"""Alembic environment — подключает модели и настраивает миграции."""
from __future__ import annotations

import os
import sys
from logging.config import fileConfig

from alembic import context
from sqlalchemy import engine_from_config, pool

# Добавляем flask_app в sys.path, чтобы `from app...` работало.
sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..'))

from app.db import get_database_url
from app.models import Base  # noqa: E402 — импорт после sys.path

config = context.config
config.set_main_option('sqlalchemy.url', get_database_url())

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

target_metadata = Base.metadata


def run_migrations_offline() -> None:
    url = config.get_main_option('sqlalchemy.url')
    context.configure(
        url=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:
    connectable = engine_from_config(
        config.get_section(config.config_ini_section, {}),
        prefix='sqlalchemy.',
        poolclass=pool.NullPool,
    )
    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()