fix by codex

LichessClientTG_bot/database.py

@@ -64,6 +64,7 @@ class Database:
                     token TEXT,
                     is_active BOOLEAN DEFAULT FALSE,
                     period_minutes INTEGER DEFAULT 0,
+                    last_period_end_ts INTEGER,
                     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
                     FOREIGN KEY (user_id) REFERENCES telegram_users(user_id),
                     FOREIGN KEY (gamer_id) REFERENCES gamers(id),
@@ -77,6 +78,13 @@ class Database:
             except sqlite3.OperationalError:
                 # Column already exists
                 pass
+
+            # Add last_period_end_ts column to persist periodic checkpoint across restarts
+            try:
+                cursor.execute("ALTER TABLE user_gamers ADD COLUMN last_period_end_ts INTEGER")
+            except sqlite3.OperationalError:
+                # Column already exists
+                pass
             
             # Create admin_settings table for admin bot configuration
             cursor.execute('''
@@ -326,6 +334,39 @@ class Database:
                 (period_minutes, user_id, gamer_id)
             )
             conn.commit()
+
+    def get_period_checkpoint(self, user_id: int, gamer_id: int) -> Optional[int]:
+        """Get persisted period checkpoint timestamp (seconds since epoch)."""
+        with sqlite3.connect(self.db_path) as conn:
+            cursor = conn.cursor()
+            cursor.execute(
+                "SELECT last_period_end_ts FROM user_gamers WHERE user_id = ? AND gamer_id = ?",
+                (user_id, gamer_id)
+            )
+            row = cursor.fetchone()
+            if not row or row[0] is None:
+                return None
+            return int(row[0])
+
+    def set_period_checkpoint(self, user_id: int, gamer_id: int, checkpoint_ts: int):
+        """Persist period checkpoint timestamp (seconds since epoch)."""
+        with sqlite3.connect(self.db_path) as conn:
+            cursor = conn.cursor()
+            cursor.execute(
+                "UPDATE user_gamers SET last_period_end_ts = ? WHERE user_id = ? AND gamer_id = ?",
+                (checkpoint_ts, user_id, gamer_id)
+            )
+            conn.commit()
+
+    def clear_period_checkpoint(self, user_id: int, gamer_id: int):
+        """Clear persisted period checkpoint."""
+        with sqlite3.connect(self.db_path) as conn:
+            cursor = conn.cursor()
+            cursor.execute(
+                "UPDATE user_gamers SET last_period_end_ts = NULL WHERE user_id = ? AND gamer_id = ?",
+                (user_id, gamer_id)
+            )
+            conn.commit()
     
     def remove_user_gamer(self, user_id: int, gamer_id: int) -> bool:
         """Remove gamer from user's tracked list"""