from logging.config import fileConfig

from alembic import context
from sqlalchemy import engine_from_config, pool

from app.core.config import get_settings
from app.core.database import Base
from app.core.database.safety import validate_platform_migration_target
from app.modules.ai_memory import models as ai_memory_models
from app.modules.audit import models as audit_models
from app.modules.business import models as business_models
from app.modules.events import models as event_models
from app.modules.feishu import models as feishu_models
from app.modules.feishu_users import models as feishu_user_models
from app.modules.observability import models as observability_models
from app.modules.personalization import models as personalization_models
from app.modules.subscriptions import models as subscription_models
from app.modules.workflows import models as workflow_models

config = context.config

if config.config_file_name is not None:
    fileConfig(config.config_file_name)

target_metadata = Base.metadata
settings = get_settings()
validate_platform_migration_target(
    settings.database_url,
    settings.legacy_database_url,
)

# Keep imports referenced so SQLAlchemy model classes register with Base.metadata.
_REGISTERED_MODEL_MODULES = (
    ai_memory_models,
    audit_models,
    business_models,
    event_models,
    feishu_models,
    feishu_user_models,
    observability_models,
    personalization_models,
    subscription_models,
    workflow_models,
)


def run_migrations_offline() -> None:
    context.configure(
        url=settings.database_url,
        target_metadata=target_metadata,
        literal_binds=True,
        dialect_opts={"paramstyle": "named"},
    )

    with context.begin_transaction():
        context.run_migrations()


def run_migrations_online() -> None:
    supplied_connection = config.attributes.get("connection")
    if supplied_connection is not None:
        validate_platform_migration_target(
            supplied_connection.engine.url,
            settings.legacy_database_url,
        )
        context.configure(
            connection=supplied_connection,
            target_metadata=target_metadata,
        )
        with context.begin_transaction():
            context.run_migrations()
        return

    configuration = config.get_section(config.config_ini_section, {})
    configuration["sqlalchemy.url"] = settings.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)
        with context.begin_transaction():
            context.run_migrations()


if context.is_offline_mode():
    run_migrations_offline()
else:
    run_migrations_online()