// 全局变量
let videos = [
  {
    "id": 1,
    "title": "透明なパレット (self cover)",
    "channel": "Aqu3ra",
    "views": "576,197",
    "uploadDate": "1 months ago",
    "duration": "3:03",
    "thumbnail": "img/cover/music-01.jpg",
    "category": "music",
    "type": "video"
  },
  {
    "id": 2,
    "title": "【歌ってみた】Duvet / covered by ヰ世界情緒",
    "channel": "ヰ世界情緒 -Isekaijoucho-",
    "views": "721,627",
    "uploadDate": "5 days ago",
    "duration": "3:32",
    "thumbnail": "img/cover/music-02.jpg",
    "category": "music",
    "type": "video"
  },
  {
    "id": 3,
    "title": "ヨルシカ　『 晴る 』　－文化祭2025－",
    "channel": "countben",
    "views": "142,561",
    "uploadDate": "2 months ago",
    "duration": "4:46",
    "thumbnail": "img/cover/music-03.jpg",
    "category": "music",
    "type": "video"
  },
  {
    "id": 4,
    "title": "【Silent Witch沈默魔女的秘密】OST 主題曲「沈黙の魔女」bgm｜Kitkit Lu COVER",
    "channel": "KitKit Lu",
    "views": "1,856,264",
    "uploadDate": "5 months ago",
    "duration": "2:39",
    "thumbnail": "img/cover/music-04.jpg",
    "category": "music",
    "type": "video"
  },
  {
    "id": 5,
    "title": "I Can't Wait feat. GUMI",
    "channel": "d0tc0mmie",
    "views": "315,293",
    "uploadDate": "1 month ago",
    "duration": "1:35",
    "thumbnail": "img/cover/music-05.jpg",
    "category": "music",
    "type": "video"
  },
  {
    "id": 6,
    "title": "MiSiDE: ZERO Update – Full Gameplay + Ending (Showcase)",
    "channel": "RUSH PLAY",
    "views": "900,156",
    "uploadDate": "4 weeks ago",
    "duration": "24:39",
    "thumbnail": "img/cover/game-06.jpg",
    "category": "game",
    "type": "video"
  },
  {
    "id": 7,
    "title": "Minecraftの効果音でサイエンス",
    "channel": "gmailアカウント",
    "views": "651,192",
    "uploadDate": "11 months ago",
    "duration": "1:05",
    "thumbnail": "img/cover/game-07.jpg",
    "category": "game",
    "type": "video"
  },
  {
    "id": 8,
    "title": "osu! NEEDS to Take Notes... (00PARTS World's 1st Clear)",
    "channel": "bmc",
    "views": "892,163",
    "uploadDate": "1 month ago",
    "duration": "8:21",
    "thumbnail": "img/cover/game-08.jpg",
    "category": "game",
    "type": "video"
  },
  {
    "id": 9,
    "title": "ヨルシカ - 春泥棒（OFFICIAL VIDEO）",
    "channel": "ヨルシカ / n-buna Official",
    "views": "123,456,789",
    "uploadDate": "5 years ago",
    "duration": "4:17",
    "thumbnail": "img/cover/music-09.jpg",
    "category": "music",
    "type": "video"
  },
  {
    "id": 10,
    "title": "YOASOBI「アイドル」Official Music Video",
    "channel": "YOASOBI Official",
    "views": "456,789,123",
    "uploadDate": "2 years ago",
    "duration": "3:33",
    "thumbnail": "img/cover/music-10.jpg",
    "category": "music",
    "type": "video"
  },
  {
    "id": 11,
    "title": "花譜 - 不可解",
    "channel": "花譜 -KAF-",
    "views": "12,345,678",
    "uploadDate": "3 years ago",
    "duration": "4:05",
    "thumbnail": "img/cover/music-11.jpg",
    "category": "music",
    "type": "video"
  },
  {
    "id": 12,
    "title": "ZUTOMAYO - STUDY ME",
    "channel": "ZUTOMAYO",
