Finalizes the RelaySync utility

amethyst/src/androidTest/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/relays/eventsync/EventSyncTest.kt

@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst.ui.screen.loggedIn.relays.eventsync
+
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import com.vitorpamplona.amethyst.model.Constants
+import com.vitorpamplona.amethyst.service.okhttp.DefaultContentTypeInterceptor
+import com.vitorpamplona.quartz.nip01Core.relay.client.NostrClient
+import com.vitorpamplona.quartz.nip01Core.relay.normalizer.normalizeRelayUrl
+import com.vitorpamplona.quartz.nip01Core.relay.sockets.okhttp.BasicOkHttpWebSocket
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.runBlocking
+import okhttp3.OkHttpClient
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@RunWith(AndroidJUnit4::class)
+class EventSyncTest {
+    companion object {
+        val vitor = "wss://vitor.nostr1.com".normalizeRelayUrl()
+        val appScope = CoroutineScope(Dispatchers.Default + SupervisorJob())
+
+        val rootClient =
+            OkHttpClient
+                .Builder()
+                .followRedirects(true)
+                .followSslRedirects(true)
+                .addInterceptor(DefaultContentTypeInterceptor("Amethyst/v1.05"))
+                .build()
+        val socketBuilder = BasicOkHttpWebSocket.Builder { url -> rootClient }
+    }
+
+    @Test
+    fun testSync() =
+        runBlocking {
+            val sync =
+                EventSync(
+                    accountPubKey = "460c25e682fda7832b52d1f22d3d22b3176d972f60dcdc3212ed8c92ef85065c",
+                    relayDb = {
+                        listOf(Constants.mom, Constants.nos)
+                    },
+                    outboxTargets = { setOf(vitor) },
+                    inboxTargets = { setOf(vitor) },
+                    dmTargets = { setOf(vitor) },
+                    clientBuilder = {
+                        NostrClient(socketBuilder, appScope)
+                    },
+                    scope = appScope,
+                )
+
+            sync.runSync()
+        }
+}

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

@@ -35,6 +35,7 @@ import coil3.asDrawable
 import coil3.imageLoader
 import coil3.request.ImageRequest
 import com.vitorpamplona.amethyst.AccountInfo
+import com.vitorpamplona.amethyst.Amethyst
 import com.vitorpamplona.amethyst.LocalPreferences
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.commons.compose.GenericBaseCache
@@ -94,8 +95,10 @@ import com.vitorpamplona.quartz.nip01Core.core.toHexKey
 import com.vitorpamplona.quartz.nip01Core.crypto.KeyPair
 import com.vitorpamplona.quartz.nip01Core.hints.EventHintBundle
 import com.vitorpamplona.quartz.nip01Core.relay.client.EmptyNostrClient
+import com.vitorpamplona.quartz.nip01Core.relay.client.NostrClient
 import com.vitorpamplona.quartz.nip01Core.relay.client.accessories.RelayOfflineTracker
 import com.vitorpamplona.quartz.nip01Core.relay.client.auth.EmptyIAuthStatus
+import com.vitorpamplona.quartz.nip01Core.relay.client.auth.RelayAuthenticator
 import com.vitorpamplona.quartz.nip01Core.relay.normalizer.NormalizedRelayUrl
 import com.vitorpamplona.quartz.nip01Core.signers.NostrSignerInternal
 import com.vitorpamplona.quartz.nip01Core.signers.SignerExceptions
@@ -145,8 +148,10 @@ import kotlinx.collections.immutable.persistentSetOf
 import kotlinx.collections.immutable.toImmutableList
 import kotlinx.collections.immutable.toImmutableSet
 import kotlinx.coroutines.CancellationException
+import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.SupervisorJob
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
@@ -175,7 +180,66 @@ class AccountViewModel(
     val toastManager = ToastManager()
     val broadcastTracker = BroadcastTracker()
     val feedStates = AccountFeedContentStates(account, viewModelScope)
-    val eventSync = EventSync(account, viewModelScope)
+
+    val eventSync =
+        EventSync(
+            accountPubKey = account.signer.pubKey,
+            relayDb = {
+                val stats = Amethyst.instance.relayStats.snapshot()
+
+                val relays =
+                    account.cache.relayHints.relayDB
+                        .keys()
+                        .filter { url ->
+                            val relayStat = stats[url]
+                            // has connected at least once OR never tried.
+                            if (relayStat != null) {
+                                relayStat.connectionCompleted > 0 || relayStat.connectionTentatives == 0
+                            } else {
+                                true
+                            }
+                        }
+
+                val sortMap = relays.associateWith { stats.get(it)?.receivedBytes }
+
+                relays.sortedByDescending { sortMap[it] }
+            },
+            outboxTargets = { account.nip65RelayList.outboxFlow.value },
+            inboxTargets = { account.nip65RelayList.inboxFlow.value },
+            dmTargets = { account.dmRelayList.flow.value },
+            clientBuilder = {
+                // creates a new client to make sure these events don't end up polluting the local cache.
+
+                // Create a new scope that inherits the ViewModel's lifecycle
+                // but uses a SupervisorJob so child failures are independent.
+                val customScope = CoroutineScope(viewModelScope.coroutineContext + SupervisorJob())
+
+                // Provides a relay pool
+                val newClient = NostrClient(Amethyst.instance.websocketBuilder, customScope)
+
+                // Authenticates with relays.
+                val auth =
+                    RelayAuthenticator(
+                        newClient,
+                        customScope,
+                        signWithAllLoggedInUsers = { authTemplate ->
+                            if (account.signer.isWriteable()) {
+                                try {
+                                    listOf(account.signer.sign(authTemplate))
+                                } catch (e: Exception) {
+                                    Log.e("AuthCoordinator", "Failed trying to authenticate a writeable account", e)
+                                    emptyList()
+                                }
+                            } else {
+                                emptyList()
+                            }
+                        },
+                    )
+
+                newClient
+            },
+            scope = viewModelScope,
+        )
 
     val tempManualPaymentCache = LruCache<String, List<ZapPaymentHandler.Payable>>(5)
 

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/relays/eventsync/EventSync.kt

@@ -20,17 +20,23 @@
  */
 package com.vitorpamplona.amethyst.ui.screen.loggedIn.relays.eventsync
 
-import com.vitorpamplona.amethyst.model.Account
+import androidx.compose.runtime.Stable
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.relays.eventsync.EventSync.Companion.MAX_ACTIVITY_LOG
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.relays.eventsync.EventSync.Companion.MAX_CONCURRENT_RELAYS
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.relays.eventsync.EventSync.LiveSyncActivity.SourceRelayInfo
 import com.vitorpamplona.quartz.nip01Core.core.Event
 import com.vitorpamplona.quartz.nip01Core.core.HexKey
+import com.vitorpamplona.quartz.nip01Core.relay.client.INostrClient
 import com.vitorpamplona.quartz.nip01Core.relay.client.accessories.reqBypassingRelayLimits
 import com.vitorpamplona.quartz.nip01Core.relay.client.listeners.IRelayClientListener
 import com.vitorpamplona.quartz.nip01Core.relay.client.single.IRelayClient
 import com.vitorpamplona.quartz.nip01Core.relay.commands.toClient.Message
 import com.vitorpamplona.quartz.nip01Core.relay.commands.toClient.OkMessage
+import com.vitorpamplona.quartz.nip01Core.relay.commands.toRelay.Command
+import com.vitorpamplona.quartz.nip01Core.relay.commands.toRelay.EventCmd
+import com.vitorpamplona.quartz.nip01Core.relay.commands.toRelay.ReqCmd
 import com.vitorpamplona.quartz.nip01Core.relay.filters.Filter
 import com.vitorpamplona.quartz.nip01Core.relay.normalizer.NormalizedRelayUrl
-import com.vitorpamplona.quartz.nip01Core.relay.normalizer.normalizeRelayUrl
 import com.vitorpamplona.quartz.nip01Core.tags.people.isTaggedUser
 import kotlinx.coroutines.CancellationException
 import kotlinx.coroutines.CoroutineScope
@@ -38,6 +44,7 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.isActive
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.supervisorScope
@@ -65,18 +72,21 @@ import java.util.concurrent.atomic.AtomicLong
  * Live activity is emitted via [liveActivity] so the UI can show a per-relay log of events
  * received and events accepted by destination relays.
  *
- * The sync is pausable: calling [cancel] transitions to [SyncState.Paused] so the user can
- * [resume] from the last completed relay index rather than starting over.
- *
  * Scoped to the AccountViewModel so the sync survives navigation within the same session.
  */
+@Stable
 class EventSync(
-    val account: Account,
+    private val accountPubKey: HexKey,
+    private val relayDb: () -> List<NormalizedRelayUrl>,
+    private val outboxTargets: () -> Set<NormalizedRelayUrl>,
+    private val inboxTargets: () -> Set<NormalizedRelayUrl>,
+    private val dmTargets: () -> Set<NormalizedRelayUrl>,
+    private val clientBuilder: () -> INostrClient,
     private val scope: CoroutineScope,
 ) {
     companion object {
         /** Maximum number of relays queried at the same time. */
-        const val MAX_CONCURRENT_RELAYS = 50
+        const val MAX_CONCURRENT_RELAYS = 10
 
         /** How long (ms) to wait for a single relay to reply per page before giving up. */
         const val RELAY_TIMEOUT_MS = 30_000L
@@ -98,13 +108,6 @@ class EventSync(
             val eventsSent: Int,
         ) : SyncState()
 
