Merge pull request #2489 from vitorpamplona/claude/configurable-bottom-nav-rFdQw

Add customizable bottom navigation bar with drag-to-reorder UI

amethyst/src/main/java/com/vitorpamplona/amethyst/model/UiSettings.kt

@@ -22,6 +22,8 @@ package com.vitorpamplona.amethyst.model
 
 import androidx.compose.runtime.Stable
 import com.vitorpamplona.amethyst.R
+import com.vitorpamplona.amethyst.ui.navigation.bottombars.DefaultBottomBarItems
+import com.vitorpamplona.amethyst.ui.navigation.bottombars.NavBarItem
 import kotlinx.serialization.Serializable
 
 @Stable
@@ -40,6 +42,7 @@ data class UiSettings(
     val featureSet: FeatureSetType = FeatureSetType.SIMPLIFIED,
     val gallerySet: ProfileGalleryType = ProfileGalleryType.CLASSIC,
     val automaticallyProposeAiImprovements: BooleanType = BooleanType.ALWAYS,
+    val bottomBarItems: List<NavBarItem> = DefaultBottomBarItems,
 )
 
 enum class ThemeType(

amethyst/src/main/java/com/vitorpamplona/amethyst/model/UiSettingsFlow.kt

@@ -21,6 +21,8 @@
 package com.vitorpamplona.amethyst.model
 
 import androidx.compose.runtime.Stable
+import com.vitorpamplona.amethyst.ui.navigation.bottombars.DefaultBottomBarItems
+import com.vitorpamplona.amethyst.ui.navigation.bottombars.NavBarItem
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.combine
@@ -40,6 +42,7 @@ class UiSettingsFlow(
     val featureSet: MutableStateFlow<FeatureSetType> = MutableStateFlow(FeatureSetType.SIMPLIFIED),
     val gallerySet: MutableStateFlow<ProfileGalleryType> = MutableStateFlow(ProfileGalleryType.CLASSIC),
     val automaticallyProposeAiImprovements: MutableStateFlow<BooleanType> = MutableStateFlow(BooleanType.ALWAYS),
+    val bottomBarItems: MutableStateFlow<List<NavBarItem>> = MutableStateFlow(DefaultBottomBarItems),
 ) {
     val listOfFlows: List<Flow<Any?>> =
         listOf<Flow<Any?>>(
@@ -56,9 +59,11 @@ class UiSettingsFlow(
             featureSet,
             gallerySet,
             automaticallyProposeAiImprovements,
+            bottomBarItems,
         )
 
     // emits at every change in any of the propertyes.
+    @Suppress("UNCHECKED_CAST")
     val propertyWatchFlow: Flow<UiSettings> =
         combine<Any?, UiSettings>(listOfFlows) { flows: Array<Any?> ->
             UiSettings(
@@ -75,6 +80,7 @@ class UiSettingsFlow(
                 flows[10] as FeatureSetType,
                 flows[11] as ProfileGalleryType,
                 flows[12] as BooleanType,
+                flows[13] as List<NavBarItem>,
             )
         }
 
@@ -93,6 +99,7 @@ class UiSettingsFlow(
             featureSet.value,
             gallerySet.value,
             automaticallyProposeAiImprovements.value,
+            bottomBarItems.value,
         )
 
     fun update(torSettings: UiSettings): Boolean {
@@ -150,6 +157,10 @@ class UiSettingsFlow(
             automaticallyProposeAiImprovements.tryEmit(torSettings.automaticallyProposeAiImprovements)
             any = true
         }
+        if (bottomBarItems.value != torSettings.bottomBarItems) {
+            bottomBarItems.tryEmit(torSettings.bottomBarItems)
+            any = true
+        }
 
         return any
     }
@@ -182,6 +193,7 @@ class UiSettingsFlow(
                 MutableStateFlow(uiSettings.featureSet),
                 MutableStateFlow(uiSettings.gallerySet),
                 MutableStateFlow(uiSettings.automaticallyProposeAiImprovements),
+                MutableStateFlow(uiSettings.bottomBarItems),
             )
     }
 }

amethyst/src/main/java/com/vitorpamplona/amethyst/model/preferences/UISharedPreferences.kt

@@ -38,6 +38,8 @@ import com.vitorpamplona.amethyst.model.ProfileGalleryType
 import com.vitorpamplona.amethyst.model.ThemeType
 import com.vitorpamplona.amethyst.model.UiSettings
 import com.vitorpamplona.amethyst.model.UiSettingsFlow
+import com.vitorpamplona.amethyst.ui.navigation.bottombars.DefaultBottomBarItems
+import com.vitorpamplona.amethyst.ui.navigation.bottombars.NavBarItem
 import com.vitorpamplona.quartz.utils.Log
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
@@ -104,6 +106,7 @@ class UiSharedPreferences(
         val UI_FEATURE_SET = stringPreferencesKey("ui.feature_set")
         val UI_GALLERY_SET = stringPreferencesKey("ui.gallery_set")
         val UI_PROPOSE_AI_IMPROVEMENTS = stringPreferencesKey("ui.propose_ai_improvements")
+        val UI_BOTTOM_BAR_ITEMS = stringPreferencesKey("ui.bottom_bar_items")
 
         suspend fun uiPreferences(context: Context): UiSettings? =
             try {
@@ -124,6 +127,7 @@ class UiSharedPreferences(
                     featureSet = preferences[UI_FEATURE_SET]?.let { FeatureSetType.valueOf(it) } ?: FeatureSetType.SIMPLIFIED,
                     gallerySet = preferences[UI_GALLERY_SET]?.let { ProfileGalleryType.valueOf(it) } ?: ProfileGalleryType.CLASSIC,
                     automaticallyProposeAiImprovements = preferences[UI_PROPOSE_AI_IMPROVEMENTS]?.let { BooleanType.valueOf(it) } ?: BooleanType.ALWAYS,
+                    bottomBarItems = preferences[UI_BOTTOM_BAR_ITEMS]?.let { decodeBottomBarItems(it) } ?: DefaultBottomBarItems,
                 )
             } catch (e: Exception) {
                 if (e is CancellationException) throw e
@@ -161,6 +165,7 @@ class UiSharedPreferences(
                     preferences[UI_FEATURE_SET] = sharedSettings.featureSet.name
                     preferences[UI_GALLERY_SET] = sharedSettings.gallerySet.name
                     preferences[UI_PROPOSE_AI_IMPROVEMENTS] = sharedSettings.automaticallyProposeAiImprovements.name
+                    preferences[UI_BOTTOM_BAR_ITEMS] = sharedSettings.bottomBarItems.joinToString(",") { it.name }
                 }
             } catch (e: Exception) {
                 if (e is CancellationException) throw e
@@ -168,5 +173,18 @@ class UiSharedPreferences(
                 Log.e("SharedPreferences") { "Error saving DataStore preferences: ${e.message}" }
             }
         }
+
+        private fun decodeBottomBarItems(raw: String): List<NavBarItem> {
+            if (raw.isEmpty()) return emptyList()
+            return raw
+                .split(",")
+                .mapNotNull { name ->
+                    try {
+                        NavBarItem.valueOf(name)
+                    } catch (_: IllegalArgumentException) {
+                        null
+                    }
+                }
+        }
     }
 }

