/**
 * 获取用户信息示例函数
 * 
 * 功能：
 * - 从 HTTP header 中获取云托管相关信息
 * - 从环境变量中获取云函数配置信息
 * - 演示如何在云函数中使用免登录能力
 * 
 * 示例：
 * - GET /user/info
 */
exports.getUserInfo = async function getUserInfo(event, context) {
  console.log('[getUserInfo] 函数调用开始', {
    ctxId: context?.ctxId,
    eventID: context?.eventID,
    timestamp: new Date().toISOString(),
  });

  // 从 HTTP header 中获取云托管相关信息
  const envId = context.headers['xhs-cloud-env-id'];
  const functionId = context.headers['xhs-cloud-function-id'];
  const appId = context.headers['xhs-app-id'];

  if (!envId) {
    console.log('[getUserInfo] 错误：xhs-cloud-env-id 为空');
    return {
      ok: false,
      code: 400,
      message: "MISSING_ENV_ID",
      detail: "xhs-cloud-env-id 为空",
    };
  }

  // 从环境变量获取云函数配置信息
  const cloudEnvId = process.env.XHS_CLOUD_ENV_ID;
  const cloudFunctionId = process.env.XHS_CLOUD_FUNCTION_ID;
  const cloudEnvVersion = process.env.XHS_CLOUD_ENV_VERSION;
  const appIdFromEnv = process.env.XHS_APP_ID;

  console.log('[getUserInfo] 获取到的信息', {
    headers: {
      envId,
      functionId,
      appId,
    },
    envVars: {
      cloudEnvId,
      cloudFunctionId,
      cloudEnvVersion,
      appIdFromEnv,
    },
  });

  return {
    ok: true,
    code: 0,
    message: "GET_USER_INFO_OK",
    data: {
      headers: {
        envId,
        functionId,
        appId,
      },
      envVars: {
        cloudEnvId,
        cloudFunctionId,
        cloudEnvVersion,
        appIdFromEnv,
      },
      note: "这些信息可以直接用于业务逻辑，无需额外的登录流程",
    },
    contentType: "application/json",
    meta: {
      ctxId: context.ctxId,
      eventID: context.eventID,
      eventType: context.eventType,
    },
  };
};