import { LoginService } from './loginService.js'

const login = new LoginService().yohoApi();

export const loginAction = (callBack) => {
  return wx.login({
    success(res) {
      if (res.code) {
        login.checkLogin(res.code).then((data) => {
          // 获取 srd_session
          const loginData = data;
          handleLoginData(loginData);
          callBack(null, data);
        }).catch((error) => {
          callBack(error);
        });
      }
    },
    fail(error) {
      callBack(error);
    }
  })
};

const handleLoginData = (loginData) => {
  // 上报接口返回的结果，线上debug用
  // 缓存 srd_session
  setStorageWithValueForKey('srd_session', loginData.srd_session);
  // 缓存 openid
  setStorageWithValueForKey('openid', loginData.openid);
  // 如果 unionid 不存在（未使用过任何有货微信产品的全新用户)，调用getUnionID函数，再次获取unionID
  if (loginData.unionid) {
    // 对于已经授权过的用户，拿到unionid之后获取一次userinfo更新个人信息
    setStorageWithValueForKey('unionid', loginData.unionid);
  }
}

/**
 * 判断微信用户是否绑定
 * @param srd_session
 * @param result
 * @returns {Promise.}
 */
export const decodeUnionId = (srd_session, result) => {
  let res = result.detail;
  // 存储 userInfo
  if (res && res.userInfo) {
    setStorageWithValueForKey('userInfo', res.userInfo);
  } else {
    return;
  }
  const nickName = res.userInfo.nickName;
  const avatarUrl = res.userInfo.avatarUrl;
  if (!srd_session) return;
  return login.getUnionID(srd_session, res.encryptedData, res.iv).then((data) => {
    let union_id;
    // 本地保存 union_id
    if (data.union_id) {
      setStorageWithValueForKey('union_id', data.union_id);
      union_id = data.union_id;
    } else {
      union_id = wx.getStorageSync('union_id');
    }
    if (!union_id) {
      throw new Error('union_id is null');
    }
    // 网络上传头像，union_id，昵称
    login.sendWeChatUserDataWithUnionId(data.union_id, nickName, avatarUrl).catch(error => {});
    return { 
      union_id: union_id, 
      userInfo: res.userInfo
    };
  });
};

/**
 * 判断微信用户是否绑定
 * @param unionID
 * @param userInfo
 * @returns {Promise.}
 */
export const wechatUserIsBind = (union_id, userInfo) => {
  return login.wechatUserIsBind(union_id, userInfo.nickName).then(data => {
    if (!isStringEmpty(data.is_bind) && data.is_bind === "Y") {
      const newUserInfo = {
        is_bind: data.is_bind,
        mobile: data.mobile,
        session_key: data.session_key,
        uid: data.uid,
        ssouid: data.ssouid
      };
      const assignUserInfo = Object.assign(newUserInfo, userInfo);
      setStorageWithValueForKey('userInfo', assignUserInfo);

      return Promise.resolve({
        code: 10003,
        data: userInfo,
        message: '微信用户已绑定手机号'
      });
    } else {
      return Promise.resolve({
        code: 10004,
        message: '微信用户未绑定手机号'
      });
    }
  });
}

const setStorageWithValueForKey = (key, value) => {
  const globalData = getGlobalData();
  wx.setStorage({
    key: key,
    data: value,
  })
  globalData[key] = value;
}

const getStorageWithValueForKey = (key) => {
  wx.getStorage({
    key: key,
    success: function(res) {
      
    },
  })
}

const getGlobalData = () => {
  const app = getApp();
  let globalData;
  if (app && app.globalData) {
    // 原生小程序的 globalData 获取方式
    globalData = app && app.globalData;
  } else {
    // Taro 下 globalData 获取方式
    globalData = app && app.props && app.props.globalData;
  }
  return globalData;
}

const isStringEmpty = (str) => {
  if (str === undefined || str === null || str === '') {
    return true
  } else {
    return false
  }
}