[Message Actions] Report messages (#642)

* Add report messages feature

* Try to improve how snackbars are delivered

---------

Co-authored-by: ElementBot <benoitm+elementbot@element.io>

libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/utils/Snackbar.kt

@@ -22,13 +22,14 @@ import androidx.compose.material3.SnackbarHostState
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.collectAsState
-import androidx.compose.runtime.getValue
+import androidx.compose.runtime.compositionLocalOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.ui.res.stringResource
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.update
+import kotlinx.coroutines.isActive
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
@@ -52,19 +53,16 @@ class SnackbarDispatcher {
     }
 }
 
+/** Used to provide a [SnackbarDispatcher] to composable functions, it's needed for [rememberSnackbarHostState]. */
+val LocalSnackbarDispatcher = compositionLocalOf<SnackbarDispatcher> {
+    error("No SnackbarDispatcher provided")
+}
+
 @Composable
 fun handleSnackbarMessage(
     snackbarDispatcher: SnackbarDispatcher
 ): SnackbarMessage? {
-    val snackbarMessage by snackbarDispatcher.snackbarMessage.collectAsState(initial = null)
-    LaunchedEffect(snackbarMessage) {
-        if (snackbarMessage != null) {
-            launch {
-                snackbarDispatcher.clear()
-            }
-        }
-    }
-    return snackbarMessage
+    return snackbarDispatcher.snackbarMessage.collectAsState(initial = null).value
 }
 
 @Composable
@@ -74,6 +72,7 @@ fun rememberSnackbarHostState(snackbarMessage: SnackbarMessage?): SnackbarHostSt
     val snackbarMessageText = snackbarMessage?.let {
         stringResource(id = snackbarMessage.messageResId)
     }
+    val dispatcher = LocalSnackbarDispatcher.current
     LaunchedEffect(snackbarMessage) {
         if (snackbarMessageText == null) return@LaunchedEffect
         coroutineScope.launch {
@@ -81,6 +80,9 @@ fun rememberSnackbarHostState(snackbarMessage: SnackbarMessage?): SnackbarHostSt
                 message = snackbarMessageText,
                 duration = snackbarMessage.duration,
             )
+            if (isActive) {
+                dispatcher.clear()
+            }
         }
     }
     return snackbarHostState

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/room/MatrixRoom.kt

@@ -112,4 +112,6 @@ interface MatrixRoom : Closeable {
     suspend fun setName(name: String): Result<Unit>
 
     suspend fun setTopic(topic: String): Result<Unit>
+
+    suspend fun reportContent(eventId: EventId, reason: String, blockUserId: UserId?): Result<Unit>
 }

libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/room/RustMatrixRoom.kt

@@ -329,4 +329,13 @@ class RustMatrixRoom(
                 innerRoom.setTopic(topic)
             }
         }
+
+    override suspend fun reportContent(eventId: EventId, reason: String, blockUserId: UserId?): Result<Unit> = withContext(coroutineDispatchers.io) {
+        runCatching {
+            innerRoom.reportContent(eventId = eventId.value, score = null, reason = reason)
+            if (blockUserId != null) {
+                innerRoom.ignoreUser(blockUserId.value)
+            }
+        }
+    }
 }

libraries/matrix/test/src/main/kotlin/io/element/android/libraries/matrix/test/room/FakeMatrixRoom.kt

@@ -76,6 +76,7 @@ class FakeMatrixRoom(
     private var retrySendMessageResult = Result.success(Unit)
     private var cancelSendResult = Result.success(Unit)
     private var forwardEventResult = Result.success(Unit)
+    private var reportContentResult = Result.success(Unit)
 
     var sendMediaCount = 0
         private set
@@ -89,6 +90,9 @@ class FakeMatrixRoom(
     var cancelSendCount: Int = 0
         private set
 
+    var reportedContentCount: Int = 0
+        private set
+
     var isInviteAccepted: Boolean = false
         private set
 
@@ -249,6 +253,15 @@ class FakeMatrixRoom(
         setTopicResult
     }
 
+    override suspend fun reportContent(
+        eventId: EventId,
+        reason: String,
+        blockUserId: UserId?
+    ): Result<Unit> = simulateLongTask {
+        reportedContentCount++
+        return reportContentResult
+    }
+
     override fun close() = Unit
 
     fun givenLeaveRoomError(throwable: Throwable?) {
@@ -338,4 +351,8 @@ class FakeMatrixRoom(
     fun givenForwardEventResult(result: Result<Unit>) {
         forwardEventResult = result
     }
+
+    fun givenReportContentResult(result: Result<Unit>) {
+        reportContentResult = result
+    }
 }