const searchInput = document.getElementById('search-input');
const searchResults = document.getElementById('search-results');
let searchTimeout;

searchInput.addEventListener('input', (e) => {
    const query = e.target.value;
    clearTimeout(searchTimeout);
    if (query.length < 2) {
        searchResults.classList.remove('active');
        searchResults.innerHTML = '';
        searchInput.style.borderRadius = '99px';
        return;
    }
    searchTimeout = setTimeout(() => {
        fetchSearh(query);
    }, 300);
});

document.addEventListener('click', (e) => {
    if (!e.target.closest('.search-wrapper')) {
        searchResults.classList.remove('active');
        searchInput.style.borderRadius = '99px';
    }
});

async function fetchSearh(query) {
    try {
        const res = await fetch(`/api/search?q=${encodeURIComponent(query.slice(0, 30))}`);
        const data = await res.json();
        renderSearchResults(data.results);
    } catch (err) { console.error("Search Error:", err); }
}

function createSlug(text) {
    if (!text) return '';
    return text
        .toLowerCase()
        .trim()
        .replace(/-/g, '--')
        .replace(/\s+/g, '-')
        .replace(/[^a-z0-9\-]/g, '');
}

function renderSearchResults(results) {
    searchResults.innerHTML = '';
    if (results.length === 0) {
        searchResults.innerHTML = '<div style="padding:1rem; color:#888; text-align:center">No results found</div>';
    } else {
        results.forEach(anime => {
            const title = getTitle(anime);
            const img = anime.coverImage.medium || anime.coverImage.large;
            const rating = anime.averageScore ? `${anime.averageScore}%` : 'N/A';
            const year = anime.seasonYear || '';
            const format = anime.format || 'TV';

            let href;

            if (anime.isExtensionResult) {
                const titleSlug = createSlug(title);
                console.log(title);
                href = `/anime/${anime.extensionName}/${titleSlug}`;
            } else {
                href = `/anime/${anime.id}`;
            }

            const extName = anime.extensionName?.charAt(0).toUpperCase() + anime.extensionName?.slice(1);
            const extPill = anime.isExtensionResult
                ? `<span>• ${extName}</span>`
                : '';

            const item = document.createElement('a');
            item.className = 'search-item';
            item.href = href;
            item.innerHTML = `
                        <img src="${img}" class="search-poster" alt="${title}">
                        <div class="search-info">
                            <div class="search-title">${title}</div>
                            <div class="search-meta">
                                <span class="rating-pill">${rating}</span>
                                <span>• ${year}</span>
                                <span>• ${format}</span>
                                ${extPill}
                            </div>
                        </div>
                    `;
            searchResults.appendChild(item);
        });
    }
    searchResults.classList.add('active');
    searchInput.style.borderRadius = '12px 12px 0 0';
}

function scrollCarousel(id, direction) {
    const container = document.getElementById(id);
    if(container) {
        const scrollAmount = container.clientWidth * 0.75;
        container.scrollBy({ left: direction * scrollAmount, behavior: 'smooth' });
    }
}

let trendingAnimes = [];
let currentHeroIndex = 0;
let player;
let heroInterval;

var tag = document.createElement('script');
tag.src = "https://www.youtube.com/iframe_api";
var firstScriptTag = document.getElementsByTagName('script')[0];
firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);

function onYouTubeIframeAPIReady() {
    player = new YT.Player('player', {
        height: '100%', width: '100%',
        playerVars: { 'autoplay': 1, 'controls': 0, 'mute': 1, 'loop': 1, 'showinfo': 0, 'modestbranding': 1 },
        events: { 'onReady': (e) => { e.target.mute(); if(trendingAnimes.length) updateHeroVideo(trendingAnimes[currentHeroIndex]); } }
    });
}

async function fetchContent(isUpdate = false) {
    try {
        const trendingRes = await fetch('/api/trending');
        const trendingData = await trendingRes.json();

        if (trendingData.results && trendingData.results.length > 0) {
            trendingAnimes = trendingData.results;
            if (!isUpdate) {
                updateHeroUI(trendingAnimes[0]);
                startHeroCycle();
            }
            renderList('trending', trendingAnimes);
        } else if (!isUpdate) {
            setTimeout(() => fetchContent(false), 2000);
        }

        const topRes = await fetch('/api/top-airing');
        const topData = await topRes.json();
        if (topData.results && topData.results.length > 0) {
            renderList('top-airing', topData.results);
        }

