from __future__ import annotations

from logging.config import fileConfig

from alembic import context
from flask import current_app

config = context.config

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

target_db = current_app.extensions["migrate"].db
target_metadata = target_db.metadata


def get_engine():
    try:
        return target_db.get_engine()
    except TypeError:
        return target_db.engine


def get_engine_url() -> str:
    return str(get_engine().url).replace("%", "%%")


def run_migrations_offline() -> None:
    context.configure(
        url=get_engine_url(),
        target_metadata=target_metadata,
        literal_binds=True,
        dialect_opts={"paramstyle": "named"},
        compare_type=True,
    )

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


def run_migrations_online() -> None:
    with get_engine().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()