allstar/assets/scripts/net/WeChat.js

const LoginApi = require('./LoginApi');
const ShareAction = require('../utils/ShareAction');
const artistInvite = [
    {
        title: '脱口秀主持人只能有一个...那就是你！',
        image: 'talent_1.png'
    },
    {
        title: '舞王争霸还差你，快来决一高下！',
        image: 'talent_2.png'
    },
    {
        title: '的演唱会等你来献唱~',
        image: 'talent_3.png'
    },
    {
        title: '新片开等你来主演！',
        image: 'talent_4.png'
    },
    {
        title: '的电竞战队需要你来carry！',
        image: 'talent_5.png'
    },
];
class WeChat {

    constructor() {
        this.wxWidth = 0;//微信小程序可用屏幕宽度
        this.wxHeight = 0;//微信小程序可用屏幕高度
        this.js_code = null;
    }

    /**
     * 检查登录态是否已失效
     * 回调函数会回传flag值（true:未失效, false:已失效）
     * @param {Function} cb 回调方法
     */
    checkLogin(cb) {
        CC_WECHATGAME && wx.checkSession({
            success() {
                //session_key 未失效
                cb && cb(true)
            },
            fail() {
                //session_key 已失效
                cb && cb(false)
            }
        })
    }

    /**
     * 使用存在localStorage中的登录信息进行静默登录
     * 不刷新 uid 和 token
     * @param {Function} cb 回调方法
     */
    loginStatic(cb) {
        let userStorage = cc.sys.localStorage.getItem('GlobalUser')
        if (userStorage) {
            Global.user = userStorage;
            cb && cb()
        } else {
            this.login(cb)
        }
    }

    /**
     * 调起一个新的微信登录
     * 刷新 token
     * @param {Function} cb 回调方法
     */
    login(cb) {

        this.cb = cb || function () { }

        if (!CC_WECHATGAME) {
            Global.user = {
                uid: 1,
                token: 'lucifer_test_token',
                nick: 'lucifer',
                avatarUrl: 'http://mpic.tiankong.com/f94/72b/f9472be4691ab43e3f6132bb8b63d00a/640.jpg',
                gender: 1
            }

            this.cb();
            return;
        }

        this.isSupportInfoBtn = wx.createUserInfoButton ? true : false;

        wx.login({
            success: ({ code }) => {
                // console.log(code);
                this.js_code = code;
                //如果支持用户信息按钮
                if (this.isSupportInfoBtn) {
                    wx.getSetting({
                        success: (res) => {
                            // 已经授权，可以直接调用 getUserInfo 获取头像昵称
                            if (res.authSetting['scope.userInfo']) {
                                this._getUserInfo()
                            } else {
                                this._createBtn();
                            }
                        }
                    })
                } else {
                    this._getUserInfo()
                }
            }
        })

        wx.getSystemInfo({
            success: (res) => {
                Global.os = res.platform == "android" ? 2 : 1;
                this.wxWidth = res.windowWidth;
                this.wxHeight = res.windowHeight;
            }
        });
    }

    _getUserInfo() {
        wx.getUserInfo({
            withCredentials: true,
            success: (res) => {
                this._login(res);
            }
        })
    }

    _login(res) {
        // let loginApi = new LoginApi();
        LoginApi.login(this.js_code, res, this.cb);
    }

    /**
     * 创建一个微信环境下，获取登录信息的原生按钮
     */
    _createBtn() {
        let width = 167;
        let height = 88.5;
        let left = (this.wxWidth - width) / 2;
        let top = this.wxHeight - 380;
        console.log('top: ', top);
        let button = wx.createUserInfoButton({
            type: 'image',
            // text: '点击授权',
            image: 'https://pub.dwstatic.com/wxgame/allstar/share/startgame.png',
            style: {
                left: left,
                top: top,
                width: width,
                height: height,
                backgroundColor: '#ffffff',
                borderColor: '#ffffff',
                borderWidth: 0,
                borderRadius: 5,
                color: '#ffffff',
                textAlign: 'center',
                fontSize: 16,
                lineHeight: 88.5,
            },
            withCredentials: true
        })
        button.onTap((res) => {
            // console.log('res');
            // console.log(res);
            if (res.errMsg == 'getUserInfo:ok') {
                button.destroy();
                this._login(res);
            }
        })
        return button;
    }

    inviteFriendPromise() {
        return this._invite(ShareAction.ADD_FRIEND, '确认过眼神，你就是我要的C位', 'share1.jpg');
    }

    inviteArtistPromise() {
        let content = artistInvite[Math.floor(Math.random() * 5)];
        return this._invite(ShareAction.BECOME_ARTIST, content.title, content.image);
    }

    _invite(action, title, image) {
        return new Promise((resolve, reject) => {
            if (!CC_WECHATGAME) {
                reject();
            }

            wx.shareAppMessage({
                title: Global.user.nick + title,
                imageUrl: 'https://pub.dwstatic.com/wxgame/allstar/share/' + image,
                query: 'uid=' + Global.user.uid + '&shareType=' + action,
                success: resolve,
                fail: reject
            });
        });
    }

}

module.exports = new WeChat();