Introduce RoomListRoomSummaryFactory and remove RoomListRoomSummaryPlaceholders.

features/roomlist/impl/src/main/kotlin/io/element/android/features/roomlist/impl/RoomListStateProvider.kt

@@ -19,7 +19,6 @@ package io.element.android.features.roomlist.impl
 import androidx.compose.ui.tooling.preview.PreviewParameterProvider
 import io.element.android.features.leaveroom.api.aLeaveRoomState
 import io.element.android.features.roomlist.impl.model.RoomListRoomSummary
-import io.element.android.features.roomlist.impl.model.RoomListRoomSummaryPlaceholders
 import io.element.android.features.roomlist.impl.model.aRoomListRoomSummary
 import io.element.android.libraries.designsystem.components.avatar.AvatarData
 import io.element.android.libraries.designsystem.components.avatar.AvatarSize
@@ -88,7 +87,13 @@ internal fun aRoomListRoomSummaryList(): ImmutableList<RoomListRoomSummary> {
             avatarData = AvatarData("!id", "Z", size = AvatarSize.RoomListItem),
             id = "!roomId2:domain",
         ),
-        RoomListRoomSummaryPlaceholders.create("!roomId3:domain"),
-        RoomListRoomSummaryPlaceholders.create("!roomId4:domain"),
+        aRoomListRoomSummary(
+            id = "!roomId3:domain",
+            isPlaceholder = true,
+        ),
+        aRoomListRoomSummary(
+            id = "!roomId4:domain",
+            isPlaceholder = true,
+        ),
     )
 }

features/roomlist/impl/src/main/kotlin/io/element/android/features/roomlist/impl/datasource/RoomListDataSource.kt

@@ -17,16 +17,9 @@
 package io.element.android.features.roomlist.impl.datasource
 
 import io.element.android.features.roomlist.impl.model.RoomListRoomSummary
-import io.element.android.features.roomlist.impl.model.RoomListRoomSummaryPlaceholders
 import io.element.android.libraries.androidutils.diff.DiffCacheUpdater
 import io.element.android.libraries.androidutils.diff.MutableListDiffCache
 import io.element.android.libraries.core.coroutine.CoroutineDispatchers
-import io.element.android.libraries.core.extensions.orEmpty
-import io.element.android.libraries.dateformatter.api.LastMessageTimestampFormatter
-import io.element.android.libraries.designsystem.components.avatar.AvatarData
-import io.element.android.libraries.designsystem.components.avatar.AvatarSize
-import io.element.android.libraries.eventformatter.api.RoomLastMessageFormatter
-import io.element.android.libraries.matrix.api.core.RoomId
 import io.element.android.libraries.matrix.api.notificationsettings.NotificationSettingsService
 import io.element.android.libraries.matrix.api.roomlist.RoomListService
 import io.element.android.libraries.matrix.api.roomlist.RoomSummary
@@ -49,8 +42,7 @@ import kotlin.time.Duration.Companion.seconds
 
 class RoomListDataSource @Inject constructor(
     private val roomListService: RoomListService,
-    private val lastMessageTimestampFormatter: LastMessageTimestampFormatter,
-    private val roomLastMessageFormatter: RoomLastMessageFormatter,
+    private val roomListRoomSummaryFactory: RoomListRoomSummaryFactory,
     private val coroutineDispatchers: CoroutineDispatchers,
     private val notificationSettingsService: NotificationSettingsService,
     private val appScope: CoroutineScope,
@@ -121,7 +113,7 @@ class RoomListDataSource @Inject constructor(
     private suspend fun buildAndEmitAllRooms(roomSummaries: List<RoomSummary>) {
         if (diffCache.isEmpty()) {
             _allRooms.emit(
-                RoomListRoomSummaryPlaceholders.createFakeList(16).toImmutableList()
+                roomListRoomSummaryFactory.createFakeList()
             )
         } else {
             val roomListRoomSummaries = ArrayList<RoomListRoomSummary>()
@@ -141,34 +133,10 @@ class RoomListDataSource @Inject constructor(
 