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

@@ -154,6 +154,7 @@ import com.vitorpamplona.amethyst.ui.screen.loggedIn.relays.vanish.RequestToVani
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.relays.vanish.VanishEventsScreen
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.search.SearchScreen
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.settings.AllSettingsScreen
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.settings.BottomBarSettingsScreen
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.settings.CallSettingsScreen
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.settings.NIP47SetupScreen
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.settings.NamecoinSettingsScreen
@@ -303,6 +304,7 @@ fun BuildNavigation(
         composableFromEnd<Route.Settings> { SettingsScreen(accountViewModel, nav) }
         composableFromEnd<Route.UserSettings> { UserSettingsScreen(accountViewModel, nav) }
         composableFromEnd<Route.ReactionsSettings> { ReactionsSettingsScreen(accountViewModel, nav) }
+        composableFromEnd<Route.BottomBarSettings> { BottomBarSettingsScreen(accountViewModel, nav) }
         composableFromEnd<Route.CallSettings> { CallSettingsScreen(accountViewModel, nav) }
         composableFromEnd<Route.ImportFollowsSelectUser> { ImportFollowListSelectUserScreen(accountViewModel, nav) }
         composableFromEndArgs<Route.ImportFollowsPickFollows> {

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

@@ -25,9 +25,11 @@ import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.RowScope
+import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.consumeWindowInsets
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.layout.windowInsetsPadding
 import androidx.compose.material3.BottomAppBarDefaults.windowInsets
 import androidx.compose.material3.HorizontalDivider
@@ -37,6 +39,7 @@ import androidx.compose.material3.NavigationBar
 import androidx.compose.material3.NavigationBarItem
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
@@ -49,6 +52,8 @@ import com.vitorpamplona.amethyst.ui.stringRes
 import com.vitorpamplona.amethyst.ui.theme.DividerThickness
 import com.vitorpamplona.amethyst.ui.theme.Size0dp
 import com.vitorpamplona.amethyst.ui.theme.Size10Modifier
+import com.vitorpamplona.amethyst.ui.theme.Size20dp
+import com.vitorpamplona.amethyst.ui.theme.Size23dp
 
 @Composable
 fun AppBottomBar(
@@ -56,18 +61,33 @@ fun AppBottomBar(
     accountViewModel: AccountViewModel,
     nav: (Route) -> Unit,
 ) {
+    val items by accountViewModel.settings.uiSettingsFlow.bottomBarItems
+        .collectAsStateWithLifecycle()
+    if (items.isEmpty()) {
+        Spacer(
+            modifier =
+                Modifier
+                    .fillMaxWidth()
+                    .windowInsetsPadding(windowInsets)
+                    .consumeWindowInsets(windowInsets),
+        )
+        return
+    }
     val isKeyboardState by keyboardAsState()
     if (isKeyboardState == KeyboardState.Closed) {
-        RenderBottomMenu(selectedRoute, accountViewModel, nav)
+        RenderBottomMenu(items, selectedRoute, accountViewModel, nav)
     }
 }
 
 @Composable
 private fun RenderBottomMenu(
+    items: List<NavBarItem>,
     selectedRoute: Route?,
     accountViewModel: AccountViewModel,
     nav: (Route) -> Unit,
 ) {
+    val defs = remember(items) { items.mapNotNull(NavBarCatalog::get) }
+
     Column(
         modifier =
             Modifier
@@ -84,8 +104,9 @@ private fun RenderBottomMenu(
             containerColor = MaterialTheme.colorScheme.background,
             tonalElevation = Size0dp,
         ) {
-            bottomNavigationItems.forEach { item ->
+            defs.forEach { def ->
-                HasNewItemsIcon(item.route == selectedRoute, item, accountViewModel, nav)
+                val destination = remember(def, accountViewModel) { def.resolveRoute(accountViewModel) }
+                HasNewItemsIcon(destination == selectedRoute, def, destination, accountViewModel, nav)
             }
         }
     }
@@ -94,7 +115,8 @@ private fun RenderBottomMenu(
 @Composable
 private fun RowScope.HasNewItemsIcon(
     selected: Boolean,
-    bottomNav: BottomBarRoute,
+    def: NavBarItemDef,
+    destination: Route,
     accountViewModel: AccountViewModel,
     nav: (Route) -> Unit,
 ) {
@@ -103,30 +125,48 @@ private fun RowScope.HasNewItemsIcon(
         icon = {
             NotifiableIcon(
                 selected,
-                bottomNav,
+                def,
+                destination,
                 accountViewModel,
             )
         },
         selected = selected,
-        onClick = { nav(bottomNav.route) },
+        onClick = { nav(destination) },
     )
 }
 
 @Composable
 private fun NotifiableIcon(
     selected: Boolean,
-    route: BottomBarRoute,
+    def: NavBarItemDef,
+    destination: Route,
     accountViewModel: AccountViewModel,
 ) {
-    Box(route.notifSize) {
+    Box(Modifier.size(Size23dp)) {
+        val tint = if (selected) MaterialTheme.colorScheme.primary else Color.Unspecified
+        val iconSizeModifier = Modifier.size(Size20dp)
+        val description = stringRes(def.labelRes)
+        when (val icon = def.icon) {
+            is NavBarIcon.Drawable -> {
                 Icon(
-            painter = painterRes(resourceId = route.icon, 0),
+                    painter = painterRes(resourceId = icon.resId, icon.reference),
-            contentDescription = stringRes(route.contentDescriptor),
+                    contentDescription = description,
-            modifier = route.iconSize,
+                    modifier = iconSizeModifier,
-            tint = if (selected) MaterialTheme.colorScheme.primary else Color.Unspecified,
+                    tint = tint,
                 )
+            }
 
-        AddNotifIconIfNeeded(route.route, accountViewModel, Modifier.align(Alignment.TopEnd))
+            is NavBarIcon.Vector -> {
+                Icon(
+                    imageVector = icon.vector,
+                    contentDescription = description,
+                    modifier = iconSizeModifier,
+                    tint = tint,
+                )
+            }
+        }
+
+        AddNotifIconIfNeeded(destination, accountViewModel, Modifier.align(Alignment.TopEnd))
     }
 }
 

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/navigation/bottombars/BottomBarRoutes.kt

@@ -1,48 +0,0 @@
-/*
- * 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.navigation.bottombars
-
-import androidx.compose.foundation.layout.size
-import androidx.compose.ui.Modifier
-import com.vitorpamplona.amethyst.R
-import com.vitorpamplona.amethyst.ui.navigation.routes.Route
-import com.vitorpamplona.amethyst.ui.theme.Size20dp
-import com.vitorpamplona.amethyst.ui.theme.Size23dp
-import com.vitorpamplona.amethyst.ui.theme.Size24dp
-import com.vitorpamplona.amethyst.ui.theme.Size25dp
-import kotlinx.collections.immutable.persistentListOf
-
-class BottomBarRoute(
-    val route: Route,
-    val icon: Int,
-    val contentDescriptor: Int,
-    val notifSize: Modifier = Modifier.size(Size23dp),
-    val iconSize: Modifier = Modifier.size(Size20dp),
-)
-
-val bottomNavigationItems =
-    persistentListOf(
-        BottomBarRoute(Route.Home, R.drawable.ic_home, R.string.route_home, Modifier.size(Size25dp), Modifier.size(Size24dp)),
-        BottomBarRoute(Route.Message, R.drawable.ic_dm, R.string.route_messages),
-        BottomBarRoute(Route.Video, R.drawable.ic_video, R.string.route_video),
-        BottomBarRoute(Route.Discover, R.drawable.ic_sensors, R.string.route_discover),
-        BottomBarRoute(Route.Notification(), R.drawable.ic_notifications, R.string.route_notifications),
-    )

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/navigation/bottombars/NavBarItem.kt

