
-        columns = GridCells.Fixed(3),
+            if (nextShowMore != showShowMore) {
-        contentPadding = PaddingValues(start = 4.dp, end = 4.dp),
+                // only triggers recomposition when actually different
-        modifier = Modifier.height(height),
+                showShowMore = nextShowMore
-        userScrollEnabled = false
-    ) {
-        items(relaysToDisplay.size) {
-            val url = relaysToDisplay[it].removePrefix("wss://").removePrefix("ws://")
-
-            Box(
-                Modifier
-                    .padding(1.dp)
-                    .size(15.dp)
-            ) {
-                RobohashFallbackAsyncImage(
-                    robot = "https://$url/favicon.ico",
-                    model = "https://$url/favicon.ico",
-                    contentDescription = stringResource(R.string.relay_icon),
-                    colorFilter = ColorFilter.colorMatrix(ColorMatrix().apply { setToSaturation(0f) }),
-                    modifier = Modifier
-                        .width(13.dp)
-                        .height(13.dp)
-                        .clip(shape = CircleShape)
-                        // .border(1.dp, Color.Red)
-                        .background(MaterialTheme.colors.background)
-                        .clickable(onClick = { uri.openUri("https://$url") })
-                )
             }
         }
     }
 
-    if (noteRelays.size > 3 && !expanded) {
+    Spacer(Modifier.height(10.dp))
-        Row(
+
-            Modifier
+    VerticalRelayPanelWithFlow(lazyRelayList)
-                .fillMaxWidth()
+
-                .height(25.dp),
+    if (showShowMore) {
-            horizontalArrangement = Arrangement.Center,
+        ShowMoreRelaysButton {
-            verticalAlignment = Alignment.Top
+            expanded = true
+        }
+    }
+}
+
+@Composable
+@Stable
+private fun VerticalRelayPanelWithFlow(
+    relays: List<String>
+) {
+    // FlowRow Seems to be a lot faster than LazyVerticalGrid
+    FlowRow() {
+        relays.forEach { url ->
+            RelayIconCompose(url)
+        }
+    }
+}
+
+@Composable
+@Stable
+private fun RelayIconCompose(url: String) {
+    val uri = LocalUriHandler.current
+
+    Box(
+        Modifier
+            .padding(1.dp)
+            .size(15.dp)
+    ) {
+        RobohashFallbackAsyncImage(
+            robot = "https://$url/favicon.ico",
+            robotSize = 15.dp,
+            model = "https://$url/favicon.ico",
+            contentDescription = stringResource(R.string.relay_icon),
+            colorFilter = ColorFilter.colorMatrix(ColorMatrix().apply { setToSaturation(0f) }),
+            modifier = Modifier
+                .width(13.dp)
+                .height(13.dp)
+                .clip(shape = CircleShape)
+                .background(MaterialTheme.colors.background)
+                .clickable(onClick = { uri.openUri("https://$url") })
+        )
+    }
+}
+
+@Composable
+private fun ShowMoreRelaysButton(onClick: () -> Unit) {
+    Row(
+        Modifier
+            .fillMaxWidth()
+            .height(25.dp),
+        horizontalArrangement = Arrangement.Center,
+        verticalAlignment = Alignment.Top
+    ) {
+        IconButton(
+            modifier = Modifier.then(Modifier.size(24.dp)),
+            onClick = onClick
         ) {
-            IconButton(
+            Icon(
-                modifier = Modifier.then(Modifier.size(24.dp)),
+                imageVector = Icons.Default.ExpandMore,
-                onClick = { expanded = true }
+                null,
-            ) {
+                modifier = Modifier.size(15.dp),
-                Icon(
+                tint = MaterialTheme.colors.onSurface.copy(alpha = 0.32f)
-                    imageVector = Icons.Default.ExpandMore,
+            )
-                    null,
-                    modifier = Modifier.size(15.dp),
-                    tint = MaterialTheme.colors.onSurface.copy(alpha = 0.32f)
-                )
-            }
         }
     }
 }
@@ -968,6 +1028,7 @@ fun NoteAuthorPicture(
         if (author == null) {
             RobohashAsyncImage(
                 robot = "authornotfound",
+                robotSize = size,
                 contentDescription = stringResource(R.string.unknown_author),
                 modifier = modifier
                     .width(size)
@@ -1108,12 +1169,14 @@ fun NoteDropDownMenu(note: Note, popupExpanded: Boolean, onDismiss: () -> Unit,
     }
 
     LaunchedEffect(key1 = note) {
-        state = DropDownParams(
+        withContext(Dispatchers.IO) {
-            accountViewModel.isFollowing(note.author),
+            state = DropDownParams(
-            accountViewModel.isInPrivateBookmarks(note),
+                accountViewModel.isFollowing(note.author),
-            accountViewModel.isInPublicBookmarks(note),
+                accountViewModel.isInPrivateBookmarks(note),
-            accountViewModel.isLoggedUser(note.author)
+                accountViewModel.isInPublicBookmarks(note),
-        )
+                accountViewModel.isLoggedUser(note.author)
+            )
+        }
     }
 
     DropdownMenu(

app/src/main/java/com/vitorpamplona/amethyst/ui/note/PollNote.kt

@@ -48,9 +48,6 @@ fun PollNote(
     accountViewModel: AccountViewModel,
     navController: NavController
 ) {
-    val accountState by accountViewModel.accountLiveData.observeAsState()
-    val account = accountState?.account ?: return
-
     val zapsState by baseNote.live().zaps.observeAsState()
     val zappedNote = zapsState?.note ?: return
 
@@ -72,7 +69,7 @@ fun PollNote(
             verticalAlignment = Alignment.CenterVertically,
             modifier = Modifier.padding(vertical = 3.dp)
         ) {
-            if (zappedNote.author == account.userProfile() || zappedNote.isZappedBy(account.userProfile())) {
+            if (accountViewModel.isLoggedUser(zappedNote.author) || zappedNote.isZappedBy(accountViewModel.userProfile())) {
                 ZapVote(
                     baseNote,
                     accountViewModel,
@@ -90,7 +87,7 @@ fun PollNote(
                             LinearProgressIndicator(
                                 modifier = Modifier.matchParentSize(),
                                 color = color,
-                                progress = optionTally
+                                progress = optionTally.toFloat()
                             )
 
                             Row(
@@ -101,7 +98,7 @@ fun PollNote(
                                     modifier = Modifier.padding(horizontal = 10.dp).width(40.dp)
                                 ) {
                                     Text(
-                                        text = "${(optionTally * 100).roundToInt()}%",
+                                        text = "${(optionTally.toFloat() * 100).roundToInt()}%",
                                         fontWeight = FontWeight.Bold
                                     )
                                 }
@@ -210,7 +207,7 @@ fun ZapVote(
                             )
                             .show()
                     }
-                } else if (zappedNote?.author == account.userProfile()) {
+                } else if (accountViewModel.isLoggedUser(zappedNote?.author)) {
                     scope.launch {
                         Toast
                             .makeText(

app/src/main/java/com/vitorpamplona/amethyst/ui/note/PollNoteViewModel.kt

@@ -5,6 +5,7 @@ import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.model.User
 import com.vitorpamplona.amethyst.service.model.*
 import java.math.BigDecimal
+import java.math.RoundingMode
 import java.util.*
 
