<template>
	<view class="camera">
		<view class="camera-container" v-if="showType === 1">
			<cover-view class="header-box" :style="{'height':navHeight/2 + 'px'}">
				<cover-view class="inner">
					<cover-image @click="setCameraInfo('devicePosition')" class="icon" mode="aspectFit"
						src="/static/photo/icon-switch.png"></cover-image>
					<cover-image @click="setCameraInfo('flash')" class="icon" mode="aspectFit"
						:src="'/static/photo/icon-flash-' + cameraInfo.flash +'.png'"></cover-image>
					<cover-image v-if="currentItem.partnerCompanyId" @click="changeType(3)" class="icon" mode="aspectFit"
						src="/static/photo/icon-setting.png"></cover-image>
				</cover-view>
			</cover-view>
			<camera class="camera-box" v-if="cameraChange&&!standardShow" :device-position="cameraInfo.devicePosition"
				:flash="cameraInfo.flash" :style="{'height':cameraHeight/2 + 'px','top':parseInt(navHeight/2) + 'px'}"
				@error="cameraError">
				<cover-view class="mark-box">
					<cover-view class="txt big" v-if="titleTxt">{{titleTxt}}</cover-view>
					<cover-view class="txt" v-for="(txt,index) in settingTxtArr" :key="index">{{txt || '获取中'}}</cover-view>
					<!-- <cover-view class="txt u-m-t-10">维度：{{waterInfo.latitude || '正在获取中...'}}</cover-view>
					<cover-view class="txt u-m-t-10">地址：{{waterInfo.address || '正在获取中...'}}</cover-view>
					<cover-view class="txt u-m-t-10">时间：{{waterInfo.date || '正在获取中...'}}</cover-view> -->
				</cover-view>
				<cover-image class="mark-water" mode="aspectFit" :src="waterInfo.markImage"></cover-image>
			</camera>
			<cover-view class="bottom-box" v-if="!standardShow">
				<cover-image class="icon" src='/static/photo/icon-back.png' mode="" @click="goBack"></cover-image>
				<cover-image class='icon-take icon' src='/static/photo/icon-take.png' @click="$u.debounce(takePhoto, 500)"> </cover-image>
				<cover-image class='icon' src='/static/photo/icon-standard.png' @click="standardShow = true" v-if="standardStatus"> </cover-image>
				<view class='icon' v-else></view>
			</cover-view>
			<canvas canvas-id="canvas" id="photoCanvas" class="canvas"
				:style="{'width':750 + 'rpx','height': cameraHeight + 'rpx'}"></canvas>
			<view v-if="standardShow" class="page-mask" :z-index="10000">
				<photo-standard :currentItem="currentItem" />
				<view class="btn-close">
					<image @click="closeShadow" class="icon icon-close" mode="aspectFit" src="/static/photo/icon-close.png"></image>
				</view>
			</view>
		</view>
		<photo-preview v-if="showType === 2" @changeType="changeType" @finish="finish" :upload="upload" />
		<photo-setting v-if="showType === 3" @changeType="changeType" @changeWatermark="changeWatermark"/>
	</view>
</template>

<script>
	const formatSize = function(size, pointLength, units) {
		var unit;
		units = units || [ 'B', 'K', 'M', 'G' ];
		while ( (unit = units.shift()) && size > 1024 ) {
				size = size / 1024;
		}
		return (unit === 'B' ? size : size.toFixed( pointLength === undefined ? 2 : pointLength)) + unit;
	}

