{% extends "layout.html" %}

{% block content %}
<!-- Filters & Categories -->
<div class="yt-filter-bar">
    <div class="yt-categories" id="categoryList">
        <!-- "All" removed, starting with Tech -->
        <button class="yt-chip" onclick="switchCategory('tech')">Tech</button>
        <button class="yt-chip" onclick="switchCategory('music')">Music</button>
        <button class="yt-chip" onclick="switchCategory('gaming')">Gaming</button>
        <button class="yt-chip" onclick="switchCategory('movies')">Movies</button>
        <button class="yt-chip" onclick="switchCategory('news')">News</button>
        <button class="yt-chip" onclick="switchCategory('trending')">Trending</button>
        <button class="yt-chip" onclick="switchCategory('sports')">Sports</button>
        <button class="yt-chip" onclick="switchCategory('podcasts')">Podcasts</button>
        <button class="yt-chip" onclick="switchCategory('live')">Live</button>
    </div>

    <div class="yt-filter-actions">
        <div class="yt-dropdown">
            <button class="yt-icon-btn" id="filterToggleBtn" onclick="toggleFilterMenu()">
                <i class="fas fa-sliders-h"></i>
            </button>
            <div class="yt-dropdown-menu" id="filterMenu">
                <div class="yt-menu-section">
                    <h4>Sort By</h4>
                    <button onclick="changeSort('day')">Today</button>
                    <button onclick="changeSort('week')">This Week</button>
                    <button onclick="changeSort('month')">This Month</button>
                    <button onclick="changeSort('3months')">Last 3 Months</button>
                    <button onclick="changeSort('year')">This Year</button>
                </div>
                <div class="yt-menu-section">
                    <h4>Region</h4>
                    <button onclick="changeRegion('vietnam')">Vietnam</button>
                    <button onclick="changeRegion('global')">Global</button>
                </div>
            </div>
        </div>
    </div>
</div>


<!-- Shorts Section -->
<div id="shortsSection" class="yt-section">
    <div class="yt-section-header">
        <h2><i class="fas fa-bolt"></i> Shorts</h2>
    </div>
    <div class="yt-shorts-container">
        <button class="yt-shorts-arrow yt-shorts-left" onclick="scrollShorts('left')">
            <i class="fas fa-chevron-left"></i>
        </button>
        <div id="shortsGrid" class="yt-shorts-grid">
            <!-- Shorts loaded via JS -->
        </div>
        <button class="yt-shorts-arrow yt-shorts-right" onclick="scrollShorts('right')">
            <i class="fas fa-chevron-right"></i>
        </button>
    </div>
</div>

<!-- Videos Section -->
<div id="videosSection" class="yt-section">
    <div class="yt-section-header">
        <h2><i class="fas fa-play-circle"></i> Videos</h2>
    </div>
    <div id="resultsArea" class="yt-video-grid">
        <!-- Initial Skeleton State -->
        <!-- Initial Skeleton State (12 items) -->
        <div class="yt-video-card skeleton-card">
            <div class="skeleton-thumb skeleton"></div>
            <div class="skeleton-details">
                <div class="skeleton-avatar skeleton"></div>
                <div class="skeleton-text">
                    <div class="skeleton-title skeleton"></div>
                    <div class="skeleton-meta skeleton"></div>
                </div>
            </div>
        </div>
        <div class="yt-video-card skeleton-card">
            <div class="skeleton-thumb skeleton"></div>
            <div class="skeleton-details">
                <div class="skeleton-avatar skeleton"></div>
                <div class="skeleton-text">
                    <div class="skeleton-title skeleton"></div>
                    <div class="skeleton-meta skeleton"></div>
                </div>
            </div>
        </div>
        <div class="yt-video-card skeleton-card">
            <div class="skeleton-thumb skeleton"></div>
            <div class="skeleton-details">
                <div class="skeleton-avatar skeleton"></div>
                <div class="skeleton-text">
                    <div class="skeleton-title skeleton"></div>
                    <div class="skeleton-meta skeleton"></div>
                </div>
            </div>
        </div>
        <div class="yt-video-card skeleton-card">
            <div class="skeleton-thumb skeleton"></div>
            <div class="skeleton-details">
                <div class="skeleton-avatar skeleton"></div>
                <div class="skeleton-text">
                    <div class="skeleton-title skeleton"></div>
                    <div class="skeleton-meta skeleton"></div>
                </div>
            </div>
        </div>
        <div class="yt-video-card skeleton-card">
            <div class="skeleton-thumb skeleton"></div>
            <div class="skeleton-details">
                <div class="skeleton-avatar skeleton"></div>
                <div class="skeleton-text">
                    <div class="skeleton-title skeleton"></div>
                    <div class="skeleton-meta skeleton"></div>
                </div>
            </div>
        </div>
        <div class="yt-video-card skeleton-card">
            <div class="skeleton-thumb skeleton"></div>
            <div class="skeleton-details">
                <div class="skeleton-avatar skeleton"></div>
                <div class="skeleton-text">
                    <div class="skeleton-title skeleton"></div>
                    <div class="skeleton-meta skeleton"></div>
                </div>
            </div>
        </div>
        <div class="yt-video-card skeleton-card">
            <div class="skeleton-thumb skeleton"></div>
            <div class="skeleton-details">
                <div class="skeleton-avatar skeleton"></div>
                <div class="skeleton-text">
                    <div class="skeleton-title skeleton"></div>
                    <div class="skeleton-meta skeleton"></div>
                </div>
            </div>
        </div>
        <div class="yt-video-card skeleton-card">
            <div class="skeleton-thumb skeleton"></div>
            <div class="skeleton-details">
                <div class="skeleton-avatar skeleton"></div>
                <div class="skeleton-text">
                    <div class="skeleton-title skeleton"></div>
                    <div class="skeleton-meta skeleton"></div>
                </div>
            </div>
        </div>
    </div>
</div>

