Load more poll during sync if there is no completed backward load

matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/room/poll/LoadedPollsStatus.kt

@@ -22,4 +22,5 @@ package org.matrix.android.sdk.api.session.room.poll
 data class LoadedPollsStatus(
         val canLoadMore: Boolean,
         val nbSyncedDays: Int,
+        val hasCompletedASyncBackward: Boolean,
 )

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/poll/GetLoadedPollsStatusTask.kt

@@ -42,6 +42,7 @@ internal class DefaultGetLoadedPollsStatusTask @Inject constructor(
             LoadedPollsStatus(
                     canLoadMore = status.isEndOfPollsBackward.not(),
                     nbSyncedDays = status.getNbSyncedDays(params.currentTimestampMs),
+                    hasCompletedASyncBackward = status.hasCompletedASyncBackward,
             )
         }
     }

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/poll/LoadMorePollsTask.kt

@@ -65,6 +65,7 @@ internal class DefaultLoadMorePollsTask @Inject constructor(
         return LoadedPollsStatus(
                 canLoadMore = currentPollHistoryStatus.isEndOfPollsBackward.not(),
                 nbSyncedDays = currentPollHistoryStatus.getNbSyncedDays(params.currentTimestampMs),
+                hasCompletedASyncBackward = currentPollHistoryStatus.hasCompletedASyncBackward,
         )
     }
 

vector/src/main/java/im/vector/app/features/roomprofile/polls/list/domain/SyncPollsUseCase.kt

@@ -21,15 +21,22 @@ import org.matrix.android.sdk.api.session.room.poll.LoadedPollsStatus
 import javax.inject.Inject
 
 /**
- * Sync the polls of a given room from last manual loading (see LoadMorePollsUseCase) until now.
+ * Sync the polls of a given room from last manual loading if any (see LoadMorePollsUseCase) until now.
+ * Resume or start loading more to have at least a complete load.
  */
 class SyncPollsUseCase @Inject constructor(
         private val roomPollRepository: RoomPollRepository,
         private val getLoadedPollsStatusUseCase: GetLoadedPollsStatusUseCase,
+        private val loadMorePollsUseCase: LoadMorePollsUseCase,
 ) {
 
     suspend fun execute(roomId: String): LoadedPollsStatus {
         roomPollRepository.syncPolls(roomId)
-        return getLoadedPollsStatusUseCase.execute(roomId)
+        val loadedStatus = getLoadedPollsStatusUseCase.execute(roomId)
+        return if (loadedStatus.hasCompletedASyncBackward) {
+            loadedStatus
+        } else {
+            loadMorePollsUseCase.execute(roomId)
+        }
     }
 }