app升级

// 主颜色
const $mainColor = "FF5B78";
// 弹窗图标url
const $iconUrl = "/static/update/updater.png";

// 下载升级包
function getDownload(data) {
	let popupData = {
		progress:true,
		buttonNum: 2
	};
	if(data.is_enforce){
		popupData.buttonNum = 0;
	}
	let dtask;
	let lastProgressValue = 0;
	downloadPopup(popupData, function(res) {
		dtask = plus.downloader.createDownload(data.download_url, {
			filename: "_doc/update/"
		}, function(download, status) {
			if (status == 200) {
				res.change({
					progressValue: 100,
					progressTip:"正在安装文件...",
					progress: true,
					buttonNum: 0
				});
				plus.runtime.install(download.filename, {}, function() {
					res.change({
						contentText: "应用资源更新完成！",
						buttonNum: 1,
						progress: false
					});
				}, function(e) {
					res.cancel();
					plus.nativeUI.alert("安装文件失败[" + e.code + "]：" + e.message);
				});
			} else {
				res.change({
					contentText: "文件下载失败...",
					buttonNum: 1,
					progress: false
				});
			}
		});
		dtask.start();
		dtask.addEventListener("statechanged", function(task, status) {
			switch (task.state) {
				case 1: // 开始
					res.change({
						progressValue:0,
						progressTip:"准备下载...",
						progress: true
					});
					break;
				case 2: // 已连接到服务器  
					res.change({
						progressValue:0,
						progressTip:"开始下载...",
						progress: true
					});
					break;
				case 3:
					const progress = parseInt(task.downloadedSize / task.totalSize * 100);
					if(progress - lastProgressValue >= 2){
						lastProgressValue = progress;
						res.change({
							progressValue:progress,
							progressTip: "已下载" + progress + "%",
							progress: true
						});
					}
					
					break;
			}
		});
	},function(){
		// 取消下载
		dtask && dtask.abort();
		uni.showToast({
			title: "已取消下载",
			icon:"none"
		});
	},
	function(){
		// 重启APP
		plus.runtime.restart();
	});
}

// 文字
function drawtext(text, maxWidth) {
	let textArr = text.split("");
	let len = textArr.length;
	// 上个节点
	let previousNode = 0;
	// 记录节点宽度
	let nodeWidth = 0;
	// 文本换行数组
	let rowText = [];
	// 如果是字母，侧保存长度
	let letterWidth = 0;
	// 汉字宽度
	let chineseWidth = 14;
	// otherFont宽度
	let otherWidth = 7;
	for (let i = 0; i < len; i++) {
		if (/[\u4e00-\u9fa5]|[\uFE30-\uFFA0]/g.test(textArr[i])) {
			if(letterWidth > 0){
				if(nodeWidth + chineseWidth + letterWidth * otherWidth > maxWidth){
					rowText.push({
						type: "text",
						content: text.substring(previousNode, i)
					});
					previousNode = i;
					nodeWidth = chineseWidth;
					letterWidth = 0;
				} else {
					nodeWidth += chineseWidth + letterWidth * otherWidth;
					letterWidth = 0;
				}
			} else {
				if(nodeWidth + chineseWidth > maxWidth){
					rowText.push({
						type: "text",
						content: text.substring(previousNode, i)
					});
					previousNode = i;
					nodeWidth = chineseWidth;
				}else{
					nodeWidth += chineseWidth;
				}
			}
		} else {
			if(/\n/g.test(textArr[i])){
				rowText.push({
					type: "break",
					content: text.substring(previousNode, i)
				});
				previousNode = i + 1;
				nodeWidth = 0;
				letterWidth = 0;
			}else if(textArr[i] == "\\" && textArr[i + 1] == "n"){
				rowText.push({
					type: "break",
					content: text.substring(previousNode, i)
				});
				previousNode = i + 2;
				nodeWidth = 0;
				letterWidth = 0;
			}else if(/[a-zA-Z0-9]/g.test(textArr[i])){
				letterWidth += 1;
				if(nodeWidth + letterWidth * otherWidth > maxWidth){
					rowText.push({
						type: "text",
						content: text.substring(previousNode, i + 1 - letterWidth)
					});
					previousNode = i + 1 - letterWidth;
					nodeWidth = letterWidth * otherWidth;
					letterWidth = 0;
				}
			} else{
				if(nodeWidth + otherWidth > maxWidth){
					rowText.push({
						type: "text",
						content: text.substring(previousNode, i)
					});
					previousNode = i;
					nodeWidth = otherWidth;
				}else{
					nodeWidth += otherWidth;
				}
			}
		}
	}
	if (previousNode < len) {
		rowText.push({
			type: "text",
			content: text.substring(previousNode, len)
		});
	}
	return rowText;
}

