import asyncio
import os
from logging.config import fileConfig

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

from alembic import context

from thoughtsync.models import Base
import thoughtsync.models.all  # noqa: F401  — registers every model on Base.metadata

config = context.config

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

config.set_main_option(
    "sqlalchemy.url",
    os.environ.get("THOUGHTSYNC_DATABASE_URL", config.get_main_option("sqlalchemy.url")),
)

target_metadata = Base.metadata


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


async def run_async_migrations() -> None:
    connectable = async_engine_from_config(
        config.get_section(config.config_ini_section, {}),
        prefix="sqlalchemy.",
        poolclass=pool.NullPool,
    )
    async with connectable.connect() as connection:
        await connection.run_sync(do_run_migrations)
    await connectable.dispose()


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


run_migrations_online()