 class PollNoteViewModel {
@@ -16,7 +17,9 @@ class PollNoteViewModel {
     var valueMaximum: Int? = null
     var valueMinimum: Int? = null
     private var closedAt: Int? = null
-    var consensusThreshold: Float? = null
+    var consensusThreshold: BigDecimal? = null
+
+    var totalZapped: BigDecimal = BigDecimal.ZERO
 
     fun load(note: Note?) {
         pollNote = note
@@ -24,8 +27,10 @@ class PollNoteViewModel {
         pollOptions = pollEvent?.pollOptions()
         valueMaximum = pollEvent?.getTagInt(VALUE_MAXIMUM)
         valueMinimum = pollEvent?.getTagInt(VALUE_MINIMUM)
-        consensusThreshold = pollEvent?.getTagInt(CONSENSUS_THRESHOLD)?.toFloat()?.div(100)
+        consensusThreshold = pollEvent?.getTagInt(CONSENSUS_THRESHOLD)?.toFloat()?.div(100)?.toBigDecimal()
         closedAt = pollEvent?.getTagInt(CLOSED_AT)
+
+        totalZapped = totalZapped()
     }
 
     fun isVoteAmountAtomic() = valueMaximum != null && valueMinimum != null && valueMinimum == valueMaximum
@@ -73,47 +78,45 @@ class PollNoteViewModel {
         return false
     }
 
-    fun optionVoteTally(op: Int): Float {
+    fun optionVoteTally(op: Int): BigDecimal {
-        val tally = zappedPollOptionAmount(op).toFloat().div(zappedVoteTotal())
+        return if (totalZapped.compareTo(BigDecimal.ZERO) > 0) {
-        return if (tally.isNaN()) { // catch div by 0
+            zappedPollOptionAmount(op).divide(totalZapped, 2, RoundingMode.HALF_UP)
-            0f
+        } else {
-        } else { tally }
+            BigDecimal.ZERO
-    }
-
-    private fun zappedVoteTotal(): Float {
-        var total = 0f
-        pollOptions?.keys?.forEach {
-            total += zappedPollOptionAmount(it).toFloat()
         }
-        return total
     }
 
     fun isPollOptionZappedBy(option: Int, user: User): Boolean {
-        if (pollNote?.zaps?.any { it.key.author == user } == true) {
+        if (pollNote?.zaps?.any { it.key.author === user } == true) {
-            pollNote!!.zaps.mapNotNull { it.value?.event }
+            pollNote!!.zaps
-                .filterIsInstance<LnZapEvent>()
+                .any {
-                .map {
+                    val event = it.value?.event as? LnZapEvent
-                    val zappedOption = it.zappedPollOption()
+                    event?.zappedPollOption() == option && event.zappedRequestAuthor() == user.pubkeyHex
-                    if (zappedOption == option && it.zappedRequestAuthor() == user.pubkeyHex) {
-                        return true
-                    }
                 }
         }
         return false
     }
 
     fun zappedPollOptionAmount(option: Int): BigDecimal {
-        return if (pollNote != null) {
+        return pollNote?.zaps?.values?.sumOf {
-            pollNote!!.zaps.mapNotNull { it.value?.event }
+            val event = it?.event as? LnZapEvent
-                .filterIsInstance<LnZapEvent>()
+            if (event?.zappedPollOption() == option) {
-                .mapNotNull {
+                event.amount ?: BigDecimal(0)
-                    val zappedOption = it.zappedPollOption()
+            } else {
-                    if (zappedOption == option) {
+                BigDecimal(0)
-                        it.amount
+            }
-                    } else { null }
+        } ?: BigDecimal(0)
-                }.sumOf { it }
+    }
-        } else {
+
-            BigDecimal(0)
+    fun totalZapped(): BigDecimal {
-        }
+        return pollNote?.zaps?.values?.sumOf {
+            val zapEvent = (it?.event as? LnZapEvent)
+
+            if (zapEvent?.zappedPollOption() != null) {
+                zapEvent.amount ?: BigDecimal(0)
+            } else {
+                BigDecimal(0)
+            }
+        } ?: BigDecimal(0)
     }
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/note/ReactionsRow.kt

@@ -9,7 +9,6 @@ import androidx.compose.foundation.layout.ExperimentalLayoutApi
 import androidx.compose.foundation.layout.FlowRow
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
-import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
@@ -87,26 +86,28 @@ fun ReactionsRow(baseNote: Note, accountViewModel: AccountViewModel) {
         NewPostView({ wantsToQuote = null }, null, wantsToQuote, account)
     }
 
-    Row(
+    Spacer(modifier = Modifier.height(8.dp))
-        modifier = Modifier
+
-            .padding(top = 8.dp)
+    Row(verticalAlignment = CenterVertically) {
-            .fillMaxWidth(),
+        Row(verticalAlignment = CenterVertically, modifier = Modifier.weight(1f)) {
-        verticalAlignment = Alignment.CenterVertically,
+            ReplyReaction(baseNote, accountViewModel) {
-        horizontalArrangement = Arrangement.SpaceBetween
+                wantsToReplyTo = baseNote
-    ) {
+            }
-        ReplyReaction(baseNote, accountViewModel, Modifier.weight(1f)) {
-            wantsToReplyTo = baseNote
         }
-
+        Row(verticalAlignment = CenterVertically, modifier = Modifier.weight(1f)) {
-        BoostReaction(baseNote, accountViewModel, Modifier.weight(1f)) {
+            BoostReaction(baseNote, accountViewModel) {
-            wantsToQuote = baseNote
+                wantsToQuote = baseNote
+            }
+        }
+        Row(verticalAlignment = CenterVertically, modifier = Modifier.weight(1f)) {
+            LikeReaction(baseNote, accountViewModel)
+        }
+        Row(verticalAlignment = CenterVertically, modifier = Modifier.weight(1f)) {
+            ZapReaction(baseNote, accountViewModel)
+        }
+        Row(verticalAlignment = CenterVertically, modifier = Modifier.weight(1f)) {
+            ViewCountReaction(baseNote.idHex)
         }
-
-        LikeReaction(baseNote, accountViewModel, Modifier.weight(1f))
-
-        ZapReaction(baseNote, accountViewModel, Modifier.weight(1f))
-
-        ViewCountReaction(baseNote, Modifier.weight(1f))
     }
 }
 
@@ -114,14 +115,12 @@ fun ReactionsRow(baseNote: Note, accountViewModel: AccountViewModel) {
 fun ReplyReaction(
     baseNote: Note,
     accountViewModel: AccountViewModel,
-    textModifier: Modifier = Modifier,
     showCounter: Boolean = true,
     onPress: () -> Unit
 ) {
     val repliesState by baseNote.live().replies.observeAsState()
     val replies = repliesState?.note?.replies ?: emptySet()
 
-    val grayTint = MaterialTheme.colors.onSurface.copy(alpha = 0.32f)
     val context = LocalContext.current
     val scope = rememberCoroutineScope()
 
@@ -141,29 +140,32 @@ fun ReplyReaction(
             }
         }
     ) {
-        Icon(
+        ReplyIcon()
-            painter = painterResource(R.drawable.ic_comment),
-            null,
-            modifier = Modifier.size(15.dp),
-            tint = grayTint
-        )
     }
 
     if (showCounter) {
         Text(
             " ${showCount(replies.size)}",
             fontSize = 14.sp,
-            color = grayTint,
+            color = MaterialTheme.colors.onSurface.copy(alpha = 0.32f)
-            modifier = textModifier
         )
     }
 }
 