-        /** Cancelled mid-run; can be resumed from [nextRelayIndex]. */
-        data class Paused(
-            val nextRelayIndex: Int,
-            val totalRelays: Int,
-            val eventsSent: Int,
-        ) : SyncState()
-
         data class Done(
             val totalEventsSent: Int,
             val totalEventsAccepted: Int,
@@ -119,39 +122,83 @@ class EventSync(
     /**
      * Per-relay activity snapshot emitted continuously while the sync runs.
      *
-     * @param recentCompletions  Last [MAX_ACTIVITY_LOG] relays that finished, newest first.
+     * @param completedRelays  Last [MAX_ACTIVITY_LOG] relays that finished, sorted by most events
+     *                         found (descending) so the most productive sources appear first.
      * @param outboxTargets  Relays receiving events authored by the user.
      * @param inboxTargets  Relays receiving events that mention the user.
      * @param dmTargets  Relays receiving DMs addressed to the user.
      */
+    @Stable
     data class LiveSyncActivity(
-        val recentCompletions: List<CompletedRelayInfo> = emptyList(),
+        val runningRelays: Map<NormalizedRelayUrl, SourceRelayInfo> = emptyMap(),
-        val outboxTargets: List<DestinationRelayInfo> = emptyList(),
+        val completedRelays: Map<NormalizedRelayUrl, SourceRelayInfo> = emptyMap(),
-        val inboxTargets: List<DestinationRelayInfo> = emptyList(),
+        val outboxTargets: Map<NormalizedRelayUrl, DestinationRelayInfo> = emptyMap(),
-        val dmTargets: List<DestinationRelayInfo> = emptyList(),
+        val inboxTargets: Map<NormalizedRelayUrl, DestinationRelayInfo> = emptyMap(),
+        val dmTargets: Map<NormalizedRelayUrl, DestinationRelayInfo> = emptyMap(),
     ) {
+        companion object {
+            val DefaultOrder = compareByDescending<SourceRelayInfo> { it.eventsFound.value }.thenByDescending { it.status.value == ConnectionStatus.Completed }
+        }
+
+        val sortedCompletedRelays = completedRelays.values.sortedWith(DefaultOrder)
+
+        constructor(
+            runningRelays: List<SourceRelayInfo>,
+            completedRelays: List<SourceRelayInfo>,
+            outboxTargets: List<DestinationRelayInfo>,
+            inboxTargets: List<DestinationRelayInfo>,
+            dmTargets: List<DestinationRelayInfo>,
+        ) : this(
+            runningRelays.associateBy { it.relay },
+            completedRelays.associateBy { it.relay },
+            outboxTargets.associateBy { it.relay },
+            inboxTargets.associateBy { it.relay },
+            dmTargets.associateBy { it.relay },
+        )
+
+        sealed interface ConnectionStatus {
+            object Connecting : ConnectionStatus
+
+            object Querying : ConnectionStatus
+
+            class Error(
+                val msg: String,
+            ) : ConnectionStatus
+
+            object Completed : ConnectionStatus
+        }
+
         /**
          * @param eventsFound  Total events received from this relay across all pages.
          * @param eventsAccepted  Events from this relay that destination relays accepted as new
          *                        (OK true). Reflects the count at relay-completion time; late
          *                        OK responses may not be included.
          */
-        data class CompletedRelayInfo(
+        @Stable
+        data class SourceRelayInfo(
             val relay: NormalizedRelayUrl,
-            val eventsFound: Int,
+            val status: MutableStateFlow<ConnectionStatus>,
-            val eventsAccepted: Int,
+            val eventsFound: MutableStateFlow<Int>,
-        )
+            val eventsAccepted: MutableStateFlow<Int>,
+        ) {
+            constructor(relay: NormalizedRelayUrl, status: ConnectionStatus, eventsFound: Int, eventsAccepted: Int) :
+                this(relay, MutableStateFlow(status), MutableStateFlow(eventsFound), MutableStateFlow(eventsAccepted))
+        }
 
         /**
          * @param relay  The destination relay URL.
          * @param eventsSent  Number of events sent to this relay.
          * @param eventsAccepted  Number of OK=true responses received from this relay.
          */
+        @Stable
         data class DestinationRelayInfo(
             val relay: NormalizedRelayUrl,
-            val eventsSent: Int,
+            val eventsSent: MutableStateFlow<Int>,
-            val eventsAccepted: Int,
+            val eventsAccepted: MutableStateFlow<Int>,
-        )
+        ) {
+            constructor(relay: NormalizedRelayUrl, eventsSent: Int, eventsAccepted: Int) :
+                this(relay, MutableStateFlow(eventsSent), MutableStateFlow(eventsAccepted))
+        }
     }
 
     private val _syncState = MutableStateFlow<SyncState>(SyncState.Idle)
@@ -160,42 +207,57 @@ class EventSync(
     private val _liveActivity = MutableStateFlow(LiveSyncActivity())
     val liveActivity: StateFlow<LiveSyncActivity> = _liveActivity
 
-    // -------------------------------------------------------------------------
+    private fun emitLiveSnapshot(
-    // Live activity tracking (written from worker threads)
+        runningRelays: Set<NormalizedRelayUrl> = emptySet(),
-    // -------------------------------------------------------------------------
+        completedRelays: Set<NormalizedRelayUrl> = emptySet(),
-
+        liveOutboxTargets: Set<NormalizedRelayUrl> = emptySet(),
-    private val trackingCompletions = ArrayDeque<LiveSyncActivity.CompletedRelayInfo>()
+        liveInboxTargets: Set<NormalizedRelayUrl> = emptySet(),
-    private val trackingLock = Any()
+        liveDmTargets: Set<NormalizedRelayUrl> = emptySet(),
-
+    ) {
-    /** Destination relay sets, set at the start of each sync run. */
-    @Volatile private var liveOutboxTargets: Set<NormalizedRelayUrl> = emptySet()
-
-    @Volatile private var liveInboxTargets: Set<NormalizedRelayUrl> = emptySet()
-
-    @Volatile private var liveDmTargets: Set<NormalizedRelayUrl> = emptySet()
-
-    /** Per-destination-relay counters, updated atomically during a sync run. */
-    private val liveSentCountPerDestRelay = ConcurrentHashMap<NormalizedRelayUrl, AtomicInteger>()
-    private val liveAcceptedCountPerDestRelay = ConcurrentHashMap<NormalizedRelayUrl, AtomicInteger>()
-
-    private fun emitLiveSnapshot() {
-        val completions = synchronized(trackingLock) { trackingCompletions.toList() }
-
-        fun buildDestInfo(relays: Set<NormalizedRelayUrl>) =
-            relays.map { relay ->
-                LiveSyncActivity.DestinationRelayInfo(
-                    relay = relay,
-                    eventsSent = liveSentCountPerDestRelay[relay]?.get() ?: 0,
-                    eventsAccepted = liveAcceptedCountPerDestRelay[relay]?.get() ?: 0,
-                )
-            }
-
         _liveActivity.value =
             LiveSyncActivity(
-                recentCompletions = completions,
+                runningRelays =
-                outboxTargets = buildDestInfo(liveOutboxTargets),
+                    runningRelays.associateWith {
-                inboxTargets = buildDestInfo(liveInboxTargets),
+                        SourceRelayInfo(
-                dmTargets = buildDestInfo(liveDmTargets),
+                            relay = it,
+                            status = MutableStateFlow(LiveSyncActivity.ConnectionStatus.Connecting),
+                            eventsFound = MutableStateFlow<Int>(0),
+                            eventsAccepted = MutableStateFlow<Int>(0),
+                        )
+                    },
+                completedRelays =
+                    completedRelays.associateWith {
+                        SourceRelayInfo(
+                            relay = it,
+                            status = MutableStateFlow(LiveSyncActivity.ConnectionStatus.Connecting),
+                            eventsFound = MutableStateFlow<Int>(0),
+                            eventsAccepted = MutableStateFlow<Int>(0),
+                        )
+                    },
+                outboxTargets =
+                    liveOutboxTargets.associateWith { relay ->
+                        LiveSyncActivity.DestinationRelayInfo(
+                            relay = relay,
+                            eventsSent = MutableStateFlow<Int>(0),
+                            eventsAccepted = MutableStateFlow<Int>(0),
+                        )
+                    },
+                inboxTargets =
+                    liveInboxTargets.associateWith { relay ->
+                        LiveSyncActivity.DestinationRelayInfo(
+                            relay = relay,
+                            eventsSent = MutableStateFlow<Int>(0),
+                            eventsAccepted = MutableStateFlow<Int>(0),
+                        )
+                    },
+                dmTargets =
+                    liveDmTargets.associateWith { relay ->
+                        LiveSyncActivity.DestinationRelayInfo(
+                            relay = relay,
+                            eventsSent = MutableStateFlow<Int>(0),
+                            eventsAccepted = MutableStateFlow<Int>(0),
+                        )
+                    },
             )
     }
 
@@ -207,82 +269,42 @@ class EventSync(
 
     fun start() {
         if (_syncState.value is SyncState.Running) return
-        synchronized(trackingLock) { trackingCompletions.clear() }
-        liveSentCountPerDestRelay.clear()
-        liveAcceptedCountPerDestRelay.clear()
         _liveActivity.value = LiveSyncActivity()
         syncJob =
             scope.launch(Dispatchers.IO) {
-                runSync(startRelayIndex = 0, initialEventsSent = 0)
+                runSync()
-            }
-    }
-
-    fun resume() {
-        val paused = _syncState.value as? SyncState.Paused ?: return
-        if (_syncState.value is SyncState.Running) return
-        syncJob =
-            scope.launch(Dispatchers.IO) {
-                runSync(
-                    startRelayIndex = paused.nextRelayIndex,
-                    initialEventsSent = paused.eventsSent,
-                )
             }
     }
 
     fun cancel() {
         syncJob?.cancel()
-        val current = _syncState.value
-        _syncState.value =
-            if (current is SyncState.Running) {
-                SyncState.Paused(
-                    nextRelayIndex = maxOf(0, current.relaysCompleted - MAX_CONCURRENT_RELAYS),
-                    totalRelays = current.totalRelays,
-                    eventsSent = current.eventsSent,
-                )
-            } else {
-                SyncState.Idle
-            }
     }
 
     // -------------------------------------------------------------------------
     // Sync logic
     // -------------------------------------------------------------------------
-
+    suspend fun runSync() {
-    private suspend fun runSync(
-        startRelayIndex: Int,
-        initialEventsSent: Int,
-    ) {
         val startTime = System.currentTimeMillis()
-        val myPubKey = account.signer.pubKey
 
-        val allRelays = listOf("wss://relay.damus.io".normalizeRelayUrl())
+        _liveActivity.value = LiveSyncActivity()
 
-        /*
+        val myPubKey = accountPubKey
-                    account.cache.relayHints.relayDB
-                .keys()
-                .toList()
-         */
 
-        if (allRelays.isEmpty()) {
+        val relaysToProcess = relayDb()
+
+        if (relaysToProcess.isEmpty()) {
             _syncState.value =
                 SyncState.Error("No known relays found. Browse some content first to discover relays.")
             return
         }
 
-        val relaysToProcess = if (startRelayIndex > 0) allRelays.drop(startRelayIndex) else allRelays
+        val totalRelays = relaysToProcess.size
-        val totalRelays = allRelays.size
 
-        val outboxTargets = account.outboxRelays.flow.value
+        val outboxTargets = outboxTargets()
-        val inboxTargets = account.nip65RelayList.inboxFlow.value
+        val inboxTargets = inboxTargets()
-        val dmTargets = account.dmRelays.flow.value
+        val dmTargets = dmTargets()
 
-        // Publish destination relays so the UI can show them before events arrive.
+        val defaultFilters =
-        liveOutboxTargets = outboxTargets
-        liveInboxTargets = inboxTargets
-        liveDmTargets = dmTargets
-        emitLiveSnapshot()
-
-        val baseFilters =
             buildList {
                 if (outboxTargets.isNotEmpty()) add(Filter(authors = listOf(myPubKey)))
                 if (inboxTargets.isNotEmpty() || dmTargets.isNotEmpty()) {
@@ -290,43 +312,125 @@ class EventSync(
                 }
             }
 
