import type { Request, Response, NextFunction } from 'express';
import { AppError } from '../errors/app-error.js';
import { sendError } from './response.js';

export function errorHandler(err: Error, _req: Request, res: Response, _next: NextFunction): void {
  if (err instanceof AppError) {
    sendError(res, err.statusCode, err.errorCode, err.message, err.details);
    return;
  }

  console.error('[ErrorHandler] 未预期的服务器错误:', err);
  const message =
    process.env.NODE_ENV === 'production'
      ? '服务器内部错误'
      : err.message || '服务器内部错误';
  sendError(res, 500, 'INTERNAL_ERROR', message);
}