+@Composable
+private fun ReplyIcon() {
+    Icon(
+        painter = painterResource(R.drawable.ic_comment),
+        null,
+        modifier = Modifier.size(15.dp),
+        tint = MaterialTheme.colors.onSurface.copy(alpha = 0.32f)
+    )
+}
+
 @Composable
 private fun BoostReaction(
     baseNote: Note,
     accountViewModel: AccountViewModel,
-    textModifier: Modifier = Modifier,
     onQuotePress: () -> Unit
 ) {
     val boostsState by baseNote.live().boosts.observeAsState()
@@ -229,16 +231,14 @@ private fun BoostReaction(
     Text(
         " ${showCount(boostedNote?.boosts?.size)}",
         fontSize = 14.sp,
-        color = MaterialTheme.colors.onSurface.copy(alpha = 0.32f),
+        color = MaterialTheme.colors.onSurface.copy(alpha = 0.32f)
-        modifier = textModifier
     )
 }
 
 @Composable
 fun LikeReaction(
     baseNote: Note,
-    accountViewModel: AccountViewModel,
+    accountViewModel: AccountViewModel
-    textModifier: Modifier = Modifier
 ) {
     val reactionsState by baseNote.live().reactions.observeAsState()
     val reactedNote = reactionsState?.note ?: return
@@ -287,8 +287,7 @@ fun LikeReaction(
     Text(
         " ${showCount(reactedNote.reactions.size)}",
         fontSize = 14.sp,
-        color = MaterialTheme.colors.onSurface.copy(alpha = 0.32f),
+        color = MaterialTheme.colors.onSurface.copy(alpha = 0.32f)
-        modifier = textModifier
     )
 }
 
@@ -457,13 +456,13 @@ fun ZapReaction(
 }
 
 @Composable
-private fun ViewCountReaction(baseNote: Note, textModifier: Modifier = Modifier) {
+private fun ViewCountReaction(idHex: String) {
     val uri = LocalUriHandler.current
     val grayTint = MaterialTheme.colors.onSurface.copy(alpha = 0.32f)
 
     IconButton(
         modifier = Modifier.size(20.dp),
-        onClick = { uri.openUri("https://counter.amethyst.social/${baseNote.idHex}/") }
+        onClick = { uri.openUri("https://counter.amethyst.social/$idHex/") }
     ) {
         Icon(
             imageVector = Icons.Outlined.BarChart,
@@ -473,10 +472,10 @@ private fun ViewCountReaction(baseNote: Note, textModifier: Modifier = Modifier)
         )
     }
 
-    Row(modifier = textModifier) {
+    Row() {
         AsyncImage(
             model = ImageRequest.Builder(LocalContext.current)
-                .data("https://counter.amethyst.social/${baseNote.idHex}.svg?label=+&color=00000000")
+                .data("https://counter.amethyst.social/$idHex.svg?label=+&color=00000000")
                 .diskCachePolicy(CachePolicy.DISABLED)
                 .memoryCachePolicy(CachePolicy.ENABLED)
                 .build(),

app/src/main/java/com/vitorpamplona/amethyst/ui/note/ReplyInformation.kt

@@ -20,11 +20,9 @@ import com.vitorpamplona.amethyst.model.*
 
 @Composable
 fun ReplyInformation(replyTo: List<Note>?, mentions: List<String>, account: Account, navController: NavController) {
-    val sortedMentions = mentions.mapNotNull { LocalCache.checkGetOrCreateUser(it) }
+    val dupMentions = mentions.mapNotNull { LocalCache.checkGetOrCreateUser(it) }
-        .toSet()
-        .sortedBy { account.userProfile().isFollowingCached(it) }
 
-    ReplyInformation(replyTo, sortedMentions, account) {
+    ReplyInformation(replyTo, dupMentions, account) {
         navController.navigate("User/${it.pubkeyHex}")
     }
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/note/ZapUserSetCompose.kt

@@ -43,7 +43,7 @@ fun ZapUserSetCompose(zapSetCard: ZapUserSetCard, isInnerNote: Boolean = false,
 
     var isNew by remember { mutableStateOf<Boolean>(false) }
 
-    LaunchedEffect(key1 = zapSetCard) {
+    LaunchedEffect(key1 = zapSetCard.createdAt()) {
         withContext(Dispatchers.IO) {
             isNew = zapSetCard.createdAt > NotificationCache.load(routeForLastRead)
 

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/CardFeedViewModel.kt

@@ -5,7 +5,6 @@ import androidx.compose.runtime.mutableStateOf
 import androidx.lifecycle.ViewModel
 import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.model.LocalCache
-import com.vitorpamplona.amethyst.model.LocalCacheState
 import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.model.User
 import com.vitorpamplona.amethyst.service.model.BadgeAwardEvent
@@ -15,7 +14,9 @@ import com.vitorpamplona.amethyst.service.model.LnZapEvent
 import com.vitorpamplona.amethyst.service.model.PrivateDmEvent
 import com.vitorpamplona.amethyst.service.model.ReactionEvent
 import com.vitorpamplona.amethyst.service.model.RepostEvent
+import com.vitorpamplona.amethyst.ui.components.BundledInsert
 import com.vitorpamplona.amethyst.ui.components.BundledUpdate
+import com.vitorpamplona.amethyst.ui.dal.AdditiveFeedFilter
 import com.vitorpamplona.amethyst.ui.dal.FeedFilter
 import com.vitorpamplona.amethyst.ui.dal.NotificationFeedFilter
 import kotlinx.coroutines.CoroutineScope
@@ -30,7 +31,7 @@ import kotlin.time.measureTimedValue
 
 class NotificationViewModel : CardFeedViewModel(NotificationFeedFilter)
 
-open class CardFeedViewModel(val dataSource: FeedFilter<Note>) : ViewModel() {
+open class CardFeedViewModel(val localFilter: FeedFilter<Note>) : ViewModel() {
     private val _feedContent = MutableStateFlow<CardFeedState>(CardFeedState.Loading)
     val feedContent = _feedContent.asStateFlow()
 
@@ -46,28 +47,28 @@ open class CardFeedViewModel(val dataSource: FeedFilter<Note>) : ViewModel() {
 
     @Synchronized
     private fun refreshSuspended() {
-        val notes = dataSource.loadTop()
+        val notes = localFilter.loadTop()
 
-        val thisAccount = (dataSource as? NotificationFeedFilter)?.account
+        val thisAccount = (localFilter as? NotificationFeedFilter)?.account
         val lastNotesCopy = if (thisAccount == lastAccount) lastNotes else null
 
-        val oldNotesState = feedContent.value
+        val oldNotesState = _feedContent.value
         if (lastNotesCopy != null && oldNotesState is CardFeedState.Loaded) {
             val newCards = convertToCard(notes.minus(lastNotesCopy))
             if (newCards.isNotEmpty()) {
                 lastNotes = notes
-                lastAccount = (dataSource as? NotificationFeedFilter)?.account
+                lastAccount = (localFilter as? NotificationFeedFilter)?.account
                 updateFeed((oldNotesState.feed.value + newCards).distinctBy { it.id() }.sortedBy { it.createdAt() }.reversed())
             }
         } else {
             val cards = convertToCard(notes)
             lastNotes = notes
-            lastAccount = (dataSource as? NotificationFeedFilter)?.account
+            lastAccount = (localFilter as? NotificationFeedFilter)?.account
             updateFeed(cards)
         }
     }
 
