create-hest-app/templates/cqrs_scalar/src/common/middleware/index.ts

Create HestJS-powered applications with one command

import type { Context, Next } from 'hono';
import type { StatusCode } from 'hono/utils/http-status';
import { logger } from '@hestjs/logger';

/**
 * Hono 异常处理中间件
 */
export const exceptionMiddleware = async (c: Context, next: Next) => {
  try {
    await next();
  } catch (error: unknown) {
    const err = error as { status?: number; message?: string; error?: string; stack?: string };
    const statusCode = err.status || 500;
    
    const validStatus: StatusCode = (statusCode >= 100 && statusCode < 600) 
      ? statusCode as StatusCode 
      : 500;
    
    const response = {
      statusCode: validStatus,
      timestamp: new Date().toISOString(),
      path: c.req.url,
      message: err.message || 'Internal Server Error',
      error: err.error || 'Exception',
    };

    logger.error(`🔥 HTTP Exception [${validStatus}]: ${err.message}`, {
      requestUrl: c.req.url,
      stack: err.stack,
    });

    c.status(validStatus);
    return c.json(response);
  }
};

/**
 * 响应包装中间件
 */
export const responseMiddleware = async (c: Context, next: Next) => {
  const start = Date.now();
  
  await next();
  
  // 只包装JSON响应
  if (c.res.headers.get('content-type')?.includes('application/json')) {
    const duration = Date.now() - start;
    const originalResponse = await c.res.json();
    
    const wrappedResponse = {
      success: true,
      data: originalResponse,
      timestamp: new Date().toISOString(),
      duration: `${duration}ms`,
    };
    
    return c.json(wrappedResponse);
  }
};