import React, {Component} from 'react'
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import PropTypes from 'prop-types'
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import { is, fromJS } from 'immutable'
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import moment from 'moment'
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import { Upload, Button, Progress, notification } from 'antd'
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import { UploadOutlined } from '@ant-design/icons'
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import SparkMD5 from 'spark-md5'
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import Api from '@/api'
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import './index.scss'
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class FileUpload extends Component {
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static propTpyes = {
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config: PropTypes.object, // 表单信息
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onChange: PropTypes.func, // 表单变化
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}
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state = {
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percent: 0,
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accept: '',
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accepts: null,
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maxFile: null,
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showprogress: false,
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maxSize: 0,
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filelist: []
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}
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UNSAFE_componentWillMount () {
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const { config } = this.props
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let filelist = []
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let accept = ''
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let accepts = null
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this.setState({
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accept,
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accepts,
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filelist,
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maxSize: config.maxSize || 0,
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maxFile: config.maxfile
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})
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}
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shouldComponentUpdate (nextProps, nextState) {
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return !is(fromJS(this.state), fromJS(nextState))
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}
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onChange = ({ fileList }) => {
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fileList = fileList.map(item => {
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if (item.status === 'error' && /^<!DOCTYPE html>/.test(item.response)) {
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item.response = ''
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}
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return item
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})
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this.setState({filelist: fileList})
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}
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onRemove = file => {
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this.setState({filelist: []})
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this.props.onChange('')
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}
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onUpdate = (url, name) => {
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let filelist = fromJS(this.state.filelist).toJS()
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if (filelist[0] && url) {
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filelist[0].status = 'done'
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filelist[0].response = url
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}
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this.setState({filelist})
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this.props.onChange(url, name)
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}
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onFail = (msg) => {
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let filelist = this.state.filelist.map(item => {
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if (!item.url && !item.response && !item.status) {
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item.status = 'error'
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}
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return item
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})
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this.setState({filelist, showprogress: false, percent: 0})
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notification.warning({
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top: 92,
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message: msg || '文件上传失败！',
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duration: 5
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})
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}
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shardupload = (param, name) => {
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let form = new FormData()
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form.append('file', param.binary)
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form.append('fileMd5', param.fileMd5)
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form.append('shardingMd5', param.fileMd5)
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form.append('baseDomain', window.GLOB.baseurl)
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form.append('rootPath', 'Content/images/upload/')
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form.append('fileName', param.fileName)
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form.append('fileExt', param.fileType)
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form.append('shardingCnt', 1)
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form.append('shardingNo', 1)
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form.append('LoginUID', sessionStorage.getItem('LoginUID') || '')
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form.append('UserID', sessionStorage.getItem('UserID') || '')
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Api.getLargeFileUpload(form).then(res => {
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if (res.status) {
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if (res.urlPath) {
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this.onUpdate(res.urlPath, name)
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} else {
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this.onFail()
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}
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this.setState({
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percent: 100
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}, () => {
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setTimeout(() => {
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this.setState({
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showprogress: false,
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percent: 0
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})
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}, 200)
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})
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} else {
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this.onFail(res.message)
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}
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})
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}
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getuuid = () => {
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let uuid = []
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let _options = '0123456789abcdefghigklmnopqrstuv'
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for (let i = 0; i < 19; i++) {
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uuid.push(_options.substr(Math.floor(Math.random() * 0x20), 1))
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}
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uuid = uuid.join('')
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return uuid
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}
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beforeUpload = (file) => {
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const { accepts, maxSize } = this.state
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if (accepts && file.name) {
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let pass = false
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accepts.forEach(type => {
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if (new RegExp(type + '$', 'ig').test(file.name)) {
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pass = true
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}
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})
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if (!pass) {
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setTimeout(() => {
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this.onFail('文件格式错误！')
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}, 10)
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return false
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}
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}
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if (maxSize) {
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let fileSize = file.size / 1024 / 1024
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if (fileSize > maxSize) {
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setTimeout(() => {
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this.onFail(`文件大小不可超过${maxSize}M`)
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}, 10)
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return false
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}
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}
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this.setState({
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showprogress: true,
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percent: 0
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})
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// 兼容性的处理
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let spark = new SparkMD5.ArrayBuffer() // 对arrayBuffer数据进行md5加密，产生一个md5字符串
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let totalFileReader = new FileReader() // 用于计算出总文件的fileMd5
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let param = {}
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param.fileName = file.name.replace(/\.{1}[^.]*$/ig, '') // 文件名（去除后缀名）
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param.fileType = file.name.replace(/^.*\.{1}/ig, '') // 文件类型
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if (!/^[A-Za-z0-9]+$/.test(param.fileName)) { // 文件名称含有英文及数字之外字符时，名称系统生成
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param.fileName = moment().format('YYYYMMDDHHmmss') + this.getuuid()
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}
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totalFileReader.readAsArrayBuffer(file)
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totalFileReader.onload = (e) => { // 对整个totalFile生成md5
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spark.append(e.target.result)
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param.fileMd5 = spark.end() // 计算整个文件的fileMd5
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param.binary = file
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let _param = new FormData()
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_param.append('fileMd5', param.fileMd5)
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Api.getFilePreUpload(_param).then(res => {
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if (res.status && res.urlPath) {
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this.onUpdate(res.urlPath, file.name)
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this.setState({
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percent: 100
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}, () => {
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setTimeout(() => {
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this.setState({
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showprogress: false,
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percent: 0
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})
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}, 200)
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})
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} else {
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this.shardupload(param, file.name)
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}
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})
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}
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totalFileReader.onerror = () => {
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this.onFail('文件读取失败！')
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}
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return false
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}
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/**
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* @description 组件销毁，清除state更新
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*/
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componentWillUnmount () {
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this.setState = () => {
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return
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}
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}
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render() {
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const { showprogress, percent, filelist, accept } = this.state
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let uploadable = 'attach-form-container '
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if (filelist.length >= 1) {
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uploadable += 'limit-fileupload'
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}
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const props = {
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name: 'file',
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disabled: showprogress,
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listType: 'text',
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fileList: filelist,
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action: null,
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accept: accept,
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method: 'post',
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multiple: false,
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onChange: this.onChange,
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onRemove: this.onRemove,
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beforeUpload: this.beforeUpload,
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className: uploadable
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}
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return (
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<Upload {...props}>
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<Button>
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<UploadOutlined /> 点击上传
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</Button>
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{showprogress ? <Progress percent={percent} size="small" /> : null}
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</Upload>
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)
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}
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}
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export default FileUpload
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