import QR from '../../utils/qrcode'

let app = getApp();
Page({
  data: {
    authorizeVisible: false,
    userInfo: {},
    qrImagePath: "",
    imageUrl: "",
  },
  onShareAppMessage() {},
  showAuth() {
    this.setData({
      authorizeVisible: true
    })
  },
  onLoad(options) {
    this.initData();
  },
  initData() {
    this.queryMember().then((result) => {

    });
  },
  /**
   * 获取会员信息
   */
  queryMember() {
    let _this = this;
    return new Promise((resolve, reject) => {
      app.post({
        url: app.api.member,
        data: {}
      }).then((result) => {
        let userInfo = result
        _this.setData({
          userInfo: userInfo,
          qrImagePath: userInfo.memberUrl,
        })

        wx.downloadFile({
          url: userInfo.memberUrl,
          success(res) {
            if (res.statusCode === 200) {
              _this.setData({
                imageUrl: res.tempFilePath
              })
            }
          }
        })

        // 生成个人二维码
        // let tlMemberCode = userInfo.memberCode;
        // let qrSize = this.setCanvasSize(440);
        // let codeContent = `tlMemberCode=${tlMemberCode}`
        // this.createQrCode(codeContent, 'qrcanvas', qrSize.w, qrSize.h);

        resolve();
      })
    });
  },

  createQrCode(content, canvasId, cavW, cavH) {
    //调用插件中的draw方法，绘制二维码图片
    QR.api.draw(content, canvasId, cavW, cavH);
    this.canvasToTempImage(canvasId);
  },
  //获取临时缓存图片路径，存入data中
  canvasToTempImage(canvasId) {
    let that = this;
    wx.canvasToTempFilePath({
      canvasId, // 这里canvasId即之前创建的canvas-id
      success: function (res) {
        let tempFilePath = res.tempFilePath;
        console.log(tempFilePath);
        that.setData({ // 如果采用mpvue,即 this.imagePath = tempFilePath
          qrImagePath: tempFilePath,
        });
      },
      fail: function (res) {
        console.log(res);
      }
    });
  },
  //适配不同屏幕大小的canvas
  setCanvasSize(sz) {
    var size = {};
    try {
      var res = wx.getSystemInfoSync();
      var scale = 750 / sz; //不同屏幕下canvas的适配比例；设计稿是750宽
      var width = res.windowWidth / scale;
      var height = width; //canvas画布为正方形
      size.w = width;
      size.h = height;
    } catch (e) {
      // Do something when catch error
      console.log("获取设备信息失败" + e);
    }
    return size;
  },

  /**
   * 保存图片到本地
   */
  saveImageToPhotosAlbum() {
    console.log("saveImageToPhotosAlbum");
    let _this = this;
    if (!_this.data.imageUrl) {
      wx.showToast({
        title: "图片加载中,请重试",
        icon: "none"
      })
      return;
    }
    wx.saveImageToPhotosAlbum({
      filePath: _this.data.imageUrl,
      success(res) {
        wx.showToast({
          title: '保存成功',
          icon: 'success'
        });
      },
      fail(err) {
        wx.getSetting({
          success: (res) => {
            if (!res.authSetting['scope.writePhotosAlbum']) {
              // 未授权
              wx.showModal({
                title: '提示',
                content: '小程序请求访问相册权限',
                confirmText: '前往授权',
                success(res) {
                  if (res.confirm) {
                    wx.openSetting({
                      success(res) {}
                    })
                  } else if (res.cancel) {}
                }
              })
            }
          }
        })
      }
    })
  },
})