@@ -0,0 +1,334 @@
+/*
+ * 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.navigation.bottombars
+
+import androidx.annotation.DrawableRes
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.automirrored.filled.FormatListBulleted
+import androidx.compose.material.icons.automirrored.outlined.Article
+import androidx.compose.material.icons.automirrored.outlined.Chat
+import androidx.compose.material.icons.filled.AccountCircle
+import androidx.compose.material.icons.outlined.AccountBalanceWallet
+import androidx.compose.material.icons.outlined.CollectionsBookmark
+import androidx.compose.material.icons.outlined.Drafts
+import androidx.compose.material.icons.outlined.EmojiEmotions
+import androidx.compose.material.icons.outlined.Groups
+import androidx.compose.material.icons.outlined.Language
+import androidx.compose.material.icons.outlined.MilitaryTech
+import androidx.compose.material.icons.outlined.Photo
+import androidx.compose.material.icons.outlined.PlayCircle
+import androidx.compose.material.icons.outlined.Sensors
+import androidx.compose.material.icons.outlined.Settings
+import androidx.compose.material.icons.outlined.SmartDisplay
+import androidx.compose.material.icons.outlined.Storefront
+import androidx.compose.material.icons.outlined.Tag
+import androidx.compose.ui.graphics.vector.ImageVector
+import com.vitorpamplona.amethyst.R
+import com.vitorpamplona.amethyst.ui.navigation.routes.Route
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+import kotlinx.serialization.Serializable
+
+/**
+ * Stable identifiers for every drawer destination that the user can pin to the bottom bar.
+ * Order in this enum has no semantic meaning — the user picks a subset and an order at runtime.
+ */
+@Serializable
+enum class NavBarItem {
+    HOME,
+    MESSAGES,
+    VIDEO,
+    DISCOVER,
+    NOTIFICATIONS,
+    PROFILE,
+    MY_LISTS,
+    BOOKMARKS,
+    WEB_BOOKMARKS,
+    DRAFTS,
+    INTEREST_SETS,
+    EMOJI_PACKS,
+    WALLET,
+    COMMUNITIES,
+    ARTICLES,
+    PICTURES,
+    SHORTS,
+    PUBLIC_CHATS,
+    FOLLOW_PACKS,
+    LIVE_STREAMS,
+    LONGS,
+    POLLS,
+    BADGES,
+    PRODUCTS,
+    EMOJI_SETS,
+    SETTINGS,
+}
+
+sealed class NavBarIcon {
+    data class Drawable(
+        @DrawableRes val resId: Int,
+        val reference: Int = 0,
+    ) : NavBarIcon()
+
+    data class Vector(
+        val vector: ImageVector,
+    ) : NavBarIcon()
+}
+
+data class NavBarItemDef(
+    val id: NavBarItem,
+    val labelRes: Int,
+    val icon: NavBarIcon,
+    val resolveRoute: (AccountViewModel) -> Route,
+)
+
+val NavBarCatalog: Map<NavBarItem, NavBarItemDef> =
+    linkedMapOf(
+        NavBarItem.HOME to
+            NavBarItemDef(
+                id = NavBarItem.HOME,
+                labelRes = R.string.route_home,
+                icon = NavBarIcon.Drawable(R.drawable.ic_home),
+                resolveRoute = { Route.Home },
+            ),
+        NavBarItem.MESSAGES to
+            NavBarItemDef(
+                id = NavBarItem.MESSAGES,
+                labelRes = R.string.route_messages,
+                icon = NavBarIcon.Drawable(R.drawable.ic_dm),
+                resolveRoute = { Route.Message },
+            ),
+        NavBarItem.VIDEO to
+            NavBarItemDef(
+                id = NavBarItem.VIDEO,
+                labelRes = R.string.route_video,
+                icon = NavBarIcon.Drawable(R.drawable.ic_video),
+                resolveRoute = { Route.Video },
+            ),
+        NavBarItem.DISCOVER to
+            NavBarItemDef(
+                id = NavBarItem.DISCOVER,
+                labelRes = R.string.route_discover,
+                icon = NavBarIcon.Drawable(R.drawable.ic_sensors),
+                resolveRoute = { Route.Discover },
+            ),
+        NavBarItem.NOTIFICATIONS to
+            NavBarItemDef(
+                id = NavBarItem.NOTIFICATIONS,
+                labelRes = R.string.route_notifications,
+                icon = NavBarIcon.Drawable(R.drawable.ic_notifications),
+                resolveRoute = { Route.Notification() },
+            ),
+        NavBarItem.PROFILE to
+            NavBarItemDef(
+                id = NavBarItem.PROFILE,
+                labelRes = R.string.profile,
+                icon = NavBarIcon.Vector(Icons.Default.AccountCircle),
+                resolveRoute = { Route.Profile(it.userProfile().pubkeyHex) },
+            ),
+        NavBarItem.MY_LISTS to
+            NavBarItemDef(
+                id = NavBarItem.MY_LISTS,
+                labelRes = R.string.my_lists,
+                icon = NavBarIcon.Vector(Icons.AutoMirrored.Filled.FormatListBulleted),
+                resolveRoute = { Route.Lists },
+            ),
+        NavBarItem.BOOKMARKS to
+            NavBarItemDef(
+                id = NavBarItem.BOOKMARKS,
+                labelRes = R.string.bookmarks,
+                icon = NavBarIcon.Vector(Icons.Outlined.CollectionsBookmark),
+                resolveRoute = { Route.BookmarkGroups },
+            ),
+        NavBarItem.WEB_BOOKMARKS to
+            NavBarItemDef(
+                id = NavBarItem.WEB_BOOKMARKS,
+                labelRes = R.string.web_bookmarks,
+                icon = NavBarIcon.Vector(Icons.Outlined.Language),
+                resolveRoute = { Route.WebBookmarks },
+            ),
+        NavBarItem.DRAFTS to
+            NavBarItemDef(
+                id = NavBarItem.DRAFTS,
+                labelRes = R.string.drafts,
+                icon = NavBarIcon.Vector(Icons.Outlined.Drafts),
+                resolveRoute = { Route.Drafts },
+            ),
+        NavBarItem.INTEREST_SETS to
+            NavBarItemDef(
+                id = NavBarItem.INTEREST_SETS,
+                labelRes = R.string.interest_sets_title,
+                icon = NavBarIcon.Vector(Icons.Outlined.Tag),
+                resolveRoute = { Route.InterestSets },
+            ),
+        NavBarItem.EMOJI_PACKS to
+            NavBarItemDef(
+                id = NavBarItem.EMOJI_PACKS,
+                labelRes = R.string.manage_emoji_packs,
+                icon = NavBarIcon.Vector(Icons.Outlined.EmojiEmotions),
+                resolveRoute = { Route.EmojiPacks },
+            ),
+        NavBarItem.WALLET to
+            NavBarItemDef(
+                id = NavBarItem.WALLET,
+                labelRes = R.string.wallet,
+                icon = NavBarIcon.Vector(Icons.Outlined.AccountBalanceWallet),
+                resolveRoute = { Route.Wallet },
+            ),
+        NavBarItem.COMMUNITIES to
+            NavBarItemDef(
+                id = NavBarItem.COMMUNITIES,
+                labelRes = R.string.communities,
+                icon = NavBarIcon.Vector(Icons.Outlined.Groups),
+                resolveRoute = { Route.Communities },
+            ),
+        NavBarItem.ARTICLES to
+            NavBarItemDef(
+                id = NavBarItem.ARTICLES,
+                labelRes = R.string.discover_reads,
+                icon = NavBarIcon.Vector(Icons.AutoMirrored.Outlined.Article),
+                resolveRoute = { Route.Articles },
+            ),
+        NavBarItem.PICTURES to
+            NavBarItemDef(
+                id = NavBarItem.PICTURES,
+                labelRes = R.string.pictures,
+                icon = NavBarIcon.Vector(Icons.Outlined.Photo),
+                resolveRoute = { Route.Pictures },
+            ),
+        NavBarItem.SHORTS to
+            NavBarItemDef(
+                id = NavBarItem.SHORTS,
+                labelRes = R.string.shorts,
+                icon = NavBarIcon.Vector(Icons.Outlined.PlayCircle),
+                resolveRoute = { Route.Shorts },
+            ),
+        NavBarItem.PUBLIC_CHATS to
+            NavBarItemDef(
+                id = NavBarItem.PUBLIC_CHATS,
+                labelRes = R.string.public_chats,
+                icon = NavBarIcon.Vector(Icons.AutoMirrored.Outlined.Chat),
+                resolveRoute = { Route.PublicChats },
+            ),
+        NavBarItem.FOLLOW_PACKS to
+            NavBarItemDef(
+                id = NavBarItem.FOLLOW_PACKS,
+                labelRes = R.string.follow_packs,
+                icon = NavBarIcon.Vector(Icons.Outlined.CollectionsBookmark),
+                resolveRoute = { Route.FollowPacks },
+            ),
+        NavBarItem.LIVE_STREAMS to
+            NavBarItemDef(
+                id = NavBarItem.LIVE_STREAMS,
+                labelRes = R.string.live_streams,
+                icon = NavBarIcon.Vector(Icons.Outlined.Sensors),
+                resolveRoute = { Route.LiveStreams },
+            ),
+        NavBarItem.LONGS to
+            NavBarItemDef(
+                id = NavBarItem.LONGS,
+                labelRes = R.string.longs,
+                icon = NavBarIcon.Vector(Icons.Outlined.SmartDisplay),
+                resolveRoute = { Route.Longs },
+            ),
+        NavBarItem.POLLS to
+            NavBarItemDef(
+                id = NavBarItem.POLLS,
+                labelRes = R.string.polls,
+                icon = NavBarIcon.Drawable(R.drawable.ic_poll, reference = 1),
+                resolveRoute = { Route.Polls },
+            ),
+        NavBarItem.BADGES to
+            NavBarItemDef(
+                id = NavBarItem.BADGES,
+                labelRes = R.string.badges,
+                icon = NavBarIcon.Vector(Icons.Outlined.MilitaryTech),
+                resolveRoute = { Route.Badges },
+            ),
+        NavBarItem.PRODUCTS to
+            NavBarItemDef(
+                id = NavBarItem.PRODUCTS,
+                labelRes = R.string.discover_marketplace,
+                icon = NavBarIcon.Vector(Icons.Outlined.Storefront),
+                resolveRoute = { Route.Products },
+            ),
+        NavBarItem.EMOJI_SETS to
+            NavBarItemDef(
+                id = NavBarItem.EMOJI_SETS,
+                labelRes = R.string.emoji_sets,
+                icon = NavBarIcon.Vector(Icons.Outlined.EmojiEmotions),
+                resolveRoute = { Route.BrowseEmojiSets },
+            ),
+        NavBarItem.SETTINGS to
+            NavBarItemDef(
+                id = NavBarItem.SETTINGS,
+                labelRes = R.string.settings,
+                icon = NavBarIcon.Vector(Icons.Outlined.Settings),
+                resolveRoute = { Route.AllSettings },
+            ),
+    )
+
+val DefaultBottomBarItems: List<NavBarItem> =
+    listOf(
+        NavBarItem.HOME,
+        NavBarItem.MESSAGES,
+        NavBarItem.VIDEO,
+        NavBarItem.DISCOVER,
+        NavBarItem.NOTIFICATIONS,
+    )
+
+// Ordered membership lists for each drawer section. The drawer renders these by looking up
+// each id in NavBarCatalog, so adding a new screen only requires editing the catalog + the
+// matching section list below — not two separate files.
+val DrawerNavigateItems: List<NavBarItem> =
+    listOf(
+        NavBarItem.HOME,
+        NavBarItem.MESSAGES,
+        NavBarItem.VIDEO,
+        NavBarItem.DISCOVER,
+        NavBarItem.NOTIFICATIONS,
+    )
+
+val DrawerYouItems: List<NavBarItem> =
+    listOf(
+        NavBarItem.PROFILE,
+        NavBarItem.MY_LISTS,
+        NavBarItem.BOOKMARKS,
+        NavBarItem.WEB_BOOKMARKS,
+        NavBarItem.DRAFTS,
+        NavBarItem.INTEREST_SETS,
+        NavBarItem.EMOJI_PACKS,
+        NavBarItem.WALLET,
+    )
+
+val DrawerFeedsItems: List<NavBarItem> =
+    listOf(
+        NavBarItem.COMMUNITIES,
+        NavBarItem.ARTICLES,
+        NavBarItem.PICTURES,
+        NavBarItem.SHORTS,
+        NavBarItem.PUBLIC_CHATS,
+        NavBarItem.FOLLOW_PACKS,
+        NavBarItem.LIVE_STREAMS,
+        NavBarItem.LONGS,
+        NavBarItem.POLLS,
+        NavBarItem.BADGES,
+        NavBarItem.PRODUCTS,
+        NavBarItem.EMOJI_SETS,
+    )