-        if (baseFilters.isEmpty()) {
+        if (defaultFilters.isEmpty()) {
-            _syncState.value =
+            _syncState.value = SyncState.Error("No outbox, inbox, or DM relays configured.")
-                SyncState.Error("No outbox, inbox, or DM relays configured.")
             return
         }
 
-        // Thread-safe dedup sets and counters — relay workers run concurrently.
+        val usersRelays = outboxTargets + inboxTargets + dmTargets
-        val outboxSent = ConcurrentHashMap.newKeySet<String>()
+
-        val inboxSent = ConcurrentHashMap.newKeySet<String>()
+        val perRelayFilters =
-        val dmSent = ConcurrentHashMap.newKeySet<String>()
+            relaysToProcess.associateWith {
-        val totalSent = AtomicLong(initialEventsSent.toLong())
+                if (it !in usersRelays) {
+                    defaultFilters
+                } else {
+                    buildList {
+                        if (it !in outboxTargets) add(Filter(authors = listOf(myPubKey)))
+                        if (it !in inboxTargets && it !in dmTargets) {
+                            add(Filter(tags = mapOf("p" to listOf(myPubKey))))
+                        }
+                    }
+                }
+            }
+
+        emitLiveSnapshot(
+            emptySet(),
+            emptySet(),
+            outboxTargets,
+            inboxTargets,
+            dmTargets,
+        )
+
+        // Thread-safe dedup sets — prevent the same event from being forwarded twice when
+        // multiple source relays return the same event concurrently.
+        val outboxDedup = ConcurrentHashMap.newKeySet<String>()
+        val inboxDedup = ConcurrentHashMap.newKeySet<String>()
+        val dmDedup = ConcurrentHashMap.newKeySet<String>()
+        val totalSent = AtomicLong(0)
 
         // OK (true) tracking: maps each sent event ID to its source relay.
         // The first OK true for an event atomically removes it from this map,
         // crediting the acceptance to the source relay and preventing double-counting.
         val sourceRelayOfEvent = ConcurrentHashMap<HexKey, NormalizedRelayUrl>()
-        val acceptedCountPerRelay = ConcurrentHashMap<NormalizedRelayUrl, AtomicInteger>()
+        val acceptedCountPerSourceRelay = ConcurrentHashMap<NormalizedRelayUrl, AtomicInteger>()
         val totalAccepted = AtomicLong(0)
 
         val okListener =
             object : IRelayClientListener {
+                override fun onCannotConnect(
+                    relay: IRelayClient,
+                    errorMessage: String,
+                ) {
+                    super.onCannotConnect(relay, errorMessage)
+                    val currentStatus = liveActivity.value.runningRelays[relay.url]?.status
+                    if (currentStatus?.value !is LiveSyncActivity.ConnectionStatus.Error) {
+                        currentStatus?.tryEmit(LiveSyncActivity.ConnectionStatus.Error(errorMessage))
+                    }
+                }
+
+                override fun onSent(
+                    relay: IRelayClient,
+                    cmdStr: String,
+                    cmd: Command,
+                    success: Boolean,
+                ) {
+                    super.onSent(relay, cmdStr, cmd, success)
+
+                    if (cmd is EventCmd) {
+                        if (outboxDedup.contains(cmd.event.id)) {
+                            liveActivity.value.outboxTargets[relay.url]
+                                ?.eventsSent
+                                ?.update { it + 1 }
+                        }
+                        if (inboxDedup.contains(cmd.event.id)) {
+                            liveActivity.value.inboxTargets[relay.url]
+                                ?.eventsSent
+                                ?.update { it + 1 }
+                        }
+                        if (dmDedup.contains(cmd.event.id)) {
+                            liveActivity.value.dmTargets[relay.url]
+                                ?.eventsSent
+                                ?.update { it + 1 }
+                        }
+                    } else if (cmd is ReqCmd) {
+                        val currentStatus = liveActivity.value.runningRelays[relay.url]?.status
+                        if (currentStatus?.value != LiveSyncActivity.ConnectionStatus.Querying) {
+                            currentStatus?.tryEmit(LiveSyncActivity.ConnectionStatus.Querying)
+                        }
+                    }
+                }
+
                 override fun onIncomingMessage(
                     relay: IRelayClient,
                     msgStr: String,
                     msg: Message,
                 ) {
-                    if (msg is OkMessage && msg.success) {
+                    if (msg is OkMessage && msg.success && msg.message.isBlank()) {
                         // remove() is atomic: returns non-null only for the first OK per event.
                         val sourceRelay = sourceRelayOfEvent.remove(msg.eventId) ?: return
-                        acceptedCountPerRelay.getOrPut(sourceRelay) { AtomicInteger(0) }.incrementAndGet()
+                        acceptedCountPerSourceRelay.getOrPut(sourceRelay) { AtomicInteger(0) }.incrementAndGet()
                         totalAccepted.incrementAndGet()
-                        liveAcceptedCountPerDestRelay.getOrPut(relay.url) { AtomicInteger(0) }.incrementAndGet()
+
+                        if (outboxDedup.contains(msg.eventId)) {
+                            liveActivity.value.outboxTargets[relay.url]
+                                ?.eventsAccepted
+                                ?.update { it + 1 }
+                        }
+                        if (dmDedup.contains(msg.eventId)) {
+                            liveActivity.value.dmTargets[relay.url]
+                                ?.eventsAccepted
+                                ?.update { it + 1 }
+                        }
+                        if (inboxDedup.contains(msg.eventId)) {
+                            liveActivity.value.inboxTargets[relay.url]
+                                ?.eventsAccepted
+                                ?.update { it + 1 }
+                        }
                     }
                 }
             }
 
-        val relaysCompleted = AtomicInteger(startRelayIndex)
+        val relaysCompleted = AtomicInteger(0)
 
         _syncState.value =
             SyncState.Running(
@@ -335,75 +439,108 @@ class EventSync(
                 eventsSent = totalSent.get().toInt(),
             )
 
-        account.client.subscribe(okListener)
+        clientBuilder().use { client ->
-        try {
+            client.subscribe(okListener)
-            downloadFromPool(
+            try {
-                relays = relaysToProcess,
+                client.downloadFromPool(
-                baseFilters = baseFilters,
+                    relays = relaysToProcess,
-                onEvent = { event, sourceRelay ->
+                    filters = perRelayFilters,
-                    if (event.pubKey == myPubKey && outboxTargets.isNotEmpty()) {
+                    onEvent = { event, sourceRelay ->
-                        if (outboxSent.add(event.id)) {
+                        val isMyEvent = event.pubKey == myPubKey
-                            sourceRelayOfEvent[event.id] = sourceRelay
+                        val mentionsMe = event.tags.isTaggedUser(myPubKey)
-                            account.client.send(event, outboxTargets)
+                        val isDmKind = event.kind == 4 || event.kind == 1059
-                            totalSent.incrementAndGet()
-                            outboxTargets.forEach { dest ->
-                                liveSentCountPerDestRelay.getOrPut(dest) { AtomicInteger(0) }.incrementAndGet()
-                            }
-                        }
-                    }
-                    val pTagsMe = event.tags.isTaggedUser(myPubKey)
-                    if (pTagsMe) {
-                        if (event.kind == 4 || event.kind == 1059) {
-                            if (dmTargets.isNotEmpty() && dmSent.add(event.id)) {
-                                sourceRelayOfEvent[event.id] = sourceRelay
-                                account.client.send(event, dmTargets)
-                                totalSent.incrementAndGet()
-                                dmTargets.forEach { dest ->
-                                    liveSentCountPerDestRelay.getOrPut(dest) { AtomicInteger(0) }.incrementAndGet()
-                                }
-                            }
-                        } else {
-                            if (inboxTargets.isNotEmpty() && inboxSent.add(event.id)) {
-                                sourceRelayOfEvent[event.id] = sourceRelay
-                                account.client.send(event, inboxTargets)
-                                totalSent.incrementAndGet()
-                                inboxTargets.forEach { dest ->
-                                    liveSentCountPerDestRelay.getOrPut(dest) { AtomicInteger(0) }.incrementAndGet()
-                                }
-                            }
-                        }
-                    }
-                },
-                onRelayComplete = { relay, eventsFound ->
-                    val eventsAccepted = acceptedCountPerRelay[relay]?.get() ?: 0
-                    val info = LiveSyncActivity.CompletedRelayInfo(relay, eventsFound, eventsAccepted)
-                    synchronized(trackingLock) {
-                        trackingCompletions.addFirst(info)
-                        while (trackingCompletions.size > MAX_ACTIVITY_LOG) trackingCompletions.removeLast()
-                    }
-                    val completed = relaysCompleted.incrementAndGet()
-                    emitLiveSnapshot()
-                    _syncState.value =
-                        SyncState.Running(
-                            relaysCompleted = completed,
-                            totalRelays = totalRelays,
-                            eventsSent = totalSent.get().toInt(),
-                        )
-                },
-            )
 
-            _syncState.value =
+                        val live = liveActivity.value
-                SyncState.Done(
+
-                    totalEventsSent = totalSent.get().toInt(),
+                        // Each routing rule is independent: an event can match more than one.
-                    totalEventsAccepted = totalAccepted.get().toInt(),
+                        if (isMyEvent && outboxTargets.isNotEmpty()) {
-                    durationMs = System.currentTimeMillis() - startTime,
+                            if (outboxDedup.add(event.id)) {
+                                sourceRelayOfEvent[event.id] = sourceRelay
+                                client.send(event, outboxTargets)
+                                totalSent.incrementAndGet()
+
+                                live.runningRelays[sourceRelay]?.eventsFound?.update { it + 1 }
+                                live.completedRelays[sourceRelay]?.eventsFound?.update { it + 1 }
+                            }
+                        }
+                        if (mentionsMe && isDmKind && dmTargets.isNotEmpty()) {
+                            if (dmDedup.add(event.id)) {
+                                sourceRelayOfEvent[event.id] = sourceRelay
+                                client.send(event, dmTargets)
+                                totalSent.incrementAndGet()
+
+                                live.runningRelays[sourceRelay]?.eventsFound?.update { it + 1 }
+                                live.completedRelays[sourceRelay]?.eventsFound?.update { it + 1 }
+                            }
+                        }
+                        if (mentionsMe && !isDmKind && inboxTargets.isNotEmpty()) {
+                            if (inboxDedup.add(event.id)) {
+                                sourceRelayOfEvent[event.id] = sourceRelay
+                                client.send(event, inboxTargets)
+                                totalSent.incrementAndGet()
+
+                                live.runningRelays[sourceRelay]?.eventsFound?.update { it + 1 }
+                                live.completedRelays[sourceRelay]?.eventsFound?.update { it + 1 }
+                            }
+                        }
+                    },
+                    onRelayStart = { relay ->
+                        _liveActivity.update {
+                            it.copy(
+                                runningRelays =
+                                    it.runningRelays +
+                                        Pair(relay, SourceRelayInfo(relay, LiveSyncActivity.ConnectionStatus.Connecting, 0, 0)),
+                            )
+                        }
+                    },
+                    onRelayComplete = { relay ->
+                        _liveActivity.update {
+                            val newCompleted = it.runningRelays[relay]
+                            it.copy(
+                                runningRelays = it.runningRelays.minus(relay),
+                                completedRelays =
+                                    if (newCompleted != null) {
+                                        it.completedRelays.plus(relay to newCompleted)
+                                    } else {
+                                        it.completedRelays
+                                    },
+                            )
+                        }
+
+                        val status = _liveActivity.value.completedRelays[relay]?.status
+
+                        if (status?.value !is LiveSyncActivity.ConnectionStatus.Error) {
+                            status?.tryEmit(LiveSyncActivity.ConnectionStatus.Completed)
+                        }
+
+                        _syncState.value =
+                            SyncState.Running(
+                                relaysCompleted = relaysCompleted.incrementAndGet(),
+                                totalRelays = totalRelays,
+                                eventsSent = totalSent.get().toInt(),
+                            )
+                    },
                 )
-        } catch (e: CancellationException) {
+
-            throw e
+                _syncState.value =
-        } catch (e: Exception) {
+                    SyncState.Done(
-            _syncState.value = SyncState.Error(e.message ?: "Unknown error")
+                        totalEventsSent = totalSent.get().toInt(),
-        } finally {
+                        totalEventsAccepted = totalAccepted.get().toInt(),
-            account.client.unsubscribe(okListener)
+                        durationMs = System.currentTimeMillis() - startTime,
+                    )
+            } catch (e: CancellationException) {
+                _syncState.value =
+                    SyncState.Done(
+                        totalEventsSent = totalSent.get().toInt(),
+                        totalEventsAccepted = totalAccepted.get().toInt(),
+                        durationMs = System.currentTimeMillis() - startTime,
+                    )
+                throw e
+            } catch (e: Exception) {
+                _syncState.value = SyncState.Error(e.message ?: "Unknown error")
+            } finally {
+                client.unsubscribe(okListener)
+            }
         }
     }
 
