/**
 * Mobile-specific player features:
 * - Double-tap left/right to skip ±10s
 * - Object-fit toggle button for widescreen fill
 */

export function isMobile() {
    return /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent);
}

export function initMobileWidescreen(playerWrapper, video) {
    if (!isMobile()) {
        return;
    }

    const controls = playerWrapper.querySelector('.hstream-player__controls');
    if (!controls) {
        return;
    }

    const btn = document.createElement('button');
    btn.className = 'hstream-player__button hstream-player__mobile-fill-btn';
    btn.type = 'button';
    btn.setAttribute('aria-label', 'Toggle screen fill');
    btn.innerHTML = '<i class="fa-solid fa-arrows-left-right-to-line"></i>';
    btn.title = 'Fill Screen';

    const fullscreenBtn = controls.querySelector('[data-action="fullscreen"]');
    if (fullscreenBtn) {
        fullscreenBtn.insertAdjacentElement('beforebegin', btn);
    } else {
        controls.appendChild(btn);
    }

    let fillEnabled = true;
    video.style.objectFit = 'cover';

    btn.addEventListener('click', (e) => {
        e.stopPropagation();
        if (fillEnabled) {
            video.style.objectFit = 'contain';
            fillEnabled = false;
            btn.classList.remove('hstream-player__button--active');
        } else {
            video.style.objectFit = 'cover';
            fillEnabled = true;
            btn.classList.add('hstream-player__button--active');
        }
    });

    btn.classList.add('hstream-player__button--active');
}

export function initMobileDoubleTap(playerWrapper, video, player) {
    if (!isMobile()) {
        return;
    }

    const skipOverlay = playerWrapper.querySelector('.hstream-player__skip-overlay');
    if (!skipOverlay) {
        return;
    }

    class MultiClickCounter {
        constructor() {
            this.timers = [];
            this.count = 0;
            this.reseted = 0;
            this.lastSide = null;
        }

        clicked() {
            this.count += 1;
            const xcount = this.count;
            this.timers.push(setTimeout(() => this.reset(xcount), 500));
            return this.count;
        }

        resetCount(n) {
            this.reseted = this.count;
            this.count = n;
            this.timers.forEach(t => clearTimeout(t));
            this.timers = [];
        }

        reset(xcount) {
            if (this.count > xcount) return;
            this.count = 0;
            this.lastSide = null;
            this.reseted = 0;
            skipOverlay.classList.remove('hstream-player__skip-overlay--visible');
            this.timers = [];
        }
    }

    const counter = new MultiClickCounter();

    const handleTap = (e) => {
        e.preventDefault();

        const count = counter.clicked();
        if (count < 2) return;

        const rect = e.target.getBoundingClientRect();
        const x = (e.touches ? e.touches[0].clientX : e.clientX) - rect.left;
        const perc = (x / rect.width) * 100;

        let shouldReset = true;
        const lastSide = counter.lastSide;

        if (lastSide === null) {
            shouldReset = false;
        }

        if (perc < 40) {
            if (player.currentTime === 0) return;
            counter.lastSide = 'L';
            if (shouldReset && lastSide !== 'L') {
                counter.resetCount(1);
                return;
            }
            const skipSeconds = (count - 1) * 10;
            player.currentTime = Math.max(0, player.currentTime - skipSeconds);
            skipOverlay.innerHTML = '<i class="fa-solid fa-backward"></i>' + skipSeconds + 's';
            skipOverlay.classList.add('hstream-player__skip-overlay--visible');
            setTimeout(() => skipOverlay.classList.remove('hstream-player__skip-overlay--visible'), 800);
        } else if (perc > 60) {
            if (player.currentTime >= player.duration) return;
            counter.lastSide = 'R';
            if (shouldReset && lastSide !== 'R') {
                counter.resetCount(1);
                return;
            }
            const skipSeconds = (count - 1) * 10;
            player.currentTime = Math.min(player.duration, player.currentTime + skipSeconds);
            skipOverlay.innerHTML = '<i class="fa-solid fa-forward"></i>' + skipSeconds + 's';
            skipOverlay.classList.add('hstream-player__skip-overlay--visible');
            setTimeout(() => skipOverlay.classList.remove('hstream-player__skip-overlay--visible'), 800);
        } else {
            player.togglePlay();
            counter.lastSide = 'C';
        }
    };

    playerWrapper.addEventListener('click', handleTap);

    video.addEventListener('dblclick', (e) => {
        e.preventDefault();
        e.stopPropagation();
    });
}