<style>
    /* Filter Bar Styles */
    .yt-filter-bar {
        display: flex;
        align-items: center;
        gap: 1rem;
        padding: 0 1rem;
        margin-bottom: 1rem;
        position: sticky;
        top: 56px;
        /* Adjust based on header height */
        z-index: 99;
        background: var(--yt-bg-primary);
        border-bottom: 1px solid var(--yt-border);
    }

    .yt-categories {
        display: flex;
        overflow-x: auto;
        gap: 0.8rem;
        padding: 0.5rem 0;
        flex: 1;
        scrollbar-width: none;
        /* Firefox */
    }

    .yt-categories::-webkit-scrollbar {
        display: none;
    }

    .yt-chip {
        padding: 0.5rem 1rem;
        border-radius: 8px;
        background: var(--yt-bg-secondary);
        color: var(--yt-text-primary);
        border: none;
        white-space: nowrap;
        cursor: pointer;
        font-size: 0.9rem;
        transition: background 0.2s;
    }

    .yt-chip:hover {
        background: var(--yt-bg-hover);
    }

    .yt-chip-active {
        background: var(--yt-text-primary);
        color: var(--yt-bg-primary);
    }

    .yt-chip-active:hover {
        background: var(--yt-text-primary);
        opacity: 0.9;
    }

    .yt-filter-actions {
        flex-shrink: 0;
        position: relative;
    }

    .yt-dropdown-menu {
        display: none;
        position: absolute;
        top: 100%;
        right: 0;
        width: 200px;
        background: var(--yt-bg-secondary);
        border-radius: 12px;
        padding: 1rem;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        margin-top: 0.5rem;
        z-index: 100;
        border: 1px solid var(--yt-border);
    }

    .yt-dropdown-menu.show {
        display: block;
    }

    .yt-menu-section {
        margin-bottom: 1rem;
    }

    .yt-menu-section:last-child {
        margin-bottom: 0;
    }

    .yt-menu-section h4 {
        font-size: 0.8rem;
        color: var(--yt-text-secondary);
        margin-bottom: 0.5rem;
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }

    .yt-menu-section button {
        display: block;
        width: 100%;
        text-align: left;
        padding: 0.5rem;
        background: none;
        border: none;
        color: var(--yt-text-primary);
        cursor: pointer;
        border-radius: 6px;
    }

    .yt-menu-section button:hover {
        background: var(--yt-bg-hover);
    }

    /* Shorts Section Styles */
    .yt-section {
        margin-bottom: 32px;
        padding: 0 16px;
    }

    .yt-section-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 16px;
    }

    .yt-section-header h2 {
        font-size: 20px;
        font-weight: 600;
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .yt-section-header h2 i {
        color: var(--yt-accent-red);
    }

    .yt-shorts-container {
        position: relative;
        display: flex;
        align-items: center;
    }

    .yt-shorts-arrow {
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: var(--yt-bg-primary);
        border: 1px solid var(--yt-border);
        color: var(--yt-text-primary);
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        z-index: 10;
        transition: all 0.2s;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    }

    .yt-shorts-arrow:hover {
        background: var(--yt-bg-secondary);
        transform: translateY(-50%) scale(1.1);
    }

    .yt-shorts-left {
        left: -20px;
    }

    .yt-shorts-right {
        right: -20px;
    }

    .yt-shorts-grid {
        display: flex;
        gap: 12px;
        overflow-x: auto;
        padding: 8px 0;
        scroll-behavior: smooth;
        scrollbar-width: none;
        flex: 1;
    }