@@ -414,11 +551,12 @@ class EventSync(
      *
      * [onEvent] receives the event and the URL of the relay it came from.
      */
-    private suspend fun downloadFromPool(
+    private suspend fun INostrClient.downloadFromPool(
         relays: List<NormalizedRelayUrl>,
-        baseFilters: List<Filter>,
+        filters: Map<NormalizedRelayUrl, List<Filter>>,
         onEvent: (Event, NormalizedRelayUrl) -> Unit,
-        onRelayComplete: (NormalizedRelayUrl, Int) -> Unit,
+        onRelayStart: (NormalizedRelayUrl) -> Unit,
+        onRelayComplete: (NormalizedRelayUrl) -> Unit,
     ) {
         val semaphore = Semaphore(MAX_CONCURRENT_RELAYS)
         supervisorScope {
@@ -427,8 +565,11 @@ class EventSync(
                 semaphore.acquire()
                 launch {
                     try {
-                        val eventsFound = downloadFromRelay(relay, baseFilters) { event -> onEvent(event, relay) }
+                        onRelayStart(relay)
-                        onRelayComplete(relay, eventsFound)
+                        filters[relay]?.let { filtersForRelay ->
+                            downloadFromRelay(relay, filtersForRelay) { event -> onEvent(event, relay) }
+                        } ?: 0
+                        onRelayComplete(relay)
                     } finally {
                         semaphore.release()
                     }
@@ -443,9 +584,9 @@ class EventSync(
      *
      * @return total number of events received across all pages.
      */
-    private suspend fun downloadFromRelay(
+    private suspend fun INostrClient.downloadFromRelay(
         relay: NormalizedRelayUrl,
-        baseFilters: List<Filter>,
+        filters: List<Filter>,
         onEvent: (Event) -> Unit,
-    ): Int = account.client.reqBypassingRelayLimits(relay, baseFilters, RELAY_TIMEOUT_MS, onEvent)
+    ): Int = reqBypassingRelayLimits(relay, filters, RELAY_TIMEOUT_MS, onEvent)
 }

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/relays/eventsync/EventSyncScreen.kt

@@ -31,10 +31,9 @@ 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.lazy.LazyColumn
-import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.lazy.itemsIndexed
 import androidx.compose.foundation.shape.CircleShape
-import androidx.compose.foundation.verticalScroll
 import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.Button
 import androidx.compose.material3.ButtonDefaults
@@ -56,6 +55,7 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
@@ -66,6 +66,7 @@ import com.vitorpamplona.amethyst.ui.navigation.topbars.TopBarWithBackButton
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import com.vitorpamplona.amethyst.ui.stringRes
 import com.vitorpamplona.amethyst.ui.theme.ThemeComparisonColumn
+import com.vitorpamplona.amethyst.ui.theme.ThemeComparisonRow
 import com.vitorpamplona.quartz.nip01Core.relay.normalizer.NormalizedRelayUrl
 
 @Composable
@@ -74,11 +75,9 @@ fun EventSyncScreen(
     nav: INav,
 ) {
     val syncViewModel = accountViewModel.eventSync
-
+    val isMobileOrMetered by accountViewModel.settings.isMobileOrMeteredConnection.collectAsStateWithLifecycle()
     val syncState by syncViewModel.syncState.collectAsStateWithLifecycle()
     val liveActivity by syncViewModel.liveActivity.collectAsStateWithLifecycle()
-    val isMobileOrMetered by accountViewModel.settings.isMobileOrMeteredConnection.collectAsStateWithLifecycle()
-    var showMobileDataDialog by remember { mutableStateOf(false) }
 
     Scaffold(
         topBar = {
@@ -88,172 +87,192 @@ fun EventSyncScreen(
             )
         },
     ) { padding ->
-        Column(
+        Column(Modifier.fillMaxSize().padding(padding)) {
-            modifier =
+            EventScreenBody(
-                Modifier
+                syncState = syncState,
-                    .fillMaxSize()
+                liveActivity = liveActivity,
-                    .padding(padding)
+                isMobileOrMetered = isMobileOrMetered,
-                    .padding(horizontal = 16.dp)
+                onStart = syncViewModel::start,
-                    .verticalScroll(rememberScrollState()),
+                onCancel = syncViewModel::cancel,
-            verticalArrangement = Arrangement.spacedBy(16.dp),
+            )
-        ) {
+        }
+    }
+}
+
+@Composable
+fun EventScreenBody(
+    syncState: EventSync.SyncState,
+    liveActivity: EventSync.LiveSyncActivity,
+    isMobileOrMetered: Boolean = false,
+    onStart: () -> Unit = {},
+    onCancel: () -> Unit = {},
+) {
+    LazyColumn(
+        modifier =
+            Modifier
+                .fillMaxSize()
+                .padding(horizontal = 16.dp),
+        verticalArrangement = Arrangement.spacedBy(2.dp),
+    ) {
+        item {
             // ---- Progress / Status area ----
-            when (val state = syncState) {
+            when (syncState) {
-                is EventSync.SyncState.Idle -> {
+                is EventSync.SyncState.Idle -> ExplanationCard(isMobileOrMetered, onStart)
-                    // ---- Explanation card ----
+                is EventSync.SyncState.Running -> SyncProgressCard(state = syncState, onCancel)
-                    Card(
+                is EventSync.SyncState.Done -> DoneCard(state = syncState, isMobileOrMetered, onStart)
-                        modifier = Modifier.fillMaxWidth(),
+                is EventSync.SyncState.Error -> ErrorCard(syncState.message, isMobileOrMetered, onStart)
-                        colors = CardDefaults.cardColors(containerColor = MaterialTheme.colorScheme.surfaceVariant),
-                    ) {
-                        Column(modifier = Modifier.padding(16.dp)) {
-                            Text(
-                                text = stringRes(R.string.event_sync_what_happens_title),
-                                style = MaterialTheme.typography.titleMedium,
-                                fontWeight = FontWeight.Bold,
-                            )
-                            Spacer(Modifier.height(8.dp))
-                            Text(
-                                text = stringRes(R.string.event_sync_what_happens_body),
-                                style = MaterialTheme.typography.bodyMedium,
-                            )
-                            Spacer(Modifier.height(12.dp))
-                            StepRow(number = "1", text = stringRes(R.string.event_sync_step1))
-                            Spacer(Modifier.height(4.dp))
-                            StepRow(number = "2", text = stringRes(R.string.event_sync_step2))
-                            Spacer(Modifier.height(4.dp))
-                            StepRow(number = "3", text = stringRes(R.string.event_sync_step3))
-                        }
-                    }
-
-                    // ---- WiFi warning ----
-                    if (isMobileOrMetered) {
-                        Card(
-                            modifier = Modifier.fillMaxWidth(),
-                            colors =
-                                CardDefaults.cardColors(
-                                    containerColor = MaterialTheme.colorScheme.errorContainer,
-                                ),
-                        ) {
-                            Text(
-                                text = stringRes(R.string.event_sync_wifi_warning),
-                                style = MaterialTheme.typography.bodyMedium,
-                                color = MaterialTheme.colorScheme.onErrorContainer,
-                                modifier = Modifier.padding(16.dp),
-                            )
-                        }
-                    }
-                }
-
-                is EventSync.SyncState.Running -> {
-                    SyncProgressCard(state = state)
-                }
-
-                is EventSync.SyncState.Paused -> {
-                    PausedCard(state = state)
-                }
-
-                is EventSync.SyncState.Done -> {
-                    DoneCard(state = state)
-                }
-
-                is EventSync.SyncState.Error -> {
-                    ErrorCard(message = state.message)
-                }
             }
+        }
 
-            // ---- Live relay activity (shown during and after sync) ----
+        // ---- Live relay activity (shown during and after sync) ----
-            if (liveActivity.outboxTargets.isNotEmpty() ||
+        if (liveActivity.outboxTargets.isNotEmpty() ||
-                liveActivity.inboxTargets.isNotEmpty() ||
+            liveActivity.inboxTargets.isNotEmpty() ||
-                liveActivity.dmTargets.isNotEmpty()
+            liveActivity.dmTargets.isNotEmpty()
-            ) {
+        ) {
+            item {
+                Spacer(Modifier.height(16.dp))
                 DestinationRelaysCard(activity = liveActivity)
             }
+        }
 