    "views": "23,456,789",
    "uploadDate": "1 year ago",
    "duration": "3:45",
    "thumbnail": "img/cover/music-12.jpg",
    "category": "music",
    "type": "video"
  },
  {
    "id": 13,
    "title": "Eve - 廻廻奇譚",
    "channel": "Eve",
    "views": "89,123,456",
    "uploadDate": "4 years ago",
    "duration": "3:55",
    "thumbnail": "img/cover/music-13.jpg",
    "category": "music",
    "type": "video"
  },
  {
    "id": 14,
    "title": "ClariS - コネクト",
    "channel": "ClariS Official",
    "views": "45,678,901",
    "uploadDate": "10 years ago",
    "duration": "4:30",
    "thumbnail": "img/cover/music-14.jpg",
    "category": "music",
    "type": "video"
  },
  {
    "id": 15,
    "title": "米津玄師  Kenshi Yonezu  - Lemon",
    "channel": "Kenshi Yonezu  米津玄師",
    "views": "96,539,145",
    "uploadDate": "7 years ago",
    "duration": "4:35",
    "thumbnail": "img/cover/music-15.jpg",
    "category": "music",
    "type": "video"
  },
  {
    "id": 16,
    "title": "【初音ミク】 夜明けと蛍 【オリジナル】",
    "channel": "ヨルシカ / n-buna Official",
    "views": "27,749,534",
    "uploadDate": "8 years ago",
    "duration": "5:10",
    "thumbnail": "img/cover/music-16.jpg",
    "category": "music",
    "type": "video"
  },
  {
    "id": 17,
    "title": "Empty old City - Buffer",
    "channel": "Empty old city",
    "views": "838,946",
    "uploadDate": "1 year ago",
    "duration": "3:18",
    "thumbnail": "img/cover/music-17.jpg",
    "category": "music",
    "type": "video"
  },
  {
    "id": 18,
    "title": "I built Git for Minecraft for a hackathon and won",
    "channel": "MathRayyan",
    "views": "288,346",
    "uploadDate": "12 days ago",
    "duration": "5:13",
    "thumbnail": "img/cover/game-18.jpg",
    "category": "game",
    "type": "video"
  },
  {
    "id": 19,
    "title": "怎麼讓遊戲越來越真？PBR貼圖是怎麼做到的？",
    "channel": "孫拓海Taku",
    "views": "25,364",
    "uploadDate": "3 weeks ago",
    "duration": "13:14",
    "thumbnail": "img/cover/game-19.jpg",
    "category": "game",
    "type": "video"
  },
  {
    "id": 20,
    "title": "「空あくあ!」當さくな說出這句台詞時 全場都淚崩了....【結城さくな】【Vtuber中文/翻譯/精華】",
    "channel": "Dar烤肉!",
    "views": "116,498",
    "uploadDate": "7 days ago",
    "duration": "8:35",
    "thumbnail": "img/cover/game-20.jpg",
    "category": "game",
    "type": "video"
  },
  {
    "id": 21,
    "title": "「明日方舟：终末地性能分析：二游画质巅峰？榨干手机！",
    "channel": "极客湾Geekerwan",
    "views": "51,649",
    "uploadDate": "10 days ago",
    "duration": "22:13",
    "thumbnail": "img/cover/tech-21.jpg",
    "category": "tech",
    "type": "video"
  },
  {
    "id": 22,
    "title": "What GPU is the BEST for Linux Gaming?",
    "channel": "Linus Tech Tips",
    "views": "96,751",
    "uploadDate": "7 days ago",
    "duration": "10:55",
    "thumbnail": "img/cover/tech-22.jpg",
    "category": "tech",
    "type": "video"
  },
  {
    "id": 23,
    "title": "How Hard Is It to Build Your First PC?",
    "channel": "PLACITECH",
    "views": "4,351",
    "uploadDate": "2 months ago",
    "duration": "12:47",
    "thumbnail": "img/cover/tech-23.jpg",
    "category": "tech",
