// 版本更新管理
let VersionUpdateMgr = {
    init () {
        if (!cc.sys.isNative) {
            return;
        }

        let UpdateCfg = require('UpdateCfg');
        // 是否模拟版本更新
        this.isDebug = UpdateCfg.simulationVersionUpdate;
        this.isDebugFail = UpdateCfg.simulationVersionFail;

        // 下载状态
        this.status = JMC.UPDATE_STATUS.UNSTART;
        // 下载进度
        this.downloadProgress = this.getCurProgress();
        this.totalBytes = 0;

        cc.game.on('e_middle_update_download_start', this._handleDownloadStart, this);
        cc.game.on('e_middle_update_download_update_progress', this._handleDownloadUpdateProgress, this);
        cc.game.on('e_middle_update_download_pause', this._handleDownloadPause, this);
        cc.game.on('e_middle_update_download_finished', this._handleDownloadFinished, this);
        cc.game.on('e_middle_update_download_fail', this._handleDownloadFail, this);
    },

    getChannelId () {
        let ret = G.MiddleDevice.getChannelId();
        return ret;
    },

    checkDownloaded (newAppUrl, newAppMd5) {
        let path = this.getDownloadedPath(newAppUrl, newAppMd5);
        if (path && path.length > 0) {
            this._stUpdateStatusChange(JMC.UPDATE_STATUS.DOWNLOAD_FINISHED);

            this.status = JMC.UPDATE_STATUS.DOWNLOAD_FINISHED;
            this.downloadProgress = 100;
            return true;
        } else {
            return false;
        }
    },

    /**
     * 是否支持版本更新
     *
     * @author libo
     * @date 2019-03-26
     * @returns
     */
    isSupportUpdate () {
        if (this.isDebug) {
            return false;
        }

        return G.MiddleUpdate.isSupportUpdate();
    },

    /**
     * 暂停下载[暂未使用]
     *
     * @author libo
     * @date 2019-03-26
     */
    pauseDownload () {
        if (this.isDebug) {
            if (this.isDebugFail) {
                // 暂停定时器
                clearInterval(this.intervalID);
            }
            this.handleDownloadPause();
            return;
        }

        G.MiddleUpdate.pauseDownload();
    },

    /**
     * 继续下载
     *
     * @author libo
     * @date 2019-03-26
     */
    resumeDownload () {
        if (this.isDebug) {
            if (this.isDebugFail) {
                // 恢复定时器
                this.intervalID = setInterval(() => {
                    this.handleDownloadUpdateProgress(this.downloadProgress + 1);
                    if (this.downloadProgress == 20) {
                        this.handleDownloadFail();
                        clearInterval(this.intervalID);
                    }
                    if (this.downloadProgress >= 100) {
                        this.handleDownloadFinished();
                        clearInterval(this.intervalID);
                    }
                }, 200);
            }
        }

        G.MiddleUpdate.resumeDownload();
    },

    /**
     * 下载新版本
     *
     * @author libo
     * @date 2019-03-26
     * @param {string} newAppUrl
     * @param {string} newAppMd5
     * @returns bool 开始下载成功?
     */
    download (newAppUrl, newAppMd5) {
        if (this.isDebug) {
            // 模拟下载 定时器
            this.handleDownloadStart();

            if (this.isDebugFail) {
                this.intervalID = setInterval(() => {
                    this.handleDownloadUpdateProgress(this.downloadProgress + 1);
                    if (this.downloadProgress == 20) {
                        this.handleDownloadFail();
                        clearInterval(this.intervalID);
                    }
                    if (this.downloadProgress >= 100) {
                        this.handleDownloadFinished();
                        clearInterval(this.intervalID);
                    }
                }, 200);
            }
            return true;
        }

