Added alembic configuration

alembic/env.py

@@ -0,0 +1,64 @@
+import asyncio
+from logging.config import fileConfig
+
+from sqlalchemy import pool
+from sqlalchemy.ext.asyncio import AsyncEngine, create_async_engine
+
+from alembic import context
+
+# Import your app's config & models
+from app.core.config import settings
+from app.db.base import Base  # imports all models via app/models/__init__.py
+
+# Alembic Config object
+config = context.config
+
+# Set up Python logging from alembic.ini
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+# Target metadata (for autogenerate)
+target_metadata = Base.metadata
+
+# DSN from your app config (e.g. postgresql+asyncpg://…)
+DB_URL = settings.POSTGRES_DSN
+
+
+def run_migrations_offline():
+    """Run migrations in 'offline' mode."""
+    url = DB_URL
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def do_run_migrations(connection):
+    context.configure(connection=connection, target_metadata=target_metadata)
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+async def run_migrations_online():
+    """Run migrations in 'online' mode with async engine."""
+    connectable: AsyncEngine = create_async_engine(
+        DB_URL,
+        poolclass=pool.NullPool,
+    )
+
+    async with connectable.connect() as connection:
+        await connection.run_sync(do_run_migrations)
+
+    await connectable.dispose()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    asyncio.run(run_migrations_online())