Soft-delete meals

meals/db.py

@@ -36,7 +36,8 @@ async def create(conn):
         CREATE TABLE IF NOT EXISTS Meal (
             id INTEGER PRIMARY KEY,
             suggested_date TEXT,
-            consumed_date TEXT
+            consumed_date TEXT,
+            deleted_date TEXT DEFAULT NULL
         );''')
     
     await conn.execute('''
@@ -122,7 +123,7 @@ async def find_meal_by_id(conn, meal_id: int) -> Meal:
 async def find_upcoming_meals_by_date_range(conn, start: datetime, end: datetime) -> AsyncIterator[Meal]:
     async with conn.execute(f'''
         SELECT {','.join(Meal.KEYS)} FROM Meal
-        WHERE suggested_date >= ? AND suggested_date <= ? AND consumed_date IS NULL
+        WHERE suggested_date >= ? AND suggested_date <= ? AND consumed_date IS NULL AND deleted_date IS NULL
     ''', (start, end)) as cursor:
         async for row in cursor:
             yield await with_purchase_date(conn, Meal(**{k:v for k,v in zip(Meal.KEYS, row)}))
@@ -162,24 +163,10 @@ async def load_extra_ingredients(conn, meal: Meal) -> None:
 
 async def delete_meal(conn, meal_id: int) -> None:
     await conn.execute('''
-        DELETE FROM MealParticipant
+        UPDATE Meal
-        WHERE meal_id = ?
+        SET deleted_date = ?
-    ''', (meal_id,))
-
-    await conn.execute('''
-        DELETE FROM MealRecipe
-        WHERE meal_id = ?
-    ''', (meal_id,))
-
-    await conn.execute('''
-        DELETE FROM Ingredient
-        WHERE meal_id = ?
-    ''', (meal_id,))
-
-    await conn.execute('''
-        DELETE FROM Meal
         WHERE id = ?
-    ''', (meal_id,))
+    ''', (datetime.datetime.now(), meal_id))
 
 async def sync_extra_ingredients(conn, meal_id: int, ingredients: List[Ingredient]) -> None:
     await delete_ingredients_by_meal_id(conn, meal_id)