     private fun buildAndCacheItem(roomSummaries: List<RoomSummary>, index: Int): RoomListRoomSummary? {
         val roomListRoomSummary = when (val roomSummary = roomSummaries.getOrNull(index)) {
-            is RoomSummary.Empty -> RoomListRoomSummaryPlaceholders.create(roomSummary.identifier)
-            is RoomSummary.Filled -> {
-                val avatarData = AvatarData(
-                    id = roomSummary.identifier(),
-                    name = roomSummary.details.name,
-                    url = roomSummary.details.avatarUrl,
-                    size = AvatarSize.RoomListItem,
-                )
-                val roomIdentifier = roomSummary.identifier()
-                RoomListRoomSummary(
-                    id = roomSummary.identifier(),
-                    roomId = RoomId(roomIdentifier),
-                    name = roomSummary.details.name,
-                    hasUnread = roomSummary.details.unreadNotificationCount > 0,
-                    timestamp = lastMessageTimestampFormatter.format(roomSummary.details.lastMessageTimestamp),
-                    lastMessage = roomSummary.details.lastMessage?.let { message ->
-                        roomLastMessageFormatter.format(message.event, roomSummary.details.isDirect)
-                    }.orEmpty(),
-                    avatarData = avatarData,
-                    isPlaceholder = false,
-                    userDefinedNotificationMode = roomSummary.details.userDefinedNotificationMode,
-                    hasRoomCall = roomSummary.details.hasRoomCall,
-                    isDm = roomSummary.details.isDm,
-                )
-            }
+            is RoomSummary.Empty -> roomListRoomSummaryFactory.createPlaceholder(roomSummary.identifier)
+            is RoomSummary.Filled -> roomListRoomSummaryFactory.create(roomSummary)
             null -> null
         }
-
         diffCache[index] = roomListRoomSummary
         return roomListRoomSummary
     }

features/roomlist/impl/src/main/kotlin/io/element/android/features/roomlist/impl/datasource/RoomListRoomSummaryFactory.kt

@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2024 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.element.android.features.roomlist.impl.datasource
+
+import io.element.android.features.roomlist.impl.model.RoomListRoomSummary
+import io.element.android.libraries.core.extensions.orEmpty
+import io.element.android.libraries.dateformatter.api.LastMessageTimestampFormatter
+import io.element.android.libraries.designsystem.components.avatar.AvatarData
+import io.element.android.libraries.designsystem.components.avatar.AvatarSize
+import io.element.android.libraries.eventformatter.api.RoomLastMessageFormatter
+import io.element.android.libraries.matrix.api.core.RoomId
+import io.element.android.libraries.matrix.api.roomlist.RoomSummary
+import kotlinx.collections.immutable.ImmutableList
+import kotlinx.collections.immutable.toImmutableList
+import javax.inject.Inject
+
+class RoomListRoomSummaryFactory @Inject constructor(
+    private val lastMessageTimestampFormatter: LastMessageTimestampFormatter,
+    private val roomLastMessageFormatter: RoomLastMessageFormatter,
+) {
+    fun createPlaceholder(id: String): RoomListRoomSummary {
+        return RoomListRoomSummary(
+            id = id,
+            roomId = RoomId("!aRoom:domain"),
+            isPlaceholder = true,
+            name = "Short name",
+            timestamp = "hh:mm",
+            lastMessage = "Last message for placeholder",
+            avatarData = AvatarData(id, "S", size = AvatarSize.RoomListItem),
+            hasUnread = false,
+            userDefinedNotificationMode = null,
+            hasRoomCall = false,
+            isDm = false,
+        )
+    }
+
+    fun createFakeList(): ImmutableList<RoomListRoomSummary> {
+        return List(16) {
+            createPlaceholder("!fakeRoom$it:domain")
+        }.toImmutableList()
+    }
+
+    fun create(roomSummary: RoomSummary.Filled): RoomListRoomSummary {
+        val roomIdentifier = roomSummary.identifier()
+        val avatarData = AvatarData(
+            id = roomIdentifier,
+            name = roomSummary.details.name,
+            url = roomSummary.details.avatarUrl,
+            size = AvatarSize.RoomListItem,
+        )
+        return RoomListRoomSummary(
+            id = roomIdentifier,
+            roomId = RoomId(roomIdentifier),
+            name = roomSummary.details.name,
+            hasUnread = roomSummary.details.unreadNotificationCount > 0,
+            timestamp = lastMessageTimestampFormatter.format(roomSummary.details.lastMessageTimestamp),
+            lastMessage = roomSummary.details.lastMessage?.let { message ->
+                roomLastMessageFormatter.format(message.event, roomSummary.details.isDirect)
+            }.orEmpty(),
+            avatarData = avatarData,
+            isPlaceholder = false,
+            userDefinedNotificationMode = roomSummary.details.userDefinedNotificationMode,
+            hasRoomCall = roomSummary.details.hasRoomCall,
+            isDm = roomSummary.details.isDm,
+        )
+    }
+}

