136 lines
4.3 KiB
JavaScript
136 lines
4.3 KiB
JavaScript
import Presentations from '/imports/api/presentations';
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import Auth from '/imports/ui/services/auth';
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import { makeCall } from '/imports/ui/services/api';
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const CONVERSION_TIMEOUT = 300000;
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// fetch doens't support progress. So we use xhr which support progress.
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const futch = (url, opts = {}, onProgress) => new Promise((res, rej) => {
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const xhr = new XMLHttpRequest();
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xhr.open(opts.method || 'get', url);
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Object.keys(opts.headers || {})
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.forEach(k => xhr.setRequestHeader(k, opts.headers[k]));
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xhr.onload = (e) => {
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if (e.target.status !== 200) {
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return rej({ code: e.target.status, message: e.target.statusText });
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}
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return res(e.target.responseText);
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};
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xhr.onerror = rej;
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if (xhr.upload && onProgress) {
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xhr.upload.addEventListener('progress', onProgress, false);
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}
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xhr.send(opts.body);
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});
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const getPresentations = () =>
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Presentations
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.find()
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.fetch()
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.map(presentation => ({
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id: presentation.id,
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filename: presentation.name,
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isCurrent: presentation.current || false,
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upload: { done: true, error: false },
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conversion: presentation.conversion || { done: true, error: false },
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}));
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const observePresentationConversion = (meetingId, filename) => new Promise((resolve, reject) => {
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const conversionTimeout = setTimeout(() => {
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reject({
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filename,
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message: 'Conversion timeout.',
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});
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}, CONVERSION_TIMEOUT);
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const didValidate = (doc) => {
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clearTimeout(conversionTimeout);
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resolve(doc);
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};
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Tracker.autorun((c) => {
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/* FIXME: With two presentations with the same name this will not work as expected */
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const query = Presentations.find({ meetingId });
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query.observe({
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changed: (newDoc) => {
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if (newDoc.name !== filename) return;
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if (newDoc.conversion.done) {
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c.stop();
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didValidate(newDoc);
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}
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},
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});
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});
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});
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const uploadAndConvertPresentation = (file, meetingID, endpoint, onError, onProgress) => {
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const data = new FormData();
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data.append('presentation_name', file.name);
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data.append('Filename', file.name);
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data.append('fileUpload', file);
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data.append('conference', meetingID);
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data.append('room', meetingID);
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// TODO: Theres no way to set a presentation as downloadable.
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data.append('is_downloadable', false);
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const opts = {
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method: 'POST',
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body: data,
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};
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return futch(endpoint, opts, onProgress)
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.then(() => observePresentationConversion(meetingID, file.name))
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// Trap the error so we can have parallel upload
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.catch((error) => {
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onError(error);
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return observePresentationConversion(meetingID, file.name);
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});
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};
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const uploadAndConvertPresentations = (presentationsToUpload, meetingID, uploadEndpoint) =>
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Promise.all(
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presentationsToUpload.map(p =>
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uploadAndConvertPresentation(p.file, meetingID, uploadEndpoint, p.onError, p.onProgress)),
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);
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const setPresentation = presentationID => makeCall('setPresentation', presentationID);
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const removePresentation = presentationID => makeCall('removePresentation', presentationID);
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const removePresentations = presentationsToRemove =>
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Promise.all(presentationsToRemove.map(p => removePresentation(p.id)));
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const persistPresentationChanges = (oldState, newState, uploadEndpoint) => {
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const presentationsToUpload = newState.filter(_ => !oldState.includes(_));
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const presentationsToRemove = oldState.filter(_ => !newState.includes(_));
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const currentPresentation = newState.find(_ => _.isCurrent);
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return new Promise((resolve, reject) =>
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uploadAndConvertPresentations(presentationsToUpload, Auth.meetingID, uploadEndpoint)
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.then((presentations) => {
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if (!presentations.length && !currentPresentation) return Promise.resolve();
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// If its a newly uploaded presentation we need to get its id from promise result
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const currentPresentationId =
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currentPresentation.id !== currentPresentation.filename ?
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currentPresentation.id :
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presentations[presentationsToUpload.findIndex(_ => _ === currentPresentation)].id;
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return setPresentation(currentPresentationId);
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})
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.then(removePresentations.bind(null, presentationsToRemove))
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.then(resolve)
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.catch(reject),
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);
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};
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export default {
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getPresentations,
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persistPresentationChanges,
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};
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