demarches-normaliennes/app/javascript/new_design/dossiers/auto-upload-controller.js
2020-03-31 13:09:44 +02:00

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import Uploader from '../../shared/activestorage/uploader';
import ProgressBar from '../../shared/activestorage/progress-bar';
import { ajax, show, hide, toggle } from '@utils';
// Given a file input in a champ with a selected file, upload a file,
// then attach it to the dossier.
//
// On success, the champ is replaced by an HTML fragment describing the attachment.
// On error, a error message is displayed above the input.
export default class AutoUploadController {
constructor(input, file) {
this.input = input;
this.file = file;
}
async start() {
try {
this._begin();
// Sanity checks
const autoAttachUrl = this.input.dataset.autoAttachUrl;
if (!autoAttachUrl) {
throw new Error('Lattribut "data-auto-attach-url" est manquant');
}
const champ = this.input.closest('.editable-champ[data-champ-id]');
if (!champ) {
throw new Error('Impossible de trouver lélément ".editable-champ"');
}
const champId = champ.dataset.champId;
// Upload the file (using Direct Upload)
let blobSignedId = await this._upload();
// Attach the blob to the champ
// (The request responds with Javascript, which displays the attachment HTML fragment).
await this._attach(champId, blobSignedId, autoAttachUrl);
// Everything good: clear the original file input value
this.input.value = null;
} catch (error) {
this._failed(error);
throw error;
} finally {
this._done();
}
}
_begin() {
this.input.disabled = true;
this._hideErrorMessage();
}
async _upload() {
const uploader = new Uploader(
this.input,
this.file,
this.input.dataset.directUploadUrl
);
return await uploader.start();
}
async _attach(champId, blobSignedId, autoAttachUrl) {
// Now that the upload is done, display a new progress bar
// to show that the attachment request is still pending.
const progressBar = new ProgressBar(this.input, champId, this.file);
progressBar.progress(100);
progressBar.end();
const attachmentRequest = {
url: autoAttachUrl,
type: 'PUT',
data: `champ_id=${champId}&blob_signed_id=${blobSignedId}`
};
await ajax(attachmentRequest);
// The progress bar has been destroyed by the attachment HTML fragment that replaced the input,
// so no further cleanup is needed.
}
_failed(error) {
if (!document.body.contains(this.input)) {
return;
}
let progressBar = this.input.parentElement.querySelector('.direct-upload');
if (progressBar) {
progressBar.remove();
}
this._displayErrorMessage(error);
}
_done() {
this.input.disabled = false;
}
_messageFromError(error) {
if (
error.xhr &&
error.xhr.status == 422 &&
error.response &&
error.response.errors &&
error.response.errors[0]
) {
return {
title: error.response.errors[0],
description: '',
retry: false
};
} else {
return {
title: 'Une erreur sest produite pendant lenvoi du fichier.',
description: error.message || error.toString(),
retry: true
};
}
}
_displayErrorMessage(error) {
let errorNode = this.input.parentElement.querySelector('.attachment-error');
if (errorNode) {
show(errorNode);
let message = this._messageFromError(error);
errorNode.querySelector('.attachment-error-title').textContent =
message.title || '';
errorNode.querySelector('.attachment-error-description').textContent =
message.description || '';
toggle(errorNode.querySelector('.attachment-error-retry'), message.retry);
}
}
_hideErrorMessage() {
let errorElement = this.input.parentElement.querySelector(
'.attachment-error'
);
if (errorElement) {
hide(errorElement);
}
}
}