Fix database migration error for async SQLite connection

- Updated alembic.ini to use the async SQLite driver\n- Updated alembic env.py to support async operations\n- Created storage directory for database files\n- Added .gitignore to exclude temporary files and databases\n\ngenerated with BackendIM... (backend.im)

.gitignore

@@ -0,0 +1,28 @@
+# Python cache files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# Distribution / packaging
+dist/
+build/
+*.egg-info/
+
+# Virtual environments
+venv/
+env/
+.env/
+
+# SQLite databases
+*.sqlite
+*.sqlite3
+*.db
+
+# IDE directories
+.idea/
+.vscode/
+*.swp
+*.swo
+
+# Local storage directory
+/app/storage/

alembic.ini

@@ -39,7 +39,7 @@ prepend_sys_path = .
 # are written from script.py.mako
 # output_encoding = utf-8
 
-sqlalchemy.url = sqlite:////app/storage/db/db.sqlite
+sqlalchemy.url = sqlite+aiosqlite:////app/storage/db/db.sqlite
 
 
 [post_write_hooks]

alembic/env.py

@@ -6,6 +6,9 @@ from sqlalchemy.engine import Connection
 from sqlalchemy.ext.asyncio import async_engine_from_config
 
 from alembic import context
+import os
+import sys
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
 # this is the Alembic Config object, which provides
 # access to the values within the .ini file in use.
@@ -49,6 +52,7 @@ def run_migrations_offline() -> None:
         target_metadata=target_metadata,
         literal_binds=True,
         dialect_opts={"paramstyle": "named"},
+        render_as_batch=True,
     )
 
     with context.begin_transaction():
@@ -56,7 +60,11 @@ def run_migrations_offline() -> None:
 
 
 def do_run_migrations(connection: Connection) -> None:
-    context.configure(connection=connection, target_metadata=target_metadata)
+    context.configure(
+        connection=connection,
+        target_metadata=target_metadata,
+        render_as_batch=True
+    )
 
     with context.begin_transaction():
         context.run_migrations()