小程序登陆锁-登录逻辑

1、场景 

最近小程序项目中 需要在登录（这里的登录指一进入小程序）小程序时 拿到code（登录凭证） 去换取 用户的 openid（用户的唯一标识）。然后再点击登录时 ，用openid去获取用户信息。但是 会有用户不停连续点击登录按钮的情况存在，会频繁调用userlogin接口。会引发一系列问题，这时 我们需要在 登录时  做个锁 ，在用户第一次登录时，登录按钮为禁用状态。这里为了优化用户体验，用loading 来设置锁。

2、逻辑

进入小程序 —→ 调用wx.login —→ 换取openId —→ 点击登录 —→ 调用wx.getUserInfo授权获取用户信息 —→ success后调用登录接口（获取token等）—→ 获取手机号 —→ 获取地理位置

3、代码

export function login(index) {
    mpvue.login({
      success(res) {
        wx.showLoading({
          title: "疯狂加载中...",
          mask: true,
        });
        mpvue.setStorageSync("code", res.code);
        if (res.code) {
          getOpenId(res.code);
        }
      },
      // 处理登录失败
      fail(res) {
        index++;
        console.log(index,'index+++++')
        if (index < 3) {
          login(index);
        } else {
          wx.showModal({
            title: "提示",

            content: "登录失败，请检查您的当前网络。", //提示错误

            confirmText: "确定",

            confirmColor: "#b8193f",

            showCancel: false,
          });
        }
      },
    });
}

export function getOpenId(code) {
    https.request({
        url: "Welcome/miniAction",
        data: {
          code: code,
        },
        needToken: false,
        // showLoading: true
      })
      .then((ress) => {
        mpvue.hideLoading();
        if (ress.status) {
          let userInfo = getUserInfo();
          userInfo.openid = ress.data.openId;
          userInfo.unionid = ress.data.unionid;
          userInfo.dxOpenid = ress.data.dxOpenid;
          mpvue.setStorageSync('openId',ress.data.openId)
          if (ress.data.userInfo.status) {
            userInfo.userInfo = ress.data.userInfo.status;
            userInfo.mainBureauName = ress.data.userInfo.gis.main_bureau_name;
            userInfo.subBureauName = ress.data.userInfo.gis.sub_bureau_name;
            userInfo.mobile = ress.data.userInfo.data.deviceno;
          } else {
            userInfo.userInfo = ress.data.userInfo;
          }

          setUserInfo(userInfo);
        } else {
          login(0)
          console.log("login failed");
        }
      });
}

export default {
    login,
    getOpenId,
}

    getUserInfo(e) {
      const that = this;
      if (that.checkVal === "A") {
        // 登录锁
        if (that.logining) {
          console.log("loginning");
          return true;
        } else if(!mpvue.getStorageSync("openId")){
          login(0)
          this.loginingInfo()
        }else {
          this.loginingInfo()
        }
      } else {
        wx.showModal({
          title: "温馨提示",
          content: "请阅读并同意协议",
          showCancel: false,
          success: (res) => {},
        });
      }
    },
    loginingInfo(){
          const that = this
          that.logining = true;
          wx.showLoading({
            title: "疯狂加载中...",
            mask: true,
          });
          mpvue.getUserInfo({
            success(res) {
              let userInfo = getUserInfo();
              userInfo = Object.assign(res.userInfo, userInfo);

              // 全局存储 unionid
              global.globalData.unionid = userInfo.unionid;
              mpvue.setStorageSync("unionid", userInfo.unionid);

              let shareId = global.globalData.shareId;
              if (shareId) {
                userInfo.wid = shareId;
              }
              if (mpvue.getStorageSync("jobNum")) {
                userInfo.jobNum = mpvue.getStorageSync("jobNum");
                userInfo.mainBureauName = mpvue.getStorageSync(
                  "mainBureauName"
                );
              }
              userInfo.step = "1";
                that
                  .https({
                    url: "User/userLogin",
                    needToken: false,
                    needUid: true,
                    data: userInfo,
                  })
                  .then((res) => {
                    that.logining = false;
                    mpvue.hideLoading();
                    if (res.status) {
                      console.log("第一步登录成功");
                      if (res.data.id) {
                        userInfo.id = res.data.id;
                      }
                      userInfo.user_type = res.data.type;
                      userInfo.wid = res.data.wid;
                      userInfo.wname = res.data.wname;
                      let token = res.data.token;
                      global.globalData.token = token;
                      mpvue.setStorageSync("token", token);
                      setUserInfo(userInfo);
                      mpvue.setStorageSync("hasLogin", true);
                      global.globalData.hasLogin = true;
                      get_no_read_msg();
                      // 判断step
                      if (res.data.step == 2) {
                        // 获取手机号
                        that.getUserInfos = false;
                        that.isgetPhone = true;
                        that.modalName = true;
                        that.getPhoneNumber();
                      } else if (res.data.step == 3) {
                        that.modalName = true;
                        that.isgetPhone = false;
                        that.getUserInfos = false;
                        that.getLocations = true;
                      } else if (userInfo.wid) {
                        mpvue.redirectTo({
                          url: "/pages/second/main",
                        });
                      } else {
                        // 获取手机号
                        that.getUserInfos = false;
                        that.modalName = true;
                        that.isgetPhone = true;
                        that.getPhoneNumber();
                      }
                    }
                  });
              
