import os
import sys
from logging.config import fileConfig

from sqlalchemy import engine_from_config
from sqlalchemy import pool

from alembic import context

# Add the parent directory to the path so we can import our modules
sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..'))

# Import the Base class and all models
from shared.database.base import Base
from app.models.recipes import *

# this is the Alembic Config object, which provides
# access to the values within the .ini file in use.
config = context.config

# Interpret the config file for Python logging.
# This line sets up loggers basically.
if config.config_file_name is not None:
    fileConfig(config.config_file_name)

# Set the target metadata
target_metadata = Base.metadata

def get_database_url():
    """Get database URL from environment or config"""
    return os.getenv('RECIPES_DATABASE_URL', config.get_main_option("sqlalchemy.url"))

def run_migrations_offline() -> None:
    """Run migrations in 'offline' mode."""
    url = get_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 run_migrations_online() -> None:
    """Run migrations in 'online' mode."""
    configuration = config.get_section(config.config_ini_section)
    configuration["sqlalchemy.url"] = get_database_url()
    
    connectable = engine_from_config(
        configuration,
        prefix="sqlalchemy.",
        poolclass=pool.NullPool,
    )

    with connectable.connect() as connection:
        context.configure(
            connection=connection, 
            target_metadata=target_metadata
        )

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


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