-    private fun convertToCard(notes: List<Note>): List<Card> {
+    private fun convertToCard(notes: Collection<Note>): List<Card> {
         val reactionsPerEvent = mutableMapOf<Note, MutableList<Note>>()
         notes
             .filter { it.event is ReactionEvent }
@@ -159,7 +160,7 @@ open class CardFeedViewModel(val dataSource: FeedFilter<Note>) : ViewModel() {
     private fun updateFeed(notes: List<Card>) {
         val scope = CoroutineScope(Job() + Dispatchers.Main)
         scope.launch {
-            val currentState = feedContent.value
+            val currentState = _feedContent.value
 
             if (notes.isEmpty()) {
                 _feedContent.update { CardFeedState.Empty }
@@ -172,6 +173,28 @@ open class CardFeedViewModel(val dataSource: FeedFilter<Note>) : ViewModel() {
         }
     }
 
+    fun refreshFromOldState(newItems: Set<Note>) {
+        val oldNotesState = _feedContent.value
+
+        val thisAccount = (localFilter as? NotificationFeedFilter)?.account
+        val lastNotesCopy = if (thisAccount == lastAccount) lastNotes else null
+
+        if (lastNotesCopy != null && localFilter is AdditiveFeedFilter && oldNotesState is CardFeedState.Loaded) {
+            val filteredNewList = localFilter.applyFilter(newItems)
+            val actuallyNew = filteredNewList.minus(lastNotesCopy)
+
+            val newCards = convertToCard(actuallyNew)
+            if (newCards.isNotEmpty()) {
+                lastNotes = lastNotesCopy + newItems
+                lastAccount = (localFilter as? NotificationFeedFilter)?.account
+                updateFeed((oldNotesState.feed.value + newCards).distinctBy { it.id() }.sortedBy { it.createdAt() }.reversed())
+            }
+        } else {
+            // Refresh Everything
+            refreshSuspended()
+        }
+    }
+
     @OptIn(ExperimentalTime::class)
     private val bundler = BundledUpdate(250, Dispatchers.IO) {
         // adds the time to perform the refresh into this delay
@@ -181,13 +204,29 @@ open class CardFeedViewModel(val dataSource: FeedFilter<Note>) : ViewModel() {
         }
         Log.d("Time", "${this.javaClass.simpleName} Card update $elapsed")
     }
+    private val bundlerInsert = BundledInsert<Set<Note>>(250, Dispatchers.IO)
 
     fun invalidateData() {
         bundler.invalidate()
     }
 
-    private val cacheListener: (LocalCacheState) -> Unit = {
+    @OptIn(ExperimentalTime::class)
-        invalidateData()
+    fun invalidateInsertData(newItems: Set<Note>) {
+        bundlerInsert.invalidateList(newItems) {
+            val (value, elapsed) = measureTimedValue {
+                refreshFromOldState(it.flatten().toSet())
+            }
+            Log.d("Time", "${this.javaClass.simpleName} Card additive update $elapsed")
+        }
+    }
+
+    private val cacheListener: (Set<Note>) -> Unit = { newNotes ->
+        if (localFilter is AdditiveFeedFilter && _feedContent.value is CardFeedState.Loaded) {
+            invalidateInsertData(newNotes)
+        } else {
+            // Refresh Everything
+            invalidateData()
+        }
     }
 
     init {

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/FeedViewModel.kt

@@ -3,9 +3,10 @@ package com.vitorpamplona.amethyst.ui.screen
 import androidx.compose.runtime.mutableStateOf
 import androidx.lifecycle.ViewModel
 import com.vitorpamplona.amethyst.model.LocalCache
-import com.vitorpamplona.amethyst.model.LocalCacheState
 import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.ui.components.BundledInsert
 import com.vitorpamplona.amethyst.ui.components.BundledUpdate
+import com.vitorpamplona.amethyst.ui.dal.AdditiveFeedFilter
 import com.vitorpamplona.amethyst.ui.dal.BookmarkPrivateFeedFilter
 import com.vitorpamplona.amethyst.ui.dal.BookmarkPublicFeedFilter
 import com.vitorpamplona.amethyst.ui.dal.ChannelFeedFilter
@@ -65,7 +66,7 @@ abstract class FeedViewModel(val localFilter: FeedFilter<Note>) : ViewModel() {
     fun refreshSuspended() {
         val notes = newListFromDataSource()
 
-        val oldNotesState = feedContent.value
+        val oldNotesState = _feedContent.value
         if (oldNotesState is FeedState.Loaded) {
             // Using size as a proxy for has changed.
             if (notes != oldNotesState.feed.value) {
@@ -79,7 +80,7 @@ abstract class FeedViewModel(val localFilter: FeedFilter<Note>) : ViewModel() {
     private fun updateFeed(notes: List<Note>) {
         val scope = CoroutineScope(Job() + Dispatchers.Main)
         scope.launch {
-            val currentState = feedContent.value
+            val currentState = _feedContent.value
             if (notes.isEmpty()) {
                 _feedContent.update { FeedState.Empty }
             } else if (currentState is FeedState.Loaded) {
@@ -91,18 +92,41 @@ abstract class FeedViewModel(val localFilter: FeedFilter<Note>) : ViewModel() {
         }
     }
 
+    fun refreshFromOldState(newItems: Set<Note>) {
+        val oldNotesState = _feedContent.value
+        if (localFilter is AdditiveFeedFilter && oldNotesState is FeedState.Loaded) {
+            val newList = localFilter.updateListWith(oldNotesState.feed.value, newItems.toSet())
+            updateFeed(newList)
+        } else {
+            // Refresh Everything
+            refreshSuspended()
+        }
+    }
+
     private val bundler = BundledUpdate(250, Dispatchers.IO) {
         // adds the time to perform the refresh into this delay
         // holding off new updates in case of heavy refresh routines.
         refreshSuspended()
     }
+    private val bundlerInsert = BundledInsert<Set<Note>>(250, Dispatchers.IO)
 
     fun invalidateData() {
         bundler.invalidate()
     }
 
-    private val cacheListener: (LocalCacheState) -> Unit = {
+    fun invalidateInsertData(newItems: Set<Note>) {
-        invalidateData()
+        bundlerInsert.invalidateList(newItems) {
+            refreshFromOldState(it.flatten().toSet())
+        }
+    }
+
+    private val cacheListener: (Set<Note>) -> Unit = { newNotes ->
+        if (localFilter is AdditiveFeedFilter && _feedContent.value is FeedState.Loaded) {
+            invalidateInsertData(newNotes)
+        } else {
+            // Refresh Everything
+            invalidateData()
+        }
     }
 
     init {

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/LnZapFeedViewModel.kt

@@ -3,7 +3,6 @@ package com.vitorpamplona.amethyst.ui.screen
 import androidx.compose.runtime.mutableStateOf
 import androidx.lifecycle.ViewModel
 import com.vitorpamplona.amethyst.model.LocalCache
-import com.vitorpamplona.amethyst.model.LocalCacheState
 import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.ui.components.BundledUpdate
 import com.vitorpamplona.amethyst.ui.dal.FeedFilter
@@ -32,7 +31,7 @@ open class LnZapFeedViewModel(val dataSource: FeedFilter<Pair<Note, Note>>) : Vi
     private fun refreshSuspended() {
         val notes = dataSource.loadTop()
 