	let r = require("@/libs/bmap-wx.min.js");
	let h = new r.BMapWX({
		// ak: "rpVq5d3yxaRCoKzVwmFMo0o4iC524CAG",
		ak: "iXsGdyEcm1iQONoUPyEp0hrBTLCuOaW2"
	});
	import standard from '@/components/photo/standard.vue'
	import preview from '@/components/photo/preview.vue'
	import setting from '@/components/photo/setting.vue'
	export default {
		props: {
			currentItem: { // 对应的规范item
				default () {
					return {
						_id: '', // 规格ID
						system_id: '', // 系统ID
						brand_id: '', // 品牌ID
						classify_id: '', // 分类ID
						images: [], // 拍照要求示意图
						main_point: [] // 要点
					}
				}
			},
			upload: { // 是否默认上传 true：会自动上传好图片并返回绝对路径 false: 只返回临时路径，需要在父组件做上传动作
				type: Boolean,
				default () {
					return true
				}
			},
			num: {
				type: Number,
				default () {
					return 10
				}
			}
		},
		components: {
			'photo-standard': standard,
			'photo-preview': preview,
			'photo-setting': setting,
		},
		data() {
			return {
				showType: 1,
				standardShow: false,
				cameraInfo: {
					devicePosition: 'back',
					flash: 'off'
				},
				waterInfo: {
					longitude: '', // 经度
					latitude: '', // 维度
					address: '', //地址
					date: '', //日期
					markImage: 'https://qn-static.banshouhui.com/live_mark.png'
				},
				tempImgs: {
					'markImage': 'https://qn-static.banshouhui.com/live_mark.png', // 拍照水印
					'origin': '', // 无水印照片
					'mixWater': '', // 有水印照片
				},
				authSetting: {
					camera: false, // 相机授权
					location: false, // 位置授权
				},
				navHeight: 130,
				cameraWidth: 750,
				cameraHeight: 1000, // (4 / 3 * 750) 图片比例4：3
				ratio: 0,
				cameraChange: false,
				waterSetting: null,
				shadowInitShow: false, // 第一次进入页面需显示弹窗
				standardStatus: false, // 是否显示拍照要求
			}
		},
		created(e) {
			const photo = getApp().globalData.photo
			getApp().trackPage('拍照页')
			photo.allImages = []
			
			const length = (this.num > 10 || this.num < 0 || typeof this.num !== 'number') ? 0 : 10 - this.num
			photo.currentItemLength = length
			// this.ctx = uni.createCameraContext();
			this.updateTime()

			const locationData = uni.getStorageSync('locationData')
			const validityTime = 60000
			if (Date.now() - locationData.locationTime < validityTime) { // 1分钟内不重复请求位置信息
				this.waterInfo.latitude = locationData.waterInfo.latitude
				this.waterInfo.longitude = locationData.waterInfo.longitude
				this.baiduLocation()
			} else {
				this.getLocation()
			}

			this.getMarkPath()

			this.initData()
			photo.currentItem = this.currentItem
			if (this.currentItem.images && this.currentItem.images.length > 0) {
				this.shadowInitShow = false
				this.standardShow = true
				this.standardStatus = true
			}
		},
		computed: {
			titleTxt() {
				const waterSetting = this.waterSetting
				let txt = ''
				if (!waterSetting || !waterSetting.lowerLeft) {
					return ''
				}
				txt = waterSetting.lowerLeft && waterSetting.lowerLeft.title || ''
				return txt
			},
			settingTxtArr() {
				let arr = []
				// 包含经纬度
				const waterInfo = this.waterInfo
				arr = ['经度：' + waterInfo.longitude, '纬度：' + waterInfo.latitude, '地址：' + waterInfo.address, '时间：' +
					waterInfo.date
				]
				let settingTxtArr = []
				const typeArr = ['经度', '纬度', '地址', '时间']
				const waterSetting = this.waterSetting
				if (!waterSetting || !waterSetting.lowerLeft || !waterSetting.lowerLeft.body) {
					return arr
				}
				const settingArr = waterSetting.lowerLeft.body
				settingArr.map(item => {
					const idx = typeArr.indexOf(item.watemarkType)
					if (item.enable && (idx > -1 || (item.watemarkValue && item.watemarkText))) {
						if (idx > -1) {
							settingTxtArr.push(arr[idx])
						} else {
							settingTxtArr.push(item.watemarkText + '：' + item.watemarkValue)
						}
					}
				})
				return settingTxtArr
			}