-            if (liveActivity.recentCompletions.isNotEmpty()) {
+        val runningSize = liveActivity.runningRelays.size
-                ActivityLogCard(completions = liveActivity.recentCompletions)
+        if (runningSize > 0) {
-            }
+            item {
-
+                Spacer(Modifier.height(16.dp))
-            // ---- Action buttons ----
+                Text(
-            when (val state = syncState) {
+                    text = stringRes(R.string.event_sync_activity_log, runningSize),
-                is EventSync.SyncState.Idle,
+                    style = MaterialTheme.typography.titleSmall,
-                is EventSync.SyncState.Done,
+                    fontWeight = FontWeight.SemiBold,
-                is EventSync.SyncState.Error,
-                -> {
-                    Button(
-                        onClick = {
-                            if (isMobileOrMetered) {
-                                showMobileDataDialog = true
-                            } else {
-                                syncViewModel.start()
-                            }
-                        },
-                        modifier = Modifier.fillMaxWidth(),
-                    ) {
-                        Text(stringRes(R.string.event_sync_start))
-                    }
-                }
-
-                is EventSync.SyncState.Paused -> {
-                    Button(
-                        onClick = {
-                            if (isMobileOrMetered) {
-                                showMobileDataDialog = true
-                            } else {
-                                syncViewModel.resume()
-                            }
-                        },
-                        modifier = Modifier.fillMaxWidth(),
-                    ) {
-                        Text(stringRes(R.string.event_sync_resume))
-                    }
-                    OutlinedButton(
-                        onClick = { syncViewModel.start() },
-                        modifier = Modifier.fillMaxWidth(),
-                    ) {
-                        Text(stringRes(R.string.event_sync_start_over))
-                    }
-                }
-
-                is EventSync.SyncState.Running -> {
-                    OutlinedButton(
-                        onClick = { syncViewModel.cancel() },
-                        modifier = Modifier.fillMaxWidth(),
-                        colors =
-                            ButtonDefaults.outlinedButtonColors(
-                                contentColor = MaterialTheme.colorScheme.error,
-                            ),
-                    ) {
-                        Text(stringRes(R.string.event_sync_pause))
-                    }
-                }
-            }
-
-            // ---- Mobile-data confirmation dialog ----
-            if (showMobileDataDialog) {
-                val isPaused = syncState is EventSync.SyncState.Paused
-                AlertDialog(
-                    onDismissRequest = { showMobileDataDialog = false },
-                    title = { Text(stringRes(R.string.event_sync_mobile_data_dialog_title)) },
-                    text = { Text(stringRes(R.string.event_sync_wifi_warning)) },
-                    confirmButton = {
-                        Button(
-                            onClick = {
-                                showMobileDataDialog = false
-                                if (isPaused) syncViewModel.resume() else syncViewModel.start()
-                            },
-                        ) {
-                            Text(stringRes(R.string.event_sync_start_anyway))
-                        }
-                    },
-                    dismissButton = {
-                        TextButton(onClick = { showMobileDataDialog = false }) {
-                            Text(stringRes(R.string.event_sync_cancel))
-                        }
-                    },
                 )
+                Spacer(Modifier.height(5.dp))
             }
 
-            Spacer(Modifier.height(16.dp))
+            itemsIndexed(liveActivity.runningRelays.values.toList(), key = { _, item -> item.relay.url }) { index, info ->
+                if (index > 0) {
+                    HorizontalDivider(
+                        color = MaterialTheme.colorScheme.outlineVariant.copy(alpha = 0.5f),
+                    )
+                }
+                ActivityLogRow(info = info)
+            }
+        }
+
+        val completedSize = liveActivity.completedRelays.size
+        if (completedSize > 0) {
+            item {
+                Spacer(Modifier.height(16.dp))
+                Text(
+                    text = stringRes(R.string.event_sync_activity_log_finished, completedSize),
+                    style = MaterialTheme.typography.titleSmall,
+                    fontWeight = FontWeight.SemiBold,
+                )
+                Spacer(Modifier.height(5.dp))
+            }
+
+            itemsIndexed(liveActivity.sortedCompletedRelays, key = { _, item -> item.relay.url }) { index, info ->
+                if (index > 0) {
+                    HorizontalDivider(
+                        color = MaterialTheme.colorScheme.outlineVariant.copy(alpha = 0.5f),
+                    )
+                }
+                ActivityLogRow(info = info)
+            }
+        }
+    }
+}
+
+@Composable
+private fun StartSyncButton(
+    isMobileOrMetered: Boolean,
+    onClick: () -> Unit,
+) {
+    var showMobileDataDialog by remember { mutableStateOf(false) }
+
+    Button(
+        onClick = {
+            if (isMobileOrMetered) {
+                showMobileDataDialog = true
+            } else {
+                onClick()
+            }
+        },
+        modifier = Modifier.fillMaxWidth(),
+    ) {
+        Text(stringRes(R.string.event_sync_start))
+    }
+
+    // ---- Mobile-data confirmation dialog ----
+    if (showMobileDataDialog) {
+        AlertDialog(
+            onDismissRequest = { showMobileDataDialog = false },
+            title = { Text(stringRes(R.string.event_sync_mobile_data_dialog_title)) },
+            text = { Text(stringRes(R.string.event_sync_wifi_warning)) },
+            confirmButton = {
+                Button(
+                    onClick = {
+                        showMobileDataDialog = false
+                        onClick()
+                    },
+                ) {
+                    Text(stringRes(R.string.event_sync_start_anyway))
+                }
+            },
+            dismissButton = {
+                TextButton(onClick = { showMobileDataDialog = false }) {
+                    Text(stringRes(R.string.event_sync_cancel))
+                }
+            },
+        )
+    }
+}
+
+@Composable
+private fun ExplanationCard(
+    isMobileOrMetered: Boolean,
+    onStart: () -> Unit,
+) {
+    // ---- Explanation card ----
+    Card(
+        modifier = Modifier.fillMaxWidth(),
+        colors = CardDefaults.cardColors(containerColor = MaterialTheme.colorScheme.surfaceVariant),
+    ) {
+        Column(modifier = Modifier.padding(16.dp)) {
+            Text(
+                text = stringRes(R.string.event_sync_what_happens_title),
+                style = MaterialTheme.typography.titleMedium,
+                fontWeight = FontWeight.Bold,
+            )
+            Spacer(Modifier.height(8.dp))
+            Text(
+                text = stringRes(R.string.event_sync_what_happens_body),
+                style = MaterialTheme.typography.bodyMedium,
+            )
+            Spacer(Modifier.height(12.dp))
+            StepRow(number = "1", text = stringRes(R.string.event_sync_step1))
+            Spacer(Modifier.height(4.dp))
+            StepRow(number = "2", text = stringRes(R.string.event_sync_step2))
+            Spacer(Modifier.height(4.dp))
+            StepRow(number = "3", text = stringRes(R.string.event_sync_step3))
+            Spacer(Modifier.height(10.dp))
+            // ---- WiFi warning ----
+            if (isMobileOrMetered) {
+                Card(
+                    modifier = Modifier.fillMaxWidth(),
+                    colors =
+                        CardDefaults.cardColors(
+                            containerColor = MaterialTheme.colorScheme.errorContainer,
+                        ),
+                ) {
+                    Text(
+                        text = stringRes(R.string.event_sync_wifi_warning),
+                        style = MaterialTheme.typography.bodyMedium,
+                        color = MaterialTheme.colorScheme.onErrorContainer,
+                        modifier = Modifier.padding(16.dp),
+                    )
+                }
+                Spacer(Modifier.height(10.dp))
+            }
+            StartSyncButton(isMobileOrMetered = isMobileOrMetered, onStart)
         }
     }
 }
@@ -263,7 +282,10 @@ fun EventSyncScreen(
 // -------------------------------------------------------------------------
 
 @Composable
-private fun SyncProgressCard(state: EventSync.SyncState.Running) {
+private fun SyncProgressCard(
+    state: EventSync.SyncState.Running,
+    onCancel: () -> Unit,
+) {
     Card(
         modifier = Modifier.fillMaxWidth(),
         colors = CardDefaults.cardColors(containerColor = MaterialTheme.colorScheme.surface),
@@ -292,44 +314,27 @@ private fun SyncProgressCard(state: EventSync.SyncState.Running) {
                 style = MaterialTheme.typography.bodySmall,
                 color = MaterialTheme.colorScheme.onSurfaceVariant,
             )
-        }
+            Spacer(Modifier.height(10.dp))
-    }
+            OutlinedButton(
-}
+                onClick = onCancel,
-
+                modifier = Modifier.fillMaxWidth(),
-@Composable
+                colors =
-private fun PausedCard(state: EventSync.SyncState.Paused) {
+                    ButtonDefaults.outlinedButtonColors(
-    Card(
+                        contentColor = MaterialTheme.colorScheme.error,
-        modifier = Modifier.fillMaxWidth(),
-        colors =
-            CardDefaults.cardColors(
-                containerColor = MaterialTheme.colorScheme.secondaryContainer,
-            ),
-    ) {
-        Column(modifier = Modifier.padding(16.dp)) {
-            Text(
-                text = stringRes(R.string.event_sync_paused_title),
-                style = MaterialTheme.typography.titleSmall,
-                fontWeight = FontWeight.Bold,
-                color = MaterialTheme.colorScheme.onSecondaryContainer,
-            )
-            Spacer(Modifier.height(4.dp))
-            Text(
-                text =
-                    stringRes(
-                        R.string.event_sync_paused_body,
-                        state.nextRelayIndex,
-                        state.totalRelays,
-                        state.eventsSent,
                     ),
-                style = MaterialTheme.typography.bodyMedium,
+            ) {
-                color = MaterialTheme.colorScheme.onSecondaryContainer,
+                Text(stringRes(R.string.event_sync_cancel))
-            )
+            }
         }
     }
 }
 
 @Composable
-private fun DoneCard(state: EventSync.SyncState.Done) {
+private fun DoneCard(
+    state: EventSync.SyncState.Done,
+    isMobileOrMetered: Boolean = false,
+    onStart: () -> Unit = { },
+) {
     Card(
         modifier = Modifier.fillMaxWidth(),
         colors =
@@ -363,12 +368,18 @@ private fun DoneCard(state: EventSync.SyncState.Done) {
                 style = MaterialTheme.typography.bodySmall,
                 color = MaterialTheme.colorScheme.onPrimaryContainer.copy(alpha = 0.7f),
             )
+            Spacer(Modifier.height(10.dp))
+            StartSyncButton(isMobileOrMetered, onStart)
         }
     }
 }
 
