<template>
	<view v-show="shown" class="mask flex-center">
		<view class="content">

			<view class="content-top">
				<text class="content-top-text">{{title}}</text>
				<image class="content-top-image" mode="widthFix"
					src="/uni_modules/uni-upgrade-center-app/static/bg_top.png"></image>
			</view>

			<view class="content-body">
				<view class="content-body-title">
					<text class="text title">{{subTitle}}</text>
					<!-- <text style="padding-left:20rpx;font-size: 0.5em;color: #666;">v.{{version}}</text> -->
				</view>
				<view class="body">
					<scroll-view class="box-des-scroll" scroll-y="true">
						<text class="text box-des">
							{{contents}}
						</text>
					</scroll-view>
				</view>
				<view class="footer flex-center">
					<template v-if="isiOS">
						uni-app x 暂不支持 iOS
						<!-- <button class="content-button" style="border: none;color: #fff;" plain @click="jumpToAppStore">
							{{downLoadBtnTextiOS}}
						</button> -->
					</template>
					<template v-else>
						<template v-if="!downloadSuccess">
							<view class="progress-box flex-column" v-if="downloading">
								<progress class="progress" style="width: 90%;height: 40rpx;border-radius: 35px;"
									:percent="downLoadPercent" activeColor="#3DA7FF" :show-info="true"
									:stroke-width="10" />
								<view
									style="width:100%;display: flex;justify-content: space-around;flex-direction: row;">
									<text class="text" style="font-size: 28rpx;">{{downLoadingText}}</text>
									<text class="text"
										style="font-size: 28rpx;">({{downloadedSize}}/{{packageFileSize}}M)</text>
								</view>
							</view>

							<button v-else class="content-button"
								style="border: none; color: #fff;width: 100%;height: 80rpx;line-height: 80rpx;font-size: 30rpx;font-weight: 400;border-radius: 40rpx;text-align: center;background:  #1785ff"
								:plain="true" @click="updateApp">
								{{downLoadBtnText}}
							</button>
						</template>

						<button v-else-if="downloadSuccess && !installed" class="content-button"
							style="border: none; color: #fff;width: 100%;height: 80rpx;line-height: 80rpx;font-size: 30rpx;font-weight: 400;border-radius: 40rpx;text-align: center;background:  #1785ff"
							:plain="true" :loading="installing" :disabled="installing" @click="installPackage">
							{{installing ? '正在安装……' : '下载完成，立即安装'}}
						</button>

						<button v-else-if="installed" class="content-button"
							style="border: none; color: #ccc;width: 100%;height: 80rpx;line-height: 80rpx;font-size: 30rpx;font-weight: 400;border-radius: 40rpx;text-align: center;background:  #1785ff"
							:plain="true" :disabled="true">
							安装完成后，请重启应用
						</button>
					</template>
				</view>
			</view>

			<view class="content-bottom">
				<image v-if="!is_mandatory" class="close-img" mode="widthFix"
					src="/uni_modules/uni-upgrade-center-app/static/app_update_close.png" @click="closeUpdate">
				</image>
			</view>
		</view>
	</view>
</template>

<script>
	import { UniUpgradeCenterResult } from '../utils/call-check-version'

	const localFilePathKey = 'UNI_ADMIN_UPGRADE_CENTER_LOCAL_FILE_PATH'
	const platform_iOS = 'iOS';
	const requiredKey = ['version', 'url', 'type']
	let downloadTask : DownloadTask | null = null;

