"""
Simbrella FirstAdvance API Flask Implementation
This module serves as the entry point for the Flask application.
"""
from flask import Flask
from flask.typing import ResponseReturnValue
from config import Config
from app.routes import register_blueprints
from app.middleware import register_middleware
import logging

def create_app(config_class=Config) -> Flask:
    """
    Factory pattern to create the Flask application.

    Args:
        config_class: Configuration class to use

    Returns:
        Flask application instance
    """
    app = Flask(__name__)
    app.config.from_object(config_class)

    # Configure logging
    logging.basicConfig(
        level=logging.INFO,
        format='%(asctime)s - %(name)s - %(levelname)s - %(message)s'
    )

    # Register middleware
    register_middleware(app)

    # Register blueprints
    register_blueprints(app)

    # Register error handlers
    @app.errorhandler(400)
    def bad_request(error) -> ResponseReturnValue:
        return {"resultCode": "400", "resultDescription": f"Bad request: {str(error)}"}, 400

    @app.errorhandler(404)
    def not_found(error) -> ResponseReturnValue:
        return {"resultCode": "404", "resultDescription": "Resource not found"}, 404

    @app.errorhandler(422)
    def validation_error(error) -> ResponseReturnValue:
        return {"resultCode": "422", "resultDescription": f"Validation error: {str(error)}"}, 422

    @app.errorhandler(500)
    def server_error(error) -> ResponseReturnValue:
        return {"resultCode": "500", "resultDescription": "Internal server error"}, 500

    return app

if __name__ == '__main__':
    app = create_app()
    port = app.config.get('PORT', 5000)
    app.run(debug=app.config.get('DEBUG', False), host='0.0.0.0', port=port)