-        val oldNotesState = feedContent.value
+        val oldNotesState = _feedContent.value
         if (oldNotesState is LnZapFeedState.Loaded) {
             // Using size as a proxy for has changed.
             if (notes != oldNotesState.feed.value) {
@@ -46,7 +45,7 @@ open class LnZapFeedViewModel(val dataSource: FeedFilter<Pair<Note, Note>>) : Vi
     private fun updateFeed(notes: List<Pair<Note, Note>>) {
         val scope = CoroutineScope(Job() + Dispatchers.Main)
         scope.launch {
-            val currentState = feedContent.value
+            val currentState = _feedContent.value
             if (notes.isEmpty()) {
                 _feedContent.update { LnZapFeedState.Empty }
             } else if (currentState is LnZapFeedState.Loaded) {
@@ -68,7 +67,7 @@ open class LnZapFeedViewModel(val dataSource: FeedFilter<Pair<Note, Note>>) : Vi
         bundler.invalidate()
     }
 
-    private val cacheListener: (LocalCacheState) -> Unit = {
+    private val cacheListener: (Set<Note>) -> Unit = { newNotes ->
         invalidateData()
     }
 

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/UserFeedViewModel.kt

@@ -3,7 +3,7 @@ package com.vitorpamplona.amethyst.ui.screen
 import androidx.compose.runtime.mutableStateOf
 import androidx.lifecycle.ViewModel
 import com.vitorpamplona.amethyst.model.LocalCache
-import com.vitorpamplona.amethyst.model.LocalCacheState
+import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.model.User
 import com.vitorpamplona.amethyst.ui.components.BundledUpdate
 import com.vitorpamplona.amethyst.ui.dal.FeedFilter
@@ -36,7 +36,7 @@ open class UserFeedViewModel(val dataSource: FeedFilter<User>) : ViewModel() {
     private fun refreshSuspended() {
         val notes = dataSource.loadTop()
 
-        val oldNotesState = feedContent.value
+        val oldNotesState = _feedContent.value
         if (oldNotesState is UserFeedState.Loaded) {
             // Using size as a proxy for has changed.
             if (notes != oldNotesState.feed.value) {
@@ -50,7 +50,7 @@ open class UserFeedViewModel(val dataSource: FeedFilter<User>) : ViewModel() {
     private fun updateFeed(notes: List<User>) {
         val scope = CoroutineScope(Job() + Dispatchers.Main)
         scope.launch {
-            val currentState = feedContent.value
+            val currentState = _feedContent.value
             if (notes.isEmpty()) {
                 _feedContent.update { UserFeedState.Empty }
             } else if (currentState is UserFeedState.Loaded) {
@@ -72,7 +72,7 @@ open class UserFeedViewModel(val dataSource: FeedFilter<User>) : ViewModel() {
         bundler.invalidate()
     }
 
-    private val cacheListener: (LocalCacheState) -> Unit = {
+    private val cacheListener: (Set<Note>) -> Unit = { newNotes ->
         invalidateData()
     }
 

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/BookmarkListScreen.kt

@@ -1,12 +1,14 @@
 package com.vitorpamplona.amethyst.ui.screen.loggedIn
 
+import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.pager.HorizontalPager
+import androidx.compose.foundation.pager.rememberPagerState
 import androidx.compose.material.MaterialTheme
 import androidx.compose.material.Tab
 import androidx.compose.material.TabRow
-import androidx.compose.material.TabRowDefaults
 import androidx.compose.material.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
@@ -18,10 +20,6 @@ import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavController
-import com.google.accompanist.pager.ExperimentalPagerApi
-import com.google.accompanist.pager.HorizontalPager
-import com.google.accompanist.pager.pagerTabIndicatorOffset
-import com.google.accompanist.pager.rememberPagerState
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.ui.dal.BookmarkPrivateFeedFilter
 import com.vitorpamplona.amethyst.ui.dal.BookmarkPublicFeedFilter
@@ -30,7 +28,7 @@ import com.vitorpamplona.amethyst.ui.screen.NostrBookmarkPrivateFeedViewModel
 import com.vitorpamplona.amethyst.ui.screen.NostrBookmarkPublicFeedViewModel
 import kotlinx.coroutines.launch
 
-@OptIn(ExperimentalPagerApi::class)
+@OptIn(ExperimentalFoundationApi::class)
 @Composable
 fun BookmarkListScreen(accountViewModel: AccountViewModel, navController: NavController) {
     val accountState by accountViewModel.accountLiveData.observeAsState()
@@ -57,13 +55,7 @@ fun BookmarkListScreen(accountViewModel: AccountViewModel, navController: NavCon
 
                 TabRow(
                     backgroundColor = MaterialTheme.colors.background,
-                    selectedTabIndex = pagerState.currentPage,
+                    selectedTabIndex = pagerState.currentPage
-                    indicator = { tabPositions ->
-                        TabRowDefaults.Indicator(
-                            Modifier.pagerTabIndicatorOffset(pagerState, tabPositions),
-                            color = MaterialTheme.colors.primary
-                        )
-                    }
                 ) {
                     Tab(
                         selected = pagerState.currentPage == 0,
@@ -80,7 +72,7 @@ fun BookmarkListScreen(accountViewModel: AccountViewModel, navController: NavCon
                         }
                     )
                 }
-                HorizontalPager(count = 2, state = pagerState) {
+                HorizontalPager(pageCount = 2, state = pagerState) {
                     when (pagerState.currentPage) {
                         0 -> FeedView(privateFeedViewModel, accountViewModel, navController, null)
                         1 -> FeedView(publicFeedViewModel, accountViewModel, navController, null)

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/ChannelScreen.kt

@@ -89,6 +89,8 @@ fun ChannelScreen(
     val context = LocalContext.current
     val channelScreenModel: NewPostViewModel = viewModel()
 
+    channelScreenModel.account = account
+
     if (account != null && channelId != null) {
         val replyTo = remember { mutableStateOf<Note?>(null) }
 

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/ChatroomListScreen.kt

@@ -1,5 +1,6 @@
 package com.vitorpamplona.amethyst.ui.screen.loggedIn
 
+import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.fillMaxHeight
@@ -7,6 +8,8 @@ import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.pager.HorizontalPager
+import androidx.compose.foundation.pager.rememberPagerState
 import androidx.compose.material.DropdownMenu
 import androidx.compose.material.DropdownMenuItem
 import androidx.compose.material.Icon
@@ -14,7 +17,6 @@ import androidx.compose.material.IconButton
 import androidx.compose.material.MaterialTheme
 import androidx.compose.material.Tab
 import androidx.compose.material.TabRow
-import androidx.compose.material.TabRowDefaults
 import androidx.compose.material.Text
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.MoreVert
@@ -37,10 +39,6 @@ import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.LifecycleEventObserver
 import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavController
-import com.google.accompanist.pager.ExperimentalPagerApi
-import com.google.accompanist.pager.HorizontalPager
-import com.google.accompanist.pager.pagerTabIndicatorOffset
-import com.google.accompanist.pager.rememberPagerState
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.service.NostrChatroomListDataSource
 import com.vitorpamplona.amethyst.ui.dal.ChatroomListKnownFeedFilter
@@ -50,7 +48,7 @@ import com.vitorpamplona.amethyst.ui.screen.NostrChatroomListKnownFeedViewModel
 import com.vitorpamplona.amethyst.ui.screen.NostrChatroomListNewFeedViewModel
 import kotlinx.coroutines.launch
 