		},
		watch: {},
		mounted() {
			// 默认开启弹窗
			const photo = getApp().globalData.photo
			this.waterSetting =  photo.waterSetting
			this.standardShow = this.shadowInitShow
			this.cameraChange = true
			// this.initData()
		},
		destroyed(){
			this.cameraChange = false
		},
		methods: {
			closeShadow() {
				this.shadowInitShow = false
				this.standardShow = false
			},
			goBack() {
				uni.showTabBar()
				this.$emit('close')
			},
			finish() {
				uni.showTabBar()
				const photo = getApp().globalData.photo
				this.$emit('close', photo.allImages)
			},
			changeType(type) {
				this.showType = type
			},
			changeWatermark(watermark){
				this.waterSetting = watermark
			},
			updateTime() {
				this.waterInfo.date = this.getTime()
			},
			setCameraInfo(type) {
				// 设置相机前置后置、闪关灯等
				const cameraInfo = this.cameraInfo
				let val = cameraInfo[type]
				switch (type) {
					case 'devicePosition':
						val = val === 'back' ? 'front' : 'back'
						break;
					case 'flash':
						val = val === 'off' ? 'torch' : 'off'
						break;
						defalut:

							break;
				}
				this.cameraInfo[type] = val
			},
			initData() {
				const globalData = getApp().globalData
				this.navHeight = globalData.navHeight
				this.cameraHeight = parseInt(globalData.safeHeight*2 - globalData.navHeight - 200)
				this.ratio = globalData.screenHeight / globalData.rpxScreenHeight
				this.waterSetting = globalData.photo.waterSetting
			},
			baiduLocation() {
				// 百度sdk解析经纬度
				let waterInfo = this.waterInfo
				const t = function() {
					let t = {
						success: function(res) {
							let e = res.wxMarkerData[0];
							let i = e.address;
							waterInfo.address = i
						},
						fail: function(err) {
							console.log(err, 'err')
						}
					};
					if (waterInfo.latitude && waterInfo.longitude) {
						let e = waterInfo.latitude + "," + waterInfo.longitude;
						t.location = e;
					}
					h.regeocoding(t);
				};
				t()
			},
			cameraError(e) {
				this.showSettingModal('camera')
			},
			//获取位置
			getLocation() {
				let that = this
				const waterInfo = this.waterInfo
				uni.getLocation({
					type: 'gcj02',
					success: function(res) {
						waterInfo.longitude = parseFloat(res.longitude).toFixed(4)
						waterInfo.latitude = parseFloat(res.latitude).toFixed(3)
						const data = {
							waterInfo: {
								latitude: waterInfo.latitude,
								longitude: waterInfo.longitude
							},
							locationTime: Date.now()
						}
						uni.setStorage({
							key: 'locationData',
							data: data,
						})
						that.baiduLocation()
					},
					fail(err) {
						that.showSettingModal('location')
						// that.showLocationAuthModal('')
					}
				});
			},
			showSettingModal(type) {
				type = type || 'camera'
				const self = this
				let authSetting = {
					'camera': {
						content: '将无法进行拍照',
						method: ''
					},
					'location': {
						content: '将无法定位当前位置',
						method: ''
					},
					'writePhotosAlbum': {
						content: '将无法保存图片到本地',
						method: ''
					}
				}
				let content = authSetting[type].content
				uni.showModal({
					content: '拒绝授权' + content + '，是否去设置打开？',
					confirmText: "确认",
					cancelText: '取消',
					success(res) {
						if (res.confirm) {
							self.openSetting()
						} else if(res.cancel) {
							if (type === 'camera' || type === 'location') self.goBack()
						}
					},
					fail() {
					}
				})
			},
			openSetting() {
				// 打开设置
				let self = this
				this.cameraChange = false
				wx.openSetting({
					success(res) {
						const authSetting = res.authSetting
						self.cameraChange = true
						if (authSetting['scope.userLocation']) {
							// 位置授权成功
							self.authSetting.location = true
							self.getLocation()
						} else {
							self.showSettingModal('location')
						}
						if (res.authSetting['scope.camera']) {
							self.authSetting.camera = true
						}
						if (res.authSetting['scope.writePhotosAlbum']) {
							self.authSetting.writePhotosAlbum = true
						}
					}
				})
			},

			//获取 水印 本地缓存路径
			getMarkPath: function() {
				uni.downloadFile({
					url: this.waterInfo.markImage, //仅为示例，并非真实的资源
					success: (res) => {
						if (res.statusCode === 200) {
							this.tempImgs.markImage = res.tempFilePath
						}
					},
					fail() {
						console.log('水印图片 下载失败')
					}
				})

