# Alembic env.py — подключение к БД через Settings.

import os
import sys
from logging.config import fileConfig

from alembic import context
from sqlalchemy import engine_from_config, pool

# Добавляем корень проекта в sys.path
sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))

from iaai_scraper.core.config import Settings
from iaai_scraper.storage.models import Base

config = context.config
VERSION_TABLE = "iaai_parser_alembic_version"

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

# Подставляем URL из Settings (env vars имеют приоритет)
settings = Settings()
config.set_main_option("sqlalchemy.url", settings.database.url)

target_metadata = Base.metadata


def run_migrations_offline() -> None:
    # Run migrations in 'offline' mode.
    url = config.get_main_option("sqlalchemy.url")
    context.configure(
        url=url,
        target_metadata=target_metadata,
        version_table=VERSION_TABLE,
        literal_binds=True,
        dialect_opts={"paramstyle": "named"},
    )
    with context.begin_transaction():
        context.run_migrations()


def run_migrations_online() -> None:
    # Run migrations in 'online' mode.
    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,
            version_table=VERSION_TABLE,
        )
        with context.begin_transaction():
            context.run_migrations()


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