Improve delete multiple games in a row.

closes #53

app/src/main/java/me/zobrist/tichucounter/repository/GameRepository.kt

@@ -27,6 +27,8 @@ class GameRepository @Inject constructor(
 
     private val newGameFlow = MutableStateFlow(Game())
 
+    private var deletedGame: GameWithScores? = null
+
     init {
         CoroutineScope(Dispatchers.IO).launch {
             gameDao.getActiveAsFlow().collect {
@@ -104,14 +106,33 @@ class GameRepository @Inject constructor(
         withContext(Dispatchers.IO) {
             try {
                 val game = gameDao.getGameById(uid)
-                gameDao.delete(game)
                 val rounds = roundDao.getAllForGame(game.uid)
+
+                deletedGame = GameWithScores(game, rounds)
+
+                gameDao.delete(game)
                 roundDao.delete(rounds)
             } catch (_: NullPointerException) {
             }
         }
     }
 
+    suspend fun restoreLastDeletedGame() {
+        if (deletedGame == null) {
+            return
+        }
+        val revert = deletedGame!!
+        deletedGame = null
+
+        withContext(Dispatchers.IO) {
+            gameDao.insert(revert.game)
+
+            revert.rounds.forEach {
+                roundDao.insert(it)
+            }
+        }
+    }
+
     suspend fun deleteAllInactive() {
         withContext(Dispatchers.IO) {
             try {

app/src/main/java/me/zobrist/tichucounter/ui/history/HistoryView.kt

@@ -95,6 +95,7 @@ fun HistoryList(
                 viewModel.activateGame(it)
                 lazyListState.animateScrollToItem(0)
 
+                snackbarHostState.currentSnackbarData?.dismiss()
                 val result = snackbarHostState.showSnackbar(
                     message = activatedMessage,
                     actionLabel = activatedActionLabel,
@@ -108,7 +109,9 @@ fun HistoryList(
         },
         onDeleteClicked = {
             scope.launch {
-                viewModel.markToDelete(it)
+                viewModel.deleteGame(it)
+
+                snackbarHostState.currentSnackbarData?.dismiss()
                 val result = snackbarHostState.showSnackbar(
                     message = deletedMessage,
                     actionLabel = deletedActionLabel,
@@ -118,7 +121,7 @@ fun HistoryList(
                 if (result == SnackbarResult.Dismissed) {
                     viewModel.deleteGame(it)
                 } else {
-                    viewModel.unmarkToDelete(it)
+                    viewModel.restoreLastDeletedGame()
                 }
             }
         },

app/src/main/java/me/zobrist/tichucounter/ui/history/HistoryViewModel.kt

@@ -33,20 +33,18 @@ class HistoryViewModel @Inject constructor(
         }
     }
 
-    fun markToDelete(gameId: Long) {
-        gameAndHistory = fullList.filter { it.game.uid != gameId }
-    }
-
-    fun unmarkToDelete(gameId: Long) {
-        gameAndHistory = fullList
-    }
-
     fun deleteGame(gameId: Long) {
         viewModelScope.launch {
             gameRepository.deleteGame(gameId)
         }
     }
 
+    fun restoreLastDeletedGame() {
+        viewModelScope.launch {
+            gameRepository.restoreLastDeletedGame()
+        }
+    }
+
     fun activateGame(gameId: Long) {
         viewModelScope.launch {
             gameRepository.setActive(gameId)