import asyncio
import os
import sys
from logging.config import fileConfig

from alembic import context
from sqlalchemy.ext.asyncio import create_async_engine

sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", "src"))

from rehearsalhub.db.models import Base

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

target_metadata = Base.metadata


def get_url() -> str:
    return os.environ.get("DATABASE_URL", config.get_main_option("sqlalchemy.url"))  # type: ignore


def run_migrations_offline() -> None:
    context.configure(
        url=get_url(),
        target_metadata=target_metadata,
        literal_binds=True,
        dialect_opts={"paramstyle": "named"},
    )
    with context.begin_transaction():
        context.run_migrations()


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


async def run_migrations_online() -> None:
    url = get_url()
    connectable = create_async_engine(url, future=True)
    async with connectable.connect() as connection:
        await connection.run_sync(do_run_migrations)
    await connectable.dispose()


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