app/sheep/platform/share.js

import $store from '@/sheep/store';
import $platform from '@/sheep/platform';
import $router from '@/sheep/router';
import $url from '@/sheep/url';
// #ifdef H5
import $wxsdk from '@/sheep/libs/sdk-h5-weixin';
// #endif

// 设置分享的平台渠道: 1=H5,2=微信公众号网页,3=微信小程序,4=App,...按需扩展
const platformMap = ['H5', 'WechatOfficialAccount', 'WechatMiniProgram', 'App'];

// 设置分享方式: 1=直接转发,2=海报,3=复制链接,...按需扩展
const fromMap = ['forward', 'poster', 'link'];

// TODO 芋艿：分享的接入
// 设置分享信息参数
const getShareInfo = (
  scene = {
    title: '', // 自定义分享标题
    desc: '', // 自定义描述
    image: '', // 自定义分享图片
    path: '', // 页面基础路径，不要以 / 开头
    params: {}, // 自定义分享参数
  },
  poster = {
    // 自定义海报数据
    type: 'user',
  },
) => {
  const shareInfo = {
    title: '', // 分享标题
    desc: '', // 描述
    image: '', // 分享图片
    path: '', // 分享页面+参数
    link: '', // 分享Url+参数
    query: '', // 分享参数
    poster, // 海报所需数据
  };

  const app = $store('app');
  const shareConfig = app.platform.share;

  // 自动拼接分享用户参数
  const query = buildSpmQuery(scene.params);
  shareInfo.query = query;

  // 配置分享链接地址
  shareInfo.link = buildSpmLink(query, shareConfig.linkAddress);

  // 配置转发参数
  if (shareConfig.methods.includes('forward')) {
    // TODO puhui999: forward 这块有点问题
    if (shareConfig.forwardInfo.title === '' || shareConfig.forwardInfo.image === '') {
      console.log('请在平台设置中配置转发信息');
    }
    // 设置自定义分享信息
    shareInfo.title = scene.title || shareConfig.forwardInfo.title;
    shareInfo.image = $url.cdn(scene.image || shareConfig.forwardInfo.image);
    shareInfo.desc = scene.desc || shareConfig.forwardInfo.subtitle;
    shareInfo.path = buildSpmPath(scene.path, query);
  }
  shareInfo.path = scene.path;
  console.log('shareInfo', shareInfo);
  return shareInfo;
};

// 构造spm分享参数
const buildSpmQuery = (params) => {
  const user = $store('user');
  let shareId = '0'; // 设置分享者用户ID
  if (typeof params.shareId === 'undefined') {
    if (user.isLogin) {
      // todo @芋艿 id为空
      shareId = user.userInfo.id;
    }
  }
  let page = '1'; // 页面类型: 1=首页(默认),2=商品,3=拼团商品,4=秒杀商品,5=邀请参团...按需扩展
  if (typeof params.page !== 'undefined') {
    page = params.page;
  }
  let query = '0'; // 设置页面ID: 如商品ID、拼团ID等
  if (typeof params.query !== 'undefined') {
    query = params.query;
  }
  let platform = platformMap.indexOf($platform.name) + 1;
  let from = '1';
  if (typeof params.from !== 'undefined') {
    from = platformMap.indexOf(params.from) + 1;
  }
  //spmParams = ...  可按需扩展
  return `spm=${shareId}.${page}.${query}.${platform}.${from}`;
};

// 构造页面分享参数
const buildSpmPath = (path, query) => {
  return `/${path}?${query}`;
};

// 构造分享链接
const buildSpmLink = (query, linkAddress = '') => {
  return `${linkAddress}?${query}`;
};

// 解析Spm
const decryptSpm = (spm) => {
  const user = $store('user');
  let shareParamsArray = spm.split('.');
  let shareParams = {
    spm,
    shareId: 0,
    page: '',
    query: {},
    platform: '',
    from: '',
  };
  let query;
  shareParams.shareId = shareParamsArray[0];
  switch (shareParamsArray[1]) {
    case '1':
      // 默认首页不跳转
      shareParams.page = '/pages/index/index';
      break;
    case '2':
      // 普通商品
      shareParams.page = '/pages/goods/index';
      shareParams.query = {
        id: shareParamsArray[2],
      };
      break;
    case '3':
      // 拼团商品
      shareParams.page = '/pages/goods/groupon';
      query = shareParamsArray[2].split(',');
      shareParams.query = {
        id: query[0],
        activity_id: query[1], // TODO 芋艿：接入分享后，应该统一成 id 参数
      };
      break;
    case '4':
      // 秒杀商品
      shareParams.page = '/pages/goods/seckill';
      query = shareParamsArray[2].split(',');
      shareParams.query = {
        id: query[1],
      };
      break;
    case '5':
      // 参与拼团
      shareParams.page = '/pages/activity/groupon/detail';
      shareParams.query = {
        id: shareParamsArray[2],
      };
      break;
  }
  shareParams.platform = platformMap[shareParamsArray[3] - 1];
  shareParams.from = fromMap[shareParamsArray[4] - 1];
  if (shareParams.shareId != 0) {
    // 已登录 立即添加分享记录
    if (user.isLogin) {
      user.addShareLog(shareParams);
    } else {
      // 未登录 待用户登录后添加分享记录
      uni.setStorageSync('shareLog', shareParams);
    }
  }

  if (shareParams.page !== '/pages/index/index') {
    $router.go(shareParams.page, shareParams.query);
  }
  return shareParams;
};

// 更新公众号分享sdk
const updateShareInfo = (shareInfo) => {
  // #ifdef H5
  if ($platform.name === 'WechatOfficialAccount') {
    $wxsdk.updateShareInfo(shareInfo);
  }
  // #endif
};

export default {
  getShareInfo,
  updateShareInfo,
  decryptSpm,
};