    "type": "video"
  },
  {
    "id": 24,
    "title": "回顾我们最中意的 2025 年产品发布 - 谷歌开发者新闻（年终特辑）",
    "channel": "Google for Developers",
    "views": "3,475",
    "uploadDate": "1 month ago",
    "duration": "6:39",
    "thumbnail": "img/cover/tech-24.jpg",
    "category": "tech",
    "type": "video"
  },
  {
    "id": 25,
    "title": "Commodore 128 Alternate Universe",
    "channel": "The 8-Bit Guy",
    "views": "17,498",
    "uploadDate": "4 months ago",
    "duration": "8:35",
    "thumbnail": "img/cover/tech-25.jpg",
    "category": "tech",
    "type": "video"
  },
  {
    "id": 25,
    "title": "Commodore 128 Alternate Universe",
    "channel": "The 8-Bit Guy",
    "views": "17,498",
    "uploadDate": "4 months ago",
    "duration": "8:35",
    "thumbnail": "img/cover/tech-25.jpg",
    "category": "tech",
    "type": "video"
  },
  {
    "id": 25,
    "title": "Commodore 128 Alternate Universe",
    "channel": "The 8-Bit Guy",
    "views": "17,498",
    "uploadDate": "4 months ago",
    "duration": "8:35",
    "thumbnail": "img/cover/tech-25.jpg",
    "category": "tech",
    "type": "video"
  },
  {
    "id": 26,
    "title": "\"The Roller Coaster\" - Behind the Scenes - Time Lapse & Commentary",
    "channel": "AlanBeckerTutorials",
    "views": "193,762",
    "uploadDate": "7 years ago",
    "duration": "14:52",
    "thumbnail": "img/cover/art-26.jpg",
    "category": "art",
    "type": "video"
  },
  {
    "id": 27,
    "title": "Animation vs. Game Design",
    "channel": "Alan Backer",
    "views": "694,264",
    "uploadDate": "2 months ago",
    "duration": "3:12",
    "thumbnail": "img/cover/art-27.jpg",
    "category": "art",
    "type": "video"
  },
  {
    "id": 28,
    "title": "The Far Lands - Animation vs. Minecraft Shorts Ep 38",
    "channel": "Alan Backer",
    "views": "975,192",
    "uploadDate": "1 month ago",
    "duration": "9:10",
    "thumbnail": "img/cover/art-28.jpg",
    "category": "art",
    "type": "video"
  },
  {
    "id": 29,
    "title": "【Official MV】ray 超かぐや姫！Version／かぐや (cv.夏吉ゆうこ) ＆ 月見ヤチヨ (cv.早見沙織) from #超かぐや姫 ！【新作アニメーション】",
    "channel": "",
    "views": "78,192",
    "uploadDate": "5 days ago",
    "duration": "",
    "thumbnail": "img/cover/music-29.jpg",
    "category": "music",
    "type": "short"
  },
  {
    "id": 30,
    "title": "ドッペルゲンガー feat.初音ミク#vocaloid #初音ミク",
    "channel": "",
    "views": "2,359",
    "uploadDate": "3 days ago",
    "duration": "",
    "thumbnail": "img/cover/music-30.jpg",
    "category": "music",
    "type": "short"
  },
  {
    "id": 31,
    "title": "Melt CPK! Remix — English Subtitled Version",
    "channel": "",
    "views": "2,264",
    "uploadDate": "3 days ago",
    "duration": "",
    "thumbnail": "img/cover/music-31.jpg",
    "category": "music",
    "type": "short"
  },
  {
    "id": 32,
    "title": "【Suite History】花譜×#KTちゃん「ギミギミ逃避行feat. #KTちゃん(Prod. peko)」 #花譜 #KTちゃん #組曲 #shorts",
    "channel": "",
    "views": "5,430",
    "uploadDate": "2 days ago",
    "duration": "",
    "thumbnail": "img/cover/music-32.jpg",
    "category": "music",
