shizhong-miniprogram/src/utils/page.ts

/**
 * 使用方法：
 * 1、app.js 引入此文件：const page = require('xx/xx/page);
 * 2、app.js onLaunch 的时候 Page = page
 */

const originalPage = Page;

function page(config: WechatMiniprogram.Page.Instance<WechatMiniprogram.IAnyObject, WechatMiniprogram.IAnyObject>) {
  const originalOnLoad = config.onLoad;
  config.onLoad = function (options) {
    setImageParams(this);
    getApp().getMenuInfo(this);

    if (originalOnLoad) {
      originalOnLoad.call(this, options);
    }
  };

  const originalOnShareAppMessage = config.onShareAppMessage;
  config.onShareAppMessage = function (options) {
    if (originalOnShareAppMessage) {
      return originalOnShareAppMessage.call(this, options);
    } else {
      // const date = new Date();
      // const Timestamp = date.getTime();

      // const pages = getCurrentPages();
      // const currentPage = pages[pages.length - 1];
      // const url = currentPage.route;

      return {
        title: "武田",
        path: "/pages/start/index",
        // imageUrl: `${getApp().globalData.imageUrl}1/1.png?t=${Timestamp}`,
      };
    }
  };

  config.onPageScroll = function (e) {
    const { scrollTop } = e;
    let background = "transparent";
    if (scrollTop > 20) {
      background = "#fff";
    }
    this.setData({
      background,
    });
  };

  return originalPage(config);
}

function setImageParams(
  currPage: WechatMiniprogram.Page.Instance<WechatMiniprogram.IAnyObject, WechatMiniprogram.IAnyObject>,
) {
  const date = new Date();
  const Timestamp = date.getTime();
  currPage.setData({
    imageUrl: getApp().globalData.imageUrl,
    Timestamp,
  });
}

export default page;