"""Alembic migration environment"""
from logging.config import fileConfig
from sqlalchemy import pool
from sqlalchemy.engine import Connection
from sqlalchemy.ext.asyncio import async_engine_from_config
from alembic import context
import asyncio
import sys
from pathlib import Path

# Add src/api to path for imports
sys.path.insert(0, str(Path(__file__).parent.parent))

# Import models and config
from models import Base
from config import settings

# Import all models so Alembic can detect them
# from models.user import User
# from models.audit_log import AuditLog
# from models.crossswitch_route import CrossSwitchRoute

# this is the Alembic Config object
config = context.config

# Override sqlalchemy.url with our DATABASE_URL
config.set_main_option("sqlalchemy.url", settings.DATABASE_URL)

# Interpret the config file for Python logging.
if config.config_file_name is not None:
    fileConfig(config.config_file_name)

# add your model's MetaData object here for 'autogenerate' support
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,
        literal_binds=True,
        dialect_opts={"paramstyle": "named"},
    )

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

def do_run_migrations(connection: Connection) -> None:
    """Run migrations with connection"""
    context.configure(connection=connection, target_metadata=target_metadata)

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

async def run_async_migrations() -> None:
    """Run migrations in 'online' mode with async engine"""
    connectable = async_engine_from_config(
        config.get_section(config.config_ini_section, {}),
        prefix="sqlalchemy.",
        poolclass=pool.NullPool,
    )

    async with connectable.connect() as connection:
        await connection.run_sync(do_run_migrations)

    await connectable.dispose()

def run_migrations_online() -> None:
    """Run migrations in 'online' mode."""
    asyncio.run(run_async_migrations())

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