Calling support

ts/util/callingTones.ts

@@ -0,0 +1,44 @@
+import { Sound, SoundOpts } from './Sound';
+
+async function playSound(howlProps: SoundOpts): Promise<Sound | undefined> {
+  const canPlayTone = await window.getCallRingtoneNotification();
+
+  if (!canPlayTone) {
+    return;
+  }
+
+  const tone = new Sound(howlProps);
+  await tone.play();
+
+  return tone;
+}
+
+class CallingTones {
+  private ringtone?: Sound;
+
+  async playEndCall() {
+    await playSound({
+      src: 'sounds/navigation-cancel.ogg',
+    });
+  }
+
+  async playRingtone() {
+    if (this.ringtone) {
+      this.stopRingtone();
+    }
+
+    this.ringtone = await playSound({
+      loop: true,
+      src: 'sounds/ringtone_minimal.ogg',
+    });
+  }
+
+  stopRingtone() {
+    if (this.ringtone) {
+      this.ringtone.stop();
+      this.ringtone = undefined;
+    }
+  }
+}
+
+export const callingTones = new CallingTones();