Completed notification functionality

Minor code cleanup

src/app/components/notifications-list/notifications-list.component.ts

@@ -0,0 +1,52 @@
+import { Component, EventEmitter, Input, Output } from '@angular/core';
+import { Notification } from 'api-types';
+import { NotificationAction } from 'api-types/models/NotificationAction';
+import { NotificationType } from 'api-types/models/NotificationType';
+
+@Component({
+  selector: 'app-notifications-list',
+  templateUrl: './notifications-list.component.html',
+  styleUrls: ['./notifications-list.component.scss']
+})
+export class NotificationsListComponent {
+  @Input() notifications = null;
+  @Output() deleteNotification = new EventEmitter<string>();
+  @Output() notificationAction = new EventEmitter<{notification: Notification, action: NotificationAction}>();
+
+  NOTIFICATION_PREFIX: { [key in NotificationType]: string } = {
+    download_complete: $localize`Finished downloading:`,
+    download_error: $localize`Download failed:`
+  }
+
+  // Attaches string to the end of the notification text
+  NOTIFICATION_SUFFIX_KEY: { [key in NotificationType]: string } = {
+    download_complete: 'file_title',
+    download_error: 'file_url'
+  }
+
+  NOTIFICATION_ACTION_TO_STRING: { [key in NotificationAction]: string } = {
+    play: $localize`Play`,
+    retry_download: $localize`Retry download`,
+    view_download_error: $localize`View error`
+  }
+
+  NOTIFICATION_COLOR: { [key in NotificationAction]: string } = {
+    play: 'primary',
+    retry_download: 'primary',
+    view_download_error: 'warn'
+  }
+
+  NOTIFICATION_ICON: { [key in NotificationAction]: string } = {
+    play: 'smart_display',
+    retry_download: 'restart_alt',
+    view_download_error: 'warning'
+  }
+
+  emitNotificationAction(notification: Notification, action: NotificationAction): void {
+    this.notificationAction.emit({notification: notification, action: action});
+  }
+
+  emitDeleteNotification(uid: string): void {
+    this.deleteNotification.emit(uid);
+  }
+}