features/roomlist/impl/src/main/kotlin/io/element/android/features/roomlist/impl/model/RoomListRoomSummaryPlaceholders.kt

@@ -1,47 +0,0 @@
-/*
- * Copyright (c) 2023 New Vector Ltd
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.element.android.features.roomlist.impl.model
-
-import io.element.android.libraries.designsystem.components.avatar.AvatarData
-import io.element.android.libraries.designsystem.components.avatar.AvatarSize
-import io.element.android.libraries.matrix.api.core.RoomId
-
-object RoomListRoomSummaryPlaceholders {
-    fun create(id: String): RoomListRoomSummary {
-        return RoomListRoomSummary(
-            id = id,
-            roomId = RoomId("!aRoom:domain"),
-            isPlaceholder = true,
-            name = "Short name",
-            timestamp = "hh:mm",
-            lastMessage = "Last message for placeholder",
-            avatarData = AvatarData(id, "S", size = AvatarSize.RoomListItem),
-            hasUnread = false,
-            userDefinedNotificationMode = null,
-            hasRoomCall = false,
-            isDm = false,
-        )
-    }
-
-    fun createFakeList(size: Int): List<RoomListRoomSummary> {
-        return mutableListOf<RoomListRoomSummary>().apply {
-            repeat(size) {
-                add(create("!fakeRoom$it:domain"))
-            }
-        }
-    }
-}

features/roomlist/impl/src/test/kotlin/io/element/android/features/roomlist/impl/RoomListPresenterTests.kt

@@ -28,6 +28,7 @@ import io.element.android.features.networkmonitor.test.FakeNetworkMonitor
 import io.element.android.features.roomlist.impl.datasource.FakeInviteDataSource
 import io.element.android.features.roomlist.impl.datasource.InviteStateDataSource
 import io.element.android.features.roomlist.impl.datasource.RoomListDataSource
+import io.element.android.features.roomlist.impl.datasource.RoomListRoomSummaryFactory
 import io.element.android.features.roomlist.impl.model.RoomListRoomSummary
 import io.element.android.libraries.dateformatter.api.LastMessageTimestampFormatter
 import io.element.android.libraries.dateformatter.test.FakeLastMessageTimestampFormatter
@@ -414,9 +415,11 @@ class RoomListPresenterTests {
         inviteStateDataSource = inviteStateDataSource,
         leaveRoomPresenter = leaveRoomPresenter,
         roomListDataSource = RoomListDataSource(
-            client.roomListService,
-            lastMessageTimestampFormatter,
-            roomLastMessageFormatter,
+            roomListService = client.roomListService,
+            roomListRoomSummaryFactory = RoomListRoomSummaryFactory(
+                lastMessageTimestampFormatter = lastMessageTimestampFormatter,
+                roomLastMessageFormatter = roomLastMessageFormatter,
+            ),
             coroutineDispatchers = testCoroutineDispatchers(),
             notificationSettingsService = client.notificationSettingsService(),
             appScope = coroutineScope