-@OptIn(ExperimentalPagerApi::class)
+@OptIn(ExperimentalFoundationApi::class)
 @Composable
 fun ChatroomListScreen(accountViewModel: AccountViewModel, navController: NavController) {
     val pagerState = rememberPagerState()
@@ -68,13 +66,7 @@ fun ChatroomListScreen(accountViewModel: AccountViewModel, navController: NavCon
                 Box(Modifier.fillMaxWidth()) {
                     TabRow(
                         backgroundColor = MaterialTheme.colors.background,
-                        selectedTabIndex = pagerState.currentPage,
+                        selectedTabIndex = pagerState.currentPage
-                        indicator = { tabPositions ->
-                            TabRowDefaults.Indicator(
-                                Modifier.pagerTabIndicatorOffset(pagerState, tabPositions),
-                                color = MaterialTheme.colors.primary
-                            )
-                        }
                     ) {
                         Tab(
                             selected = pagerState.currentPage == 0,
@@ -115,7 +107,7 @@ fun ChatroomListScreen(accountViewModel: AccountViewModel, navController: NavCon
                     }
                 }
 
-                HorizontalPager(count = 2, state = pagerState) {
+                HorizontalPager(pageCount = 2, state = pagerState) {
                     when (pagerState.currentPage) {
                         0 -> TabKnown(accountViewModel, navController, markKnownAsRead)
                         1 -> TabNew(accountViewModel, navController, markNewAsRead)

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/ChatroomScreen.kt

@@ -67,6 +67,8 @@ fun ChatroomScreen(userId: String?, accountViewModel: AccountViewModel, navContr
     val context = LocalContext.current
     val chatRoomScreenModel: NewPostViewModel = viewModel()
 
+    chatRoomScreenModel.account = account
+
     if (account != null && userId != null) {
         val replyTo = remember { mutableStateOf<Note?>(null) }
 

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/HiddenUsersScreen.kt

@@ -1,12 +1,14 @@
 package com.vitorpamplona.amethyst.ui.screen.loggedIn
 
+import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.pager.HorizontalPager
+import androidx.compose.foundation.pager.rememberPagerState
 import androidx.compose.material.MaterialTheme
 import androidx.compose.material.Tab
 import androidx.compose.material.TabRow
-import androidx.compose.material.TabRowDefaults
 import androidx.compose.material.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
@@ -17,17 +19,13 @@ import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavController
-import com.google.accompanist.pager.ExperimentalPagerApi
-import com.google.accompanist.pager.HorizontalPager
-import com.google.accompanist.pager.pagerTabIndicatorOffset
-import com.google.accompanist.pager.rememberPagerState
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.ui.dal.HiddenAccountsFeedFilter
 import com.vitorpamplona.amethyst.ui.screen.NostrHiddenAccountsFeedViewModel
 import com.vitorpamplona.amethyst.ui.screen.UserFeedView
 import kotlinx.coroutines.launch
 
-@OptIn(ExperimentalPagerApi::class)
+@OptIn(ExperimentalFoundationApi::class)
 @Composable
 fun HiddenUsersScreen(accountViewModel: AccountViewModel, navController: NavController) {
     val accountState by accountViewModel.accountLiveData.observeAsState()
@@ -45,13 +43,7 @@ fun HiddenUsersScreen(accountViewModel: AccountViewModel, navController: NavCont
 
                 TabRow(
                     backgroundColor = MaterialTheme.colors.background,
-                    selectedTabIndex = pagerState.currentPage,
+                    selectedTabIndex = pagerState.currentPage
-                    indicator = { tabPositions ->
-                        TabRowDefaults.Indicator(
-                            Modifier.pagerTabIndicatorOffset(pagerState, tabPositions),
-                            color = MaterialTheme.colors.primary
-                        )
-                    }
                 ) {
                     Tab(
                         selected = pagerState.currentPage == 0,
@@ -61,7 +53,7 @@ fun HiddenUsersScreen(accountViewModel: AccountViewModel, navController: NavCont
                         }
                     )
                 }
-                HorizontalPager(count = 1, state = pagerState) {
+                HorizontalPager(pageCount = 1, state = pagerState) {
                     when (pagerState.currentPage) {
                         0 -> UserFeedView(feedViewModel, accountViewModel, navController)
                     }

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/HomeScreen.kt

@@ -1,12 +1,14 @@
 package com.vitorpamplona.amethyst.ui.screen.loggedIn
 
+import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.pager.HorizontalPager
+import androidx.compose.foundation.pager.PagerState
 import androidx.compose.material.MaterialTheme
 import androidx.compose.material.Tab
 import androidx.compose.material.TabRow
-import androidx.compose.material.TabRowDefaults
 import androidx.compose.material.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.DisposableEffect
@@ -23,10 +25,6 @@ import androidx.compose.ui.unit.dp
 import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.LifecycleEventObserver
 import androidx.navigation.NavController
-import com.google.accompanist.pager.ExperimentalPagerApi
-import com.google.accompanist.pager.HorizontalPager
-import com.google.accompanist.pager.PagerState
-import com.google.accompanist.pager.pagerTabIndicatorOffset
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.service.NostrHomeDataSource
 import com.vitorpamplona.amethyst.ui.dal.HomeConversationsFeedFilter
@@ -39,7 +37,7 @@ import com.vitorpamplona.amethyst.ui.screen.NostrHomeRepliesFeedViewModel
 import com.vitorpamplona.amethyst.ui.screen.ScrollStateKeys
 import kotlinx.coroutines.launch
 
-@OptIn(ExperimentalPagerApi::class)
+@OptIn(ExperimentalFoundationApi::class)
 @Composable
 fun HomeScreen(
     homeFeedViewModel: NostrHomeFeedViewModel,
@@ -90,13 +88,7 @@ fun HomeScreen(
         ) {
             TabRow(
                 backgroundColor = MaterialTheme.colors.background,
-                selectedTabIndex = pagerState.currentPage,
+                selectedTabIndex = pagerState.currentPage
-                indicator = { tabPositions ->
-                    TabRowDefaults.Indicator(
-                        Modifier.pagerTabIndicatorOffset(pagerState, tabPositions),
-                        color = MaterialTheme.colors.primary
-                    )
-                }
             ) {
                 Tab(
                     selected = pagerState.currentPage == 0,
@@ -114,7 +106,7 @@ fun HomeScreen(
                     }
                 )
             }
-            HorizontalPager(count = 2, state = pagerState) {
+            HorizontalPager(pageCount = 2, state = pagerState) {
                 when (pagerState.currentPage) {
                     0 -> FeedView(homeFeedViewModel, accountViewModel, navController, Route.Home.base + "Follows", ScrollStateKeys.HOME_FOLLOWS, scrollToTop)
                     1 -> FeedView(repliesFeedViewModel, accountViewModel, navController, Route.Home.base + "FollowsReplies", ScrollStateKeys.HOME_REPLIES, scrollToTop)

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/MainScreen.kt

@@ -1,5 +1,6 @@
 package com.vitorpamplona.amethyst.ui.screen.loggedIn
 
+import androidx.activity.compose.BackHandler
 import androidx.compose.animation.Crossfade
 import androidx.compose.animation.core.tween
 import androidx.compose.foundation.background
@@ -19,6 +20,7 @@ import androidx.compose.material.rememberScaffoldState
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.ui.Modifier
 import androidx.navigation.NavHostController
 import androidx.navigation.compose.rememberNavController
@@ -34,10 +36,12 @@ import com.vitorpamplona.amethyst.ui.navigation.Route
 import com.vitorpamplona.amethyst.ui.navigation.currentRoute
 import com.vitorpamplona.amethyst.ui.screen.AccountState
 import com.vitorpamplona.amethyst.ui.screen.AccountStateViewModel
+import kotlinx.coroutines.launch
 
