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server/alembic/env.py

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+# Created by: Claude
+# Date: 2026-01-02
+# Purpose: Configuration de l'environnement Alembic
+# Refs: server/CLAUDE.md
+
+from logging.config import fileConfig
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+from alembic import context
+import sys
+from pathlib import Path
+
+# Ajouter le dossier src au path
+sys.path.insert(0, str(Path(__file__).parent.parent))
+
+from src.db.base import Base
+from src.db.models import User, Device, Room, RoomMember, Message, P2PSession
+from src.config import settings
+
+# Alembic Config object
+config = context.config
+
+# Interpréter le fichier de configuration pour les loggers
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+# Métadonnées des modèles pour autogenerate
+target_metadata = Base.metadata
+
+# Overrider l'URL de la DB depuis les settings
+config.set_main_option("sqlalchemy.url", settings.database_url)
+
+
+def run_migrations_offline() -> None:
+    """
+    Exécuter les migrations en mode 'offline'.
+    Configure le contexte avec juste une URL, sans créer d'Engine.
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online() -> None:
+    """
+    Exécuter les migrations en mode 'online'.
+    Crée un Engine et associe une connexion au contexte.
+    """
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection, target_metadata=target_metadata
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

server/alembic/script.py.mako

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+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision = ${repr(up_revision)}
+down_revision = ${repr(down_revision)}
+branch_labels = ${repr(branch_labels)}
+depends_on = ${repr(depends_on)}
+
+
+def upgrade() -> None:
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    ${downgrades if downgrades else "pass"}