VIDEO NOT IMAGES + history4all

db/mysql.py

@@ -122,10 +122,13 @@ class MySQLRepository:
         conn.close()
         return [DetectionRecord(**r) for r in rows]
 
-    def clear_detections(self, user_id: int) -> int:
+    def clear_detections(self, user_id: Optional[int] = None) -> int:
         conn = self._connect()
         cursor = conn.cursor()
-        cursor.execute("DELETE FROM detections WHERE user_id = %s", (user_id,))
+        if user_id is None:
+            cursor.execute("DELETE FROM detections")
+        else:
+            cursor.execute("DELETE FROM detections WHERE user_id = %s", (user_id,))
         conn.commit()
         count = cursor.rowcount
         conn.close()

db/repository.py

@@ -59,8 +59,8 @@ class Repository(Protocol):
         """Get detection history, optionally filtered by user. Newest first."""
         ...
 
-    def clear_detections(self, user_id: int) -> int:
-        """Delete all detections for a user. Returns number of rows deleted."""
+    def clear_detections(self, user_id: Optional[int] = None) -> int:
+        """Delete detections, optionally filtered by user. Returns rows deleted."""
         ...
 
     def close(self) -> None:

db/sqlite.py

@@ -109,9 +109,14 @@ class SQLiteRepository:
             ).fetchall()
         return [DetectionRecord(**dict(r)) for r in rows]
 
-    def clear_detections(self, user_id: int) -> int:
+    def clear_detections(self, user_id: Optional[int] = None) -> int:
         conn = self._get_conn()
-        cursor = conn.execute("DELETE FROM detections WHERE user_id = ?", (user_id,))
+        if user_id is None:
+            cursor = conn.execute("DELETE FROM detections")
+        else:
+            cursor = conn.execute(
+                "DELETE FROM detections WHERE user_id = ?", (user_id,)
+            )
         conn.commit()
         return cursor.rowcount