/**
 * ============================================
 * AUDIOHM WEB PLAYER - OPTIMIZED
 * Version: 2.0
 * Last Updated: 2026-01-19
 * ============================================
 */

// ============================================
// STATE MANAGEMENT
// ============================================
const AppState = {
    isAuthenticated: false,
    currentPage: 'home',
    currentTrack: null,
    isPlaying: false,
    isShuffle: false,
    repeatMode: 'none', // none, one, all
    volume: 100,
    isMuted: false,
    likedTracks: new Set(),
    playlists: [],
    queue: [],
    queuePosition: 0,
    isQueuePanelOpen: false
};

// ============================================
// DOM ELEMENTS
// ============================================
const DOM = {
    // Screens
    loadingScreen: null,
    loginScreen: null,
    mainApp: null,

    // Forms
    loginForm: null,
    registerForm: null,
    authError: null,

    // Navigation
    sidebar: null,
    navItems: null,
    mobileMenuBtn: null,
    logoutBtn: null,

    // Pages
    pages: {},

    // Player
    audioPlayer: null,
    playBtn: null,
    prevBtn: null,
    nextBtn: null,
    shuffleBtn: null,
    repeatBtn: null,
    progressBar: null,
    volumeBar: null,
    muteBtn: null,
    likeBtn: null,
    playerCover: null,
    playerTitle: null,
    playerArtist: null,
    playerCoverDesktop: null,
    playerTitleDesktop: null,
    playerArtistDesktop: null,
    mobilePlayBtn: null,
    mobileLikeBtn: null,
    currentTime: null,
    totalTime: null,

    // Queue
    queuePanel: null,
    queueList: null,
    queueOpenBtn: null,
    queueCloseBtn: null,
    queueShuffleBtn: null,
    queueClearBtn: null,
    queueCount: null,

    // Toast
    toastContainer: null
};

// ============================================
// INITIALIZATION
// ============================================
function init() {
    console.log('='.repeat(80));
    console.log('[INIT] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[INIT] ║           AUDIOHM APPLICATION INITIALIZATION STARTING                      ║');
    console.log('[INIT] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[INIT] Timestamp:', new Date().toISOString());
    console.log('[INIT] User Agent:', navigator.userAgent);
    console.log('='.repeat(80));

    console.log('[INIT] → Step 1: Caching DOM elements...');
    cacheDOM();
    console.log('[INIT] ✓ DOM elements cached');

    console.log('[INIT] → Step 2: Checking authentication...');
    checkAuth();
    console.log('[INIT] ✓ Authentication checked');

    console.log('[INIT] → Step 3: Loading queue from storage...');
    loadQueueFromStorage();
    console.log('[INIT] ✓ Queue loaded from storage');

    console.log('[INIT] → Step 4: Setting up event listeners...');
    setupEventListeners();
    console.log('[INIT] ✓ Event listeners set up');

    console.log('[INIT] → Step 5: Hiding loading screen...');
    hideLoadingScreen();
    console.log('[INIT] ✓ Loading screen hidden');

    console.log('='.repeat(80));
    console.log('[INIT] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[INIT] ║           AUDIOHM APPLICATION INITIALIZED SUCCESSFULLY                   ║');
    console.log('[INIT] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[INIT] Ready for user interaction!');
    console.log('='.repeat(80));
}

window.cacheDOM = function() {
    console.log('='.repeat(80));
    console.log('[cacheDOM] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[cacheDOM] ║           CACHING DOM ELEMENTS                                          ║');
    console.log('[cacheDOM] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('='.repeat(80));

    console.log('[cacheDOM] → Caching screen elements...');
    DOM.loadingScreen = document.getElementById('loading-screen');
    console.log('[cacheDOM]   ✓ loading-screen:', !!DOM.loadingScreen);

    DOM.loginScreen = document.getElementById('login-screen');
    console.log('[cacheDOM]   ✓ login-screen:', !!DOM.loginScreen);

    DOM.mainApp = document.getElementById('main-app');
    console.log('[cacheDOM]   ✓ main-app:', !!DOM.mainApp);

    console.log('[cacheDOM] → Caching form elements...');
    DOM.loginForm = document.getElementById('login-form');
    console.log('[cacheDOM]   ✓ login-form:', !!DOM.loginForm);

    DOM.registerForm = document.getElementById('register-form');
    console.log('[cacheDOM]   ✓ register-form:', !!DOM.registerForm);

    DOM.authError = document.getElementById('auth-error');
    console.log('[cacheDOM]   ✓ auth-error:', !!DOM.authError);

    console.log('[cacheDOM] → Caching navigation elements...');
    DOM.sidebar = document.getElementById('sidebar');
    console.log('[cacheDOM]   ✓ sidebar:', !!DOM.sidebar);

    DOM.navItems = document.querySelectorAll('.nav-item');
    console.log('[cacheDOM]   ✓ nav-items:', DOM.navItems.length);

    DOM.mobileMenuBtn = document.getElementById('mobile-menu-btn');
    console.log('[cacheDOM]   ✓ mobile-menu-btn:', !!DOM.mobileMenuBtn);

    DOM.logoutBtn = document.getElementById('logout-btn');
    console.log('[cacheDOM]   ✓ logout-btn:', !!DOM.logoutBtn);

    console.log('[cacheDOM] → Caching page elements...');
    ['home', 'search', 'library'].forEach(page => {
        DOM.pages[page] = document.getElementById(`${page}-page`);
        console.log(`[cacheDOM]   ✓ ${page}-page:`, !!DOM.pages[page]);
    });

    console.log('[cacheDOM] → Caching audio player elements...');
    DOM.audioPlayer = document.getElementById('audio-player');
    console.log('[cacheDOM]   ✓ audio-player:', !!DOM.audioPlayer);

    DOM.playBtn = document.getElementById('play-btn');
    console.log('[cacheDOM]   ✓ play-btn:', !!DOM.playBtn);

    DOM.prevBtn = document.getElementById('prev-btn');
    console.log('[cacheDOM]   ✓ prev-btn:', !!DOM.prevBtn);

    DOM.nextBtn = document.getElementById('next-btn');
    console.log('[cacheDOM]   ✓ next-btn:', !!DOM.nextBtn);

    DOM.shuffleBtn = document.getElementById('shuffle-btn');
    console.log('[cacheDOM]   ✓ shuffle-btn:', !!DOM.shuffleBtn);

    DOM.repeatBtn = document.getElementById('repeat-btn');
    console.log('[cacheDOM]   ✓ repeat-btn:', !!DOM.repeatBtn);

    DOM.progressBar = document.getElementById('progress-bar');
    console.log('[cacheDOM]   ✓ progress-bar:', !!DOM.progressBar);

    DOM.volumeBar = document.getElementById('volume-bar');
    console.log('[cacheDOM]   ✓ volume-bar:', !!DOM.volumeBar);

    DOM.muteBtn = document.getElementById('mute-btn');
    console.log('[cacheDOM]   ✓ mute-btn:', !!DOM.muteBtn);

    DOM.likeBtn = document.getElementById('like-btn');
    console.log('[cacheDOM]   ✓ like-btn:', !!DOM.likeBtn);

    console.log('[cacheDOM] → Caching player UI elements (mobile)...');
    DOM.playerCover = document.getElementById('player-cover');
    console.log('[cacheDOM]   ✓ player-cover:', !!DOM.playerCover);

    DOM.playerTitle = document.getElementById('player-title');
    console.log('[cacheDOM]   ✓ player-title:', !!DOM.playerTitle);

    DOM.playerArtist = document.getElementById('player-artist');
    console.log('[cacheDOM]   ✓ player-artist:', !!DOM.playerArtist);

    console.log('[cacheDOM] → Caching player UI elements (desktop)...');
    DOM.playerCoverDesktop = document.getElementById('player-cover-desktop');
    console.log('[cacheDOM]   ✓ player-cover-desktop:', !!DOM.playerCoverDesktop);

    DOM.playerTitleDesktop = document.getElementById('player-title-desktop');
    console.log('[cacheDOM]   ✓ player-title-desktop:', !!DOM.playerTitleDesktop);

    DOM.playerArtistDesktop = document.getElementById('player-artist-desktop');
    console.log('[cacheDOM]   ✓ player-artist-desktop:', !!DOM.playerArtistDesktop);

    console.log('[cacheDOM] → Caching mobile controls...');
    DOM.mobilePlayBtn = document.getElementById('mobile-play-btn');
    console.log('[cacheDOM]   ✓ mobile-play-btn:', !!DOM.mobilePlayBtn);

    DOM.mobileLikeBtn = document.getElementById('mobile-like-btn');
    console.log('[cacheDOM]   ✓ mobile-like-btn:', !!DOM.mobileLikeBtn);

    console.log('[cacheDOM] → Caching time display elements...');
    DOM.currentTime = document.getElementById('current-time');
    console.log('[cacheDOM]   ✓ current-time:', !!DOM.currentTime);

    DOM.totalTime = document.getElementById('total-time');
    console.log('[cacheDOM]   ✓ total-time:', !!DOM.totalTime);

    console.log('[cacheDOM] → Caching toast container...');
    DOM.toastContainer = document.getElementById('toast-container');
    console.log('[cacheDOM]   ✓ toast-container:', !!DOM.toastContainer);

    console.log('[cacheDOM] → Caching queue panel elements...');
    DOM.queuePanel = document.getElementById('queue-panel');
    console.log('[cacheDOM]   ✓ queue-panel:', !!DOM.queuePanel);

    DOM.queueList = document.getElementById('queue-list');
    console.log('[cacheDOM]   ✓ queue-list:', !!DOM.queueList);

    DOM.queueOpenBtn = document.getElementById('queue-open-btn');
    console.log('[cacheDOM]   ✓ queue-open-btn:', !!DOM.queueOpenBtn);

    DOM.queueCloseBtn = document.getElementById('queue-close-btn');
    console.log('[cacheDOM]   ✓ queue-close-btn:', !!DOM.queueCloseBtn);

    DOM.queueShuffleBtn = document.getElementById('queue-shuffle-btn');
    console.log('[cacheDOM]   ✓ queue-shuffle-btn:', !!DOM.queueShuffleBtn);

    DOM.queueClearBtn = document.getElementById('queue-clear-btn');
    console.log('[cacheDOM]   ✓ queue-clear-btn:', !!DOM.queueClearBtn);

    DOM.queueCount = document.getElementById('queue-count');
    console.log('[cacheDOM]   ✓ queue-count:', !!DOM.queueCount);

    console.log('='.repeat(80));
    console.log('[cacheDOM] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[cacheDOM] ║           DOM ELEMENTS CACHED SUCCESSFULLY                               ║');
    console.log('[cacheDOM] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[cacheDOM] Total DOM objects cached:', Object.keys(DOM).length);
    console.log('='.repeat(80));
}

// ============================================
// EVENT LISTENERS
// ============================================
window.setupEventListeners = function() {
    // Auth forms
    if (DOM.loginForm) {
        DOM.loginForm.addEventListener('submit', handleLogin);
    }

    if (DOM.registerForm) {
        DOM.registerForm.addEventListener('submit', handleRegister);
    }

    // Show/hide register forms
    const showRegister = document.getElementById('show-register');
    const showLogin = document.getElementById('show-login');

    if (showRegister) {
        showRegister.addEventListener('click', (e) => {
            e.preventDefault();
            DOM.loginForm.classList.add('hidden');
            DOM.registerForm.classList.remove('hidden');
        });
    }

    if (showLogin) {
        showLogin.addEventListener('click', (e) => {
            e.preventDefault();
            DOM.registerForm.classList.add('hidden');
            DOM.loginForm.classList.remove('hidden');
        });
    }

    // Navigation
    DOM.navItems.forEach(item => {
        item.addEventListener('click', (e) => {
            e.preventDefault();
            const page = item.dataset.page;
            navigateTo(page);
        });
    });

    // Mobile menu
    if (DOM.mobileMenuBtn) {
        DOM.mobileMenuBtn.addEventListener('click', toggleMobileMenu);
    }

    // Logout
    if (DOM.logoutBtn) {
        DOM.logoutBtn.addEventListener('click', handleLogout);
    }

    // Search functionality
    const quickSearchBtn = document.getElementById('quick-search-btn');
    const quickSearchInput = document.getElementById('quick-search');
    const searchBtn = document.getElementById('search-btn');
    const searchInput = document.getElementById('search-input');

    // Quick search button click
    if (quickSearchBtn) {
        quickSearchBtn.addEventListener('click', handleQuickSearch);
    }

    // Quick search Enter key
    if (quickSearchInput) {
        quickSearchInput.addEventListener('keypress', (e) => {
            if (e.key === 'Enter') {
                e.preventDefault();
                handleQuickSearch();
            }
        });
    }

    // Main search button click
    if (searchBtn) {
        searchBtn.addEventListener('click', handleMainSearch);
    }

    // Main search Enter key
    if (searchInput) {
        searchInput.addEventListener('keypress', (e) => {
            if (e.key === 'Enter') {
                e.preventDefault();
                handleMainSearch();
            }
        });
    }

    // Player controls
    setupPlayerControls();

    // Playlist management
    const createPlaylistBtn = document.getElementById('create-playlist-btn');
    if (createPlaylistBtn) {
        createPlaylistBtn.addEventListener('click', showCreatePlaylistModal);
    }

    const createPlaylistForm = document.getElementById('create-playlist-form');
    if (createPlaylistForm) {
        createPlaylistForm.addEventListener('submit', createPlaylist);
    }

    const closeCreatePlaylistModal = document.getElementById('close-create-playlist-modal');
    if (closeCreatePlaylistModal) {
        closeCreatePlaylistModal.addEventListener('click', hideCreatePlaylistModal);
    }

    const cancelCreatePlaylist = document.getElementById('cancel-create-playlist');
    if (cancelCreatePlaylist) {
        cancelCreatePlaylist.addEventListener('click', hideCreatePlaylistModal);
    }

    const closePlaylistDetails = document.getElementById('close-playlist-details');
    if (closePlaylistDetails) {
        closePlaylistDetails.addEventListener('click', hidePlaylistDetails);
    }

    const playPlaylistBtn = document.getElementById('play-playlist-btn');
    if (playPlaylistBtn) {
        playPlaylistBtn.addEventListener('click', () => {
            if (window.currentPlaylistId) {
                playPlaylist(window.currentPlaylistId, false);
            }
        });
    }

    const shufflePlaylistBtn = document.getElementById('shuffle-playlist-btn');
    if (shufflePlaylistBtn) {
        shufflePlaylistBtn.addEventListener('click', () => {
            if (window.currentPlaylistId) {
                playPlaylist(window.currentPlaylistId, true);
            }
        });
    }

    // Close dropdowns when clicking outside
    document.addEventListener('click', (e) => {
        if (!e.target.closest('[id^="playlist-dropdown-"]') && !e.target.closest('button')) {
            document.querySelectorAll('[id^="playlist-dropdown-"]').forEach(dropdown => {
                dropdown.classList.add('hidden');
            });
        }
    });

    // Close dropdowns when scrolling
    document.addEventListener('scroll', (e) => {
        document.querySelectorAll('[id^="playlist-dropdown-"]').forEach(dropdown => {
            dropdown.classList.add('hidden');
        });
    }, true);

    // Close modals with Escape
    document.addEventListener('keydown', (e) => {
        if (e.key === 'Escape') {
            hideCreatePlaylistModal();
            hidePlaylistDetails();
        }
    });
}

window.setupPlayerControls = function() {
    // Play/Pause
    if (DOM.playBtn) {
        DOM.playBtn.addEventListener('click', togglePlayPause);
    }

    // Mobile Play/Pause
    if (DOM.mobilePlayBtn) {
        DOM.mobilePlayBtn.addEventListener('click', togglePlayPause);
    }

    // Previous/Next
    if (DOM.prevBtn) {
        DOM.prevBtn.addEventListener('click', playPrevious);
    }

    if (DOM.nextBtn) {
        DOM.nextBtn.addEventListener('click', playNext);
    }

    // Shuffle
    if (DOM.shuffleBtn) {
        DOM.shuffleBtn.addEventListener('click', toggleShuffle);
    }

    // Repeat
    if (DOM.repeatBtn) {
        DOM.repeatBtn.addEventListener('click', toggleRepeat);
    }

    // Progress bar
    if (DOM.progressBar) {
        DOM.progressBar.addEventListener('input', handleSeek);
    }

    // Volume
    if (DOM.volumeBar) {
        DOM.volumeBar.addEventListener('input', handleVolumeChange);
    }

    // Mute
    if (DOM.muteBtn) {
        DOM.muteBtn.addEventListener('click', toggleMute);
    }

    // Like
    if (DOM.likeBtn) {
        DOM.likeBtn.addEventListener('click', toggleLike);
    }

    // Mobile Like
    if (DOM.mobileLikeBtn) {
        DOM.mobileLikeBtn.addEventListener('click', toggleLike);
    }

    // Audio events
    if (DOM.audioPlayer) {
        DOM.audioPlayer.addEventListener('timeupdate', updateProgress);
        DOM.audioPlayer.addEventListener('loadedmetadata', updateDuration);
        DOM.audioPlayer.addEventListener('ended', handleTrackEnd);
    }

    // Queue panel controls
    if (DOM.queueOpenBtn) {
        DOM.queueOpenBtn.addEventListener('click', openQueuePanel);
    }

    if (DOM.queueCloseBtn) {
        DOM.queueCloseBtn.addEventListener('click', closeQueuePanel);
    }

    if (DOM.queueShuffleBtn) {
        DOM.queueShuffleBtn.addEventListener('click', shuffleQueue);
    }

    if (DOM.queueClearBtn) {
        DOM.queueClearBtn.addEventListener('click', clearQueue);
    }
}

// ============================================
// AUTHENTICATION
// ============================================
window.checkAuth = async function() {
    const token = localStorage.getItem('token');

    if (!token) {
        showScreen('login');
        return;
    }

    try {
        const response = await fetch('/api/v1/auth/me', {
            headers: {
                'Authorization': `Bearer ${token}`
            }
        });

        if (response.ok) {
            AppState.isAuthenticated = true;
            showScreen('main');
            loadUserData();
        } else {
            localStorage.removeItem('token');
            showScreen('login');
        }
    } catch (error) {
        console.error('Auth check failed:', error);
        showScreen('login');
    }
}

window.handleLogin = async function(e) {
    e.preventDefault();

    const email = document.getElementById('login-email').value;
    const password = document.getElementById('login-password').value;

    try {
        const response = await fetch('/api/v1/auth/login', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json'
            },
            body: JSON.stringify({ email, password })
        });

        const data = await response.json();

        if (response.ok) {
            localStorage.setItem('token', data.access_token);
            AppState.isAuthenticated = true;
            showScreen('main');
            showToast('Connexion réussie!', 'success');
        } else {
            showError(data.detail || 'Email ou mot de passe incorrect');
        }
    } catch (error) {
        console.error('Login failed:', error);
        showError('Erreur de connexion');
    }
}

window.handleRegister = async function(e) {
    e.preventDefault();

    const username = document.getElementById('register-username').value;
    const email = document.getElementById('register-email').value;
    const password = document.getElementById('register-password').value;

    try {
        const response = await fetch('/api/v1/auth/register', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json'
            },
            body: JSON.stringify({ username, email, password })
        });

        const data = await response.json();

        if (response.ok) {
            localStorage.setItem('token', data.access_token);
            AppState.isAuthenticated = true;
            showScreen('main');
            showToast('Compte créé avec succès!', 'success');
        } else {
            showError(data.detail || 'Erreur lors de la création du compte');
        }
    } catch (error) {
        console.error('Register failed:', error);
        showError('Erreur de connexion');
    }
}

window.handleLogout = function() {
    localStorage.removeItem('token');
    AppState.isAuthenticated = false;
    showScreen('login');
    showToast('Déconnexion réussie', 'success');
}

// ============================================
// NAVIGATION
// ============================================
window.navigateTo = function(page) {
    // Update active nav item
    DOM.navItems.forEach(item => {
        const isActive = item.dataset.page === page;
        item.classList.remove('active');
        item.removeAttribute('aria-current');

        if (isActive) {
            item.classList.add('active');
            item.setAttribute('aria-current', 'page');
        }
    });

    // Show/hide pages
    Object.keys(DOM.pages).forEach(key => {
        if (key === page) {
            DOM.pages[key].classList.remove('hidden');
            DOM.pages[key].classList.add('active');
        } else {
            DOM.pages[key].classList.add('hidden');
            DOM.pages[key].classList.remove('active');
        }
    });

    AppState.currentPage = page;

    // Close mobile menu
    const sidebar = DOM.sidebar;
    sidebar.classList.remove('open');
    sidebar.classList.add('-translate-x-full');

    // Update mobile menu button
    if (DOM.mobileMenuBtn) {
        DOM.mobileMenuBtn.setAttribute('aria-expanded', 'false');
        DOM.mobileMenuBtn.setAttribute('aria-label', 'Ouvrir le menu');
    }

    // Focus management for accessibility
    const mainContent = document.getElementById('main-content');
    if (mainContent) {
        mainContent.focus();
    }
}

/**
 * Switch between library tabs (Playlists, Liked, History)
 * @param {string} tabName - The tab name to switch to ('playlists', 'liked', 'history')
 */
window.switchLibraryTab = function(tabName) {
    console.log('='.repeat(80));
    console.log('[switchLibraryTab] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[switchLibraryTab] ║           SWITCHLIBRARYTAB FUNCTION CALLED                             ║');
    console.log('[switchLibraryTab] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[switchLibraryTab] Timestamp:', new Date().toISOString());
    console.log('[switchLibraryTab] Tab to switch to:', tabName);
    console.log('='.repeat(80));

    const validTabs = ['playlists', 'liked', 'history'];
    if (!validTabs.includes(tabName)) {
        console.error('[switchLibraryTab] ✗ Invalid tab name:', tabName);
        return;
    }
    console.log('[switchLibraryTab] ✓ Tab name is valid');

    // Update tab buttons
    console.log('[switchLibraryTab] → Updating tab buttons...');
    document.querySelectorAll('.library-tab').forEach(tab => {
        const isActive = tab.id === `tab-${tabName}`;
        console.log('[switchLibraryTab]   → Tab:', tab.id, 'active:', isActive);

        tab.classList.remove('active');
        tab.setAttribute('aria-selected', 'false');

        if (isActive) {
            tab.classList.add('active');
            tab.setAttribute('aria-selected', 'true');
        }
    });
    console.log('[switchLibraryTab] ✓ Tab buttons updated');

    // Update tab panels
    console.log('[switchLibraryTab] → Updating tab panels...');
    document.querySelectorAll('.tab-panel').forEach(panel => {
        const isActive = panel.id === `library-${tabName}`;
        console.log('[switchLibraryTab]   → Panel:', panel.id, 'active:', isActive);

        panel.classList.remove('active');
        panel.classList.add('hidden');

        if (isActive) {
            panel.classList.add('active');
            panel.classList.remove('hidden');
        }
    });
    console.log('[switchLibraryTab] ✓ Tab panels updated');

    console.log('[switchLibraryTab] ✓ Tab switched successfully to:', tabName);
    console.log('='.repeat(80));
}

window.toggleMobileMenu = function() {
    const sidebar = DOM.sidebar;
    const isOpen = sidebar.classList.contains('open') || !sidebar.classList.contains('-translate-x-full');

    if (isOpen) {
        sidebar.classList.remove('open');
        sidebar.classList.add('-translate-x-full');
        DOM.mobileMenuBtn?.setAttribute('aria-expanded', 'false');
        DOM.mobileMenuBtn?.setAttribute('aria-label', 'Ouvrir le menu');
    } else {
        sidebar.classList.add('open');
        sidebar.classList.remove('-translate-x-full');
        DOM.mobileMenuBtn?.setAttribute('aria-expanded', 'true');
        DOM.mobileMenuBtn?.setAttribute('aria-label', 'Fermer le menu');
    }
}

// Close menu when clicking outside
document.addEventListener('click', (e) => {
    if (!DOM.sidebar?.contains(e.target) && !DOM.mobileMenuBtn?.contains(e.target)) {
        DOM.sidebar?.classList.remove('open');
    }
});

// ============================================
// PLAYER CONTROLS
// ============================================
window.togglePlayPause = function() {
    console.log('='.repeat(80));
    console.log('[togglePlayPause] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[togglePlayPause] ║           TOGGLEPLAYPAUSE FUNCTION CALLED                               ║');
    console.log('[togglePlayPause] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[togglePlayPause] Timestamp:', new Date().toISOString());

    if (!DOM.audioPlayer) {
        console.error('[togglePlayPause] ✗ Audio player NOT found!');
        return;
    }
    console.log('[togglePlayPause] ✓ Audio player found');

    console.log('[togglePlayPause] → Checking if paused...');
    console.log('[togglePlayPause]   paused:', DOM.audioPlayer.paused);
    console.log('[togglePlayPause]   currentTime:', DOM.audioPlayer.currentTime);
    console.log('[togglePlayPause]   duration:', DOM.audioPlayer.duration);

    if (DOM.audioPlayer.paused) {
        console.log('[togglePlayPause] → Audio is paused, playing...');
        DOM.audioPlayer.play();
        updatePlayButton(true);
        console.log('[togglePlayPause] ✓ Play command sent');
    } else {
        console.log('[togglePlayPause] → Audio is playing, pausing...');
        DOM.audioPlayer.pause();
        updatePlayButton(false);
        console.log('[togglePlayPause] ✓ Pause command sent');
    }

    console.log('='.repeat(80));
}

window.updatePlayButton = function(isPlaying) {
    console.log('='.repeat(80));
    console.log('[updatePlayButton] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[updatePlayButton] ║           UPDATEPLAYBUTTON FUNCTION CALLED                              ║');
    console.log('[updatePlayButton] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[updatePlayButton] Timestamp:', new Date().toISOString());
    console.log('[updatePlayButton] Parameter:', { isPlaying });
    console.log('='.repeat(80));

    // Update desktop play button
    console.log('[updatePlayButton] → Updating desktop play button...');
    const icon = DOM.playBtn?.querySelector('i');
    if (icon) {
        console.log('[updatePlayButton] ✓ Desktop button icon found');
        console.log('[updatePlayButton]   Current classes:', icon.className);

        if (isPlaying) {
            console.log('[updatePlayButton] → Switching to PAUSE icon');
            icon.classList.remove('fa-play');
            icon.classList.add('fa-pause');
            DOM.playBtn?.setAttribute('aria-label', 'Pause');
            DOM.playBtn?.setAttribute('aria-pressed', 'true');
            console.log('[updatePlayButton] ✓ Desktop button updated to pause');
        } else {
            console.log('[updatePlayButton] → Switching to PLAY icon');
            icon.classList.remove('fa-pause');
            icon.classList.add('fa-play');
            DOM.playBtn?.setAttribute('aria-label', 'Lecture');
            DOM.playBtn?.setAttribute('aria-pressed', 'false');
            console.log('[updatePlayButton] ✓ Desktop button updated to play');
        }
    } else {
        console.warn('[updatePlayButton] ✗ Desktop button icon NOT found');
    }

    // Update mobile play button
    console.log('[updatePlayButton] → Updating mobile play button...');
    const mobileIcon = DOM.mobilePlayBtn?.querySelector('i');
    if (mobileIcon) {
        console.log('[updatePlayButton] ✓ Mobile button icon found');
        console.log('[updatePlayButton]   Current classes:', mobileIcon.className);

        if (isPlaying) {
            console.log('[updatePlayButton] → Switching to PAUSE icon (mobile)');
            mobileIcon.classList.remove('fa-play');
            mobileIcon.classList.add('fa-pause');
            DOM.mobilePlayBtn?.setAttribute('aria-label', 'Pause');
            DOM.mobilePlayBtn?.setAttribute('aria-pressed', 'true');
            console.log('[updatePlayButton] ✓ Mobile button updated to pause');
        } else {
            console.log('[updatePlayButton] → Switching to PLAY icon (mobile)');
            mobileIcon.classList.remove('fa-pause');
            mobileIcon.classList.add('fa-play');
            DOM.mobilePlayBtn?.setAttribute('aria-label', 'Lecture');
            DOM.mobilePlayBtn?.setAttribute('aria-pressed', 'false');
            console.log('[updatePlayButton] ✓ Mobile button updated to play');
        }
    } else {
        console.warn('[updatePlayButton] ✗ Mobile button icon NOT found');
    }

    console.log('='.repeat(80));
    console.log('[updatePlayButton] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[updatePlayButton] ║           UPDATEPLAYBUTTON FUNCTION COMPLETED                             ║');
    console.log('[updatePlayButton] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('='.repeat(80));
}

window.playPrevious = function() {
    console.log('='.repeat(80));
    console.log('[playPrevious] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[playPrevious] ║           PLAYPREVIOUS FUNCTION CALLED                                  ║');
    console.log('[playPrevious] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[playPrevious] Timestamp:', new Date().toISOString());
    console.log('[playPrevious] Queue position:', AppState.queuePosition);
    console.log('[playPrevious] Queue length:', AppState.queue.length);
    console.log('='.repeat(80));

    if (AppState.queue.length === 0) {
        console.warn('[playPrevious] ✗ Queue is empty');
        showToast('File d\'attente vide', 'info');
        return;
    }

    // If we're more than 3 seconds into the track, restart it
    if (DOM.audioPlayer && DOM.audioPlayer.currentTime > 3) {
        console.log('[playPrevious] → Restarting current track (more than 3 seconds played)');
        DOM.audioPlayer.currentTime = 0;
        return;
    }

    // Move to previous track
    if (AppState.queuePosition > 0) {
        console.log('[playPrevious] → Moving to previous track');
        AppState.queuePosition--;
        console.log('[playPrevious]   New position:', AppState.queuePosition);

        const track = AppState.queue[AppState.queuePosition];
        console.log('[playPrevious]   Track to play:', track);

        if (track) {
            // Determine if this is a YouTube track
            const isYoutubeTrack = !!track.youtube_id;
            const trackId = track.youtube_id || track.id;

            console.log('[playPrevious] → Calling playTrack with skipQueuePositionUpdate=true...');
            playTrack(trackId, isYoutubeTrack, true);
            console.log('[playPrevious] ✓ Previous track playing');
        } else {
            console.error('[playPrevious] ✗ Track not found at position', AppState.queuePosition);
        }
    } else {
        console.log('[playPrevious] → Already at first track, restarting');
        if (DOM.audioPlayer) {
            DOM.audioPlayer.currentTime = 0;
        }
    }

    updateQueueUI();
    console.log('='.repeat(80));
}

window.updateLikeButtonState = function(trackId, isLiked) {
    // Update desktop button
    if (DOM.likeBtn) {
        const icon = DOM.likeBtn.querySelector('i');
        if (icon) {
            if (isLiked) {
                DOM.likeBtn.classList.add('text-accent-400');
                icon.classList.remove('far');
                icon.classList.add('fas');
            } else {
                DOM.likeBtn.classList.remove('text-accent-400');
                icon.classList.remove('fas');
                icon.classList.add('far');
            }
        }
    }

    // Update mobile button
    if (DOM.mobileLikeBtn) {
        const mobileIcon = DOM.mobileLikeBtn.querySelector('i');
        if (mobileIcon) {
            if (isLiked) {
                DOM.mobileLikeBtn.classList.add('text-accent-400');
                mobileIcon.classList.remove('far');
                mobileIcon.classList.add('fas');
            } else {
                DOM.mobileLikeBtn.classList.remove('text-accent-400');
                mobileIcon.classList.remove('fas');
                mobileIcon.classList.add('far');
            }
        }
    }
}

window.playNext = function() {
    console.log('='.repeat(80));
    console.log('[playNext] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[playNext] ║           PLAYNEXT FUNCTION CALLED                                       ║');
    console.log('[playNext] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[playNext] Timestamp:', new Date().toISOString());
    console.log('[playNext] Queue position:', AppState.queuePosition);
    console.log('[playNext] Queue length:', AppState.queue.length);
    console.log('[playNext] Repeat mode:', AppState.repeatMode);
    console.log('='.repeat(80));

    if (AppState.queue.length === 0) {
        console.warn('[playNext] ✗ Queue is empty');
        showToast('File d\'attente vide', 'info');
        return;
    }

    // Move to next track
    if (AppState.queuePosition < AppState.queue.length - 1) {
        console.log('[playNext] → Moving to next track');
        AppState.queuePosition++;
        console.log('[playNext]   New position:', AppState.queuePosition);

        const track = AppState.queue[AppState.queuePosition];
        console.log('[playNext]   Track to play:', track);

        if (track) {
            // Determine if this is a YouTube track
            const isYoutubeTrack = !!track.youtube_id;
            const trackId = track.youtube_id || track.id;

            console.log('[playNext] → Calling playTrack with skipQueuePositionUpdate=true...');
            playTrack(trackId, isYoutubeTrack, true);
            console.log('[playNext] ✓ Next track playing');
        } else {
            console.error('[playNext] ✗ Track not found at position', AppState.queuePosition);
        }
    } else {
        // At the end of queue
        if (AppState.repeatMode === 'all') {
            console.log('[playNext] → Repeat all mode, going back to start');
            AppState.queuePosition = 0;
            const track = AppState.queue[0];

            if (track) {
                const isYoutubeTrack = !!track.youtube_id;
                const trackId = track.youtube_id || track.id;
                console.log('[playNext] → Calling playTrack with skipQueuePositionUpdate=true...');
                playTrack(trackId, isYoutubeTrack, true);
            }
        } else {
            console.log('[playNext] → End of queue, stopping playback');
            updatePlayButton(false);
            showToast('Fin de la file d\'attente', 'info');
        }
    }

    updateQueueUI();
    console.log('='.repeat(80));
}

window.toggleShuffle = function() {
    AppState.isShuffle = !AppState.isShuffle;

    if (DOM.shuffleBtn) {
        DOM.shuffleBtn.classList.toggle('active', AppState.isShuffle);
        DOM.shuffleBtn.classList.toggle('text-primary-400', AppState.isShuffle);
        DOM.shuffleBtn.setAttribute('aria-pressed', AppState.isShuffle.toString());
    }

    showToast(AppState.isShuffle ? 'Aléatoire activé' : 'Aléatoire désactivé', 'success');
}

window.toggleRepeat = function() {
    const modes = ['none', 'all', 'one'];
    const currentIndex = modes.indexOf(AppState.repeatMode);
    const nextIndex = (currentIndex + 1) % modes.length;
    AppState.repeatMode = modes[nextIndex];

    if (DOM.repeatBtn) {
        DOM.repeatBtn.classList.remove('active', 'text-primary-400');
        if (AppState.repeatMode !== 'none') {
            DOM.repeatBtn.classList.add('active', 'text-primary-400');
        }
        DOM.repeatBtn.setAttribute('aria-pressed', (AppState.repeatMode !== 'none').toString());
    }

    const messages = {
        none: 'Répétition désactivée',
        all: 'Répétition de toutes les pistes',
        one: 'Répétition de la piste actuelle'
    };

    showToast(messages[AppState.repeatMode], 'success');
}

window.handleSeek = function() {
    if (!DOM.audioPlayer || !DOM.progressBar) return;

    const time = (DOM.progressBar.value / 100) * DOM.audioPlayer.duration;
    DOM.audioPlayer.currentTime = time;
}

window.handleVolumeChange = function() {
    if (!DOM.audioPlayer || !DOM.volumeBar) return;

    AppState.volume = DOM.volumeBar.value;
    DOM.audioPlayer.volume = AppState.volume / 100;
    AppState.isMuted = false;
    updateVolumeIcon();
}

window.toggleMute = function() {
    if (!DOM.audioPlayer) return;

    AppState.isMuted = !AppState.isMuted;
    DOM.audioPlayer.muted = AppState.isMuted;
    updateVolumeIcon();

    if (DOM.muteBtn) {
        DOM.muteBtn.setAttribute('aria-pressed', AppState.isMuted.toString());
        const labels = {
            true: 'Activer le son',
            false: 'Couper le son'
        };
        DOM.muteBtn.setAttribute('aria-label', labels[AppState.isMuted]);
    }
}

window.updateVolumeIcon = function() {
    const icon = DOM.muteBtn?.querySelector('i');
    if (!icon) return;

    icon.className = 'fas';

    if (AppState.isMuted || AppState.volume === 0) {
        icon.classList.add('fa-volume-mute');
    } else if (AppState.volume < 50) {
        icon.classList.add('fa-volume-down');
    } else {
        icon.classList.add('fa-volume-up');
    }

    // Update ARIA valuetext for volume slider
    if (DOM.volumeBar) {
        DOM.volumeBar.setAttribute('aria-valuenow', AppState.volume.toString());
        DOM.volumeBar.setAttribute('aria-valuetext', `${AppState.volume}%`);
    }
}

window.toggleLike = function() {
    console.log('='.repeat(80));
    console.log('[toggleLike] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[toggleLike] ║           TOGGLELIKE FUNCTION CALLED (PLAYER BUTTON)                     ║');
    console.log('[toggleLike] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[toggleLike] Timestamp:', new Date().toISOString());
    console.log('='.repeat(80));

    if (!DOM.likeBtn && !DOM.mobileLikeBtn) {
        console.error('[toggleLike] ✗ No like button found');
        return;
    }

    // Use either desktop or mobile button
    const btn = DOM.likeBtn || DOM.mobileLikeBtn;
    const trackId = btn?.dataset.trackId;
    if (!trackId) {
        console.error('[toggleLike] ✗ No track ID found in button dataset');
        return;
    }
    console.log('[toggleLike] ✓ Track ID found:', trackId);

    // Call the API function
    console.log('[toggleLike] → Calling toggleLikeTrack API function...');
    toggleLikeTrack(trackId);
    console.log('[toggleLike] ✓ toggleLikeTrack called');

    console.log('='.repeat(80));
}

window.updateProgress = function() {
    if (!DOM.audioPlayer || !DOM.progressBar) return;

    const progress = (DOM.audioPlayer.currentTime / DOM.audioPlayer.duration) * 100;
    DOM.progressBar.value = progress;

    // Update ARIA attributes for progress bar
    DOM.progressBar.setAttribute('aria-valuenow', Math.round(progress).toString());
    DOM.progressBar.setAttribute('aria-valuetext', `${Math.round(progress)}%`);

    if (DOM.currentTime) {
        DOM.currentTime.textContent = formatTime(DOM.audioPlayer.currentTime);
    }
}

window.updateDuration = function() {
    if (!DOM.audioPlayer || !DOM.totalTime) return;

    DOM.totalTime.textContent = formatTime(DOM.audioPlayer.duration);
}

window.handleTrackEnd = function() {
    console.log('='.repeat(80));
    console.log('[handleTrackEnd] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[handleTrackEnd] ║           HANDLETRACKEND FUNCTION CALLED                               ║');
    console.log('[handleTrackEnd] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[handleTrackEnd] Timestamp:', new Date().toISOString());
    console.log('[handleTrackEnd] Repeat mode:', AppState.repeatMode);
    console.log('='.repeat(80));

    if (AppState.repeatMode === 'one') {
        console.log('[handleTrackEnd] → Repeat one mode, restarting track');
        DOM.audioPlayer.currentTime = 0;
        DOM.audioPlayer.play();
    } else {
        console.log('[handleTrackEnd] → Playing next track in queue');
        playNext();
    }

    console.log('='.repeat(80));
}

// ============================================
// UTILITY FUNCTIONS
// ============================================
window.formatTime = function(seconds) {
    if (!seconds || isNaN(seconds)) return '0:00';

    const mins = Math.floor(seconds / 60);
    const secs = Math.floor(seconds % 60);

    return `${mins}:${secs.toString().padStart(2, '0')}`;
}

window.showScreen = function(screen) {
    if (DOM.loadingScreen) DOM.loadingScreen.classList.add('hidden');
    if (DOM.loginScreen) DOM.loginScreen.classList.toggle('hidden', screen !== 'login');
    if (DOM.mainApp) {
        DOM.mainApp.classList.toggle('hidden', screen !== 'main');
        if (screen === 'main') {
            DOM.mainApp.classList.add('visible');
        }
    }

    // Show/hide player based on authentication
    const player = document.getElementById('player');
    if (player) {
        if (screen === 'main') {
            player.classList.remove('hidden');
        } else {
            player.classList.add('hidden');
        }
    }
}

window.hideLoadingScreen = function() {
    if (DOM.loadingScreen) {
        setTimeout(() => {
            DOM.loadingScreen.style.display = 'none';
        }, 500);
    }
}

window.showError = function(message) {
    if (DOM.authError) {
        DOM.authError.textContent = message;
        DOM.authError.classList.remove('hidden');
    }
}

window.loadUserData = async function() {
    console.log('='.repeat(80));
    console.log('[loadUserData] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[loadUserData] ║           LOADING USER DATA                                             ║');
    console.log('[loadUserData] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[loadUserData] Timestamp:', new Date().toISOString());
    console.log('='.repeat(80));

    console.log('[loadUserData] → Loading playlists...');
    await loadPlaylists();
    console.log('[loadUserData] ✓ Playlists loaded');

    console.log('[loadUserData] → Loading trending tracks...');
    await loadTrendingTracks();
    console.log('[loadUserData] ✓ Trending tracks loaded');

    console.log('[loadUserData] → Loading liked tracks...');
    await loadLikedTracks();
    console.log('[loadUserData] ✓ Liked tracks loaded');

    console.log('[loadUserData] → Loading listening history...');
    await loadListeningHistory();
    console.log('[loadUserData] ✓ Listening history loaded');

    console.log('[loadUserData] ✓ All user data loaded successfully');
    console.log('='.repeat(80));
}

window.loadPlaylists = async function() {
    console.log('='.repeat(80));
    console.log('[loadPlaylists] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[loadPlaylists] ║           LOADING USER PLAYLISTS                                        ║');
    console.log('[loadPlaylists] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[loadPlaylists] Timestamp:', new Date().toISOString());
    console.log('='.repeat(80));

    const container = document.getElementById('my-playlists');
    if (!container) {
        console.error('[loadPlaylists] ✗ Container not found');
        return;
    }
    console.log('[loadPlaylists] ✓ Container found');

    try {
        console.log('[loadPlaylists] → Fetching playlists from API...');
        const token = localStorage.getItem('token');
        const response = await fetch('/api/v1/playlists', {
            headers: {
                'Authorization': `Bearer ${token}`
            }
        });

        console.log('[loadPlaylists] → Response status:', response.status);

        if (response.ok) {
            const playlists = await response.json();
            console.log('[loadPlaylists] ✓ Playlists loaded:', playlists.length);
            AppState.playlists = playlists;
            renderPlaylists(playlists);
            console.log('[loadPlaylists] ✓ Playlists rendered');
        } else {
            const error = await response.json();
            console.error('[loadPlaylists] ✗ Error loading playlists:', error);
            container.innerHTML = `
                <div class="col-span-1 sm:col-span-2 lg:col-span-3 flex flex-col items-center justify-center py-12 text-gray-400">
                    <i class="fas fa-exclamation-circle text-4xl mb-4 text-red-400"></i>
                    <p class="text-lg">Erreur de chargement</p>
                    <p class="text-sm mt-2">${error.detail || 'Impossible de charger les playlists'}</p>
                </div>
            `;
        }
    } catch (error) {
        console.error('[loadPlaylists] ✗ Exception:', error);
        container.innerHTML = `
            <div class="col-span-1 sm:col-span-2 lg:col-span-3 flex flex-col items-center justify-center py-12 text-gray-400">
                <i class="fas fa-wifi text-4xl mb-4"></i>
                <p class="text-lg">Erreur de connexion</p>
                <p class="text-sm mt-2">Vérifiez votre connexion internet</p>
            </div>
        `;
    }

    console.log('='.repeat(80));
    console.log('[loadPlaylists] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[loadPlaylists] ║           LOADPLAYLISTS FUNCTION COMPLETED                              ║');
    console.log('[loadPlaylists] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('='.repeat(80));
}

window.renderPlaylists = function(playlists) {
    console.log('='.repeat(80));
    console.log('[renderPlaylists] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[renderPlaylists] ║           RENDERPLAYLISTS FUNCTION STARTED                             ║');
    console.log('[renderPlaylists] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[renderPlaylists] Timestamp:', new Date().toISOString());
    console.log('[renderPlaylists] Playlists to render:', playlists.length);
    console.log('='.repeat(80));

    const container = document.getElementById('my-playlists');
    if (!container) {
        console.error('[renderPlaylists] ✗ Container not found');
        return;
    }
    console.log('[renderPlaylists] ✓ Container found');

    if (playlists.length === 0) {
        console.log('[renderPlaylists] → No playlists to render');
        container.innerHTML = `
            <div class="col-span-1 sm:col-span-2 lg:col-span-3 flex flex-col items-center justify-center py-12 text-gray-400">
                <i class="fas fa-list text-5xl mb-4"></i>
                <p class="text-lg">Aucune playlist</p>
                <p class="text-sm mt-2">Créez votre première playlist pour commencer</p>
            </div>
        `;
        console.log('[renderPlaylists] ✓ Empty state rendered');
        return;
    }

    console.log('[renderPlaylists] → Rendering playlist cards...');
    container.innerHTML = playlists.map((playlist, index) => {
        console.log(`[renderPlaylists] ┌─ Playlist #${index + 1}: ${playlist.name}`);
        console.log(`[renderPlaylists] │   ID: ${playlist.id}`);
        console.log(`[renderPlaylists] │   Description: ${playlist.description || 'none'}`);
        console.log(`[renderPlaylists] │   Image: ${playlist.image_url || 'default'}`);

        // Generate gradient based on playlist name for visual variety
        const gradients = [
            'from-purple-500 to-pink-500',
            'from-blue-500 to-cyan-500',
            'from-green-500 to-teal-500',
            'from-orange-500 to-red-500',
            'from-indigo-500 to-purple-500',
            'from-yellow-500 to-orange-500'
        ];
        const gradientIndex = index % gradients.length;
        const gradientClass = gradients[gradientIndex];

        // Use provided image or create gradient placeholder
        const coverImage = playlist.image_url || null;
        const coverStyle = coverImage
            ? `background-image: url('${coverImage}'); background-size: cover; background-position: center;`
            : `background: linear-gradient(135deg, var(--tw-gradient-stops));`;

        return `
        <div class="glass-card rounded-xl p-4 hover:bg-gray-700/50 transition-all group animate-fadeIn"
             data-playlist-id="${playlist.id}">
            <!-- Cover Image -->
            <div class="relative aspect-square rounded-lg overflow-hidden mb-3 ${!coverImage ? `bg-gradient-to-br ${gradientClass}` : ''}"
                 style="${coverStyle}">
                <img src="${coverImage || ''}" alt="" class="w-full h-full object-cover ${coverImage ? '' : 'hidden'}" aria-hidden="true">
                <div class="absolute inset-0 bg-black/40 opacity-0 group-hover:opacity-100 transition-all flex items-center justify-center">
                    <button onclick="event.stopPropagation(); playPlaylist('${playlist.id}', false)"
                            class="w-12 h-12 flex items-center justify-center bg-primary-600 hover:bg-primary-500 rounded-full transform hover:scale-110 transition-all"
                            aria-label="Lire la playlist">
                        <i class="fas fa-play text-white"></i>
                    </button>
                </div>
            </div>

            <!-- Info -->
            <div class="mb-3">
                <h3 class="font-semibold text-white truncate group-hover:text-primary-400 transition-colors" title="${playlist.name}">
                    ${playlist.name}
                </h3>
                <p class="text-sm text-gray-400 truncate mt-1" title="${playlist.description || ''}">
                    ${playlist.description || 'Aucune description'}
                </p>
                <p class="text-xs text-gray-500 mt-1">
                    <i class="fas fa-music mr-1"></i>
                    ${playlist.track_count || 0} piste${(playlist.track_count || 0) !== 1 ? 's' : ''}
                </p>
            </div>

            <!-- Actions -->
            <div class="flex items-center gap-2 opacity-0 group-hover:opacity-100 transition-all">
                <button onclick="event.stopPropagation(); showPlaylistDetails('${playlist.id}')"
                        class="flex-1 px-3 py-2 text-sm bg-gray-700 hover:bg-gray-600 rounded-lg transition-all flex items-center justify-center gap-2"
                        title="Voir les détails">
                    <i class="fas fa-eye"></i>
                    <span>Voir</span>
                </button>
                <button onclick="event.stopPropagation(); deletePlaylistWithConfirm('${playlist.id}', '${playlist.name}')"
                        class="px-3 py-2 text-sm bg-red-600/20 hover:bg-red-600/40 text-red-400 rounded-lg transition-all"
                        title="Supprimer la playlist"
                        aria-label="Supprimer ${playlist.name}">
                    <i class="fas fa-trash"></i>
                </button>
            </div>
        </div>
        `;
    }).join('');

    console.log('[renderPlaylists] ✓ All playlists rendered');
    console.log('='.repeat(80));
    console.log('[renderPlaylists] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[renderPlaylists] ║           RENDERPLAYLISTS FUNCTION COMPLETED                           ║');
    console.log('[renderPlaylists] ╚════════════════════════════════════════════════════════════════════════╝');
// ============================================
// LIKED TRACKS FUNCTIONALITY
// ============================================

/**
 * Load liked tracks from the API
 * @async
 * @returns {Promise<void>}
 */
window.loadLikedTracks = async function() {
    console.log('='.repeat(80));
    console.log('[loadLikedTracks] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[loadLikedTracks] ║           LOADLIKEDTRACKS FUNCTION STARTED                              ║');
    console.log('[loadLikedTracks] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[loadLikedTracks] Timestamp:', new Date().toISOString());
    console.log('='.repeat(80));

    const container = document.getElementById('liked-tracks');
    if (!container) {
        console.error('[loadLikedTracks] ✗ Container liked-tracks not found');
        return;
    }
    console.log('[loadLikedTracks] ✓ Container found:', container.id);

    try {
        console.log('[loadLikedTracks] → Getting token from localStorage...');
        const token = localStorage.getItem('token');
        if (!token) {
            console.error('[loadLikedTracks] ✗ No token found in localStorage');
            throw new Error('No authentication token');
        }
        console.log('[loadLikedTracks] ✓ Token found');

        console.log('[loadLikedTracks] → Fetching liked tracks from API...');
        console.log('[loadLikedTracks] → Endpoint: GET /api/v1/library/liked-tracks');

        const response = await fetch('/api/v1/library/liked-tracks', {
            headers: {
                'Authorization': `Bearer ${token}`
            }
        });

        console.log('[loadLikedTracks] → Response status:', response.status);
        console.log('[loadLikedTracks] → Response ok:', response.ok);

        if (response.ok) {
            const likedTracks = await response.json();
            console.log('[loadLikedTracks] ✓ Liked tracks loaded:', likedTracks.length, 'tracks');

            // Update AppState.likedTracks Set
            console.log('[loadLikedTracks] → Updating AppState.likedTracks Set...');
            AppState.likedTracks.clear();
            likedTracks.forEach(track => {
                const trackId = track.youtube_id || track.id;
                AppState.likedTracks.add(String(trackId));
                console.log('[loadLikedTracks]   ✓ Added to Set:', trackId);
            });
            console.log('[loadLikedTracks] ✓ AppState.likedTracks updated:', AppState.likedTracks.size, 'tracks');

            // Render liked tracks UI
            console.log('[loadLikedTracks] → Rendering liked tracks UI...');
            updateLikedTracksUI(likedTracks);
            console.log('[loadLikedTracks] ✓ Liked tracks UI rendered');
        } else if (response.status === 401) {
            console.warn('[loadLikedTracks] ⚠ Session expired - skipping liked tracks load');
            return;
        } else {
            console.error('[loadLikedTracks] ✗ Failed to load liked tracks');
            console.error('[loadLikedTracks] → Status:', response.status);
            console.error('[loadLikedTracks] → Status text:', response.statusText);
            throw new Error('Failed to load liked tracks');
        }
    } catch (error) {
        console.error('[loadLikedTracks] ✗ Error loading liked tracks:', error);
        console.error('[loadLikedTracks] → Error name:', error.name);
        console.error('[loadLikedTracks] → Error message:', error.message);
        console.error('[loadLikedTracks] → Error stack:', error.stack);

        if (container) {
            container.innerHTML = `
                <div class="text-center py-8">
                    <i class="fas fa-exclamation-circle text-red-400 text-4xl mb-3"></i>
                    <p class="text-gray-400">Erreur de chargement des titres likés</p>
                    <p class="text-gray-500 text-sm mt-2">${error.message}</p>
                </div>
            `;
        }
    }

    console.log('='.repeat(80));
    console.log('[loadLikedTracks] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[loadLikedTracks] ║           LOADLIKEDTRACKS FUNCTION COMPLETED                            ║');
    console.log('[loadLikedTracks] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('='.repeat(80));
}

/**
 * Update the liked tracks UI
 * @param {Array} likedTracks - Array of liked track objects
 */
window.updateLikedTracksUI = function(likedTracks) {
    console.log('='.repeat(80));
    console.log('[updateLikedTracksUI] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[updateLikedTracksUI] ║           UPDATELIKEDTRACKSUI FUNCTION CALLED                         ║');
    console.log('[updateLikedTracksUI] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[updateLikedTracksUI] Timestamp:', new Date().toISOString());
    console.log('[updateLikedTracksUI] Liked tracks count:', likedTracks.length);
    console.log('='.repeat(80));

    const container = document.getElementById('liked-tracks');
    if (!container) {
        console.error('[updateLikedTracksUI] ✗ Container liked-tracks not found');
        return;
    }
    console.log('[updateLikedTracksUI] ✓ Container found');

    if (!likedTracks || likedTracks.length === 0) {
        console.log('[updateLikedTracksUI] → No liked tracks to display');
        container.innerHTML = `
            <div class="text-center py-12">
                <i class="far fa-heart text-gray-600 text-5xl mb-4"></i>
                <p class="text-gray-400">Aucun titre liké pour le moment</p>
                <p class="text-gray-500 text-sm mt-2">Cliquez sur le cœur pour ajouter des titres</p>
            </div>
        `;
        console.log('[updateLikedTracksUI] ✓ Empty state rendered');
        return;
    }

    console.log('[updateLikedTracksUI] → Rendering liked tracks...');
    container.innerHTML = likedTracks.map(track => {
        // Handle nested track object from API
        const trackInfo = track.track || track;
        const trackId = trackInfo.youtube_id || trackInfo.id;
        const title = trackInfo.title || 'Titre inconnu';
        const artist = trackInfo.artist ? trackInfo.artist.name : (trackInfo.artist_name || 'Artiste inconnu');
        const cover = trackInfo.image_url || trackInfo.cover || '/static/img/default-cover.png';
        const isYoutube = !!trackInfo.youtube_id;

        console.log('[updateLikedTracksUI]   → Rendering track:', {
            id: trackId,
            title: title,
            artist: artist,
            isYoutube: isYoutube,
            hasTrack: !!track.track
        });

        return `
            <div class="glass-card rounded-xl p-3 sm:p-4 hover:bg-gray-800/50 transition-all cursor-pointer group"
                 data-id="${trackId}"
                 data-title="${encodeURIComponent(title)}"
                 data-artist="${encodeURIComponent(artist)}"
                 data-cover="${encodeURIComponent(cover)}"
                 role="listitem"
                 tabindex="0"
                 aria-label="${title} de ${artist}">
                <div class="flex items-center gap-3 sm:gap-4">
                    <!-- Cover -->
                    <div class="relative flex-shrink-0">
                        <img src="${cover}"
                             alt="${title}"
                             class="w-12 h-12 sm:w-16 sm:h-16 rounded-lg object-cover bg-gray-800">
                        <button class="absolute inset-0 flex items-center justify-center bg-black/50 opacity-0 group-hover:opacity-100 transition-opacity rounded-lg"
                                onclick="event.stopPropagation(); playTrack('${trackId}', ${isYoutube})"
                                aria-label="Lire ${title}">
                            <i class="fas fa-play text-white text-lg"></i>
                        </button>
                    </div>

                    <!-- Track Info -->
                    <div class="flex-1 min-w-0">
                        <h3 class="font-medium text-white truncate text-sm sm:text-base">${title}</h3>
                        <p class="text-gray-400 text-xs sm:text-sm truncate">${artist}</p>
                    </div>

                    <!-- Actions -->
                    <div class="flex items-center gap-2 flex-shrink-0">
                        <button class="p-2 text-accent-400 hover:bg-gray-700/50 rounded-lg transition-all"
                                onclick="event.stopPropagation(); toggleLikeTrack('${trackId}')"
                                aria-label="Retirer des favoris"
                                aria-pressed="true">
                            <i class="fas fa-heart"></i>
                        </button>
                    </div>
                </div>
            </div>
        `;
    }).join('');

    console.log('[updateLikedTracksUI] ✓ Liked tracks rendered:', likedTracks.length, 'tracks');
    console.log('='.repeat(80));
}

/**
 * Toggle like status for a track (called from UI)
 * @param {string} trackId - The track ID to toggle
 * @async
 */
window.toggleLikeTrack = async function(trackId) {
    console.log('='.repeat(80));
    console.log('[toggleLikeTrack] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[toggleLikeTrack] ║           TOGGLELIKETRACK FUNCTION CALLED                              ║');
    console.log('[toggleLikeTrack] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[toggleLikeTrack] Timestamp:', new Date().toISOString());
    console.log('[toggleLikeTrack] Track ID:', trackId);
    console.log('='.repeat(80));

    const uuidRegex = /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i;
    let actualTrackId = trackId;

    // If not a UUID, try to create the track first
    if (!uuidRegex.test(trackId)) {
        console.log('[toggleLikeTrack] → Track ID is not a UUID, attempting to create track from YouTube ID');

        // Get track info from DOM element
        const trackElement = document.querySelector(`[data-id="${trackId}"]`) ||
                             document.querySelector(`[data-youtube-id="${trackId}"]`);

        if (!trackElement) {
            console.error('[toggleLikeTrack] ✗ Track element not found in DOM');
            showToast('Impossible de trouver les informations de la piste', 'error');
            return;
        }

        const title = decodeURIComponent(trackElement.dataset.title || 'Unknown Track');
        const artist = decodeURIComponent(trackElement.dataset.artist || 'Unknown Artist');

        console.log('[toggleLikeTrack] → Creating track from YouTube...');
        console.log('[toggleLikeTrack]    YouTube ID:', trackId);
        console.log('[toggleLikeTrack]    Title:', title);
        console.log('[toggleLikeTrack]    Artist:', artist);

        showToast('Création de la piste en cours...', 'info');

        // Create the track in database
        actualTrackId = await createTrackFromYouTube(trackId, title, artist);

        if (!actualTrackId) {
            console.error('[toggleLikeTrack] ✗ Failed to create track');
            showToast('Erreur lors de la création de la piste', 'error');
            return;
        }

        console.log('[toggleLikeTrack] ✓ Track created with UUID:', actualTrackId);

        // Update the DOM element with the new UUID
        if (trackElement) {
            trackElement.setAttribute('data-id', actualTrackId);
            trackElement.setAttribute('data-uuid-created', 'true');
            console.log('[toggleLikeTrack] ✓ DOM element updated with UUID');
        }
    }

    const isLiked = AppState.likedTracks.has(String(actualTrackId));
    console.log('[toggleLikeTrack] Current like status:', isLiked);

    try {
        const token = localStorage.getItem('token');
        if (!token) {
            console.error('[toggleLikeTrack] ✗ No token found');
            showToast('Non authentifié', 'error');
            return;
        }
        console.log('[toggleLikeTrack] ✓ Token found');

        const url = `/api/v1/library/liked-tracks/${actualTrackId}`;
        console.log('[toggleLikeTrack] → API call:', isLiked ? `DELETE ${url}` : `POST ${url}`);

        const response = await fetch(url, {
            method: isLiked ? 'DELETE' : 'POST',
            headers: {
                'Authorization': `Bearer ${token}`
            }
        });

        console.log('[toggleLikeTrack] → Response status:', response.status);

        if (response.ok) {
            if (isLiked) {
                AppState.likedTracks.delete(String(actualTrackId));
                console.log('[toggleLikeTrack] ✓ Track removed from liked tracks');
                showToast('Retiré des titres likés', 'success');
            } else {
                AppState.likedTracks.add(String(actualTrackId));
                console.log('[toggleLikeTrack] ✓ Track added to liked tracks');
                showToast('Ajouté aux titres likés', 'success');
            }

            // Update UI
            console.log('[toggleLikeTrack] → Updating UI...');
            updateLikeButtonState(actualTrackId, !isLiked);

            // If on library page, reload liked tracks
            if (AppState.currentPage === 'library') {
                console.log('[toggleLikeTrack] → Reloading liked tracks...');
                await loadLikedTracks();
            }
        } else {
            console.error('[toggleLikeTrack] ✗ API call failed');
            const error = await response.json();
            console.error('[toggleLikeTrack] → Error:', error.detail);
            showToast(error.detail || 'Erreur lors de la modification', 'error');
        }
    } catch (error) {
        console.error('[toggleLikeTrack] ✗ Error:', error);
        showToast('Erreur de connexion', 'error');
    }

    console.log('='.repeat(80));
}

// ============================================
// LISTENING HISTORY FUNCTIONALITY
// ============================================

/**
 * Load listening history from the API
 * @async
 * @returns {Promise<void>}
 */
window.loadListeningHistory = async function() {
    console.log('='.repeat(80));
    console.log('[loadListeningHistory] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[loadListeningHistory] ║           LOADLISTENINGHISTORY FUNCTION STARTED                       ║');
    console.log('[loadListeningHistory] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[loadListeningHistory] Timestamp:', new Date().toISOString());
    console.log('='.repeat(80));

    const container = document.getElementById('listening-history');
    if (!container) {
        console.error('[loadListeningHistory] ✗ Container listening-history not found');
        return;
    }
    console.log('[loadListeningHistory] ✓ Container found');

    try {
        console.log('[loadListeningHistory] → Getting token from localStorage...');
        const token = localStorage.getItem('token');
        if (!token) {
            console.error('[loadListeningHistory] ✗ No token found in localStorage');
            throw new Error('No authentication token');
        }
        console.log('[loadListeningHistory] ✓ Token found');

        console.log('[loadListeningHistory] → Fetching listening history from API...');
        console.log('[loadListeningHistory] → Endpoint: GET /api/v1/library/history');

        const response = await fetch('/api/v1/library/history', {
            headers: {
                'Authorization': `Bearer ${token}`
            }
        });

        console.log('[loadListeningHistory] → Response status:', response.status);
        console.log('[loadListeningHistory] → Response ok:', response.ok);

        if (response.ok) {
            const history = await response.json();
            console.log('[loadListeningHistory] ✓ History loaded:', history.length, 'entries');

            // Render history UI
            console.log('[loadListeningHistory] → Rendering listening history UI...');
            renderListeningHistory(history);
            console.log('[loadListeningHistory] ✓ Listening history UI rendered');
        } else if (response.status === 401) {
            console.warn('[loadListeningHistory] ