import uploader from '@/plugins/uploader/index.js'
const globalUrl = process.uniEnv || {}

const randomChar = function(l, url = "") {
	const x = "0123456789qwertyuioplkjhgfdsazxcvbnm";
	let tmp = "";
	let time = new Date();
	for (let i = 0; i < l; i++) {
		tmp += x.charAt(Math.ceil(Math.random() * 100000000) % x.length);
	}
	return (
		"scn/file/" +
		url +
		time.getTime() +
		tmp
	);
}

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;
}

export default {
	name: 'upload',
	components: {},
	data() {
		return {
			imgList:[],
			// 上传文件种类：0--头像、1--证件、2--身份证
			categories: ['avatar', 'cert', 'id'],
		};
	},
	created() {
		// this.initQiniu()
	},
	methods: {	
		async uploadPath(type){
			// 可以直接上传path
			const self = this
			let imgList = []
			let options = {
				files:[] // 文件路径
			}
			if(type==='qiniu'){
				let res = await uploader.qnFileUpload(options)
				return
			}
			let res = await uploader.urlFileUpload(options)
		},
		/**
		 * 存储图片到任务队列
		 * @param {Array} files 图片路径
		 */
		async saveToTask(files, order) {
			// 生成key返回，然后把key放到异步上传的任务队列
			let lists = files.map(v => {
				const key = randomChar(10)
				return {
					time: this.$u.timeFormat(new Date().getTime(), 'yyyy-mm-dd hh:MM:ss'),
					key: key,
					path: v.path,
					size: formatSize(v.size) || '',
					src: key,
					...order
				}
			})
			
			const data = JSON.parse(JSON.stringify(this.uploadTask))
			const saveLists = data.concat(lists)
		
			const newTotal = this.uploadTotal + lists.length

			setTimeout(() => {
				this.$u.vuex('uploadTask', saveLists)
				this.$u.vuex('uploadTotal', newTotal)
			}, 1000)
			
			//this.$u.vuex('uploadSuccess', 0)
			return lists
		},
		/**
		 * 选择图片
		 * @param {Object} data option
		 */
		async chooseImg(data, order){
			const self = this
			return new Promise((resolve, reject) => {
				uni.chooseImage({
					count: data.count || 9, //默认9
					sizeType: data.sizeType || ['original', 'compressed'], //可以指定是原图还是压缩图，默认二者都有
					sourceType: data.sourceType || ['album', 'camera'], //从相册选择
					success: function(res) {
						const lists = self.saveToTask(res.tempFiles, order)
						resolve(lists)
					},
					fail: err => {
						console.log("err", err)
					}
				})
			})
		},
		// 保存图片到本地
		saveFiles(path) {
			return new Promise((resolve, reject) => {
				uni.saveFile({
					tempFilePath: path,
					success(e) {
						const { savedFilePath } = e
						const key = randomChar(10)
						const img = {
							key: key,
							path: savedFilePath,
							src: key
						}
						resolve(img)
					},
					fail: reject
				})
			})
		},
		/**
		 * 上传图片公用组件
		 * @param {Object} type 文件上传方式
		 * @param {Object} attr 文件属性：图片种类[category]（身份证、证件、头像）;
		 * 	图片上传其他配置[options】（如，选择图片或拍摄options.consourceType，['album', 'camera']；）其他
		 */
		async chooseImage(type, attr={}){
			const self = this
			let imgList = []
			if(type==='qiniu'){
				// 图片种类
				let category = attr && attr.category || self.categories[0]
				let config = attr && attr.options || {} // 图片上传参数配置
				// 七牛上传
				let options = {
					onProgressUpdate(res){
						let item = {
							path:res.path, // 图片临时缓存路径
							key:'', // 图片上传成功后相对路径
							src:'', // 访问图片的绝对路径
							progress:res.progress // 图片上传进度
						}
						if(res.fileIndex<imgList.length){
							imgList[res.fileIndex].progress = res.progress
						}else{
							imgList.push(item)
						}
						imgList[res.fileIndex]
						self.imgList = imgList
						// 多文件上传每个文件进度条
					},
					onEachUpdate(res){
						// 多文件上传每个文件上传成功触发
						if(imgList.length>res.fileIndex){
							imgList[res.fileIndex].key = res.key
							imgList[res.fileIndex].src = res.key // uploader.qiniuTokenObj.visitPrefix + res.key
						}
						self.imgList = imgList
					},
					cardType: category,
					...config
				}
				
				// 不需要进度条等可直接获取
				let res = await uploader.qnImgUpload(options)
				// let imgList = res.map(item=>{
				// 	return {
				// 		key:item,
				// 		src:uploader.qiniuTokenObj.visitPrefix + item
				// 	}
				// })
				// this.imgList = imgList
				return
			}
			// 本地服务上传
			let res = await uploader.urlUpload()
			this.imgList = res
		},
		perviewImg(index) {
			let urls = []
			this.imgList.map(item => {
				urls.push(item.src)
			})
			uni.previewImage({
				current: index,
				urls: urls
			});
		},
		removeImg(index) {
			this.imgList.splice(index, 1)
			// this.$emit('image-change', this.imgList) //将图片回传父页面
		},
	
	}
}