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/navigation/drawer/DrawerContent.kt

@@ -50,30 +50,17 @@ import androidx.compose.foundation.text.KeyboardActions
 import androidx.compose.foundation.text.KeyboardOptions
 import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.automirrored.filled.FormatListBulleted
 import androidx.compose.material.icons.automirrored.filled.Send
-import androidx.compose.material.icons.automirrored.outlined.Article
-import androidx.compose.material.icons.automirrored.outlined.Chat
 import androidx.compose.material.icons.filled.AccountCircle
 import androidx.compose.material.icons.filled.Delete
-import androidx.compose.material.icons.outlined.AccountBalanceWallet
 import androidx.compose.material.icons.outlined.CollectionsBookmark
 import androidx.compose.material.icons.outlined.Drafts
-import androidx.compose.material.icons.outlined.EmojiEmotions
 import androidx.compose.material.icons.outlined.ExpandLess
 import androidx.compose.material.icons.outlined.ExpandMore
 import androidx.compose.material.icons.outlined.GroupAdd
-import androidx.compose.material.icons.outlined.Groups
-import androidx.compose.material.icons.outlined.Language
-import androidx.compose.material.icons.outlined.MilitaryTech
 import androidx.compose.material.icons.outlined.Photo
-import androidx.compose.material.icons.outlined.PlayCircle
-import androidx.compose.material.icons.outlined.Sensors
-import androidx.compose.material.icons.outlined.Settings
 import androidx.compose.material.icons.outlined.SettingsInputAntenna
 import androidx.compose.material.icons.outlined.SmartDisplay
-import androidx.compose.material.icons.outlined.Storefront
-import androidx.compose.material.icons.outlined.Tag
 import androidx.compose.material3.HorizontalDivider
 import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
@@ -122,6 +109,13 @@ import com.vitorpamplona.amethyst.service.relayClient.reqCommand.user.observeUse
 import com.vitorpamplona.amethyst.service.relayClient.reqCommand.user.observeUserStatuses
 import com.vitorpamplona.amethyst.ui.components.CreateTextWithEmoji
 import com.vitorpamplona.amethyst.ui.components.RobohashFallbackAsyncImage
+import com.vitorpamplona.amethyst.ui.navigation.bottombars.DrawerFeedsItems
+import com.vitorpamplona.amethyst.ui.navigation.bottombars.DrawerNavigateItems
+import com.vitorpamplona.amethyst.ui.navigation.bottombars.DrawerYouItems
+import com.vitorpamplona.amethyst.ui.navigation.bottombars.NavBarCatalog
+import com.vitorpamplona.amethyst.ui.navigation.bottombars.NavBarIcon
+import com.vitorpamplona.amethyst.ui.navigation.bottombars.NavBarItem
+import com.vitorpamplona.amethyst.ui.navigation.bottombars.NavBarItemDef
 import com.vitorpamplona.amethyst.ui.navigation.navs.EmptyNav
 import com.vitorpamplona.amethyst.ui.navigation.navs.INav
 import com.vitorpamplona.amethyst.ui.navigation.routes.Route
@@ -549,172 +543,9 @@ fun ListContent(
     nav: INav,
 ) {
     Column(modifier) {
-        CollapsibleSection(title = R.string.drawer_section_you) {
+        CatalogSection(R.string.drawer_section_navigate, DrawerNavigateItems, accountViewModel, nav)
-            NavigationRow(
+        CatalogSection(R.string.drawer_section_you, DrawerYouItems, accountViewModel, nav)
-                title = R.string.profile,
+        CatalogSection(R.string.drawer_section_feeds, DrawerFeedsItems, accountViewModel, nav)
-                icon = Icons.Default.AccountCircle,
-                tint = MaterialTheme.colorScheme.primary,
-                nav = nav,
-                computeRoute = {
-                    Route.Profile(accountViewModel.userProfile().pubkeyHex)
-                },
-            )
-
-            NavigationRow(
-                title = R.string.my_lists,
-                icon = Icons.AutoMirrored.Filled.FormatListBulleted,
-                tint = MaterialTheme.colorScheme.onBackground,
-                nav = nav,
-                route = Route.Lists,
-            )
-
-            NavigationRow(
-                title = R.string.bookmarks,
-                icon = Icons.Outlined.CollectionsBookmark,
-                tint = MaterialTheme.colorScheme.onBackground,
-                nav = nav,
-                route = Route.BookmarkGroups,
-            )
-
-            NavigationRow(
-                title = R.string.web_bookmarks,
-                icon = Icons.Outlined.Language,
-                tint = MaterialTheme.colorScheme.onBackground,
-                nav = nav,
-                route = Route.WebBookmarks,
-            )
-
-            NavigationRow(
-                title = R.string.drafts,
-                icon = Icons.Outlined.Drafts,
-                tint = MaterialTheme.colorScheme.onBackground,
-                nav = nav,
-                route = Route.Drafts,
-            )
-
-            NavigationRow(
-                title = R.string.interest_sets_title,
-                icon = Icons.Outlined.Tag,
-                tint = MaterialTheme.colorScheme.onBackground,
-                nav = nav,
-                route = Route.InterestSets,
-            )
-
-            NavigationRow(
-                title = R.string.manage_emoji_packs,
-                icon = Icons.Outlined.EmojiEmotions,
-                tint = MaterialTheme.colorScheme.onBackground,
-                nav = nav,
-                route = Route.EmojiPacks,
-            )
-
-            NavigationRow(
-                title = R.string.wallet,
-                icon = Icons.Outlined.AccountBalanceWallet,
-                tint = MaterialTheme.colorScheme.onBackground,
-                nav = nav,
-                route = Route.Wallet,
-            )
-        }
-
-        CollapsibleSection(title = R.string.drawer_section_feeds) {
-            NavigationRow(
-                title = R.string.communities,
-                icon = Icons.Outlined.Groups,
-                tint = MaterialTheme.colorScheme.onBackground,
-                nav = nav,
-                route = Route.Communities,
-            )
-
-            NavigationRow(
-                title = R.string.discover_reads,
-                icon = Icons.AutoMirrored.Outlined.Article,
-                tint = MaterialTheme.colorScheme.onBackground,
-                nav = nav,
-                route = Route.Articles,
-            )
-
-            NavigationRow(
-                title = R.string.pictures,
-                icon = Icons.Outlined.Photo,
-                tint = MaterialTheme.colorScheme.onBackground,
-                nav = nav,
-                route = Route.Pictures,
-            )
-
-            NavigationRow(
-                title = R.string.shorts,
-                icon = Icons.Outlined.PlayCircle,
-                tint = MaterialTheme.colorScheme.onBackground,
-                nav = nav,
-                route = Route.Shorts,
-            )
-
-            NavigationRow(
-                title = R.string.public_chats,
-                icon = Icons.AutoMirrored.Outlined.Chat,
-                tint = MaterialTheme.colorScheme.onBackground,
-                nav = nav,
-                route = Route.PublicChats,
-            )
-
-            NavigationRow(
-                title = R.string.follow_packs,
-                icon = Icons.Outlined.CollectionsBookmark,
-                tint = MaterialTheme.colorScheme.onBackground,
-                nav = nav,
-                route = Route.FollowPacks,
-            )
-
-            NavigationRow(
-                title = R.string.live_streams,
-                icon = Icons.Outlined.Sensors,
-                tint = MaterialTheme.colorScheme.onBackground,
-                nav = nav,
-                route = Route.LiveStreams,
-            )
-
-            NavigationRow(
-                title = R.string.longs,
-                icon = Icons.Outlined.SmartDisplay,
-                tint = MaterialTheme.colorScheme.onBackground,
-                nav = nav,
-                route = Route.Longs,
-            )
-
-            NavigationRow(
-                title = R.string.polls,
-                icon = R.drawable.ic_poll,
-                iconReference = 1,
-                tint = MaterialTheme.colorScheme.onBackground,
-                nav = nav,
-                route = Route.Polls,
-            )
-
-            NavigationRow(
-                title = R.string.badges,
-                icon = Icons.Outlined.MilitaryTech,
-                tint = MaterialTheme.colorScheme.onBackground,
-                nav = nav,
-                route = Route.Badges,
-            )
-
-            NavigationRow(
-                title = R.string.discover_marketplace,
-                icon = Icons.Outlined.Storefront,
-                tint = MaterialTheme.colorScheme.onBackground,
-                nav = nav,
-                route = Route.Products,
-            )
-
-            NavigationRow(
-                title = R.string.emoji_sets,
-                icon = Icons.Outlined.EmojiEmotions,
-                tint = MaterialTheme.colorScheme.onBackground,
-                nav = nav,
-                route = Route.BrowseEmojiSets,
-            )
-        }
 