// 升级弹窗
function updatePopup(data, callback) {
	// 弹窗遮罩层
	let maskLayer = new plus.nativeObj.View("maskLayer", { //先创建遮罩层
		top: '0px',
		left: '0px',
		height: '100%',
		width: '100%',
		backgroundColor: 'rgba(0,0,0,0.5)'
	});

	// 以下为计算菜单的nview绘制布局，为固定算法，使用者无关关心
	const screenWidth = plus.screen.resolutionWidth;
	const screenHeight = plus.screen.resolutionHeight;
	//弹窗容器宽度
	const popupViewWidth = screenWidth * 0.7;
	// 弹窗容器的Padding
	const viewContentPadding = 20;
	// 弹窗容器的宽度
	const viewContentWidth = parseInt(popupViewWidth - (viewContentPadding * 2));
	// 描述的列表
	const descriptionList = drawtext(data.content, viewContentWidth);
	// 弹窗容器高度
	let popupViewHeight = 80 + 20 + 20 + 90  + 10;
	let popupViewContentList = [{
			src: $iconUrl,
			id: "logo", 
			tag: "img",
			position: {
				top: "0px",
				left: (popupViewWidth - 124) / 2 + "px",
				width: "124px",
				height: "80px",
			}
		},
		{
			tag: 'font',
			id: 'title',
			text: "发现新版本" + data.version,
			textStyles: {
				size: '18px',
				color: "#333",
				weight: "bold",
				whiteSpace: "normal"
			},
			position: {
				top: '90px',
				left: viewContentPadding + "px",
				width: viewContentWidth + "px",
				height: "30px",
			}
		}];
	const textHeight = 18;
	let contentTop = 130;
	descriptionList.forEach((item,index) => {
		if(index > 0){
			popupViewHeight += textHeight;
			contentTop += textHeight;
		}
		popupViewContentList.push({
			tag: 'font',
			id: 'content' + index + 1,
			text: item.content,
			textStyles: {
				size: '14px',
				color: "#666",
				lineSpacing: "50%",
				align: "left"
			},
			position: {
				top: contentTop + "px",
				left: viewContentPadding + "px",
				width: viewContentWidth + "px",
				height: textHeight + "px",
			}
		});
		if(item.type == "break"){
			contentTop += 10;
			popupViewHeight += 10;
		}
	});
	// 弹窗内容
	let popupView = new plus.nativeObj.View("popupView", { //创建底部图标菜单
		tag: "rect",
		top: (screenHeight - popupViewHeight) / 2 + "px",
		left: '15%',
		height: popupViewHeight + "px",
		width: "70%"
	});
	// 绘制白色背景
	popupView.drawRect({
		color: "#FFFFFF",
		radius: "8px"
	}, {
		top: "40px",
		height: popupViewHeight - 40 + "px",
	});
	// 绘制底边按钮
	if(data.is_enforce==1){
		popupView.drawRect({
			radius: "3px",
			color: $mainColor,
		}, {
			bottom: viewContentPadding + 'px',
			left: viewContentPadding + "px",
			width: viewContentWidth + "px",
			height: "30px",
		});
	}else{
		popupView.drawRect({
			radius: "3px",
			borderColor: "#f1f1f1",
			borderWidth: "1px",
		}, {
			bottom: viewContentPadding + 'px',
			left: viewContentPadding + "px",
			width: (viewContentWidth - viewContentPadding) / 2 + "px",
			height: "30px",
		});
		popupView.drawRect({
			radius: "3px",
			color: $mainColor,
		}, {
			bottom: viewContentPadding + 'px',
			left: ((viewContentWidth - viewContentPadding) / 2 + viewContentPadding * 2) + "px",
			width: (viewContentWidth - viewContentPadding) / 2 + "px",
			height: "30px",
		});
	}
	if(data.is_enforce==1){
		popupViewContentList.push({
			tag: 'font',
			id: 'confirmText',
			text: "立即升级",
			textStyles: {
				size: '14px',
				color: "#FFF",
				lineSpacing: "0%",
				whiteSpace: "normal"
			},
			position: {
				bottom: viewContentPadding + 'px',
				left: viewContentPadding + "px",
				width: viewContentWidth + "px",
				height: "30px",
			}
		});	
	}else{
		popupViewContentList.push({
			tag: 'font',
			id: 'cancelText',
			text: "暂不升级",
			textStyles: {
				size: '14px',
				color: "#666",
				lineSpacing: "0%",
				whiteSpace: "normal"
			},
			position: {
				bottom: viewContentPadding + 'px',
				left: viewContentPadding + "px",
				width: (viewContentWidth - viewContentPadding) / 2 + "px",
				height: "30px",
			}
		});
		popupViewContentList.push({
			tag: 'font',
			id: 'confirmText',
			text: "立即升级",
			textStyles: {
				size: '14px',
				color: "#FFF",
				lineSpacing: "0%",
				whiteSpace: "normal"
			},
			position: {
				bottom: viewContentPadding + 'px',
				left: ((viewContentWidth - viewContentPadding) / 2 + viewContentPadding * 2) + "px",
				width: (viewContentWidth - viewContentPadding) / 2 + "px",
				height: "30px",
			}
		});	
	}
		
