SekiPOS server sync

core/db.py

@@ -66,6 +66,49 @@ def init_db(db_file):
                          subtotal REAL,
                          FOREIGN KEY(ticket_id) REFERENCES debtor_tickets(id) ON DELETE CASCADE)''')
         
+        conn.execute('''CREATE TABLE IF NOT EXISTS sync_deletions
+                        (id INTEGER PRIMARY KEY AUTOINCREMENT,
+                         entity_type TEXT NOT NULL,
+                         entity_uuid TEXT NOT NULL,
+                         deleted_at TEXT DEFAULT (datetime('now')),
+                         synced_at TEXT)''')
+        
+        # --- MIGRATIONS ---
+        for stmt in [
+            "ALTER TABLE sales ADD COLUMN uuid TEXT",
+            "ALTER TABLE sales ADD COLUMN synced_at TEXT",
+            "ALTER TABLE products ADD COLUMN updated_at TEXT DEFAULT CURRENT_TIMESTAMP",
+            "ALTER TABLE products ADD COLUMN updated_by TEXT",
+            "ALTER TABLE expenses ADD COLUMN uuid TEXT",
+            "ALTER TABLE expenses ADD COLUMN synced_at TEXT",
+            "ALTER TABLE debtors ADD COLUMN uuid TEXT",
+            "ALTER TABLE debtors ADD COLUMN updated_at TEXT DEFAULT CURRENT_TIMESTAMP",
+            "ALTER TABLE debtors ADD COLUMN updated_by TEXT",
+            "ALTER TABLE debtor_tickets ADD COLUMN uuid TEXT",
+            "ALTER TABLE debtor_tickets ADD COLUMN updated_at TEXT DEFAULT CURRENT_TIMESTAMP",
+            "ALTER TABLE debtor_tickets ADD COLUMN updated_by TEXT",
+            "ALTER TABLE dicom ADD COLUMN uuid TEXT",
+            "ALTER TABLE dicom ADD COLUMN updated_at TEXT DEFAULT CURRENT_TIMESTAMP",
+            "ALTER TABLE dicom ADD COLUMN updated_by TEXT",
+        ]:
+            try:
+                conn.execute(stmt)
+            except Exception:
+                pass
+
+        for tbl in ['products', 'debtors', 'debtor_tickets', 'dicom']:
+            conn.execute(f"UPDATE {tbl} SET updated_at = datetime('now') WHERE updated_at IS NULL")
+
+        for idx in [
+            "CREATE UNIQUE INDEX IF NOT EXISTS idx_debtors_uuid ON debtors(uuid)",
+            "CREATE UNIQUE INDEX IF NOT EXISTS idx_dicom_uuid ON dicom(uuid)",
+            "CREATE UNIQUE INDEX IF NOT EXISTS idx_expenses_uuid ON expenses(uuid)",
+        ]:
+            try:
+                conn.execute(idx)
+            except Exception:
+                pass
+
         user = conn.execute('SELECT * FROM users WHERE username = ?', ('admin',)).fetchone()
         if not user:
             from werkzeug.security import generate_password_hash