    "type": "short"
  },
  {
    "id": 33,
    "title": "ヨルシカ - プレイシック　#ヨルシカ #プレイシック #二人称  #yorushika #playsick #secondperson",
    "channel": "",
    "views": "39,254",
    "uploadDate": "10 days ago",
    "duration": "",
    "thumbnail": "img/cover/music-33.jpg",
    "category": "music",
    "type": "short"
  },
  {
    "id": 34,
    "title": "#ヨルシカ #live #前世 #yorushika",
    "channel": "",
    "views": "36,181",
    "uploadDate": "1 month ago",
    "duration": "",
    "thumbnail": "img/cover/music-34.jpg",
    "category": "music",
    "type": "short"
  },
  {
    "id": 35,
    "title": "【歌ってみた】蜜月アン・ドゥ・トロワ covered by ヰ世界情緒 #shorts",
    "channel": "",
    "views": "2,163",
    "uploadDate": "6 days ago",
    "duration": "",
    "thumbnail": "img/cover/music-35.jpg",
    "category": "music",
    "type": "short"
  },
  {
    "id": 36,
    "title": "Thank you 2025🩵Have a wonderful new year! #YOASOBI_2025",
    "channel": "",
    "views": "36,165",
    "uploadDate": "20 days ago",
    "duration": "",
    "thumbnail": "img/cover/music-36.jpg",
    "category": "music",
    "type": "short"
  },
  {
    "id": 37,
    "title": "初めてラブソングを書きました。新曲「ハートマーク feat.川谷絵音」#礼衣 #ハートマーク",
    "channel": "",
    "views": "2,609",
    "uploadDate": "3 days ago",
    "duration": "",
    "thumbnail": "img/cover/music-37.jpg",
    "category": "music",
    "type": "short"
  },
  {
    "id": 38,
    "title": "Would you play this at the school talent show for $500? #osu #osugame",
    "channel": "",
    "views": "133,658",
    "uploadDate": "2 months ago",
    "duration": "",
    "thumbnail": "img/cover/game-38.jpg",
    "category": "game",
    "type": "short"
  },
  {
    "id": 39,
    "title": "May your holidays be filled with great vibes, full combos, and lots of epic tracks! 🎵",
    "channel": "",
    "views": "1,658",
    "uploadDate": "1 months ago",
    "duration": "",
    "thumbnail": "img/cover/game-39.jpg",
    "category": "game",
    "type": "short"
  },
  {
    "id": 40,
    "title": "PANDORA PARADOXXX RE:MASTER alternative spin method #maimai #maimaiでらっくす #maimai_dx",
    "channel": "",
    "views": "25,365",
    "uploadDate": "12 days ago",
    "duration": "",
    "thumbnail": "img/cover/game-40.jpg",
    "category": "game",
    "type": "short"
  },
  {
    "id": 41,
    "title": "Arch Linux VS Debian in 1 Min #linux #arch #debian",
    "channel": "",
    "views": "3,565",
    "uploadDate": "11 days ago",
    "duration": "",
    "thumbnail": "img/cover/tech-41.jpg",
    "category": "tech",
    "type": "short"
  },
  {
    "id": 42,
    "title": "#linux #homelab #opensource #tech #debian",
    "channel": "",
    "views": "7,925",
    "uploadDate": "10 days ago",
    "duration": "",
    "thumbnail": "img/cover/tech-42.jpg",
    "category": "tech",
    "type": "short"
  },
  {
    "id": 43,
    "title": "The one key keyboard #tech",
    "channel": "",
    "views": "4,571",
    "uploadDate": "1 month ago",
    "duration": "",
    "thumbnail": "img/cover/tech-43.jpg",
    "category": "tech",
    "type": "short"
  },
];
let currentCategory = 'All';