	popupView.draw(popupViewContentList);
	popupView.addEventListener("click", function(e) {
		let maxTop = popupViewHeight - viewContentPadding;
		let maxLeft = popupViewWidth - viewContentPadding;
		let buttonWidth = (viewContentWidth - viewContentPadding) / 2;
		if(data.is_enforce==1){
			buttonWidth = viewContentWidth
		}
		if (e.clientY > maxTop - 30 && e.clientY < maxTop) {
			if(data.is_enforce==1){
				if (e.clientX > viewContentPadding && e.clientX < maxLeft - viewContentPadding) {
					maskLayer.hide();
					popupView.hide();
					callback && callback();
				}
			}else{
				// 暂不升级
				if (e.clientX > viewContentPadding && e.clientX < maxLeft - buttonWidth - viewContentPadding) {
					uni.setStorageSync("jumpUpdateVersion", data.version);
					maskLayer.hide();
					popupView.hide();
				} else if (e.clientX > maxLeft - buttonWidth && e.clientX < maxLeft) {
					// 立即升级
					maskLayer.hide();
					popupView.hide();
					callback && callback();
				}
			}
		}
	});
	// 点击遮罩层
	maskLayer.addEventListener("click", function() { //处理遮罩层点击
		if(data.mask_click!==false && data.is_enforce!=1){
			maskLayer.hide();
			popupView.hide();
			uni.setStorageSync("jumpUpdateVersion", data.version);
		}
	});
	// 显示弹窗
	maskLayer.show();
	popupView.show();
}