 @OptIn(ExperimentalMaterialApi::class)
 @Composable
 fun MainScreen(accountViewModel: AccountViewModel, accountStateViewModel: AccountStateViewModel, startingPage: String? = null) {
+    val coroutineScope = rememberCoroutineScope()
     val navController = rememberNavController()
     val scaffoldState = rememberScaffoldState(rememberDrawerState(DrawerValue.Closed))
     val sheetState = rememberModalBottomSheetState(
@@ -64,6 +68,9 @@ fun MainScreen(accountViewModel: AccountViewModel, accountStateViewModel: Accoun
             },
             drawerContent = {
                 DrawerContent(navController, scaffoldState, sheetState, accountViewModel)
+                BackHandler(enabled = scaffoldState.drawerState.isOpen) {
+                    coroutineScope.launch { scaffoldState.drawerState.close() }
+                }
             },
             floatingActionButton = {
                 FloatingButtons(navController, accountStateViewModel)

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/ProfileScreen.kt

@@ -5,6 +5,8 @@ import android.net.Uri
 import androidx.compose.foundation.*
 import androidx.compose.foundation.gestures.scrollBy
 import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.pager.HorizontalPager
+import androidx.compose.foundation.pager.rememberPagerState
 import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.foundation.text.ClickableText
@@ -48,10 +50,6 @@ import androidx.lifecycle.LifecycleEventObserver
 import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavController
 import coil.compose.AsyncImage
-import com.google.accompanist.pager.ExperimentalPagerApi
-import com.google.accompanist.pager.HorizontalPager
-import com.google.accompanist.pager.pagerTabIndicatorOffset
-import com.google.accompanist.pager.rememberPagerState
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.model.LocalCache
@@ -70,6 +68,7 @@ import com.vitorpamplona.amethyst.ui.components.RobohashAsyncImage
 import com.vitorpamplona.amethyst.ui.components.RobohashFallbackAsyncImage
 import com.vitorpamplona.amethyst.ui.components.TranslatableRichTextViewer
 import com.vitorpamplona.amethyst.ui.components.ZoomableImageDialog
+import com.vitorpamplona.amethyst.ui.components.figureOutMimeType
 import com.vitorpamplona.amethyst.ui.dal.UserProfileBookmarksFeedFilter
 import com.vitorpamplona.amethyst.ui.dal.UserProfileConversationsFeedFilter
 import com.vitorpamplona.amethyst.ui.dal.UserProfileFollowersFeedFilter
@@ -98,7 +97,7 @@ import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import java.math.BigDecimal
 
-@OptIn(ExperimentalPagerApi::class)
+@OptIn(ExperimentalFoundationApi::class)
 @Composable
 fun ProfileScreen(userId: String?, accountViewModel: AccountViewModel, navController: NavController) {
     val accountState by accountViewModel.accountLiveData.observeAsState()
@@ -187,12 +186,6 @@ fun ProfileScreen(userId: String?, accountViewModel: AccountViewModel, navContro
                     ScrollableTabRow(
                         backgroundColor = MaterialTheme.colors.background,
                         selectedTabIndex = pagerState.currentPage,
-                        indicator = { tabPositions ->
-                            TabRowDefaults.Indicator(
-                                Modifier.pagerTabIndicatorOffset(pagerState, tabPositions),
-                                color = MaterialTheme.colors.primary
-                            )
-                        },
                         edgePadding = 8.dp,
                         modifier = Modifier.onSizeChanged {
                             tabsSize = it
@@ -268,7 +261,7 @@ fun ProfileScreen(userId: String?, accountViewModel: AccountViewModel, navContro
                         }
                     }
                     HorizontalPager(
-                        count = 8,
+                        pageCount = 8,
                         state = pagerState,
                         modifier = with(LocalDensity.current) {
                             Modifier.height((columnSize.height - tabsSize.height).toDp())
@@ -409,8 +402,9 @@ private fun ProfileHeader(
         }
     }
 
-    if (zoomImageDialogOpen) {
+    val profilePic = baseUser.profilePicture()
-        ZoomableImageDialog(baseUser.profilePicture()!!, onDismiss = { zoomImageDialogOpen = false })
+    if (zoomImageDialogOpen && profilePic != null) {
+        ZoomableImageDialog(figureOutMimeType(profilePic), onDismiss = { zoomImageDialogOpen = false })
     }
 }
 
@@ -498,7 +492,7 @@ private fun DrawAdditionalInfo(baseUser: User, account: Account, accountViewMode
 
     userBadge.acceptedBadges?.let { note ->
         (note.event as? BadgeProfilesEvent)?.let { event ->
-            FlowRow(verticalAlignment = Alignment.CenterVertically, modifier = Modifier.padding(vertical = 5.dp)) {
+            FlowRow(verticalArrangement = Arrangement.Center, modifier = Modifier.padding(vertical = 5.dp)) {
                 event.badgeAwardEvents().forEach { badgeAwardEvent ->
                     val baseNote = LocalCache.notes[badgeAwardEvent]
                     if (baseNote != null) {
@@ -655,6 +649,7 @@ fun BadgeThumb(
         if (image == null) {
             RobohashAsyncImage(
                 robot = "authornotfound",
+                robotSize = size,
                 contentDescription = stringResource(R.string.unknown_author),
                 modifier = pictureModifier
                     .width(size)
@@ -664,6 +659,7 @@ fun BadgeThumb(
         } else {
             RobohashFallbackAsyncImage(
                 robot = note.idHex,
+                robotSize = size,
                 model = image,
                 contentDescription = stringResource(id = R.string.profile_image),
                 modifier = pictureModifier
@@ -712,7 +708,7 @@ private fun DrawBanner(baseUser: User) {
         )
 
         if (zoomImageDialogOpen) {
-            ZoomableImageDialog(imageUrl = banner, onDismiss = { zoomImageDialogOpen = false })
+            ZoomableImageDialog(imageUrl = figureOutMimeType(banner), onDismiss = { zoomImageDialogOpen = false })
         }
     } else {
         Image(

app/src/main/res/values-hu/strings.xml

@@ -263,9 +263,30 @@
     <string name="wallet_connect_service_secret_placeholder">nsec / hex privát kulcs</string>
 
     <string name="pledge_amount_in_sats">Hozzájárulás összege sats-ban</string>
+    <string name="post_poll">Szavazás Létrehozása</string>
+    <string name="poll_heading_required">Szükséges mezők:</string>
+    <string name="poll_zap_recipients">Zap-et kapják</string>
+    <string name="poll_primary_description">Szavazás elsődleges leírása…</string>
+    <string name="poll_option_index">Szavazás %s megoszlása</string>
+    <string name="poll_option_description">Szavazás opcióinak leírása</string>
+    <string name="poll_heading_optional">Kiegészítő mezők:</string>
+    <string name="poll_zap_value_min">Zap minimum</string>
+    <string name="poll_zap_value_max">Zap maximum</string>
+    <string name="poll_consensus_threshold">Konszenzus</string>
+    <string name="poll_consensus_threshold_percent">(0–100)%</string>
+    <string name="poll_closing_time">Szavazás lezárása</string>
+    <string name="poll_closing_time_days">napok</string>
+    <string name="poll_is_closed">A szavazásra nem lehet már új szavazatot leadni</string>
+    <string name="poll_zap_amount">Zap összege</string>
+    <string name="one_vote_per_user_on_atomic_votes">Az ilyen típusú szavazásokon felhasználónként csak egy szavazat engedélyezett</string>
+
 
