feat(message-list): add unified folder support

feature/mail/message/list/internal/src/main/kotlin/net/thunderbird/feature/mail/message/list/internal/ui/component/MessageItemAvatar.kt

@@ -23,7 +23,7 @@ import net.thunderbird.feature.mail.message.list.ui.state.Avatar
 
 @Composable
 fun MessageItemAvatar(
-    avatar: Avatar,
+    avatar: Avatar?,
     showMessageAvatar: Boolean,
     modifier: Modifier = Modifier,
     onAvatarClick: () -> Unit,
@@ -60,6 +60,7 @@ fun MessageItemAvatar(
                 )
 
                 is Avatar.Monogram -> TextTitleSmall(text = avatar.value)
+                null -> Unit
             }
         }
     }

feature/mail/message/list/internal/src/main/kotlin/net/thunderbird/feature/mail/message/list/internal/ui/state/machine/SetupGlobalState.kt

@@ -4,6 +4,7 @@ import kotlinx.collections.immutable.toImmutableList
 import kotlinx.collections.immutable.toImmutableMap
 import kotlinx.collections.immutable.toPersistentMap
 import net.thunderbird.core.common.state.builder.StateMachineBuilder
+import net.thunderbird.feature.account.UnifiedAccountId
 import net.thunderbird.feature.mail.message.list.ui.event.FolderEvent
 import net.thunderbird.feature.mail.message.list.ui.event.MessageItemEvent
 import net.thunderbird.feature.mail.message.list.ui.event.MessageListEvent
@@ -32,7 +33,7 @@ internal fun StateMachineBuilder<MessageListState, MessageListEvent>.globalState
         }
 
         transition<FolderEvent.FolderLoaded> { state, (folder) ->
-            state.withMetadata { copy(folder = folder) }
+            state.withMetadata { copy(folder = folder, showAccountIndicator = folder.account.id == UnifiedAccountId) }
         }
 
         transition<MessageItemEvent.SelectAll> { state, _ ->

feature/mail/message/list/internal/src/main/kotlin/net/thunderbird/feature/mail/message/list/internal/ui/state/sideeffect/LoadFolderInformationSideEffect.kt

@@ -3,8 +3,12 @@ package net.thunderbird.feature.mail.message.list.internal.ui.state.sideeffect
 import androidx.compose.ui.graphics.Color
 import app.k9mail.legacy.mailstore.FolderRepository
 import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.flow.first
 import net.thunderbird.core.logging.Logger
 import net.thunderbird.feature.account.AccountId
+import net.thunderbird.feature.account.UnifiedAccountId
+import net.thunderbird.feature.account.profile.AccountProfileRepository
+import net.thunderbird.feature.mail.folder.api.FolderType
 import net.thunderbird.feature.mail.message.list.ui.effect.MessageListEffect
 import net.thunderbird.feature.mail.message.list.ui.event.FolderEvent
 import net.thunderbird.feature.mail.message.list.ui.event.MessageListEvent
@@ -22,18 +26,41 @@ internal class LoadFolderInformationSideEffect(
     dispatch: suspend (MessageListEvent) -> Unit,
     private val logger: Logger,
     private val folderRepository: FolderRepository,
+    private val profileRepository: AccountProfileRepository,
 ) : MessageListStateSideEffectHandler(logger, dispatch) {
     override fun accept(event: MessageListEvent, oldState: MessageListState, newState: MessageListState): Boolean =
-        accountIds.size == 1 && folderId != null && event == MessageListEvent.LoadConfigurations
+        event == MessageListEvent.LoadConfigurations
 
     override suspend fun consume(
         event: MessageListEvent,
         oldState: MessageListState,
         newState: MessageListState,
     ): ConsumeResult {
-        val accountId = accountIds.first()
-        val folderId = requireNotNull(folderId)
         logger.verbose(TAG) { "$TAG.handle() called with: oldState = $oldState, newState = $newState" }
+        return if (folderId == null) {
+            consumeUnifiedFolder()
+        } else {
+            consumeSingleAccountFolder(folderId)
+        }
+    }
+
+    private suspend fun consumeUnifiedFolder(): ConsumeResult {
+        dispatch(
+            FolderEvent.FolderLoaded(
+                folder = Folder(
+                    id = "unified_inbox",
+                    account = Account(id = UnifiedAccountId, color = Color.Unspecified),
+                    name = "Unified Inbox",
+                    type = FolderType.INBOX,
+                ),
+            ),
+        )
+
+        return ConsumeResult.Consumed
+    }
+
+    private suspend fun consumeSingleAccountFolder(folderId: Long): ConsumeResult {
+        val accountId = accountIds.first()
         val folder = folderRepository.getFolder(accountId, folderId)
         return if (folder != null) {
             val remoteFolder = if (!folder.isLocalOnly) {
@@ -42,11 +69,13 @@ internal class LoadFolderInformationSideEffect(
                 null
             }
 
+            val profile = profileRepository.getById(accountId).first()
+            val color = profile?.color?.let(::Color) ?: Color.Unspecified
             dispatch(
                 FolderEvent.FolderLoaded(
                     folder = Folder(
                         id = remoteFolder?.serverId ?: "local_folder",
-                        account = Account(id = accountId, color = Color.Unspecified), // TODO: fetch color
+                        account = Account(id = accountId, color = color),
                         name = folder.name,
                         type = folder.type,
                     ),
@@ -63,6 +92,7 @@ internal class LoadFolderInformationSideEffect(
         private val folderId: Long?,
         private val logger: Logger,
         private val folderRepository: FolderRepository,
+        private val profileRepository: AccountProfileRepository,
     ) : MessageListStateSideEffectHandlerFactory {
         override fun create(
             scope: CoroutineScope,
@@ -74,6 +104,7 @@ internal class LoadFolderInformationSideEffect(
             dispatch = dispatch,
             logger = logger,
             folderRepository = folderRepository,
+            profileRepository = profileRepository,
         )
     }
 }

feature/mail/message/list/internal/src/main/kotlin/net/thunderbird/feature/mail/message/list/internal/ui/state/sideeffect/inject/MessageListSideEffectsModule.kt

@@ -54,6 +54,7 @@ internal val messageListSideEffectsModule = module {
                 folderId = args.folderId,
                 logger = get(),
                 folderRepository = get(),
+                profileRepository = get(),
             )
         },
         { AllConfigurationsReadySideEffect.Factory(logger = get()) },