//绘制文件下载
function downloadPopupDrawing(data){
	// 以下为计算菜单的nview绘制布局，为固定算法，使用者无关关心
	const screenWidth = plus.screen.resolutionWidth;
	const screenHeight = plus.screen.resolutionHeight;
	//弹窗容器宽度
	const popupViewWidth = screenWidth * 0.7;
	// 弹窗容器的Padding
	const viewContentPadding = 20;
	// 弹窗容器的宽度
	const viewContentWidth = popupViewWidth - (viewContentPadding * 2);
	// 弹窗容器高度
	let popupViewHeight = viewContentPadding * 3 + 60;
	let progressTip = data.progressTip || "准备下载...";
	let contentText = data.contentText || "正在为您更新，请耐心等待";
	let elementList = [
		{
			tag: 'rect', //背景色
			color: '#FFFFFF',
			rectStyles:{
				radius: "8px"
			}
		},
		{
			tag: 'font',
			id: 'title',
			text: "升级APP",
			textStyles: {
				size: '16px',
				color: "#333",
				weight: "bold",
				verticalAlign: "middle",
				whiteSpace: "normal"
			},
			position: {
				top: viewContentPadding + 'px',
				height: "30px",
			}
		},
		{
			tag: 'font',
			id: 'content',
			text: contentText,
			textStyles: {
				size: '14px',
				color: "#333",
				verticalAlign: "middle",
				whiteSpace: "normal"
			},
			position: {
				top: viewContentPadding * 2 + 30 + 'px',
				height: "20px",
			}
		}
	];
	// 是否有进度条
	if(data.progress){
		popupViewHeight += viewContentPadding + 40;
		elementList = elementList.concat([
			{
				tag: 'font',
				id: 'progressValue',
				text: progressTip,
				textStyles: {
					size: '14px',
					color: $mainColor,
					whiteSpace: "normal"
				},
				position: {
					top: viewContentPadding * 4 + 20 + 'px',
					height: "30px"
				}
			},
			{
				tag: 'rect', //绘制进度条背景
				id: 'progressBg',
				rectStyles:{
					radius: "4px",
					borderColor: "#f1f1f1",
					borderWidth: "1px",
				},
				position:{
					top: viewContentPadding * 4 + 60 + 'px',
					left: viewContentPadding + "px",
					width: viewContentWidth + "px",
					height: "8px"
				}
			},
		]);
	}
	if (data.buttonNum == 2) {
		popupViewHeight += viewContentPadding + 30;
		elementList = elementList.concat([
			{
				tag: 'rect', //绘制底边按钮
				rectStyles:{
					radius: "3px",
					borderColor: "#f1f1f1",
					borderWidth: "1px",
				},
				position:{
					bottom: viewContentPadding + 'px',
					left: viewContentPadding + "px",
					width: (viewContentWidth - viewContentPadding) / 2 + "px",
					height: "30px"
				}
			},
			{
				tag: 'rect', //绘制底边按钮
				rectStyles:{
					radius: "3px",
					color: $mainColor
				},
				position:{
					bottom: viewContentPadding + 'px',
					left: ((viewContentWidth - viewContentPadding) / 2 + viewContentPadding * 2) + "px",
					width: (viewContentWidth - viewContentPadding) / 2 + "px",
					height: "30px"
				}
			},
			{
				tag: 'font',
				id: 'cancelText',
				text: "取消下载",
				textStyles: {
					size: '14px',
					color: "#666",
					lineSpacing: "0%",
					whiteSpace: "normal"
				},
				position: {
					bottom: viewContentPadding + 'px',
					left: viewContentPadding + "px",
					width: (viewContentWidth - viewContentPadding) / 2 + "px",
					height: "30px",
				}
			},
			{
				tag: 'font',
				id: 'confirmText',
				text: "后台下载",
				textStyles: {
					size: '14px',
					color: "#FFF",
					lineSpacing: "0%",
					whiteSpace: "normal"
				},
				position: {
					bottom: viewContentPadding + 'px',
					left: ((viewContentWidth - viewContentPadding) / 2 + viewContentPadding * 2) + "px",
					width: (viewContentWidth - viewContentPadding) / 2 + "px",
					height: "30px",
				}
			}
		]);
	}
	if (data.buttonNum == 1) {
		popupViewHeight += viewContentPadding + 40;
		elementList = elementList.concat([
			{
				tag: 'rect', //绘制底边按钮
				rectStyles:{
					radius: "6px",
					color: $mainColor
				},
				position:{
					bottom: viewContentPadding + 'px',
					left: viewContentPadding + "px",
					width: viewContentWidth + "px",
					height: "40px"
				}
			},
			{
				tag: 'font',
				id: 'confirmText',
				text: "关闭",
				textStyles: {
					size: '14px',
					color: "#FFF",
					lineSpacing: "0%",
				},
				position: {
					bottom: viewContentPadding + 'px',
					left: viewContentPadding + "px",
					width: viewContentWidth + "px",
					height: "40px"
				}
			}
		]);
	}
	return {
		popupViewHeight:popupViewHeight,
		popupViewWidth:popupViewWidth,
		screenHeight:screenHeight,
		viewContentWidth:viewContentWidth,
		viewContentPadding:viewContentPadding,
		elementList: elementList
	};
}

