Node/Koa2[58]: 判断关注状态

//...
const { getProfileBlogList } = require("../../controller/blog-profile");
const { getFans } = require("../../controller/user-relation");
// 个人主页
//...
router.get("/profile", loginRedirect, async (ctx, next) => {
  const { userName } = ctx.session.userInfo;
  ctx.redirect(`/profile/${userName}`);
});
router.get("/profile/:userName", loginRedirect, async (ctx, next) => {
  // 已经登录用户的信息
  const myUserInfo = ctx.session.userInfo;
  const myUserName = myUserInfo.userName;

  let curUserInfo;
  const { userName: curUserName } = ctx.params;
  const isMe = myUserName === curUserName;
  if (isMe) {
    curUserInfo = myUserInfo;
  } else {
    const existResult = await isExist(curUserName);
    if (existResult.error !== 0) {
      return; // 用户名不存在
    }
    // 用户名存在
    curUserInfo = existResult.data;
  }
  // controller 层
  const result = await getProfileBlogList(curUserName, 0);
  const { isEmpty, blogList, pageSize, pageIndex, count } = result.data;

  // 获取粉丝
  // controller 层
  const fansResult = await getFans(curUserInfo.id);
  const { count: fansCount, userList: fansList } = fansResult.data;

  // 我是否关注了此人?
  const amIFollowed = fansList.some((item) => {
    return item.userName === myUserName;
  });

  await ctx.render("profile", {
    blogData: {
      isEmpty,
      blogList,
      pageSize,
      pageIndex,
      count,
    },
    userData: {
      userInfo: curUserInfo,
      isMe,
      amIFollowed,
      fansData: {
        count: fansCount,
        list: fansList
      },
    },
  });
});
//...