/** The mockup's click feedback: a short rising blip per interaction. */

let context: AudioContext | null = null;

export function playPop(frequency: number): void {
  try {
    context ??= new AudioContext();
    const now = context.currentTime;
    const oscillator = context.createOscillator();
    const gain = context.createGain();
    oscillator.type = "sine";
    oscillator.frequency.setValueAtTime(frequency, now);
    oscillator.frequency.exponentialRampToValueAtTime(frequency * 1.8, now + 0.08);
    gain.gain.setValueAtTime(0.15, now);
    gain.gain.exponentialRampToValueAtTime(0.001, now + 0.15);
    oscillator.connect(gain).connect(context.destination);
    oscillator.start();
    oscillator.stop(now + 0.16);
  } catch {
    // No audio context before the first user gesture, and on some browsers never.
  }
}