const update = {
	check : function(path, call) {
		var self = this;
		var source = this.source;
		if (source != 'app') {
			return;
		}
		var type = plus.os.name.toLowerCase();
		self.post('isUpdate', {t:1}, function(res) {
			if (type == 'android') {
				res.downloadUrl = res.androidUrl;
			} else {
				res.downloadUrl = res.iosUrl;
			}
			self.data('dever_update_link', res.downloadUrl);
			plus.runtime.getProperty(plus.runtime.appid, function(widgetInfo) {
				var version = widgetInfo.versionCode;
				var state = false;
				state = widgetInfo.versionCode < res.versionCode;
				if (state) {
					//强制更新
					var txt = '正在为您下载更新，下载完成将重启应用';
					if (res.forceUpdate == true) {
						self.down(res, res.downloadUrl, txt, type);
					} else if(call) {
						call(res, txt, type);
					} else {
						uni.showModal({
							title: '发现新版本',
							content: '有新版本可用 (版本号:' + res.versionName + ')，请问您是否更新？',
							success: (t) => {
								if (t.confirm) {
									if (path) {
										self.location(path);
									} else {
										self.down(res, res.downloadUrl, txt, type);
									}
								}
							}
						})
					}
				}
			});
		});
	},
	updateCall : function(config, type, packgePath) {
		// 保存更新记录到stroage，下次启动app时安装更新
		var self = this;
		self.data('dever_update', 1);
		self.data('dever_update_down', packgePath);
		// 任务完成，关闭下载任务，开始安装
		plus.runtime.install(packgePath, {force: true}, function() {
			self.data('dever_update', 2);
			self.data('dever_update_down', 'del');
			uni.showModal({
			  title: '提示',
			  content: '应用将重启以完成更新',
			  showCancel: false,
			  complete: () => {
				plus.runtime.restart();
			  }
			})
		});
	},
	down : function(config, url, txt, type, call) {
		if (!url) {
			return false;
		}
		if (txt) {
			this.alert(txt);
		}
		if (type != 'android' && !url.match(RegExp(/.wgt/))) {
			plus.runtime.openURL(url);
			return false;
		}
		var self = this;
		var packgePath = self.data('dever_update_down');
		if (packgePath) {
			self.updateCall(config, type, packgePath);
			return false;
		}
		var downloadTask = uni.downloadFile({
		    url: url,
		    success: (res) => {
		        if (res.statusCode === 200) {
		            // 保存下载的安装包
		            uni.saveFile({
		                tempFilePath: res.tempFilePath,
		                success: (res) => {
		                    var packgePath = res.savedFilePath;
							if (call) {
								call();
							}
		                    self.updateCall(config, type, packgePath);
							downloadTask.abort();
							downloadTask = null;
		                }
		            })
		        }
		    }
		});
		return downloadTask;
	},
}
export default update;