from logging.config import fileConfig
from sqlalchemy import engine_from_config, pool
from alembic import context
import sys
import os

sys.path.insert(0, os.path.dirname(os.path.dirname(__file__)))
from app.core.config import get_settings
from app.core.database import Base
from app.models import *  # noqa

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

# Override sqlalchemy.url from app settings (supports .env override)
app_settings = get_settings()
config.set_main_option("sqlalchemy.url", app_settings.DATABASE_URL_SYNC)

target_metadata = Base.metadata


def run_migrations_offline():
    url = config.get_main_option("sqlalchemy.url")
    context.configure(url=url, target_metadata=target_metadata, literal_binds=True)
    with context.begin_transaction():
        context.run_migrations()


def run_migrations_online():
    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,
            render_as_batch=True,
        )
        with context.begin_transaction():
            context.run_migrations()


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