Merge pull request #12 from dessalines/add_stat_clearing

Add stat clearing

Author: dessalines

app/src/main/java/com/dessalines/rankmyfavs/MainActivity.kt

@@ -101,6 +101,7 @@ class MainActivity : AppCompatActivity() {
                             navController = navController,
                             favListViewModel = favListViewModel,
                             favListItemViewModel = favListItemViewModel,
+                            favListMatchViewModel = favListMatchViewModel,
                             id = id,
                         )
                     }

app/src/main/java/com/dessalines/rankmyfavs/db/FavListItem.kt

@@ -133,9 +133,6 @@ interface FavListItemDao {
     @Query("SELECT * FROM FavListItem where id = :favListItemId")
     fun getById(favListItemId: Int): FavListItem
 
-    // TODO
-//    @Query("SELECT * FROM FavListItem where fav_list_id = :favListId ORDER BY RANDOM() LIMIT 2")
-    // The deviation decreases after each
     // The first option is the one with the lowest glicko_deviation, and a stop gap.
     // The second option is a random one.
 
@@ -173,6 +170,18 @@ interface FavListItemDao {
     @Update(entity = FavListItem::class)
     suspend fun updateStats(favListItem: FavListItemUpdateStats)
 
+    @Query(
+        """
+        UPDATE FavListItem
+        SET win_rate = $DEFAULT_WIN_RATE,
+        glicko_rating = $DEFAULT_GLICKO_RATING,
+        glicko_deviation = $DEFAULT_GLICKO_DEVIATION,
+        glicko_volatility = $DEFAULT_GLICKO_VOLATILITY
+        WHERE fav_list_id = :favListId
+    """,
+    )
+    fun clearStatsForList(favListId: Int)
+
     @Delete
     suspend fun delete(favListItem: FavListItem)
 }
@@ -203,6 +212,8 @@ class FavListItemRepository(
     @WorkerThread
     suspend fun updateStats(favListItem: FavListItemUpdateStats) = favListItemDao.updateStats(favListItem)
 
+    fun clearStatsForList(favListId: Int) = favListItemDao.clearStatsForList(favListId)
+
     @WorkerThread
     suspend fun delete(favListItem: FavListItem) = favListItemDao.delete(favListItem)
 }
@@ -233,6 +244,8 @@ class FavListItemViewModel(
             repository.updateStats(favListItem)
         }
 
+    fun clearStatsForList(favListId: Int) = repository.clearStatsForList(favListId)
+
     fun delete(favListItem: FavListItem) =
         viewModelScope.launch {
             repository.delete(favListItem)

app/src/main/java/com/dessalines/rankmyfavs/db/FavListMatch.kt

@@ -89,6 +89,15 @@ interface FavListMatchDao {
 
     @Delete
     suspend fun delete(match: FavListMatch)
+
+    @Query(
+        """
+        DELETE FROM FavListMatch
+        WHERE item_id_1 in ( select id from FavListItem WHERE fav_list_id = :favListId)
+        or item_id_2 in ( select id from FavListItem WHERE fav_list_id = :favListId)
+    """,
+    )
+    suspend fun deleteMatchesForList(favListId: Int)
 }
 
 // Declares the DAO as a private property in the constructor. Pass in the DAO
@@ -104,6 +113,9 @@ class FavListMatchRepository(
 
     @WorkerThread
     suspend fun delete(match: FavListMatch) = favListDao.delete(match)
+
+    @WorkerThread
+    suspend fun deleteMatchesForList(favListId: Int) = favListDao.deleteMatchesForList(favListId)
 }
 
 class FavListMatchViewModel(
@@ -117,6 +129,11 @@ class FavListMatchViewModel(
         viewModelScope.launch {
             repository.delete(match)
         }
+
+    fun deleteMatchesForList(favListId: Int) =
+        viewModelScope.launch {
+            repository.deleteMatchesForList(favListId)
+        }
 }
 
 class FavListMatchViewModelFactory(

app/src/main/java/com/dessalines/rankmyfavs/ui/components/favlist/FavListDetailScreen.kt

@@ -9,6 +9,7 @@ import androidx.compose.foundation.lazy.items
 import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.outlined.Add
+import androidx.compose.material.icons.outlined.ClearAll
 import androidx.compose.material.icons.outlined.Delete
 import androidx.compose.material.icons.outlined.Edit
 import androidx.compose.material.icons.outlined.Reviews
@@ -36,6 +37,7 @@ import com.dessalines.rankmyfavs.R
 import com.dessalines.rankmyfavs.db.FavList
 import com.dessalines.rankmyfavs.db.FavListItem
 import com.dessalines.rankmyfavs.db.FavListItemViewModel
+import com.dessalines.rankmyfavs.db.FavListMatchViewModel
 import com.dessalines.rankmyfavs.db.FavListViewModel
 import com.dessalines.rankmyfavs.db.sampleFavListItem
 import com.dessalines.rankmyfavs.ui.components.common.LARGE_PADDING
@@ -50,6 +52,7 @@ fun FavListDetailScreen(
     navController: NavController,
     favListViewModel: FavListViewModel,
     favListItemViewModel: FavListItemViewModel,
+    favListMatchViewModel: FavListMatchViewModel,
     id: Int,
 ) {
     val ctx = LocalContext.current
@@ -118,6 +121,19 @@ fun FavListDetailScreen(
                             contentDescription = stringResource(R.string.edit_list),
                         )
                     }
+                    val clearStatsMessage = stringResource(R.string.clear_stats)
+                    IconButton(
+                        onClick = {
+                            favListItemViewModel.clearStatsForList(favListId = id)
+                            favListMatchViewModel.deleteMatchesForList(favListId = id)
+                            Toast.makeText(ctx, clearStatsMessage, Toast.LENGTH_SHORT).show()
+                        },
+                    ) {
+                        Icon(
+                            Icons.Outlined.ClearAll,
+                            contentDescription = stringResource(R.string.clear_stats),
+                        )
+                    }
                     val deletedMessage = stringResource(R.string.list_deleted)
                     IconButton(
                         onClick = {

app/src/main/res/values/strings.xml

@@ -44,4 +44,5 @@
     <string name="no_items">No Items. Create one to get started.</string>
     <string name="no_lists">No lists. Create one to get started.</string>
     <string name="what_do_these_numbers_mean">What do these numbers mean?</string>
+    <string name="clear_stats">Clear Stats</string>
 </resources>