 @Composable
-private fun ErrorCard(message: String) {
+private fun ErrorCard(
+    message: String,
+    isMobileOrMetered: Boolean = false,
+    onStart: () -> Unit = {},
+) {
     Card(
         modifier = Modifier.fillMaxWidth(),
         colors =
@@ -389,6 +400,8 @@ private fun ErrorCard(message: String) {
                 style = MaterialTheme.typography.bodyMedium,
                 color = MaterialTheme.colorScheme.onErrorContainer,
             )
+            Spacer(Modifier.height(10.dp))
+            StartSyncButton(isMobileOrMetered, onStart)
         }
     }
 }
@@ -418,7 +431,7 @@ private fun DestinationRelaysCard(activity: EventSync.LiveSyncActivity) {
                 Spacer(Modifier.height(10.dp))
                 DestinationSection(
                     label = stringRes(R.string.event_sync_outbox_relays),
-                    relays = activity.outboxTargets,
+                    relays = activity.outboxTargets.values,
                     color = MaterialTheme.colorScheme.primary,
                 )
             }
@@ -429,7 +442,7 @@ private fun DestinationRelaysCard(activity: EventSync.LiveSyncActivity) {
                 Spacer(Modifier.height(10.dp))
                 DestinationSection(
                     label = stringRes(R.string.event_sync_inbox_relays),
-                    relays = activity.inboxTargets,
+                    relays = activity.inboxTargets.values,
                     color = MaterialTheme.colorScheme.secondary,
                 )
             }
@@ -440,7 +453,7 @@ private fun DestinationRelaysCard(activity: EventSync.LiveSyncActivity) {
                 Spacer(Modifier.height(10.dp))
                 DestinationSection(
                     label = stringRes(R.string.event_sync_dm_relays),
-                    relays = activity.dmTargets,
+                    relays = activity.dmTargets.values,
                     color = MaterialTheme.colorScheme.tertiary,
                 )
             }
@@ -451,7 +464,7 @@ private fun DestinationRelaysCard(activity: EventSync.LiveSyncActivity) {
 @Composable
 private fun DestinationSection(
     label: String,
-    relays: List<EventSync.LiveSyncActivity.DestinationRelayInfo>,
+    relays: Collection<EventSync.LiveSyncActivity.DestinationRelayInfo>,
     color: androidx.compose.ui.graphics.Color,
 ) {
     Text(
@@ -478,6 +491,8 @@ private fun DestinationRelayRow(
     info: EventSync.LiveSyncActivity.DestinationRelayInfo,
     color: androidx.compose.ui.graphics.Color,
 ) {
+    val eventsSent by info.eventsSent.collectAsStateWithLifecycle()
+
     Row(
         modifier =
             Modifier
@@ -498,70 +513,39 @@ private fun DestinationRelayRow(
             style = MaterialTheme.typography.bodySmall,
             color = MaterialTheme.colorScheme.onSurface,
             maxLines = 1,
-            overflow = TextOverflow.Ellipsis,
+            overflow = TextOverflow.StartEllipsis,
             modifier = Modifier.weight(1f),
         )
-        if (info.eventsSent > 0) {
+        if (eventsSent > 0) {
+            val eventsAccepted by info.eventsAccepted.collectAsStateWithLifecycle()
             Text(
-                text = stringRes(R.string.event_sync_log_recv, formatCount(info.eventsSent)),
+                text = stringRes(R.string.event_sync_log_sent, formatCount(eventsSent)),
                 style = MaterialTheme.typography.bodySmall,
                 color = MaterialTheme.colorScheme.onSurfaceVariant,
+                modifier = Modifier.weight(0.3f),
+                textAlign = TextAlign.End,
+                maxLines = 1,
+                overflow = TextOverflow.StartEllipsis,
             )
-            Spacer(Modifier.width(8.dp))
             Text(
-                text = stringRes(R.string.event_sync_log_new, formatCount(info.eventsAccepted)),
+                text = stringRes(R.string.event_sync_log_new, formatCount(eventsAccepted)),
                 style = MaterialTheme.typography.bodySmall,
-                fontWeight = if (info.eventsAccepted > 0) FontWeight.SemiBold else FontWeight.Normal,
+                fontWeight = if (eventsAccepted > 0) FontWeight.SemiBold else FontWeight.Normal,
-                color = if (info.eventsAccepted > 0) color else MaterialTheme.colorScheme.onSurfaceVariant,
+                color = if (eventsAccepted > 0) color else MaterialTheme.colorScheme.onSurfaceVariant,
+                modifier = Modifier.weight(0.3f),
+                textAlign = TextAlign.End,
+                maxLines = 1,
+                overflow = TextOverflow.StartEllipsis,
             )
         }
     }
 }
 
-/**
- * Scrollable log of recently completed relays, newest at the top.
- * Uses a fixed-height inner scroll area so it doesn't compete with the outer scroll.
- */
 @Composable
-private fun ActivityLogCard(completions: List<EventSync.LiveSyncActivity.CompletedRelayInfo>) {
+private fun ActivityLogRow(info: EventSync.LiveSyncActivity.SourceRelayInfo) {
-    Card(
+    val eventsFound by info.eventsFound.collectAsStateWithLifecycle()
-        modifier = Modifier.fillMaxWidth(),
+    val status by info.status.collectAsStateWithLifecycle()
-        colors = CardDefaults.cardColors(containerColor = MaterialTheme.colorScheme.surface),
+    val hasEvents = eventsFound > 0
-        elevation = CardDefaults.cardElevation(defaultElevation = 1.dp),
-    ) {
-        Column(modifier = Modifier.padding(16.dp)) {
-            Text(
-                text = stringRes(R.string.event_sync_activity_log, completions.size),
-                style = MaterialTheme.typography.titleSmall,
-                fontWeight = FontWeight.SemiBold,
-            )
-            Spacer(Modifier.height(10.dp))
-
-            Box(
-                modifier =
-                    Modifier
-                        .fillMaxWidth()
-                        .height(260.dp)
-                        .verticalScroll(rememberScrollState()),
-            ) {
-                Column(verticalArrangement = Arrangement.spacedBy(2.dp)) {
-                    completions.forEachIndexed { index, info ->
-                        if (index > 0) {
-                            HorizontalDivider(
-                                color = MaterialTheme.colorScheme.outlineVariant.copy(alpha = 0.5f),
-                            )
-                        }
-                        ActivityLogRow(info = info)
-                    }
-                }
-            }
-        }
-    }
-}
-
-@Composable
-private fun ActivityLogRow(info: EventSync.LiveSyncActivity.CompletedRelayInfo) {
-    val hasEvents = info.eventsFound > 0
     val dotColor =
         if (hasEvents) {
             MaterialTheme.colorScheme.primary
@@ -595,32 +579,51 @@ private fun ActivityLogRow(info: EventSync.LiveSyncActivity.CompletedRelayInfo)
             style = MaterialTheme.typography.bodySmall,
             color = textColor,
             maxLines = 1,
-            overflow = TextOverflow.Ellipsis,
+            overflow = TextOverflow.StartEllipsis,
-            modifier = Modifier.weight(1f),
+            modifier = Modifier.weight(0.6f),
         )
         if (hasEvents) {
+            val eventsAccepted by info.eventsAccepted.collectAsStateWithLifecycle()
             Text(
-                text = stringRes(R.string.event_sync_log_recv, formatCount(info.eventsFound)),
+                text = stringRes(R.string.event_sync_log_recv, formatCount(eventsFound)),
                 style = MaterialTheme.typography.bodySmall,
                 color = textColor,
+                modifier = Modifier.weight(0.2f),
+                maxLines = 1,
+                textAlign = TextAlign.End,
+                overflow = TextOverflow.StartEllipsis,
             )
-            Spacer(Modifier.width(8.dp))
             Text(
-                text = stringRes(R.string.event_sync_log_new, formatCount(info.eventsAccepted)),
+                text = stringRes(R.string.event_sync_log_new, formatCount(eventsAccepted)),
                 style = MaterialTheme.typography.bodySmall,
-                fontWeight = if (info.eventsAccepted > 0) FontWeight.SemiBold else FontWeight.Normal,
+                fontWeight = if (eventsAccepted > 0) FontWeight.SemiBold else FontWeight.Normal,
                 color =
-                    if (info.eventsAccepted > 0) {
+                    if (eventsAccepted > 0) {
                         MaterialTheme.colorScheme.primary
                     } else {
                         MaterialTheme.colorScheme.onSurfaceVariant
                     },
+                maxLines = 1,
+                textAlign = TextAlign.End,
+                overflow = TextOverflow.StartEllipsis,
+                modifier = Modifier.weight(0.2f),
             )
         } else {
+            val status by info.status.collectAsStateWithLifecycle()
             Text(
-                text = stringRes(R.string.event_sync_no_events),
+                text =
+                    when (status) {
+                        EventSync.LiveSyncActivity.ConnectionStatus.Connecting -> stringRes(R.string.event_sync_status_connecting)
+                        EventSync.LiveSyncActivity.ConnectionStatus.Querying -> stringRes(R.string.event_sync_status_downloading)
+                        is EventSync.LiveSyncActivity.ConnectionStatus.Error -> (status as EventSync.LiveSyncActivity.ConnectionStatus.Error).msg.ifBlank { stringRes(R.string.event_sync_status_error) }
+                        EventSync.LiveSyncActivity.ConnectionStatus.Completed -> stringRes(R.string.event_sync_status_completed)
+                    },
                 style = MaterialTheme.typography.bodySmall,
                 color = textColor,
+                textAlign = TextAlign.End,
+                maxLines = 1,
+                overflow = TextOverflow.StartEllipsis,
+                modifier = Modifier.weight(0.45f),
             )
         }
     }
@@ -662,8 +665,7 @@ private fun NormalizedRelayUrl.displayHost(): String =
 /** Formats a count with K/M suffix for large numbers. */
 private fun formatCount(n: Int): String =
     when {
-        n >= 1_000_000 -> "${n / 1_000_000}M"
+        n >= 1_000_000 -> "${n / 1_000}K"
-        n >= 1_000 -> "${n / 1_000}K"
         else -> n.toString()
     }
 
@@ -671,19 +673,25 @@ private fun formatCount(n: Int): String =
 // Preview data
 // -------------------------------------------------------------------------
 
+private val previewRunning =
+    listOf(
+        EventSync.LiveSyncActivity.SourceRelayInfo(NormalizedRelayUrl("wss://relay.damus.io"), EventSync.LiveSyncActivity.ConnectionStatus.Querying, 1247, 891),
+        EventSync.LiveSyncActivity.SourceRelayInfo(NormalizedRelayUrl("wss://nos.lol"), EventSync.LiveSyncActivity.ConnectionStatus.Querying, 892, 45),
+        EventSync.LiveSyncActivity.SourceRelayInfo(NormalizedRelayUrl("wss://nos2.lol"), EventSync.LiveSyncActivity.ConnectionStatus.Connecting, 0, 0),
+    )
+
 private val previewCompletions =
     listOf(
-        EventSync.LiveSyncActivity.CompletedRelayInfo(NormalizedRelayUrl("wss://relay.damus.io"), 1247, 891),
+        EventSync.LiveSyncActivity.SourceRelayInfo(NormalizedRelayUrl("wss://relay.nostr.band"), EventSync.LiveSyncActivity.ConnectionStatus.Completed, 3500, 3498),
-        EventSync.LiveSyncActivity.CompletedRelayInfo(NormalizedRelayUrl("wss://nos.lol"), 892, 45),
+        EventSync.LiveSyncActivity.SourceRelayInfo(NormalizedRelayUrl("wss://slow.relay.example.com"), EventSync.LiveSyncActivity.ConnectionStatus.Completed, 0, 0),
-        EventSync.LiveSyncActivity.CompletedRelayInfo(NormalizedRelayUrl("wss://relay.nostr.band"), 3500, 3498),
+        EventSync.LiveSyncActivity.SourceRelayInfo(NormalizedRelayUrl("wss://nostr.bitcoiner.social"), EventSync.LiveSyncActivity.ConnectionStatus.Completed, 15, 0),
-        EventSync.LiveSyncActivity.CompletedRelayInfo(NormalizedRelayUrl("wss://slow.relay.example.com"), 0, 0),
+        EventSync.LiveSyncActivity.SourceRelayInfo(NormalizedRelayUrl("wss://unreachable.relay.xyz"), EventSync.LiveSyncActivity.ConnectionStatus.Error("connection failed"), 0, 0),
-        EventSync.LiveSyncActivity.CompletedRelayInfo(NormalizedRelayUrl("wss://nostr.bitcoiner.social"), 15, 0),
-        EventSync.LiveSyncActivity.CompletedRelayInfo(NormalizedRelayUrl("wss://unreachable.relay.xyz"), 0, 0),
     )
 
 private val previewActivity =
     EventSync.LiveSyncActivity(
-        recentCompletions = previewCompletions,
+        runningRelays = previewRunning,
+        completedRelays = previewCompletions,
         outboxTargets =
             listOf(
                 EventSync.LiveSyncActivity.DestinationRelayInfo(NormalizedRelayUrl("wss://outbox.nostr.com"), 1247, 891),
@@ -704,6 +712,22 @@ private val previewActivity =
 // Previews
 // -------------------------------------------------------------------------
 