    } catch (e) {
        console.error("Fetch Error:", e);
        if(!isUpdate) setTimeout(() => fetchContent(false), 5000);
    }
}

function startHeroCycle() {
    if(heroInterval) clearInterval(heroInterval);
    heroInterval = setInterval(() => {
        if(trendingAnimes.length > 0) {
            currentHeroIndex = (currentHeroIndex + 1) % trendingAnimes.length;
            updateHeroUI(trendingAnimes[currentHeroIndex]);
        }
    }, 10000);
}

function getTitle(anime) {
    return anime.title.english || anime.title.romaji || "Unknown Title";
}

function updateHeroUI(anime) {
    if(!anime) return;
    const title = getTitle(anime);
    const score = anime.averageScore ? anime.averageScore + '% Match' : 'N/A';
    const year = anime.seasonYear || '';
    const type = anime.format || 'TV';
    const desc = anime.description || 'No description available.';
    const poster = anime.coverImage ? anime.coverImage.extraLarge : '';
    const banner = anime.bannerImage || poster;

    document.getElementById('hero-title').innerText = title;
    document.getElementById('hero-desc').innerHTML = desc;
    document.getElementById('hero-score').innerText = score;
    document.getElementById('hero-year').innerText = year;
    document.getElementById('hero-type').innerText = type;
    document.getElementById('hero-poster').src = poster;

    const watchBtn = document.getElementById('watch-btn');
    if(watchBtn) watchBtn.onclick = () => window.location.href = `/anime/${anime.id}`;

    const bgImg = document.getElementById('hero-bg-media');
    if(bgImg && bgImg.src !== banner) bgImg.src = banner;

    updateHeroVideo(anime);

    document.getElementById('hero-loading-ui').style.display = 'none';
    document.getElementById('hero-real-ui').style.display = 'block';
}

function updateHeroVideo(anime) {
    if (!player || !player.loadVideoById) return;
    const videoContainer = document.getElementById('player');
    if (anime.trailer && anime.trailer.site === 'youtube' && anime.trailer.id) {
        if(player.getVideoData && player.getVideoData().video_id !== anime.trailer.id) {
            player.loadVideoById(anime.trailer.id);
            player.mute();
        }
        videoContainer.style.opacity = "1";
    } else {
        videoContainer.style.opacity = "0";
        player.stopVideo();
    }
}

function renderList(id, list) {
    const container = document.getElementById(id);
    const firstId = list.length > 0 ? list[0].id : null;
    const currentFirstId = container.firstElementChild?.dataset?.id;
    if (currentFirstId && parseInt(currentFirstId) === firstId && container.children.length === list.length) {
        return;
    }

    container.innerHTML = '';
    list.forEach(anime => {
        const title = getTitle(anime);
        const cover = anime.coverImage ? anime.coverImage.large : '';
        const ep = anime.nextAiringEpisode ? 'Ep ' + anime.nextAiringEpisode.episode : (anime.episodes ? anime.episodes + ' Eps' : 'TV');
        const score = anime.averageScore || '--';

        const el = document.createElement('div');
        el.className = 'card';
        el.dataset.id = anime.id;
        el.onclick = () => window.location.href = `/anime/${anime.id}`;
        el.innerHTML = `
                    <div class="card-img-wrap"><img src="${cover}" loading="lazy"></div>
                    <div class="card-content">
                        <h3>${title}</h3>
                        <p>${score}% • ${ep}</p>
                    </div>
                `;
        container.appendChild(el);
    });
}

fetchContent();
setInterval(() => fetchContent(true), 60000);