// DOM 元素
const searchInput = document.querySelector('.search-input');
const searchBtn = document.querySelector('.search-btn');
const searchResults = document.querySelector('.search-results');
const searchResultsContent = document.querySelector('.search-results-content');
const videoGrid = document.querySelector('.video-grid');
const shortsGrid = document.querySelector('.shorts-grid');
const categoryBtns = document.querySelectorAll('.category-btn');
const subscriptionsList = document.querySelector('.subscriptions-list');

async function init() {
    await loadVideos();
    renderVideos();
    renderSubscriptions();
    bindEvents();
}

async function loadVideos() {
    return Promise.resolve(); // Already defined in global scope
}

function renderVideos() {
    const filteredVideos = filterVideosByCategory(currentCategory);
    const videosOnly = filteredVideos.filter(video => video.type === 'video');
    const shortsOnly = filteredVideos.filter(video => video.type === 'short');
    
    videoGrid.innerHTML = '';
    shortsGrid.innerHTML = '';
    
    // 渲染长视频
    videosOnly.forEach(video => {
        const videoCard = createVideoCard(video);
        videoGrid.appendChild(videoCard);
    });
    
    // 渲染短视频
    shortsOnly.forEach(video => {
        const shortsCard = createShortsCard(video);
        shortsGrid.appendChild(shortsCard);
    });
}

function filterVideosByCategory(category) {
    if (category === 'All') {
        return videos;
    }
    
    const categoryMap = {
        'Music': ['music'],
        'Game': ['game'],
        'Technology': ['tech'],
        'Art': ['art'],
        'Recently': videos.filter(v => v.uploadDate.includes('days ago')),
        'Watched': []
    };
    
    if (categoryMap[category]) {
        if (Array.isArray(categoryMap[category]) && categoryMap[category].length > 0 && typeof categoryMap[category][0] === 'string') {
            return videos.filter(v => categoryMap[category].includes(v.category));
        } else if (Array.isArray(categoryMap[category])) {
            return categoryMap[category];
        }
    }
    
    return videos;
}

function createVideoCard(video) {
    const card = document.createElement('div');
    card.className = 'video-card';
    
    card.innerHTML = `
        <div class="video-thumbnail">
            <img src="${video.thumbnail}" alt="${video.title}">
            <span class="video-duration">${video.duration}</span>
        </div>
        <div class="video-info">
            <div class="video-channel-avatar">
                <i class="fas fa-user"></i>
            </div>
            <div class="video-details">
                <h3 class="video-title">${video.title}</h3>
                <div class="video-meta">
                    <div class="video-channel">${video.channel}</div>
                    <div class="video-stats">
                        <span>${video.views} views</span>
                        <span>${video.uploadDate}</span>
                    </div>
                </div>
            </div>
            <div class="video-menu">
                <button class="menu-toggle">
                    <i class="fas fa-ellipsis-v"></i>
                </button>
                <div class="menu-dropdown">
                    <div class="menu-item">
                        <i class="fas fa-plus"></i>
                        <span>Add to Watch Later</span>
                    </div>
                    <div class="menu-item">
                        <i class="fas fa-clock"></i>
                        <span>Save to "Watch Later"</span>  
                    </div>
                    <div class="menu-item">
                        <i class="fas fa-list"></i>
                        <span>Save to Playlist</span>
                    </div>
                    <div class="menu-item">
                        <i class="fas fa-download"></i>
                        <span>Download</span>
                    </div>
                    <div class="menu-item">
                        <i class="fas fa-share"></i>
                        <span>Share</span>
                    </div>
                    <div class="menu-item">
                        <i class="fas fa-thumbs-down"></i>
                        <span>Not Interested</span>
                    </div>
                    <div class="menu-item">
                        <i class="fas fa-ban"></i>
                        <span>Report Channel</span>
                    </div>
                    <div class="menu-item">
                        <i class="fas fa-flag"></i>
                        <span>Report Video</span>
                    </div>
                </div>
            </div>
        </div>
    `;
    
    const menuToggle = card.querySelector('.menu-toggle');
    const menuDropdown = card.querySelector('.menu-dropdown');
    
    menuToggle.addEventListener('click', (e) => {
        e.stopPropagation();
        menuDropdown.classList.toggle('show');
    });
    
    document.addEventListener('click', () => { // Close the menu when clicking outside
        menuDropdown.classList.remove('show');
    });
    
    return card;
}

function createShortsCard(video) {
    const card = document.createElement('div');
    card.className = 'shorts-card';
    
    card.innerHTML = `
        <div class="shorts-thumbnail">
            <img src="${video.thumbnail}" alt="${video.title}">
        </div>
        <div class="shorts-info">
            <h3 class="shorts-title">${video.title}</h3>
            <div class="shorts-stats">
                <span><i class="fas fa-eye"></i>${video.views}</span>
                <span><i class="fas fa-clock"></i>${video.uploadDate}</span>
            </div>
        </div>
    `;
    
    return card;
}

function renderSubscriptions() { // Render the subscriptions list
    const subscriptions = [
        { name: '花譜 -KAF-', avatar: 'img/avatar/kaf.png' },
        { name: 'ryo (supercell)', avatar: 'img/avatar/ryo.jpg' },
        { name: 'ヰ世界情緒', avatar: 'img/avatar/isekaijoucho.jpg' },
        { name: 'MyGo!!!!!', avatar: 'img/avatar/mygo.png' },
        { name: 'ZUTOMAYO', avatar: 'img/avatar/ztmy.jpg' },
        { name: 'Aqu3ra', avatar: 'img/avatar/aqu3ra.png' },
        { name: '『超かぐや姫 ! 』公式', avatar: 'img/avatar/cpk.png' },
        { name: '礼衣 / Rei', avatar: 'img/avatar/rei.jpg' },
        { name: 'tayori', avatar: 'img/avatar/tayori.jpg' }
    ];
    
