86 lines
1.7 KiB
JavaScript
86 lines
1.7 KiB
JavaScript
function getError(action, option, xhr) {
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let msg;
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if (xhr.response) {
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msg = `${xhr.response.error || xhr.response}`;
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} else if (xhr.responseText) {
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msg = `${xhr.responseText}`;
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} else {
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msg = `fail to post ${action} ${xhr.status}`;
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}
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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 = 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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export default function upload(option) {
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if (typeof XMLHttpRequest === 'undefined') {
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return;
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}
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const xhr = new XMLHttpRequest();
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const action = option.action;
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if (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 FormData();
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if (option.data) {
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Object.keys(option.data).forEach(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, option.file.name);
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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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if (xhr.status < 200 || xhr.status >= 300) {
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return option.onError(getError(action, option, xhr));
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}
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option.onSuccess(getBody(xhr));
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};
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xhr.open('post', action, true);
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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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for (let item in headers) {
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if (headers.hasOwnProperty(item) && headers[item] !== null) {
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xhr.setRequestHeader(item, headers[item]);
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}
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}
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xhr.send(formData);
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return xhr;
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}
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