         CollapsibleSection(title = R.string.drawer_section_create) {
             NavigationRow(
@@ -746,13 +577,9 @@ fun ListContent(
                 },
             )
 
-            NavigationRow(
+            NavBarCatalog[NavBarItem.SETTINGS]?.let {
-                title = R.string.settings,
+                CatalogNavigationRow(it, MaterialTheme.colorScheme.onBackground, accountViewModel, nav)
-                icon = Icons.Outlined.Settings,
+            }
-                tint = MaterialTheme.colorScheme.onBackground,
-                nav = nav,
-                route = Route.AllSettings,
-            )
         }
 
         Spacer(modifier = Modifier.weight(1f))
@@ -766,6 +593,61 @@ fun ListContent(
     }
 }
 
+/**
+ * Renders a drawer section by iterating [ids] and looking each one up in [NavBarCatalog].
+ * Profile gets the primary-colored tint; every other item uses onBackground.
+ */
+@Composable
+fun CatalogSection(
+    titleRes: Int,
+    ids: List<NavBarItem>,
+    accountViewModel: AccountViewModel,
+    nav: INav,
+) {
+    val primary = MaterialTheme.colorScheme.primary
+    val onBackground = MaterialTheme.colorScheme.onBackground
+
+    CollapsibleSection(title = titleRes) {
+        ids.forEach { id ->
+            NavBarCatalog[id]?.let { def ->
+                val tint = if (def.id == NavBarItem.PROFILE) primary else onBackground
+                CatalogNavigationRow(def, tint, accountViewModel, nav)
+            }
+        }
+    }
+}
+
+@Composable
+fun CatalogNavigationRow(
+    def: NavBarItemDef,
+    tint: Color,
+    accountViewModel: AccountViewModel,
+    nav: INav,
+) {
+    when (val icon = def.icon) {
+        is NavBarIcon.Drawable -> {
+            NavigationRow(
+                title = def.labelRes,
+                icon = icon.resId,
+                iconReference = icon.reference,
+                tint = tint,
+                nav = nav,
+                computeRoute = { def.resolveRoute(accountViewModel) },
+            )
+        }
+
+        is NavBarIcon.Vector -> {
+            NavigationRow(
+                title = def.labelRes,
+                icon = icon.vector,
+                tint = tint,
+                nav = nav,
+                computeRoute = { def.resolveRoute(accountViewModel) },
+            )
+        }
+    }
+}
+
 @Composable
 fun CollapsibleSection(
     title: Int,
@@ -821,6 +703,27 @@ fun NavigationRow(
     )
 }
 
+@Composable
+fun NavigationRow(
+    title: Int,
+    icon: Int,
+    iconReference: Int,
+    tint: Color,
+    nav: INav,
+    computeRoute: () -> Route,
+) {
+    IconRow(
+        title,
+        icon,
+        iconReference,
+        tint,
+        onClick = {
+            nav.closeDrawer()
+            nav.nav(computeRoute)
+        },
+    )
+}
+
 @Composable
 fun NavigationRow(
     title: Int,

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

@@ -209,6 +209,8 @@ sealed class Route {
 
     @Serializable object ReactionsSettings : Route()
 
+    @Serializable object BottomBarSettings : Route()
+
     @Serializable object CallSettings : Route()
 
     @Serializable object Lists : Route()

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

@@ -32,6 +32,7 @@ import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.outlined.AutoAwesome
 import androidx.compose.material.icons.outlined.Bolt
 import androidx.compose.material.icons.outlined.CloudUpload
+import androidx.compose.material.icons.outlined.Dashboard
 import androidx.compose.material.icons.outlined.DeleteForever
 import androidx.compose.material.icons.outlined.FavoriteBorder
 import androidx.compose.material.icons.outlined.GroupAdd
@@ -209,6 +210,13 @@ fun AllSettingsScreen(
                 tint = tint,
                 onClick = { nav.nav(Route.ReactionsSettings) },
             )
+            HorizontalDivider()
+            SettingsNavigationRow(
+                title = R.string.bottom_bar_settings,
+                icon = Icons.Outlined.Dashboard,
+                tint = tint,
+                onClick = { nav.nav(Route.BottomBarSettings) },
+            )
             HorizontalDivider(thickness = 4.dp)
             SettingsSectionHeader(R.string.danger_zone)
             accountViewModel.account.settings.keyPair.privKey?.let {

