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98 lines
2.2 KiB
JavaScript
98 lines
2.2 KiB
JavaScript
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function getError (option, xhr) {
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const msg = `cannot post ${option.action} ${xhr.status}'`
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const err = new Error(msg)
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err.status = xhr.status
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err.method = 'post'
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err.url = option.action
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return err
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}
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function getBody (xhr) {
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const text = xhr.responseText || xhr.response
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if (!text) {
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return text
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}
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try {
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return JSON.parse(text)
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} catch (e) {
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return text
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}
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}
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// option {
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// onProgress: (event: { percent: number }): void,
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// onError: (event: Error, body?: Object): void,
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// onSuccess: (body: Object): void,
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// data: Object,
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// filename: String,
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// file: File,
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// withCredentials: Boolean,
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// action: String,
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// headers: Object,
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// }
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export default function upload (option) {
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const xhr = new window.XMLHttpRequest()
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if (option.onProgress && xhr.upload) {
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xhr.upload.onprogress = function progress (e) {
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if (e.total > 0) {
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e.percent = e.loaded / e.total * 100
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}
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option.onProgress(e)
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}
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}
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const formData = new window.FormData()
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if (option.data) {
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Object.keys(option.data).map(key => {
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formData.append(key, option.data[key])
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})
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}
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formData.append(option.filename, option.file)
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xhr.onerror = function error (e) {
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option.onError(e)
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}
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xhr.onload = function onload () {
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// allow success when 2xx status
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// see https://github.com/react-component/upload/issues/34
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if (xhr.status < 200 || xhr.status >= 300) {
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return option.onError(getError(option, xhr), getBody(xhr))
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}
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option.onSuccess(getBody(xhr), xhr)
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}
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xhr.open('post', option.action, true)
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// Has to be after `.open()`. See https://github.com/enyo/dropzone/issues/179
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if (option.withCredentials && 'withCredentials' in xhr) {
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xhr.withCredentials = true
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}
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const headers = option.headers || {}
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// when set headers['X-Requested-With'] = null , can close default XHR header
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// see https://github.com/react-component/upload/issues/33
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if (headers['X-Requested-With'] !== null) {
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xhr.setRequestHeader('X-Requested-With', 'XMLHttpRequest')
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}
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for (const h in headers) {
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if (headers.hasOwnProperty(h) && headers[h] !== null) {
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xhr.setRequestHeader(h, headers[h])
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}
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}
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xhr.send(formData)
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return {
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abort () {
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xhr.abort()
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},
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}
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}
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