from logging.config import fileConfig

from data.db import engine
from data.models import Base

from alembic import context


"""
    Create migration example:
    > alembic -c alembic/alembic.ini revision --autogenerate -m "Added pool size config to the connection model."

    Migrate example:
    > alembic -c alembic/alembic.ini upgrade head
"""


config = context.config

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

from data.models import User, Query, Connection


target_metadata = Base.metadata


def run_migrations_offline() -> None:
    """
    Run migrations in 'offline' mode.

    This configures the context with just a URL
    and not an Engine, though an Engine is acceptable
    here as well.  By skipping the Engine creation
    we don't even need a DBAPI to be available.

    Calls to context.execute() here emit the given string to the
    script output.

    """
    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()


async def run_migrations_online() -> None:
    """
    Run migrations in 'online' mode.

    In this scenario we need to create an Engine
    and associate a connection with the context.

    """

    connectable = engine
    async with connectable.connect() as connection:
        await connection.run_sync(do_migrations)


def do_migrations(connection):
    context.configure(connection=connection, target_metadata=Base.metadata)

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


if context.is_offline_mode():
    run_migrations_offline()
else:
    import asyncio

    asyncio.run(run_migrations_online())