+@Composable
+@Preview
+fun IdleCardWifiPreview() {
+    ThemeComparisonColumn {
+        ExplanationCard(false, {})
+    }
+}
+
+@Composable
+@Preview
+fun IdleCardMobilePreview() {
+    ThemeComparisonColumn {
+        ExplanationCard(true, {})
+    }
+}
+
 @Composable
 @Preview
 fun SyncProgressCardPreview() {
@@ -715,21 +739,7 @@ fun SyncProgressCardPreview() {
                     totalRelays = 1024,
                     eventsSent = 4821,
                 ),
-        )
+            onCancel = {},
-    }
-}
-
-@Composable
-@Preview
-fun PausedCardPreview() {
-    ThemeComparisonColumn {
-        PausedCard(
-            state =
-                EventSync.SyncState.Paused(
-                    nextRelayIndex = 260,
-                    totalRelays = 1024,
-                    eventsSent = 3200,
-                ),
         )
     }
 }
@@ -766,9 +776,23 @@ fun DestinationRelaysCardPreview() {
 }
 
 @Composable
-@Preview
+@Preview(device = "spec:width=1800px,height=2340px,dpi=440")
-fun ActivityLogCardPreview() {
+fun EventScreenBodyPreview() {
-    ThemeComparisonColumn {
+    ThemeComparisonRow {
-        ActivityLogCard(completions = previewCompletions)
+        EventScreenBody(
+            EventSync.SyncState.Idle,
+            EventSync.LiveSyncActivity(emptyList(), emptyList(), emptyList(), emptyList(), emptyList()),
+        )
+    }
+}
+
+@Composable
+@Preview(device = "spec:width=1800px,height=2340px,dpi=440")
+fun EventScreenBody2Preview() {
+    ThemeComparisonRow {
+        EventScreenBody(
+            EventSync.SyncState.Running(1247, 1024, 4821),
+            previewActivity,
+        )
     }
 }

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

@@ -1816,7 +1816,7 @@
     <string name="event_sync_section_explainer">Re-publish your events across all known relays to keep your outbox, inbox, and DM relays up to date. Requires Wi-Fi — this may use a lot of data.</string>
     <string name="event_sync_open_button">Open Relay Sync…</string>
     <string name="event_sync_what_happens_title">What this does</string>
-    <string name="event_sync_what_happens_body">This tool scans every relay your app has seen and redistributes your events to the correct destinations. It may transfer a large amount of data, so it is best run on Wi-Fi.</string>
+    <string name="event_sync_what_happens_body">This tool scans every relay your app has seen and redistributes your events to the correct destinations: </string>
     <string name="event_sync_step1">Download all events you authored and send them to your outbox relays.</string>
     <string name="event_sync_step2">Download all events that mention you and send them to your inbox relays.</string>
     <string name="event_sync_step3">Download all direct messages addressed to you and send them to your DM relays.</string>
@@ -1841,7 +1841,9 @@
     <string name="event_sync_outbox_relays">Outbox</string>
     <string name="event_sync_inbox_relays">Inbox</string>
     <string name="event_sync_dm_relays">DMs</string>
-    <string name="event_sync_activity_log">Activity (%1$d relays)</string>
+    <string name="event_sync_activity_log">Currently Checking (%1$d relays)</string>
+    <string name="event_sync_activity_log_finished">Finished (%1$d relays)</string>
+    <string name="event_sync_log_sent">sent %1$s</string>
     <string name="event_sync_log_recv">recv %1$s</string>
     <string name="event_sync_log_new">new %1$s</string>
     <string name="event_sync_no_events">no events</string>
@@ -1851,4 +1853,9 @@
     <string name="profiles">profiles</string>
     <string name="relay_settings_lower">relay settings</string>
     <string name="last_seen">Last seen %1$s ago</string>
+
+    <string name="event_sync_status_connecting">Connecting</string>
+    <string name="event_sync_status_downloading">Downloading</string>
+    <string name="event_sync_status_error">Error</string>
+    <string name="event_sync_status_completed">Completed</string>
 </resources>

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip01Core/relay/client/INostrClient.kt

@@ -31,7 +31,7 @@ import com.vitorpamplona.quartz.nip01Core.relay.normalizer.NormalizedRelayUrl
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
 
-interface INostrClient {
+interface INostrClient : AutoCloseable {
     fun connectedRelaysFlow(): StateFlow<Set<NormalizedRelayUrl>>
 
     fun availableRelaysFlow(): StateFlow<Set<NormalizedRelayUrl>>
@@ -136,4 +136,6 @@ object EmptyNostrClient : INostrClient {
     override fun activeCounts(url: NormalizedRelayUrl): Map<String, List<Filter>> = emptyMap()
 
     override fun activeOutboxCache(url: NormalizedRelayUrl): Set<HexKey> = emptySet()
+
+    override fun close() {}
 }

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip01Core/relay/client/NostrClient.kt

@@ -79,7 +79,8 @@ class NostrClient(
     private val websocketBuilder: WebsocketBuilder,
     private val scope: CoroutineScope = CoroutineScope(Dispatchers.IO + SupervisorJob()),
 ) : INostrClient,
-    IRelayClientListener {
+    IRelayClientListener,
+    AutoCloseable {
     private val relayPool: RelayPool = RelayPool(websocketBuilder, this)
 
     private val activeRequests: PoolRequests = PoolRequests()
@@ -326,4 +327,8 @@ class NostrClient(
     override fun connectedRelaysFlow() = relayPool.connectedRelays
 
     override fun availableRelaysFlow() = relayPool.availableRelays
+
+    override fun close() {
+        disconnect()
+    }
 }

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip01Core/relay/client/accessories/NostrClientReqBypassingRelayLimitsExt.kt

@@ -28,7 +28,6 @@ import com.vitorpamplona.quartz.nip01Core.relay.filters.Filter
 import com.vitorpamplona.quartz.nip01Core.relay.normalizer.NormalizedRelayUrl
 import com.vitorpamplona.quartz.nip01Core.relay.normalizer.RelayUrlNormalizer
 import kotlinx.coroutines.channels.Channel
-import kotlinx.coroutines.channels.Channel.Factory.UNLIMITED
 import kotlinx.coroutines.ensureActive
 import kotlinx.coroutines.withTimeoutOrNull
 import kotlin.coroutines.coroutineContext
@@ -63,6 +62,8 @@ suspend fun INostrClient.reqBypassingRelayLimits(
     // Track how many matching events each filter has received so far.
     val matchCountPerFilter = IntArray(filters.size)
 
+    val subId = newSubId()
+
     while (true) {
         coroutineContext.ensureActive()
 
@@ -75,9 +76,7 @@ suspend fun INostrClient.reqBypassingRelayLimits(
 
         if (remainingFilters.isEmpty()) break
 
-        val eventChannel = Channel<Event>(UNLIMITED)
         val doneChannel = Channel<Unit>(Channel.CONFLATED)
-        val subId = newSubId()
 
         val activeFilters =
             if (until == null) {
@@ -86,19 +85,37 @@ suspend fun INostrClient.reqBypassingRelayLimits(
                 remainingFilters.map { it.copy(until = until) }
             }
 
+        var pageCount = 0
+        var pageMinTs = Long.MAX_VALUE
+
         val listener =
             object : IRequestListener {
                 override fun onEvent(
                     event: Event,
                     isLive: Boolean,
-                    relay: NormalizedRelayUrl,
+                    relayInner: NormalizedRelayUrl,
                     forFilters: List<Filter>?,
                 ) {
-                    eventChannel.trySend(event)
+                    onEvent(event)
+                    pageCount++
+                    if (event.createdAt < pageMinTs) pageMinTs = event.createdAt
+
+                    // Count this event against every base filter it matches.
+                    if (matchCountPerFilter.size == 1) {
+                        // no need to run the match.
+                        matchCountPerFilter[0]++
+                    } else {
+                        for (i in filters.indices) {
+                            val limit = filters[i].limit
+                            if ((limit == null || matchCountPerFilter[i] < limit) && filters[i].match(event)) {
+                                matchCountPerFilter[i]++
+                            }
+                        }
+                    }
                 }
 
                 override fun onEose(
-                    relay: NormalizedRelayUrl,
+                    relayInner: NormalizedRelayUrl,
                     forFilters: List<Filter>?,
                 ) {
                     doneChannel.trySend(Unit)
@@ -106,49 +123,30 @@ suspend fun INostrClient.reqBypassingRelayLimits(
 
                 override fun onClosed(
                     message: String,
-                    relay: NormalizedRelayUrl,
+                    relayInner: NormalizedRelayUrl,
                     forFilters: List<Filter>?,
                 ) {
                     doneChannel.trySend(Unit)
                 }
 
                 override fun onCannotConnect(
-                    relay: NormalizedRelayUrl,
+                    relayInner: NormalizedRelayUrl,
                     message: String,
                     forFilters: List<Filter>?,
                 ) {
-                    println("AABBCC $message")
                     doneChannel.trySend(Unit)
                 }
             }
 
         openReqSubscription(subId, mapOf(relay to activeFilters), listener)
-        withTimeoutOrNull(timeoutMs) { doneChannel.receive() }
-        close(subId)
-        eventChannel.close()
-        doneChannel.close()
 
