Restructure

web/src/app/Subscription.js

@@ -0,0 +1,30 @@
+import {topicUrl, shortTopicUrl, topicUrlWs} from './utils';
+
+export default class Subscription {
+    id = '';
+    baseUrl = '';
+    topic = '';
+    notifications = [];
+    lastActive = null;
+    constructor(baseUrl, topic) {
+        this.id = topicUrl(baseUrl, topic);
+        this.baseUrl = baseUrl;
+        this.topic = topic;
+    }
+    addNotification(notification) {
+        if (notification.time === null) {
+            return;
+        }
+        this.notifications.push(notification);
+        this.lastActive = notification.time;
+    }
+    url() {
+        return this.id;
+    }
+    wsUrl() {
+        return topicUrlWs(this.baseUrl, this.topic);
+    }
+    shortUrl() {
+        return shortTopicUrl(this.baseUrl, this.topic);
+    }
+}