            },
            fail(res) {
              mpvue.hideLoading();
              that.logining = false;
              console.log("fail.......");
              mpvue.openSetting({
                success(res) {
                  console.log(res.authSetting);
                },
              });
            },
            complete(res) {
              console.log("complete");
            },
          });
    },
    getMobile(item) {
      const that = this;
      if (that.checkVal === "A") {
        wx.showLoading({
          title: "疯狂加载中...",
          mask: true,
        });
        that
          .https({
            url: "Welcome/getPhoneNumber",
            data: item,
            needToken: false,
          })
          .then((res) => {
            if (res.status) {
              let userInfo = getUserInfo();
              userInfo.mobile = res.data;
              setUserInfo(userInfo);
              that
                .https({
                  url: "User/userLogin",
                  needToken: false,
                  data: {
                    openid: userInfo.openid,
                    unionid: userInfo.unionid,
                    mobile: userInfo.mobile,
                    step: "2",
                  },
                })
                .then((res) => {
                  mpvue.hideLoading();
                  if (res.status) {
                    userInfo.user_type = res.data.type;
                    userInfo.wid = res.data.wid;
                    userInfo.wname = res.data.wname;
                    let token = res.data.token;
                    global.globalData.token = token;
                    mpvue.setStorageSync("token", token);
                    setUserInfo(userInfo);
                    mpvue.setStorageSync("hasLogin", true);
                    global.globalData.hasLogin = true;
                    get_no_read_msg();
                    if (userInfo.wid) {
                      mpvue.redirectTo({
                        url: "/pages/second/main",
                      });
                    } else {
                      that.modalName = true;
                      that.isgetPhone = false;
                      that.getUserInfos = false;
                      that.getLocations = true;
                    }
                  } else {
                    //TODO 失败情况未处理
                    console.log("getPhoneNumber失败");
                    mpvue.hideLoading();
                    that.modalName = true;
                    that.isgetPhone = false;
                    that.getUserInfos = false;
                    that.getLocations = true;
                    mpvue.showToast({
                      icon: "none",
                      title: res.msg,
                    });
                  }
                });
            } else {
              console.log("获取手机号失败");
              // 没有获取到手机号，直接去获取地理位置
              mpvue.hideLoading();
              that.modalName = true;
              that.isgetPhone = false;
              that.getUserInfos = false;
              that.getLocations = true;
            }
          });
      } else {
        wx.showModal({
          title: "温馨提示",
          content: "请阅读并同意协议",
          showCancel: false,
          success: (res) => {},
        });
      }
    },
    getLocation() {
      const that = this;
      if (that.checkVal === "A") {
        wx.showLoading({
          title: "疯狂加载中...",
          mask: true,
        });
        mpvue.getLocation({
          type: "gcj02",
          success(res) {
            console.log(res,'getLocationSuccess')
            const latitude = res.latitude;
            const longitude = res.longitude;
            mpvue.setStorageSync("user_location", {
              lat: latitude,
              lng: longitude,
            });
            global.globalData.latitude = latitude;
            global.globalData.longitude = longitude;
            let userInfo = getUserInfo();
            setUserInfo(userInfo);

            that
              .https({
                url: "User/userLogin",
                needToken: false,
                data: {
                  uid: userInfo.id,
                  openid: userInfo.openid,
                  latitude: latitude,
                  longitude: longitude,
                  step: "3",
                },
              })
              .then((res) => {
                console.log(res,'getLocation--userLogin')
                mpvue.hideLoading();
                if (res.status) {
                  userInfo.user_type = res.data.type;
                  userInfo.wid = res.data.wid;
                  userInfo.wname = res.data.wname;
                  let token = res.data.token;
                  global.globalData.token = token;
                  mpvue.setStorageSync("token", token);
                  setUserInfo(userInfo);
                  mpvue.setStorageSync("hasLogin", true);
                  global.globalData.hasLogin = true;
                  get_no_read_msg();
                  if (userInfo.wid) {
                    mpvue.redirectTo({
                      url: "/pages/second/main",
                    });
                  }
                }
              });
          },
          fail(reason) {
            mpvue.hideLoading();
            wx.showModal({
              title: "温馨提示",
              content: "请到手机设置和小程序设置中开启位置信息",
              showCancel: false,
              success: (res) => {},
            });
          },
          complete() {
            // mpvue.hideLoading();
            console.log("获取地理位置完成");
          },
        });
      } else {
        wx.showModal({
          title: "温馨提示",
          content: "请阅读并同意协议",
          showCancel: false,
          success: (res) => {},
        });
      }
    },