    subscriptionsList.innerHTML = '';
    
    subscriptions.forEach(sub => {
        const item = document.createElement('div');
        item.className = 'subscription-item';
        
        item.innerHTML = `
            <div class="subscription-avatar">
                <img src="${sub.avatar}" alt="${sub.name}">
            </div>
            <div class="subscription-name">${sub.name}</div>
        `;
        
        subscriptionsList.appendChild(item);
    });
}
function performSearch(query) { // Perform the search and render the results
    if (!query.trim()) {
        searchResults.style.display = 'none';
        return;
    }
    
    const results = videos.filter(video => 
        video.title.toLowerCase().includes(query.toLowerCase()) ||
        video.channel.toLowerCase().includes(query.toLowerCase())
    );
    
    renderSearchResults(results, query);
}

// Render the search results
function renderSearchResults(results, query) {
    searchResultsContent.innerHTML = '';
    
    if (results.length === 0) {
        searchResultsContent.innerHTML = '<p>No videos found related to your search.</p>';
        searchResults.style.display = 'block';
        return;
    }
    
    results.forEach(video => {
        const item = document.createElement('div');
        item.className = 'search-result-item';
        
        // Highlight the search keywords in the title and channel name
        const highlightedTitle = video.title.replace(new RegExp(`(${query})`, 'gi'), '<span class="highlight">$1</span>');
        const highlightedChannel = video.channel.replace(new RegExp(`(${query})`, 'gi'), '<span class="highlight">$1</span>');
        
        item.innerHTML = `
            <div class="search-result-thumbnail">
                <img src="${video.thumbnail}" alt="${video.title}">
            </div>
            <div class="search-result-details">
                <h4 class="search-result-title">${highlightedTitle}</h4>
                <div class="search-result-channel">${highlightedChannel}</div>
                <div class="search-result-stats">${video.views} views · ${video.uploadDate}</div>
            </div>
        `;
        
        searchResultsContent.appendChild(item);
    });
    
    searchResults.style.display = 'block';
}

// Bind events to the DOM elements
function bindEvents() { // Bind events to the DOM elements
    // Search event
    searchInput.addEventListener('input', (e) => {
        performSearch(e.target.value);
    });
    
    searchBtn.addEventListener('click', () => {
        performSearch(searchInput.value);
    });
    
    // Close the search results when clicking outside
    document.addEventListener('click', (e) => {
        if (!e.target.closest('.search-container') && !e.target.closest('.search-results')) {
            searchResults.style.display = 'none';
        }
    });
    
    // Category buttons event   
    categoryBtns.forEach(btn => {
        btn.addEventListener('click', () => {
            // Remove all active states
            categoryBtns.forEach(b => b.classList.remove('active'));
            // Add current active state
            btn.classList.add('active');
            // Update current category
            currentCategory = btn.textContent;
            // Re-render videos and shorts
            renderVideos();
        });
    });
    
    // Sidebar navigation buttons event
    const navBtns = document.querySelectorAll('.nav-btn');
    navBtns.forEach(btn => {
        btn.addEventListener('click', () => {
            // Remove all active states
            navBtns.forEach(b => b.classList.remove('active'));
            // Add current active state
            btn.classList.add('active');
        });
    });
    
    // Subscription section expand/collapse event
    const subscriptionTitle = document.querySelector('.nav-section-title');
    subscriptionTitle.addEventListener('click', () => {
        const subscriptionsList = document.querySelector('.subscriptions-list');
        const chevron = subscriptionTitle.querySelector('i');
        
        if (subscriptionsList.style.display === 'none') {
            subscriptionsList.style.display = 'block';
            chevron.style.transform = 'rotate(0deg)';
        } else {
            subscriptionsList.style.display = 'none';
            chevron.style.transform = 'rotate(-90deg)';
        }
    });
}

// Page load event: initialize the application
window.addEventListener('DOMContentLoaded', init);