src/middleware/errorHandler.ts

/**
 * 错误处理中间件
 */
import { Request, Response, NextFunction } from 'express';

export function errorHandler(
  err: Error,
  req: Request,
  res: Response,
  next: NextFunction
): void {
  console.error('[Error]', err.message, err.stack);

  // 根据错误类型返回不同状态码
  const status = (err as any).status || 500;

  res.status(status).json({
    error: err.name || 'InternalError',
    message: err.message,
    timestamp: Date.now(),
  });
}

// 异步错误捕获包装器
export function asyncHandler(fn: (req: Request, res: Response, next: NextFunction) => Promise<any>) {
  return (req: Request, res: Response, next: NextFunction) => {
    Promise.resolve(fn(req, res, next)).catch(next);
  };
}