-        var pageCount = 0
+        withTimeoutOrNull(timeoutMs) {
-        var pageMinTs = Long.MAX_VALUE
+            doneChannel.receive()
-        for (event in eventChannel) {
-            onEvent(event)
-            pageCount++
-            if (event.createdAt < pageMinTs) pageMinTs = event.createdAt
-
-            // Count this event against every base filter it matches.
-            if (matchCountPerFilter.size == 1) {
-                // no need to run the match.
-                matchCountPerFilter[0]++
-            } else {
-                for (i in filters.indices) {
-                    val limit = filters[i].limit
-                    if ((limit == null || matchCountPerFilter[i] < limit) && filters[i].match(event)) {
-                        matchCountPerFilter[i]++
-                    }
-                }
-            }
         }
 
+        close(subId)
+        doneChannel.close()
+
         if (pageCount == 0) break
 
         totalEvents += pageCount

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip01Core/relay/client/accessories/NostrClientSingleDownloadExt.kt

@@ -67,7 +67,7 @@ suspend fun INostrClient.downloadFirstEvent(
     subscriptionId: String = newSubId(),
     filters: Map<NormalizedRelayUrl, List<Filter>>,
 ): Event? {
-    val resultChannel = Channel<Event>(UNLIMITED)
+    val resultChannel = Channel<Event?>(UNLIMITED)
 
     val listener =
         object : IRequestListener {
@@ -79,6 +79,29 @@ suspend fun INostrClient.downloadFirstEvent(
             ) {
                 resultChannel.trySend(event)
             }
+
+            override fun onCannotConnect(
+                relay: NormalizedRelayUrl,
+                message: String,
+                forFilters: List<Filter>?,
+            ) {
+                resultChannel.trySend(null)
+            }
+
+            override fun onClosed(
+                message: String,
+                relay: NormalizedRelayUrl,
+                forFilters: List<Filter>?,
+            ) {
+                resultChannel.trySend(null)
+            }
+
+            override fun onEose(
+                relay: NormalizedRelayUrl,
+                forFilters: List<Filter>?,
+            ) {
+                resultChannel.trySend(null)
+            }
         }
 
     openReqSubscription(subscriptionId, filters, listener)

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip01Core/relay/client/pool/PoolEventOutbox.kt

@@ -28,26 +28,63 @@ import com.vitorpamplona.quartz.nip01Core.relay.commands.toRelay.Command
 import com.vitorpamplona.quartz.nip01Core.relay.commands.toRelay.EventCmd
 import com.vitorpamplona.quartz.nip01Core.relay.normalizer.NormalizedRelayUrl
 import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.update
+import kotlin.compareTo
 
 class PoolEventOutbox {
     private var eventOutbox = mapOf<HexKey, PoolEventOutboxState>()
     val relays = MutableStateFlow(setOf<NormalizedRelayUrl>())
 
-    fun updateRelays() {
+    fun needsToUpdateRelays(): Boolean {
-        val myRelays = mutableSetOf<NormalizedRelayUrl>()
+        val currentRelays = relays.value
-        eventOutbox.values.forEach {
+
-            myRelays.addAll(it.relaysLeft())
+        var relaysToRemoveCounter = 0
+
+        currentRelays.forEach { currentRelay ->
+            if (eventOutbox.values.none { currentRelay in it.relaysRemaining }) {
+                relaysToRemoveCounter++
+            }
         }
 
-        if (relays.value != myRelays) {
+        var relaysToAddCounter = 0
-            relays.tryEmit(myRelays)
+        eventOutbox.values.forEach { outboxState ->
+            if (outboxState.relaysRemaining.any { it !in currentRelays }) {
+                relaysToAddCounter++
+            }
+        }
+
+        return relaysToRemoveCounter > 0 || relaysToAddCounter > 0
+    }
+
+    fun updateRelays() {
+        if (needsToUpdateRelays()) {
+            relays.update { currentRelays ->
+                val relaysToRemove = mutableSetOf<NormalizedRelayUrl>()
+
+                currentRelays.forEach { currentRelay ->
+                    if (eventOutbox.values.none { currentRelay in it.relaysRemaining }) {
+                        relaysToRemove.add(currentRelay)
+                    }
+                }
+
+                val relaysToAdd = mutableSetOf<NormalizedRelayUrl>()
+                eventOutbox.values.forEach { outboxState ->
+                    outboxState.relaysRemaining.forEach { relay ->
+                        if (relay !in relaysToAdd && relay !in currentRelays) {
+                            relaysToAdd.add(relay)
+                        }
+                    }
+                }
+
+                (currentRelays - relaysToRemove) + relaysToAdd
+            }
         }
     }
 
     fun activeOutboxCacheFor(url: NormalizedRelayUrl): Set<HexKey> {
         val myEvents = mutableSetOf<HexKey>()
         eventOutbox.forEach { (eventId, outboxCache) ->
-            if (url in outboxCache.relays) {
+            if (url in outboxCache.relaysRemaining) {
                 myEvents.add(eventId)
             }
         }
@@ -72,7 +109,12 @@ class PoolEventOutbox {
         id: HexKey,
         url: NormalizedRelayUrl,
     ) {
-        eventOutbox[id]?.newTry(url)
+        val waiting = eventOutbox[id]
+        waiting?.newTry(url)
+        if (waiting?.isDone() == true) {
+            eventOutbox = eventOutbox - waiting.event.id
+            updateRelays()
+        }
     }
 
     fun newResponse(
@@ -84,15 +126,13 @@ class PoolEventOutbox {
         val waiting = eventOutbox[id]
         if (waiting != null) {
             waiting.newResponse(url, success, message)
-            clear()
+            if (waiting.isDone()) {
+                eventOutbox = eventOutbox - waiting.event.id
+                updateRelays()
+            }
         }
     }
 
-    fun clear() {
-        eventOutbox = eventOutbox.filter { !it.value.isDone() }
-        updateRelays()
-    }
-
     // --------------------------
     // State management functions
     // --------------------------
@@ -143,7 +183,7 @@ class PoolEventOutbox {
         errorMessage: String,
     ) {
         eventOutbox.forEach {
-            if (relay in it.value.relays) {
+            if (relay in it.value.relaysRemaining) {
                 newResponse(it.key, relay, false, errorMessage)
             }
         }

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip01Core/relay/client/pool/PoolEventOutboxState.kt

@@ -26,35 +26,37 @@ import com.vitorpamplona.quartz.utils.TimeUtils
 
 class PoolEventOutboxState(
     val event: Event,
-    var relays: Set<NormalizedRelayUrl>,
+    var relaysRemaining: Set<NormalizedRelayUrl>,
 ) {
-    private var tries = mapOf<NormalizedRelayUrl, Tries>()
+    private var failures = mapOf<NormalizedRelayUrl, Tries>()
 
     fun updateRelays(newRelays: Set<NormalizedRelayUrl>) {
-        relays = newRelays
+        relaysRemaining = newRelays
     }
 
-    fun isDone(url: NormalizedRelayUrl) = tries[url]?.isDone() ?: false
+    fun isDone() = relaysRemaining.isEmpty()
 
-    fun isDone() = relays.all { isDone(it) }
+    fun relaysLeft(): Set<NormalizedRelayUrl> = relaysRemaining
 
-    fun relaysLeft(): Set<NormalizedRelayUrl> = relays.filterTo(mutableSetOf()) { !isDone(it) }
+    fun isSupposedToGo(url: NormalizedRelayUrl) = url in relaysRemaining
-
-    fun isSupposedToGo(url: NormalizedRelayUrl) = url in relays && !isDone(url)
 
     fun forEachUnsentEvent(
         url: NormalizedRelayUrl,
         run: (url: Event) -> Unit,
     ) = if (isSupposedToGo(url)) run(event) else null
 
-    fun remainingRelays() = relays.filterTo(mutableSetOf(), ::isSupposedToGo)
+    fun remainingRelays() = relaysRemaining
 
     fun newTry(url: NormalizedRelayUrl) {
-        val currentTries = tries[url]
+        val currentTries = failures[url]
         if (currentTries != null) {
             currentTries.addTriedTime(TimeUtils.now())
+            if (currentTries.isDone()) {
+                relaysRemaining = relaysRemaining - url
+                failures = failures - url
+            }
         } else {
-            tries = tries + (url to Tries(listOf(TimeUtils.now())))
+            failures = failures + (url to Tries(listOf(TimeUtils.now())))
         }
     }
 
@@ -63,38 +65,44 @@ class PoolEventOutboxState(
         success: Boolean,
         message: String,
     ) {
-        val currentTries = tries[url]
+        val currentTries = failures[url]
-        if (currentTries != null) {
+        if (success || message.shouldDiscard()) {
-            currentTries.addResponse(Response(success, message))
+            relaysRemaining = relaysRemaining - url
+            failures = failures - url
         } else {
-            tries = tries + (
+            if (currentTries != null) {
-                url to
+                currentTries.addResponse(message)
-                    Tries(
+            } else {
-                        listOf(TimeUtils.now() - 1),
+                failures = failures + (
-                        listOf(Response(success, message)),
+                    url to
-                    )
+                        Tries(
-            )
+                            listOf(TimeUtils.now() - 1),
+                            listOf(message),
+                        )
+                )
+            }
         }
     }
 
+    fun String.shouldDiscard() =
+        this.startsWith("replaced:") ||
+            this.startsWith("pow:") ||
+            this.startsWith("deleted:") ||
+            this.startsWith("invalid:")
+
     // Tries 3 times
     class Tries(
         var tries: List<Long> = listOf(),
-        var responses: List<Response> = listOf(),
+        var responses: List<String> = listOf(),
     ) {
-        fun isDone() = responses.any { it.success } || responses.size > 2 || tries.size > 3
+        fun isDone() = responses.size > 2 || tries.size > 3
 
-        fun addResponse(r: Response) {
+        fun addResponse(msg: String) {
-            responses += r
+            responses += msg
         }
 
         fun addTriedTime(tried: Long) {
             tries += tried
         }
     }
-
-    class Response(
-        val success: Boolean,
-        val message: String,
-    )
 }

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip01Core/relay/client/stats/RelayStats.kt

@@ -42,6 +42,8 @@ class RelayStats(
             override fun create(key: NormalizedRelayUrl): RelayStat = RelayStat()
         }
 
+    fun snapshot(): Map<NormalizedRelayUrl, RelayStat> = innerCache.snapshot()
+
     fun get(url: NormalizedRelayUrl): RelayStat = innerCache[url] ?: throw IllegalArgumentException("Should never happen")
 
     private val clientListener =

quartz/src/commonTest/kotlin/com/vitorpamplona/quartz/nip46RemoteSigner/signer/NostrSignerRemoteIsolationTest.kt

@@ -101,6 +101,8 @@ private class TrackingNostrClient : INostrClient {
     override fun activeCounts(url: NormalizedRelayUrl): Map<String, List<Filter>> = emptyMap()
 
     override fun activeOutboxCache(url: NormalizedRelayUrl): Set<String> = emptySet()
+
+    override fun close() {}
 }
 
 /**