/**
 * [Gitea #125] Tiny vibration ticks for touch feedback. Android Chrome/PWA
 * only — iOS has no web vibration API — and nothing at all when the user
 * prefers reduced motion. Every call is a cheap no-op elsewhere.
 */
export type HapticKind = 'ptt-on' | 'ptt-off' | 'reaction';

const PATTERN: Record<HapticKind, number> = { 'ptt-on': 10, 'ptt-off': 10, reaction: 8 };

export const hapticsSupported = (): boolean =>
  typeof navigator !== 'undefined' && typeof navigator.vibrate === 'function';

const reducedMotion = (): boolean =>
  typeof window !== 'undefined' &&
  typeof window.matchMedia === 'function' &&
  window.matchMedia('(prefers-reduced-motion: reduce)').matches;

/** Fire a tick; returns whether one was requested. */
export function tick(kind: HapticKind, enabled = true): boolean {
  if (!enabled || !hapticsSupported() || reducedMotion()) return false;
  try {
    return navigator.vibrate(PATTERN[kind]) === true;
  } catch {
    return false;
  }
}