"""Alembic environment configuration for async SQLAlchemy."""

import asyncio
from logging.config import fileConfig

from sqlalchemy import pool
from sqlalchemy.engine import Connection
from sqlalchemy.ext.asyncio import async_engine_from_config, create_async_engine

from alembic import context

# Import all models so that Base.metadata is fully populated
from app.core.database import Base, engine
from app.models import financial, error_log, request_log, fred_data, filing, finra_short_volume, alpaca_price
from app.models import etf  # ETF models
from app.models import overlay_registry, overlay_raw_event, overlay_feature  # Phase 5 Overlay models
from app.models import attention  # Attention subsystem (event-centric backtest-friendly)

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

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

target_metadata = Base.metadata


def run_migrations_offline() -> None:
    """Run migrations in 'offline' mode."""
    from app.core.config import settings
    url = settings.DATABASE_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:
    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 using the app's async engine."""
    connectable = engine

    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()