    .yt-shorts-grid::-webkit-scrollbar {
        display: none;
    }

    .yt-short-card {
        flex-shrink: 0;
        width: 180px;
        cursor: pointer;
        transition: transform 0.2s;
    }

    .yt-short-card:hover {
        transform: scale(1.02);
    }

    .yt-short-thumb {
        width: 180px;
        height: 320px;
        border-radius: 12px;
        object-fit: cover;
        background: var(--yt-bg-secondary);
    }

    .yt-short-title {
        font-size: 14px;
        font-weight: 500;
        margin-top: 8px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .yt-short-views {
        font-size: 12px;
        color: var(--yt-text-secondary);
        margin-top: 4px;
    }

    @media (max-width: 768px) {
        .yt-shorts-arrow {
            display: none;
        }

        .yt-filter-bar {
            padding: 0 10px;
            top: 56px;
        }

        .yt-sort-container {
            /* Legacy override if needed */
        }
    }
</style>

<script>
    // Global filter state
    let currentSort = 'month';
    let currentRegion = 'vietnam';

    function toggleFilterMenu() {
        document.getElementById('filterMenu').classList.toggle('show');
    }

    // Close menu when clicking outside
    document.addEventListener('click', function (e) {
        const menu = document.getElementById('filterMenu');
        const btn = document.getElementById('filterToggleBtn');
        if (menu && btn && !menu.contains(e.target) && !btn.contains(e.target)) {
            menu.classList.remove('show');
        }
    });

    function changeSort(sort) {
        window.currentSort = sort;
        // Global loadTrending from main.js will use this
        loadTrending(true);
        loadShorts(); // Also reload shorts with new sort
        toggleFilterMenu();
    }

    function changeRegion(region) {
        window.currentRegion = region;
        loadTrending(true);
        loadShorts(); // Also reload shorts with new region
        toggleFilterMenu();
    }

    // Scroll shorts logic
    function scrollShorts(direction) {
        const grid = document.getElementById('shortsGrid');
        const scrollAmount = 400;

        if (direction === 'left') {
            grid.scrollBy({ left: -scrollAmount, behavior: 'smooth' });
        } else {
            grid.scrollBy({ left: scrollAmount, behavior: 'smooth' });
        }
    }

    // Load Shorts Logic
    // Load Shorts Logic
    async function loadShorts() {
        const shortsGrid = document.getElementById('shortsGrid');

        // Skeleton loader
        shortsGrid.innerHTML = Array(10).fill(0).map(() => `
            <div class="skeleton-short"></div>
        `).join('');

        try {
            const page = 1;
            const category = window.currentCategory || 'general';
            const shortsCategory = category === 'all' || category === 'general' ? 'shorts' : category;

            const response = await fetch(`/api/trending?category=${shortsCategory}&page=${page}&sort=${window.currentSort}&region=${window.currentRegion}&shorts=1`);
            const data = await response.json();

            shortsGrid.innerHTML = '';
            if (data && data.length > 0) {
                // Show up to 20 shorts
                data.slice(0, 20).forEach(video => {
                    const card = document.createElement('div');
                    card.className = 'yt-short-card';
                    card.innerHTML = `
                    <img src="${video.thumbnail}" class="yt-short-thumb" loading="lazy">
                    <p class="yt-short-title">${escapeHtml(video.title)}</p>
                    <p class="yt-short-views">${formatViews(video.view_count)} views</p>
                `;
                    card.onclick = () => window.location.href = `/watch?v=${video.id}`;
                    shortsGrid.appendChild(card);
                });
            } else {
                shortsGrid.innerHTML = '<p style="color:var(--yt-text-secondary);padding:20px;">No shorts found</p>';
            }
        } catch (e) {
            console.error('Error loading shorts:', e);
            shortsGrid.innerHTML = '<p style="color:var(--yt-text-secondary);padding:20px;">Could not load shorts</p>';
        }
    }

    // Helpers (if main.js not loaded yet or for standalone usage)
    function escapeHtml(text) {
        if (!text) return '';
        const div = document.createElement('div');
        div.textContent = text;
        return div.innerHTML;
    }

    function formatViews(views) {
        if (!views) return '0';
        const num = parseInt(views);
        if (num >= 1000000) return (num / 1000000).toFixed(1) + 'M';
        if (num >= 1000) return (num / 1000).toFixed(0) + 'K';
        return num.toLocaleString();
    }

    // Init Logic
    document.addEventListener('DOMContentLoaded', () => {
        loadShorts();
        // Pagination logic removed for infinite scroll

        // Check URL params for category
        const urlParams = new URLSearchParams(window.location.search);
        const category = urlParams.get('category');
        if (category && typeof switchCategory === 'function') {
            // Let main.js handle the switch, but we can set UI active state if needed
            // switchCategory is in main.js
            switchCategory(category);
        }
    });
</script>
{% endblock %}