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turbo_stream_controller.ts
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turbo_stream_controller.ts
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/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
import { Controller } from '@hotwired/stimulus';
import { connectStreamSource, disconnectStreamSource } from '@hotwired/turbo';
/**
* @author Kévin Dunglas <kevin@dunglas.fr>
*/
export default class extends Controller {
static values = {
topic: String,
hub: String,
};
es;
initialize() {
const errorMessages = [];
if (!this.hasHubValue) errorMessages.push(`A "hub" value pointing to the Mercure hub must be provided.`);
if (!this.hasTopicValue) errorMessages.push(`A "topic" value must be provided.`);
if (errorMessages.length) throw new Error(errorMessages.join(' '));
const u = new URL(this.hubValue);
u.searchParams.append('topic', this.topicValue);
this.url = u.toString();
}
connect() {
this.es = new EventSource(this.url);
connectStreamSource(this.es);
}
disconnect() {
this.es.close();
disconnectStreamSource(this.es);
}
}