	/**
	 * 对比版本号，如需要，请自行修改判断规则
	 * 支持比对	("3.0.0.0.0.1.0.1", "3.0.0.0.0.1")	("3.0.0.1", "3.0")	("3.1.1", "3.1.1.1") 之类的
	 * @param {Object} v1
	 * @param {Object} v2
	 * v1 > v2 return 1
	 * v1 < v2 return -1
	 * v1 == v2 return 0
	 */
	function compare(v1 : string = '0', v2 : string = '0') : number {
		const v1_array = v1.split('.')
		const v2_array = v2.split('.')
		const minVersionLens = Math.min(v1.length, v2.length);

		let result = 0;
		for (let i = 0; i < minVersionLens; i++) {
			const curV1 = parseInt(v1_array[i])
			const curV2 = parseInt(v2_array[i])

			if (curV1 > curV2) {
				result = 1
				break;
			} else if (curV1 < curV2) {
				result = -1
				break;
			}
		}

		if (result === 0 && (v1_array.length !== v2_array.length)) {
			const v1BiggerThenv2 = v1_array.length > v2_array.length;
			const maxLensVersion = v1BiggerThenv2 ? v1_array : v2_array;
			for (let i = minVersionLens; i < maxLensVersion.length; i++) {
				const curVersion = parseInt(maxLensVersion[i])
				if (curVersion > 0) {
					v1BiggerThenv2 ? result = 1 : result = -1
					break;
				}
			}
		}

		return result;
	}

	export default {
		data() {
			return {
				shown: false,
				showTabbar: false,
				// 从之前下载安装
				installForBeforeFilePath: '',

				// 安装
				installed: false,
				installing: false,

				// 下载
				downloadSuccess: false,
				downloading: false,

				downLoadPercent: 0,
				downloadedSize: 0,
				packageFileSize: 0,

				tempFilePath: '', // 要安装的本地包地址

				// 默认安装包信息
				title: '更新日志',
				contents: '',
				is_mandatory: false,

				// 可自定义属性
				subTitle: '发现新版本',
				downLoadBtnTextiOS: '立即跳转更新',
				downLoadBtnText: '立即下载更新',
				downLoadingText: '安装包下载中，请稍后',

				url: "",
				platform: [] as string[]
			}
		},
		computed: {
			isiOS() : boolean {
				return this.platform.includes(platform_iOS);
			}
		},
		methods: {
			show(shown : boolean, localPackageInfo : UniUpgradeCenterResult | null) {
				if (localPackageInfo === null) return;

				uni.hideTabBar()?.then(_ => { this.showTabbar = true })?.catch(_ => { })

				for (let key in localPackageInfo) {
					if (requiredKey.indexOf(key) != -1 && localPackageInfo[key] === null) {
						console.error(`参数 ${key} 必填，请检查后重试`)
						uni.navigateBack()
						return;
					}
				}

				this.title = localPackageInfo.title
				this.url = localPackageInfo.url
				this.contents = localPackageInfo.contents
				this.is_mandatory = localPackageInfo.is_mandatory
				this.platform = localPackageInfo.platform
				this.shown = shown
			},
			closeUpdate() {
				if (this.downloading) {
					if (this.is_mandatory) {
						return uni.showToast({
							title: '下载中，请稍后……',
							icon: 'none',
							duration: 500
						})
					}
					uni.showModal({
						title: '是否取消下载？',
						cancelText: '否',
						confirmText: '是',
						success: res => {
							if (res.confirm) {
								if (downloadTask !== null) downloadTask!.abort()
								this.closePopup()
							}
						}
					});
					return;
				}
				this.closePopup()
			},
			closePopup() {
				this.shown = false
				if (this.showTabbar) {
					uni.showTabBar()?.then(_ => { })?.catch(_ => { })
				}

				this.downloadSuccess = false
				this.downloading = false
				this.downLoadPercent = 0
				this.downloadedSize = 0
				this.packageFileSize = 0
				this.tempFilePath = ''

