import { Request, Response, NextFunction } from 'express';
import logger from '../utils/logger.js';
import type { ApiResponse } from '../types/index.js';

/**
 * Global Error Handler Middleware
 */
export function errorHandler(
  error: Error,
  req: Request,
  res: Response,
  _next: NextFunction
): void {
  logger.error('Unhandled error', {
    error: error.message,
    stack: error.stack,
    path: req.path,
    method: req.method,
  });

  const response: ApiResponse<never> = {
    success: false,
    error: {
      code: 'INTERNAL_ERROR',
      message: 'An unexpected error occurred. Please try again later.',
    },
  };

  res.status(500).json(response);
}

/**
 * 404 Not Found Handler
 */
export function notFoundHandler(
  req: Request,
  res: Response
): void {
  const response: ApiResponse<never> = {
    success: false,
    error: {
      code: 'NOT_FOUND',
      message: `Endpoint ${req.method} ${req.path} not found`,
    },
  };

  res.status(404).json(response);
}

export default errorHandler;