			},
			/*  ----------------------  拍照流程  ---------------------- */
			// 第一步：拍照
			takePhoto() {
				wx.createCameraContext().takePhoto({
					quality: "high"
				}).then(res => {
					this.tempImgs.origin = res.tempImagePath
					this.drawCanvas(res.tempImagePath)
				})
			},
			// 第二步：绘制画布
			drawCanvas: async function(tempPath) {
				uni.showLoading({
					title: '数据处理中...',
					icon: 'loading'
				})
				const waterSetting = this.waterSetting
				const globalTempPath = getApp().globalData.photo.tempPath
				const ratio = this.ratio
				// const ratio = 0.5
				let canvasWidth = this.cameraWidth * ratio
				let canvasHeight = this.cameraHeight * ratio
				const waterInfo = this.waterInfo
				this.showImage = true
				const settingTxtArr = this.settingTxtArr
				//将原图画到canvas上面
				let canvas = uni.createCanvasContext("canvas", this)
				canvas.rect(0, 0, canvasWidth, canvasHeight)
				canvas.drawImage(tempPath, 0, 0, canvasWidth, canvasHeight)
				// this.canvas.draw()
				let txtHeight = 18
				let h = 1
				//加入 水印文字

				for (let i = settingTxtArr.length - 1; i >= 0; i--) {
					txtHeight = 20
					canvas.setFontSize(15)
					canvas.setFillStyle('#f2f2f2')
					let txt = settingTxtArr[i]
					if(txt.indexOf('时间')>=0){
						canvas.fillText(txt, 10, canvasHeight - txtHeight * h++);
					}else{
						if(txt.length>22){
							canvas.fillText(txt.substr(22,22), 10, canvasHeight - txtHeight * h++);
							canvas.fillText(txt.substr(0,22), 10, canvasHeight - txtHeight * h++);
						}else{
							canvas.fillText(txt, 10, canvasHeight - txtHeight * h++);
						}
					}
					// canvas.fillText(txt, 10, canvasHeight - txtHeight * h++);
				}
				const title = this.titleTxt
				if (title) {
					canvas.save()
					let titleHeight = title.length > 14 ? 60 : 30
					let rectWidth = title.length > 14 ? 215 : title.length*10
					canvas.setFillStyle('rgba(34, 114, 255, 0.6)')
					canvas.fillRect(10, canvasHeight - txtHeight * h - titleHeight, 215, titleHeight)
					canvas.restore()
					canvas.setFontSize(20)
					canvas.setFillStyle('#f2f2f2')
					// canvas.setTextAlign('center')
					if (title.length > 14) {
						canvas.fillText(title.substr(14, 14), 10, canvasHeight - txtHeight * h++ + 20);
					}
					canvas.fillText(title.substr(0, 14), 10, canvasHeight - txtHeight * h++ - titleHeight / 2 + 10);
				}
				// if (this.waterSetting && this.waterSetting.mid_text) {
					//加入 水印图片
					canvas.drawImage(this.tempImgs.markImage, canvasWidth / 2 - 100, canvasHeight / 2 - 25, 200, 50)
				// }
				// canvas.drawImage(this.tempImgs.markImage, canvasWidth / 2 - 100, canvasHeight / 2 - 25, 200, 50)
				canvas.draw(false,
					setTimeout(() => {
						uni.canvasToTempFilePath({
							width: canvasWidth,
							height: canvasHeight,
							canvasId: 'canvas',
							success: async (res) => {
								const size = await this.getImageSize(res.tempFilePath)
								this.tempImgs.mixWater = res.tempFilePath
								globalTempPath.origin = this.tempImgs.origin
								globalTempPath.size = formatSize(size) || ''
								globalTempPath.mixWater = res.tempFilePath
								let timer = setTimeout(()=>{
									//this.goPage('/pages/photo/preview')
									this.changeType(2)
								},0)
								// this.saveToLocal(res.tempFilePath)
							},
							fail: (res) => {
								console.log(res);
							},
							complete: () => {
								uni.hideLoading();
							}
						}, this);
					}, 50))
			},
			// 第三步：保存到本地
			saveToLocal(tempImagePath) {
				//has_origin //是否保存原图
				let that = this
				uni.saveImageToPhotosAlbum({
					filePath: tempImagePath,
					success() {
						uni.showToast({
							icon: 'none',
							title: '已将照片保存到本地相册'
						})
					},
					fail() {}
				})
			},
			getImageSize(path) {
				return new Promise((resolve, reject) => {
					wx.getFileInfo({
						filePath: path,
						success (res) {
							resolve(res.size)
						},
						fail() {
							resolve(0)
						}
					})
				})
			},
			showPreviewFn(img) {
				uni.previewImage({
					current: 0,
					urls: [img]
				});
			},
			//获取当前时间
			getTime: function() {
				let d = new Date();
				let year = d.getFullYear();
				let month = d.getMonth() + 1;
				let date = d.getDate();
				let days = new Array("日", "一", "二", "三", "四", "五", "六");
				let day = d.getDay();
				let hour = (d.getHours() < 10) ? ("0" + d.getHours()) : d.getHours();
				let min = (d.getMinutes() < 10) ? ("0" + d.getMinutes()) : d.getMinutes();
				let sec = (d.getSeconds() < 10) ? ("0" + d.getSeconds()) : d.getSeconds();
				let now = year + "年" + month + "月" + date + "日 " + hour + ":" + min + ":" + sec;