//绘制下载弹窗
function downloadPopup(data, callback, cancelCallback,rebootCallback) {
	// 弹窗遮罩层
	let maskLayer = new plus.nativeObj.View("maskLayer", { //先创建遮罩层
		top: '0px',
		left: '0px',
		height: '100%',
		width: '100%',
		backgroundColor: 'rgba(0,0,0,0.5)'
	});
	let popupViewData = downloadPopupDrawing(data);
	// 弹窗内容
	let popupView = new plus.nativeObj.View("popupView", { //创建底部图标菜单
		tag: "rect",
		top: (popupViewData.screenHeight - popupViewData.popupViewHeight) / 2 + "px",
		left: '15%',
		height: popupViewData.popupViewHeight + "px",
		width: "70%",
	});
	let progressValue = 0;
	let progressTip = 0;
	let contentText = 0;
	let buttonNum = 2;
	if(data.buttonNum >= 0){
		buttonNum = data.buttonNum;
	}
	popupView.draw(popupViewData.elementList);
	popupView.addEventListener("click", function(e) {
		let maxTop = popupViewData.popupViewHeight - popupViewData.viewContentPadding;
		let maxLeft = popupViewData.popupViewWidth - popupViewData.viewContentPadding;
		if (e.clientY > maxTop - 40 && e.clientY < maxTop) {
			if(buttonNum == 1){
				// 单按钮
				if (e.clientX > popupViewData.viewContentPadding && e.clientX < maxLeft) {
					maskLayer.hide();
					popupView.hide();
					rebootCallback && rebootCallback();
				}
			}else if(buttonNum == 2){
				// 双按钮
				let buttonWidth = (popupViewData.viewContentWidth - popupViewData.viewContentPadding) / 2;
				if (e.clientX > popupViewData.viewContentPadding && e.clientX < maxLeft - buttonWidth - popupViewData.viewContentPadding) {
					maskLayer.hide();
					popupView.hide();
					cancelCallback && cancelCallback();
				} else if (e.clientX > maxLeft - buttonWidth && e.clientX < maxLeft) {
					maskLayer.hide();
					popupView.hide();
				}
			}
		}
	});
	// 显示弹窗
	maskLayer.show();
	popupView.show();
	// 改变进度条
	callback({
		change: function(res) {
			let progressElement = [];
			if(res.progressValue){
				progressValue = res.progressValue;
				// 绘制进度条
				progressElement.push({
					tag: 'rect', //绘制进度条背景
					id: 'progressValueBg',
					rectStyles:{
						radius: "4px",
						color: $mainColor
					},
					position:{
						top: popupViewData.viewContentPadding * 4 + 60 + 'px',
						left: popupViewData.viewContentPadding + "px",
						width: popupViewData.viewContentWidth * (res.progressValue / 100) + "px",
						height: "8px"
					}
				});
			}
			if(res.progressTip){
				progressTip = res.progressTip;
				progressElement.push({
					tag: 'font',
					id: 'progressValue',
					text: res.progressTip,
					textStyles: {
						size: '14px',
						color: $mainColor,
						whiteSpace: "normal"
					},
					position: {
						top: popupViewData.viewContentPadding * 4 + 20 + 'px',
						height: "30px"
					}
				});
			}
			if(res.contentText){
				contentText = res.contentText;
				progressElement.push({
					tag: 'font',
					id: 'content',
					text: res.contentText,
					textStyles: {
						size: '16px',
						color: "#333",
						whiteSpace: "normal"
					},
					position: {
						top: popupViewData.viewContentPadding * 2 + 30 + 'px',
						height: "30px",
					}
				});
			}
			if(res.buttonNum >= 0 && buttonNum != res.buttonNum){
				buttonNum = res.buttonNum;
				popupView.reset();
				popupViewData = downloadPopupDrawing(Object.assign({
					progressValue:progressValue,
					progressTip:progressTip,
					contentText:contentText,
				},res));
				let newElement = [];
				popupViewData.elementList.map((item,index) => {
					let have = false;
					progressElement.forEach((childItem,childIndex) => {
						if(item.id == childItem.id){
							have = true;
						}
					});
					if(!have){
						newElement.push(item);
					}
				});
				progressElement = newElement.concat(progressElement);
				popupView.setStyle({
					tag: "rect",
					top: (popupViewData.screenHeight - popupViewData.popupViewHeight) / 2 + "px",
					left: '15%',
					height: popupViewData.popupViewHeight + "px",
					width: "70%",
				});
				popupView.draw(progressElement); 
			}else{
				popupView.draw(progressElement);
			}
		},
		cancel: function() { 
			maskLayer.hide();
			popupView.hide();
		}
	});
}

export default function(data) {
	updatePopup(data, function() {
		if (/\.wgt$/i.test(data.download_url)) {
			getDownload(data);
		} else {
			if (plus.os.name == "Android") {
				getDownload(data);
			} else {
				plus.runtime.openURL(data.download_url);
			}
		}
	});
}