     <string name="looking_for_event">"%1$s esemény keresése"</string>
 
     <string name="custom_zaps_add_a_message">Nyilvános üzenet hozzáadása</string>
     <string name="custom_zaps_add_a_message_example">Köszönöm a kemény munkát!</string>
+
+    <string name="lightning_create_and_add_invoice">Létrehoz és Hozzáad</string>
+    <string name="poll_author_no_vote">A szavazás létrehozója sajátjára nem szavazhat.</string>
+    <string name="poll_hashtag" translatable="false">#zappoll</string>
 </resources>

app/src/main/res/values-nl/strings.xml

@@ -226,4 +226,63 @@
     <string name="account_switch_has_private_key">Heeft privésleutel</string>
     <string name="account_switch_pubkey_only">Alleen lezen, geen privésleutel</string>
     <string name="back">Terug</string>
+    <string name="report_dialog_spam">Spam of oplichting</string>
+    <string name="report_dialog_profanity">Godslastering of haatdragend gedrag</string>
+    <string name="report_dialog_impersonation">Kwaadwillige imitatie</string>
+    <string name="report_dialog_nudity">Naaktheid of grafische inhoud</string>
+    <string name="report_dialog_illegal">Illegaal gedrag</string>
+    <string name="report_dialog_blocking_a_user">Als u een gebruiker blokkeert, wordt zijn inhoud in uw app verborgen. Uw notes zijn nog steeds publiekelijk zichtbaar, ook voor mensen die u blokkeert. Geblokkeerde gebruikers worden vermeld in het scherm Beveiligingsfilters.</string>
+    <string name="report_dialog_block_hide_user_btn"><![CDATA[Blokkeer & verberg gebruiker]]></string>
+    <string name="report_dialog_report_btn">Misbruik melden</string>
+    <string name="report_dialog_reminder_public">Alle geplaatste rapporteringen zijn openbaar.</string>
+    <string name="report_dialog_additional_reason_placeholder">Geef optioneel extra context over uw rapportering...</string>
+    <string name="report_dialog_additional_reason_label">Extra context</string>
+    <string name="report_dialog_select_reason_label">Reden</string>
+    <string name="report_dialog_select_reason_placeholder">Selecteer een reden…</string>
+    <string name="report_dialog_post_report_btn">Rapporteer</string>
+    <string name="report_dialog_title">Blokkeer en rapporteer</string>
+    <string name="block_only">Blokkeren</string>
+
+    <string name="bookmarks">Bladwijzers</string>
+    <string name="private_bookmarks">Privé bladwijzers</string>
+    <string name="public_bookmarks">PPublieke Bladwijzers</string>
+    <string name="add_to_private_bookmarks">Toevoegen aan privé bladwijzers</string>
+    <string name="add_to_public_bookmarks">Toevoegen aan publieke bladwijzers</string>
+    <string name="remove_from_private_bookmarks">Verwijderen uit privé bladwijzers</string>
+    <string name="remove_from_public_bookmarks">Verwijderen uit publieke bladwijzers</string>
+
+    <string name="wallet_connect_service">Wallet Connect Service</string>
+    <string name="wallet_connect_service_explainer">Machtigt een Nostr Secret om zaps te betalen zonder de app te verlaten. Houd het geheim veilig en gebruik indien mogelijk een privé relays.</string>
+    <string name="wallet_connect_service_pubkey">Wallet Connect publieke sleutel</string>
+    <string name="wallet_connect_service_relay">Wallet Connect Relay</string>
+    <string name="wallet_connect_service_secret">Wallet Connect Secret</string>
+    <string name="wallet_connect_service_show_secret">Toon secret sleutel</string>
+    <string name="wallet_connect_service_secret_placeholder">nsec / hex privésleutel</string>
+
+    <string name="pledge_amount_in_sats">Bedrag in sats</string>
+    <string name="post_poll">Verzend poll</string>
+    <string name="poll_heading_required">Verplichte velden:</string>
+    <string name="poll_zap_recipients">Zap ontvangers</string>
+    <string name="poll_primary_description">Primaire poll beschrijving…</string>
+    <string name="poll_option_index">Optie %s</string>
+    <string name="poll_option_description">Poll optie beschrijvingen</string>
+    <string name="poll_heading_optional">Optionele velden:</string>
+    <string name="poll_zap_value_min">Zap minimum</string>
+    <string name="poll_zap_value_max">Zap maximum</string>
+    <string name="poll_consensus_threshold">Consensus</string>
+    <string name="poll_consensus_threshold_percent">(0–100)%</string>
+    <string name="poll_closing_time">Sluit na</string>
+    <string name="poll_closing_time_days">dagen</string>
+    <string name="poll_is_closed">Poll is gesloten voor nieuwe stemmen</string>
+    <string name="poll_zap_amount">Zap bedrag</string>
+    <string name="one_vote_per_user_on_atomic_votes">Slechts één stem per gebruiker is toegestaan bij dit type peiling.</string>
+
+    <string name="looking_for_event">"Zoeken naar event %1$s"</string>
+
+    <string name="custom_zaps_add_a_message">Een openbaar bericht toevoegen</string>
+    <string name="custom_zaps_add_a_message_example">Bedankt voor al jullie werk!</string>
+
+    <string name="lightning_create_and_add_invoice">Maken en toevoegen</string>
+    <string name="poll_author_no_vote">Poll auteurs kunnen niet stemmen in hun eigen poll.</string>
+    <string name="poll_hashtag" translatable="false">#zappoll</string>
 </resources>

app/src/main/res/values/strings.xml

@@ -292,4 +292,9 @@
     <string name="lightning_create_and_add_invoice">Create and Add</string>
     <string name="poll_author_no_vote">Poll authors can\'t vote in their own polls.</string>
     <string name="poll_hashtag" translatable="false">#zappoll</string>
+
+
+    <string name="hash_verification_passed">Image is the same since the post</string>
+    <string name="hash_verification_failed">Image has changed. The author might not have seen the change</string>
+
 </resources>

build.gradle

@@ -2,7 +2,7 @@ buildscript {
     ext {
         fragment_version = "1.5.6"
         lifecycle_version = '2.6.1'
-        compose_ui_version = '1.5.0-alpha01'
+        compose_ui_version = '1.5.0-alpha02'
         nav_version = "2.5.3"
         room_version = "2.4.3"
         accompanist_version = '0.30.0'
@@ -10,8 +10,8 @@ buildscript {
     }
 }// Top-level build file where you can add configuration options common to all sub-projects/modules.
 plugins {
-    id 'com.android.application' version '7.4.2' apply false
+    id 'com.android.application' version '8.0.0' apply false
-    id 'com.android.library' version '7.4.2' apply false
+    id 'com.android.library' version '8.0.0' apply false
     id 'org.jetbrains.kotlin.android' version '1.8.10' apply false
     id 'org.jetbrains.kotlin.jvm' version '1.8.10' apply false
 }

gradle.properties

@@ -21,4 +21,6 @@ kotlin.code.style=official
 # resources declared in the library itself and none from the library's dependencies,
 # thereby reducing the size of the R class for that library
 android.nonTransitiveRClass=true
-android.enableR8.fullMode=true
+android.enableR8.fullMode=true
+android.defaults.buildfeatures.buildconfig=true
+android.nonFinalResIds=false

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 #Wed Jan 04 09:23:50 EST 2023
 distributionBase=GRADLE_USER_HOME
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-bin.zip
 distributionPath=wrapper/dists
 zipStorePath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME