feat(notification): add Streamlabs support (#1872)

src/notification/streamlabs.ts

@@ -0,0 +1,42 @@
+import {Link, Store} from '../store/model';
+import {Print, logger} from '../logger';
+import {config} from '../config';
+import {URLSearchParams} from 'url';
+import fetch from 'node-fetch';
+
+const {streamlabs} = config.notifications;
+let requestParams: URLSearchParams;
+
+if (streamlabs.accessToken && streamlabs.type) {
+  requestParams = new URLSearchParams();
+  requestParams.append('access_token', streamlabs.accessToken);
+  requestParams.append('type', streamlabs.type);
+  requestParams.append('image_href', streamlabs.imageHref);
+  requestParams.append('sound_href', streamlabs.soundHref);
+  requestParams.append('duration', streamlabs.duration.toString());
+}
+
+export function sendStreamLabsAlert(link: Link, store: Store) {
+  if (requestParams) {
+    logger.debug('↗ sending StreamLabs alert');
+
+    (async () => {
+      const message = `${Print.inStock(link, store)}`;
+      requestParams.set('message', message);
+
+      try {
+        const response = await fetch('https://streamlabs.com/api/v1.0/alerts', {
+          method: 'POST',
+          body: requestParams,
+        });
+
+        const json = await response.json();
+        if (!json.success) throw Error(JSON.stringify(json));
+
+        logger.info('✔ StreamLabs alert sent');
+      } catch (error: unknown) {
+        logger.error("✖ couldn't send StreamLabs alert", error);
+      }
+    })();
+  }
+}