import asyncio
import sys
from logging.config import fileConfig
from pathlib import Path

from sqlalchemy import pool
from sqlalchemy.engine import Connection
from sqlalchemy.ext.asyncio import async_engine_from_config

from alembic import context

sys.path.insert(0, str(Path(__file__).parent.parent))
from app.config import settings
from app.db import Base
from app.models import *  # noqa: F403 确保所有模型被导入

config = context.config
config.set_main_option("sqlalchemy.url", settings.DATABASE_URL.replace("+asyncpg", ""))

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

target_metadata = Base.metadata


def run_migrations_offline() -> None:
    url = config.get_main_option("sqlalchemy.url")
    context.configure(url=url, target_metadata=target_metadata, literal_binds=True)
    with context.begin_transaction():
        context.run_migrations()


def do_run_migrations(connection: Connection) -> None:
    context.configure(connection=connection, target_metadata=target_metadata)
    with context.begin_transaction():
        context.run_migrations()


async def run_async_migrations() -> None:
    configuration = config.get_section(config.config_ini_section, {})
    configuration["sqlalchemy.url"] = settings.DATABASE_URL
    connectable = async_engine_from_config(configuration, prefix="sqlalchemy.", poolclass=pool.NullPool)
    async with connectable.begin() as conn:
        await conn.run_sync(do_run_migrations)
    await connectable.dispose()


def run_migrations_online() -> None:
    asyncio.run(run_async_migrations())


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