				return now
			},
		}
	}
</script>
<style scoped lang="scss">
	.camera {
		position:fixed;
		padding:0;
		margin:0;
		top:0;
		left:0;
		width: 100%;
		height: 100%;
		z-index: 999999;
	}
	.camera-container {
		// padding-top:var(--status-bar-height);
		min-height: 100vh;
		background-color: black;
	}

	.header-box {
		// padding:10rpx 20rpx;
		position: relative;

		.inner {
			display: flex;
			position: absolute;
			left: 0;
			right: 0;
			bottom: 0;
		}

		.icon {
			margin: 20rpx;
			display: block;
			width: 44rpx;
			height: 44rpx;
		}
	}

	.camera-box {
		position: absolute;
		left:0;
		width: 100%;
		// height: 100vh;
		z-index: 1;
	}

	.mark-water {
		position: absolute;
		left: 50%;
		top: 50%;
		transform: translate(-50%, -50%);
		width: 360rpx;
		height: 90rpx;
		z-index: 6;
	}

	.mark-box {
		position: absolute;
		left: 0;
		bottom: 0;
		padding: 20rpx;

		.txt {
			max-width: 500rpx;
			max-height: 80rpx;
			overflow: hidden;
			margin-top: 5rpx;
			line-height: 40rpx;
			white-space: normal;
			font-size: 28rpx;
			color: #fff;

			&.big {
				padding: 10rpx;
				margin-bottom: 10rpx;
				width: 430rpx;
				line-height: 40rpx;
				font-size: 32rpx;
				background-color: rgba(34, 114, 255, 0.6);
			}
		}
	}

	.bottom-box {
		position: absolute;
		left: 0;
		right: 0;
		bottom:0;
		// bottom: constant(safe-area-inset-bottom);
		// bottom: env(safe-area-inset-bottom);
		z-index: 5;
		box-sizing: border-box;
		height: 200rpx;
		display: flex;
		justify-content: space-between;
		padding: 20rpx 78rpx;
		align-items: center;
		background-color: black;

		.txt {
			white-space: nowrap;
			line-height: 60rpx;
			color: #fff;
		}

		.icon {
			display: block;
			width: 92rpx;
			height: 92rpx;

			&.icon-take {
				width: 144rpx;
				height: 144rpx;
			}
		}
	}

	.canvas {
		position: fixed;
		left: -750rpx;
		top: 0;
	}

	// 拍照规范
	.page-mask {
		position: fixed;
		bottom: 0;
		bottom: constant(safe-area-inset-bottom);
		bottom: env(safe-area-inset-bottom);
		z-index: 1000;
		width: 750rpx;
		height: 100vh;
		// padding: 0 30rpx;
		box-sizing: border-box;
		background-color: rgba(0, 0, 0, 0.8);

		.icon {
			width: 92rpx;
			height: 92rpx;
		}

		.btn-close {
			position: absolute;
			bottom: 0;
			bottom: constant(safe-area-inset-bottom);
			bottom: env(safe-area-inset-bottom);
			left: 0;
			right: 0;
			height: 200rpx;
			z-index: 100;
			display: flex;
			justify-content: center;
			align-items: center;
		}
	}
</style>