codex

pricewatch/app/db/migrations/env.py

@@ -0,0 +1,80 @@
+"""
+Configuration Alembic pour PriceWatch.
+
+Recupere l'URL DB depuis AppConfig pour garantir un setup coherent.
+"""
+
+from logging.config import fileConfig
+
+from alembic import context
+from sqlalchemy import engine_from_config, pool
+
+from pricewatch.app.core.config import get_config
+from pricewatch.app.db.models import Base
+
+# Alembic Config object
+config = context.config
+
+# Configure logging
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+# Metadata SQLAlchemy pour autogenerate
+target_metadata = Base.metadata
+
+
+def _get_database_url() -> str:
+    """Construit l'URL DB depuis la config applicative."""
+    app_config = get_config()
+    return app_config.db.url
+
+
+def run_migrations_offline() -> None:
+    """
+    Execute les migrations en mode offline.
+
+    Configure le contexte avec l'URL DB sans creer d'engine.
+    """
+    url = _get_database_url()
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+        compare_type=True,
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online() -> None:
+    """
+    Execute les migrations en mode online.
+
+    Cree un engine SQLAlchemy et etablit la connexion.
+    """
+    configuration = config.get_section(config.config_ini_section) or {}
+    configuration["sqlalchemy.url"] = _get_database_url()
+
+    connectable = engine_from_config(
+        configuration,
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection,
+            target_metadata=target_metadata,
+            compare_type=True,
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()