				this.installing = false;
				this.installed = false
				this.showTabbar = false

				this.$emit('close')
			},
			updateApp() {
				this.downloadPackage()
			},
			downloadPackage() {
				//下载包
				downloadTask = uni.downloadFile({
					url: this.url,
					success: res => {
						console.log('downloadFile res: ',res);
						if (res.statusCode == 200) {
							this.tempFilePath = res.tempFilePath
							this.downLoadComplete()
						}
					},
					fail: err => {
						console.log('downloadFile err: ', err);
					}
				});
				if (downloadTask !== null) {
					this.downloading = true;
					downloadTask!.onProgressUpdate(res => {
						this.downLoadPercent = parseFloat(res.progress.toFixed(0));
						this.downloadedSize = parseFloat((res.totalBytesWritten / Math.pow(1024, 2)).toFixed(2));
						this.packageFileSize = parseFloat((res.totalBytesExpectedToWrite / Math.pow(1024, 2)).toFixed(2));
					});
				}
			},
			downLoadComplete() {
				this.downloadSuccess = true;
				this.downloading = false;

				this.downLoadPercent = 0
				this.downloadedSize = 0
				this.packageFileSize = 0

				downloadTask = null;

				// 强制更新，直接安装
				if (this.is_mandatory) {
					this.installPackage();
				}
			},
			installPackage() {
				this.installing = true;
				// #ifdef APP-PLUS
				uni.installApk({
					filePath: this.tempFilePath,
					success: _ => {
						console.log('installApk success');
						this.installing = false;
						this.installed = true;
					},
					fail: err => {
						console.log('installApk fail');
						// 安装失败需要重新下载安装包
						this.installing = false;
						this.installed = false;

						uni.showModal({
							title: '更新失败，请重新下载',
							content: `uni.installApk 错误码 ${err.errCode}`,
							showCancel: false
						});
					}
				});

				// 非wgt包，安装跳出覆盖安装，此处直接返回上一页
				if (!this.is_mandatory) {
					uni.navigateBack()
				}
				// #endif
			}
		}
	}
</script>

<style>
	.flex-center {
		/* #ifndef APP-NVUE | UNI-APP-X */
		display: flex;
		/* #endif */
		justify-content: center;
		align-items: center;
	}

	.mask {
		position: fixed;
		left: 0;
		top: 0;
		right: 0;
		bottom: 0;
		background-color: rgba(0, 0, 0, .65);
	}

	.content {
		position: relative;
		top: 0;
		width: 600rpx;
		background-color: transparent;
	}

	.text {
		font-family: Source Han Sans CN;
	}

	.content-top {
		width: 100%;
		border-bottom-color: #fff;
		border-bottom-width: 30rpx;
		border-bottom-style: solid;
	}

	.content-top-image {
		width: 100%;
		position: relative;
		bottom: -35rpx;
	}

	.content-top-text {
		font-size: 45rpx;
		font-weight: bold;
		color: #F8F8FA;
		position: absolute;
		width: 65%;
		top: 155rpx;
		left: 50rpx;
		z-index: 1;
	}

	.content-body {
		box-sizing: border-box;
		padding: 0 50rpx;
		width: 100%;
		background-color: #fff;
		border-bottom-left-radius: 30rpx;
		border-bottom-right-radius: 30rpx;
	}

	.title {
		font-size: 32rpx;
		font-weight: bold;
		color: #3DA7FF;
		line-height: 38px;
	}

	.footer {
		height: 150rpx;
		display: flex;
		align-items: center;
		justify-content: space-around;
	}

	.box-des-scroll {
		box-sizing: border-box;
		padding: 0 40rpx;
		height: 200rpx;
	}

	.box-des {
		font-size: 26rpx;
		color: #000000;
		line-height: 50rpx;
	}

	.progress-box {
		width: 100%;
	}

	.progress {
		width: 90%;
		height: 40rpx;
	}

	.content-bottom {
		height: 150rpx;
	}

	.close-img {
		width: 70rpx;
		height: 70rpx;
		z-index: 1000;
		position: relative;
		bottom: -50rpx;
		left: 265rpx;
	}

	.content-button {
		width: 100%;
		height: 80rpx;
		line-height: 80rpx;

		font-size: 30rpx;
		font-weight: 400;
		border-radius: 40rpx;

		text-align: center;

		background-color: #1785ff;
	}

	.flex-column {
		display: flex;
		flex-direction: column;
		align-items: center;
	}
</style>