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

@@ -0,0 +1,393 @@
+/*
+ * 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.settings
+
+import androidx.compose.animation.core.animateFloatAsState
+import androidx.compose.foundation.ScrollState
+import androidx.compose.foundation.gestures.detectDragGestures
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.DragIndicator
+import androidx.compose.material3.HorizontalDivider
+import androidx.compose.material3.Icon
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Switch
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableFloatStateOf
+import androidx.compose.runtime.mutableIntStateOf
+import androidx.compose.runtime.mutableStateMapOf
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.graphicsLayer
+import androidx.compose.ui.input.pointer.pointerInput
+import androidx.compose.ui.layout.onGloballyPositioned
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.zIndex
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import com.vitorpamplona.amethyst.R
+import com.vitorpamplona.amethyst.ui.navigation.bottombars.NavBarCatalog
+import com.vitorpamplona.amethyst.ui.navigation.bottombars.NavBarIcon
+import com.vitorpamplona.amethyst.ui.navigation.bottombars.NavBarItem
+import com.vitorpamplona.amethyst.ui.navigation.bottombars.NavBarItemDef
+import com.vitorpamplona.amethyst.ui.navigation.navs.EmptyNav
+import com.vitorpamplona.amethyst.ui.navigation.navs.INav
+import com.vitorpamplona.amethyst.ui.navigation.topbars.TopBarWithBackButton
+import com.vitorpamplona.amethyst.ui.painterRes
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.mockAccountViewModel
+import com.vitorpamplona.amethyst.ui.stringRes
+import com.vitorpamplona.amethyst.ui.theme.Size20dp
+import com.vitorpamplona.amethyst.ui.theme.ThemeComparisonRow
+
+@Composable
+@Preview(device = "spec:width=2100px,height=2340px,dpi=440")
+fun BottomBarSettingsScreenPreview() {
+    ThemeComparisonRow {
+        BottomBarSettingsScreen(
+            mockAccountViewModel(),
+            EmptyNav(),
+        )
+    }
+}
+
+@Composable
+fun BottomBarSettingsScreen(
+    accountViewModel: AccountViewModel,
+    nav: INav,
+) {
+    Scaffold(
+        topBar = {
+            TopBarWithBackButton(stringRes(id = R.string.bottom_bar_settings), nav::popBack)
+        },
+    ) { padding ->
+        Column(Modifier.padding(padding)) {
+            BottomBarSettingsContent(accountViewModel)
+        }
+    }
+}
+
+@Composable
+fun BottomBarSettingsContent(accountViewModel: AccountViewModel) {
+    val pinned by accountViewModel.settings.uiSettingsFlow.bottomBarItems
+        .collectAsStateWithLifecycle()
+
+    var items by remember(pinned) {
+        mutableStateOf(initialRows(pinned))
+    }
+
+    fun save(newItems: List<Row>) {
+        items = newItems
+        accountViewModel.settings.uiSettingsFlow.bottomBarItems.tryEmit(
+            newItems.filter { it.pinned }.map { it.item },
+        )
+    }
+
+    var draggedItemIndex by remember { mutableIntStateOf(-1) }
+    var dragOffset by remember { mutableFloatStateOf(0f) }
+    val itemHeights = remember { mutableStateMapOf<Int, Float>() }
+    val isDragging = draggedItemIndex >= 0
+    val scrollState = remember { ScrollState(0) }
+
+    Column(
+        modifier =
+            Modifier
+                .fillMaxSize()
+                .verticalScroll(scrollState, enabled = !isDragging),
+    ) {
+        Spacer(modifier = Modifier.height(16.dp))
+
+        Text(
+            text = stringRes(R.string.bottom_bar_settings_description),
+            style = MaterialTheme.typography.bodyMedium,
+            color = Color.Gray,
+            modifier = Modifier.padding(bottom = 16.dp, start = Size20dp, end = Size20dp),
+        )
+
+        items.forEachIndexed { index, row ->
+            val rowIsDragging = draggedItemIndex == index
+            val targetElevation = if (rowIsDragging) 8f else 0f
+            val animatedElevation by animateFloatAsState(
+                targetValue = targetElevation,
+                label = "dragElevation",
+            )
+
+            NavBarItemCard(
+                row = row,
+                isDragging = rowIsDragging,
+                canDrag = row.pinned,
+                dragOffsetY = if (rowIsDragging) dragOffset else 0f,
+                elevation = animatedElevation,
+                onTogglePinned = {
+                    val newItems = items.toMutableList()
+                    val toggled = row.copy(pinned = !row.pinned)
+                    newItems.removeAt(index)
+                    val insertIndex =
+                        if (toggled.pinned) {
+                            newItems.indexOfFirst { !it.pinned }.let { if (it < 0) newItems.size else it }
+                        } else {
+                            val firstUnpinned = newItems.indexOfFirst { !it.pinned }
+                            if (firstUnpinned < 0) newItems.size else firstUnpinned
+                        }
+                    newItems.add(insertIndex, toggled)
+                    save(newItems)
+                },
+                onMeasured = { height ->
+                    itemHeights[index] = height
+                },
+                onDragStart = {
+                    draggedItemIndex = index
+                    dragOffset = 0f
+                },
+                onDrag = { dragAmount ->
+                    dragOffset += dragAmount
+
+                    val currentIndex = draggedItemIndex
+                    if (currentIndex < 0) return@NavBarItemCard
+
+                    // Can only swap among pinned items (row.pinned == true).
+                    if (dragOffset < 0 && currentIndex > 0 && items[currentIndex - 1].pinned) {
+                        val aboveHeight = itemHeights[currentIndex - 1] ?: 0f
+                        if (-dragOffset > aboveHeight / 2f) {
+                            val newItems = items.toMutableList()
+                            val temp = newItems[currentIndex - 1]
+                            newItems[currentIndex - 1] = newItems[currentIndex]
+                            newItems[currentIndex] = temp
+                            items = newItems
+
+                            val h1 = itemHeights[currentIndex]
+                            val h2 = itemHeights[currentIndex - 1]
+                            if (h1 != null) itemHeights[currentIndex - 1] = h1
+                            if (h2 != null) itemHeights[currentIndex] = h2
+
+                            dragOffset += aboveHeight
+                            draggedItemIndex = currentIndex - 1
+                        }
+                    }
+
+                    if (dragOffset > 0 &&
+                        currentIndex < items.lastIndex &&
+                        items[currentIndex + 1].pinned
+                    ) {
+                        val belowHeight = itemHeights[currentIndex + 1] ?: 0f
+                        if (dragOffset > belowHeight / 2f) {
+                            val newItems = items.toMutableList()
+                            val temp = newItems[currentIndex + 1]
+                            newItems[currentIndex + 1] = newItems[currentIndex]
+                            newItems[currentIndex] = temp
+                            items = newItems
+
+                            val h1 = itemHeights[currentIndex]
