from logging.config import fileConfig

from alembic import context
from sqlalchemy import engine_from_config, pool

from app.core.config import settings
from app.db.session import Base

import app.models  # noqa: F401


config = context.config

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

target_metadata = Base.metadata


def get_database_url() -> str:
    configured_url = config.get_main_option("sqlalchemy.url")
    if configured_url:
        return configured_url
    return settings.database_url


def run_migrations_offline() -> None:
    context.configure(
        url=get_database_url(),
        target_metadata=target_metadata,
        literal_binds=True,
        compare_type=True,
    )

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


def run_migrations_online() -> None:
    configuration = config.get_section(config.config_ini_section, {})
    configuration["sqlalchemy.url"] = get_database_url()

    connect_args: dict[str, object] = {}
    if configuration["sqlalchemy.url"].startswith("sqlite"):
        connect_args["check_same_thread"] = False

    connectable = engine_from_config(
        configuration,
        prefix="sqlalchemy.",
        poolclass=pool.NullPool,
        connect_args=connect_args,
    )

    with connectable.connect() as connection:
        context.configure(
            connection=connection,
            target_metadata=target_metadata,
            compare_type=True,
        )

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


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