        // 1、当配置的下载链接不是apk后缀时，点击立即下载时跳转到网页
        // 2、当渠道包不支持版本更新功能时，点击立即下载时跳转到网页
        let isAPK = newAppUrl.indexOf('apk', newAppUrl.length - 'apk'.length) !== -1;
        let isSupportUpdate = G.VersionUpdateMgr.isSupportUpdate();
        if (!isAPK || !isSupportUpdate) {
            cc.sys.openURL(newAppUrl);
            return;
        }

        return G.MiddleUpdate.download(newAppUrl, newAppMd5);
    },

    /**
     * 安装新版本
     *
     * @author libo
     * @date 2019-03-26
     * @returns bool 可以安装?
     */
    install () {
        if (this.isDebug) {
            return true;
        }

        return G.MiddleUpdate.install();
    },

    /**
     * 获取已下载的包文件路径[暂未使用]
     *
     * @author libo
     * @date 2019-03-26
     * @param {string} newAppUrl
     * @param {string} newAppMd5
     * @returns string 包文件路径
     */
    getDownloadedPath (newAppUrl, newAppMd5) {
        if (this.isDebug) {
            return '这是一个路径,模拟的';
        }

        return G.MiddleUpdate.getDownloadedPath(newAppUrl, newAppMd5);
    },

    /**
     * 获取当前下载进度[暂未使用]
     *
     * @author libo
     * @date 2019-03-26
     * @returns number 下载进度
     */
    getCurProgress () {
        if (this.isDebug) {
            return this.downloadProgress;
        }

        return G.MiddleUpdate.getCurProgress();
    },

    /**
     * 设置是否仅Wifi下载
     *
     * @author libo
     * @date 2019-03-26
     * @param {bool} isWifi
     */
    setWifiOnlyDownload (isWifi) {
        if (this.isDebug) {
            return;
        }

        G.MiddleUpdate.setWifiOnlyDownload(isWifi);
    },

    /**
     * 设置是否静默下载
     *
     * @author libo
     * @date 2019-03-26
     * @param {bool} isSilence
     */
    setSilenceDownload (isSilence) {
        if (this.isDebug) {
            return;
        }

        G.MiddleUpdate.setSilenceDownload(isSilence);
    },

    /**
     * 下载开始[Java回调]
     *
     * @author libo
     * @date 2019-03-26
     */
    _handleDownloadStart () {
        this._stUpdateStatusChange(JMC.UPDATE_STATUS.DOWNLOADING);

        this.status = JMC.UPDATE_STATUS.DOWNLOADING;

        cc.game.emit('e_mgr_launch_version_update_downloading');
    },

    /**
     * 下载进度[Java回调]
     *
     * @author libo
     * @date 2019-03-26
     * @param {number} progress 百分比进度
     */
    _handleDownloadUpdateProgress (eventData) {
        // eventData.data.progress: 进度 0~100
        this._stUpdateStatusChange(JMC.UPDATE_STATUS.DOWNLOADING);

        this.status = JMC.UPDATE_STATUS.DOWNLOADING;
        this.downloadProgress = eventData.data.progress;

        cc.game.emit('e_mgr_launch_version_update_downloading');
    },

    /**
     * 下载暂停[Java回调]
     *
     * @author libo
     * @date 2019-03-26
     */
    _handleDownloadPause () {
        this._stUpdateStatusChange(JMC.UPDATE_STATUS.DOWNLOAD_PAUSE);

        this.status = JMC.UPDATE_STATUS.DOWNLOAD_PAUSE;

        cc.game.emit('e_mgr_launch_version_update_pause');
    },

    /**
     * 下载完成[Java回调]
     *
     * @author libo
     * @date 2019-03-26
     */
    _handleDownloadFinished () {
        this._stUpdateStatusChange(JMC.UPDATE_STATUS.DOWNLOAD_FINISHED);

        this.status = JMC.UPDATE_STATUS.DOWNLOAD_FINISHED;
        this.downloadProgress = 100;

        cc.game.emit('e_mgr_launch_version_update_finished');
    },

    /**
     * 下载失败[Java回调]
     *
     * @author libo
     * @date 2019-03-26
     */
    _handleDownloadFail (eventData) {
        // eventData.errorMsg: 失败原因。枚举 Downloads.java
        this._stUpdateStatusChange(JMC.UPDATE_STATUS.DOWNLOAD_FAILED, eventData.errorMsg);

        this.status = JMC.UPDATE_STATUS.DOWNLOAD_FAILED;

        cc.game.emit('e_mgr_launch_version_update_failed');
    },

    // 统计 版本更新状态改变
    _stUpdateStatusChange (status, reason) {
        if (this.status === status)
            return;
    }
};

module.exports = VersionUpdateMgr;