import type { MiddlewareHandler } from 'hono';

/** Guard preview write endpoints before auth/route handlers can perform work. */
export const readOnlyMiddleware: MiddlewareHandler = async (context, next) => {
  if (process.env.DB_READ_ONLY === '1'
    && !['GET', 'HEAD', 'OPTIONS'].includes(context.req.method)) {
    return context.json({ error: '当前为只读预览环境，不允许写入操作' }, 403);
  }
  return next();
};