// js/haptics.js
// Capacitor Haptics wrapper with fallback to Web Vibration API

let _Haptics = null;
let _ImpactStyle = null;
let _NotificationStyle = null;

// Single stored promise — subsequent calls reuse the same one
const _ready = import('@capacitor/haptics')
    .then((mod) => {
        _Haptics = mod.Haptics;
        _ImpactStyle = mod.ImpactStyle;
        _NotificationStyle = mod.NotificationStyle;
    })
    .catch(() => {
        // Not in Capacitor or haptics not available — fall back to navigator.vibrate
    });

function vibrateFallback(ms) {
    if (navigator.vibrate) navigator.vibrate(ms);
}

/** Light tap — for toggles, menu opens */
export async function hapticLight() {
    await _ready;
    try {
        if (_Haptics) {
            await _Haptics.impact({ style: _ImpactStyle.Light });
            return;
        }
    } catch {}
    vibrateFallback(30);
}

/** Medium impact — for play/pause, skip */
export async function hapticMedium() {
    await _ready;
    try {
        if (_Haptics) {
            await _Haptics.impact({ style: _ImpactStyle.Medium });
            return;
        }
    } catch {}
    vibrateFallback(50);
}

/** Success notification — for like/unlike, add to queue */
export async function hapticSuccess() {
    await _ready;
    try {
        if (_Haptics) {
            await _Haptics.notification({ type: _NotificationStyle.Success });
            return;
        }
    } catch {}
    vibrateFallback(40);
}

/** Long press — replaces navigator.vibrate(50) for track selection */
export async function hapticLongPress() {
    await _ready;
    try {
        if (_Haptics) {
            await _Haptics.impact({ style: _ImpactStyle.Medium });
            return;
        }
    } catch {}
    vibrateFallback(50);
}