+                            val h2 = itemHeights[currentIndex + 1]
+                            if (h1 != null) itemHeights[currentIndex + 1] = h1
+                            if (h2 != null) itemHeights[currentIndex] = h2
+
+                            dragOffset -= belowHeight
+                            draggedItemIndex = currentIndex + 1
+                        }
+                    }
+                },
+                onDragEnd = {
+                    draggedItemIndex = -1
+                    dragOffset = 0f
+                    save(items)
+                },
+                onDragCancel = {
+                    draggedItemIndex = -1
+                    dragOffset = 0f
+                },
+                modifier =
+                    Modifier
+                        .zIndex(if (rowIsDragging) 1f else 0f),
+            )
+
+            val nextIsFirstUnpinned =
+                index < items.lastIndex && row.pinned && !items[index + 1].pinned
+            if (nextIsFirstUnpinned) {
+                SectionDivider(R.string.bottom_bar_settings_available)
+            } else if (index < items.lastIndex) {
+                HorizontalDivider(modifier = Modifier.padding(horizontal = Size20dp))
+            }
+        }
+
+        Spacer(modifier = Modifier.height(16.dp))
+    }
+}
+
+private data class Row(
+    val item: NavBarItem,
+    val pinned: Boolean,
+)
+
+private fun initialRows(pinned: List<NavBarItem>): List<Row> {
+    val pinnedRows = pinned.mapNotNull { id -> NavBarCatalog[id]?.let { Row(id, pinned = true) } }
+    val unpinnedRows =
+        NavBarCatalog.keys
+            .filter { it !in pinned }
+            .map { Row(it, pinned = false) }
+    return pinnedRows + unpinnedRows
+}
+
+@Composable
+private fun SectionDivider(titleRes: Int) {
+    Text(
+        text = stringRes(titleRes),
+        style = MaterialTheme.typography.labelMedium,
+        color = MaterialTheme.colorScheme.onSurfaceVariant,
+        modifier = Modifier.padding(top = 20.dp, bottom = 4.dp, start = Size20dp, end = Size20dp),
+    )
+    HorizontalDivider(modifier = Modifier.padding(horizontal = Size20dp))
+}
+
+@Composable
+private fun NavBarItemCard(
+    row: Row,
+    isDragging: Boolean,
+    canDrag: Boolean,
+    dragOffsetY: Float,
+    elevation: Float,
+    onTogglePinned: () -> Unit,
+    onMeasured: (Float) -> Unit,
+    onDragStart: () -> Unit,
+    onDrag: (Float) -> Unit,
+    onDragEnd: () -> Unit,
+    onDragCancel: () -> Unit,
+    modifier: Modifier = Modifier,
+) {
+    val def = NavBarCatalog[row.item] ?: return
+    val label = stringRes(def.labelRes)
+
+    Column(
+        modifier =
+            modifier
+                .fillMaxWidth()
+                .onGloballyPositioned { coordinates ->
+                    onMeasured(coordinates.size.height.toFloat())
+                }.graphicsLayer {
+                    translationY = dragOffsetY
+                    shadowElevation = elevation
+                    if (isDragging) {
+                        scaleX = 1.02f
+                        scaleY = 1.02f
+                    }
+                }.padding(vertical = 8.dp, horizontal = Size20dp)
+                .then(
+                    if (canDrag) {
+                        Modifier.pointerInput(Unit) {
+                            detectDragGestures(
+                                onDragStart = { onDragStart() },
+                                onDrag = { change, dragAmount ->
+                                    change.consume()
+                                    onDrag(dragAmount.y)
+                                },
+                                onDragEnd = { onDragEnd() },
+                                onDragCancel = { onDragCancel() },
+                            )
+                        }
+                    } else {
+                        Modifier
+                    },
+                ),
+    ) {
+        Row(
+            modifier = Modifier.fillMaxWidth(),
+            verticalAlignment = Alignment.CenterVertically,
+            horizontalArrangement = Arrangement.spacedBy(12.dp),
+        ) {
+            NavBarIconBox(def)
+
+            Text(
+                text = label,
+                style = MaterialTheme.typography.bodyLarge,
+                maxLines = 1,
+                overflow = TextOverflow.Ellipsis,
+                modifier = Modifier.weight(1f),
+            )
+
+            Switch(
+                checked = row.pinned,
+                onCheckedChange = { onTogglePinned() },
+            )
+
+            Box(
+                modifier = Modifier.size(28.dp),
+                contentAlignment = Alignment.Center,
+            ) {
+                if (canDrag) {
+                    Icon(
+                        Icons.Default.DragIndicator,
+                        contentDescription = stringRes(R.string.bottom_bar_settings_reorder),
+                        modifier = Modifier.size(24.dp),
+                        tint = MaterialTheme.colorScheme.onSurfaceVariant,
+                    )
+                }
+            }
+        }
+    }
+}
+
+@Composable
+private fun NavBarIconBox(def: NavBarItemDef) {
+    Box(
+        modifier = Modifier.size(28.dp),
+        contentAlignment = Alignment.Center,
+    ) {
+        val description = stringRes(def.labelRes)
+        val tint = MaterialTheme.colorScheme.onBackground
+        when (val icon = def.icon) {
+            is NavBarIcon.Drawable -> {
+                Icon(
+                    painter = painterRes(icon.resId, icon.reference),
+                    contentDescription = description,
+                    modifier = Modifier.size(24.dp),
+                    tint = tint,
+                )
+            }
+
+            is NavBarIcon.Vector -> {
+                Icon(
+                    imageVector = icon.vector,
+                    contentDescription = description,
+                    modifier = Modifier.size(24.dp),
+                    tint = tint,
+                )
+            }
+        }
+    }
+}

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

@@ -369,6 +369,7 @@
     <string name="private_conversation_notification">"&lt;Unable to decrypt private message&gt;\n\nYou were cited in a private/encrypted conversation between %1$s and %2$s."</string>
     <string name="account_switch_add_account_dialog_title">Add New Account</string>
     <string name="drawer_accounts">Accounts</string>
+    <string name="drawer_section_navigate">Navigate</string>
     <string name="drawer_section_you">You</string>
     <string name="drawer_section_feeds">Feeds</string>
     <string name="drawer_section_create">Create</string>
@@ -1554,6 +1555,10 @@
 
     <string name="change_reaction">Change Quick Reactions</string>
 
+    <string name="bottom_bar_settings">Bottom Navigation Bar</string>
+    <string name="bottom_bar_settings_description">Drag to reorder. Toggle to add or remove an item from the bottom bar. With zero items the bottom bar is hidden.</string>
+    <string name="bottom_bar_settings_available">Available</string>
+    <string name="bottom_bar_settings_reorder">Reorder</string>
     <string name="reactions_settings">Reaction Row</string>
     <string name="reactions_settings_description">Configure which reaction buttons are shown, their order, and whether to display counters.</string>
     <string name="reactions_settings_enabled">Enabled</string>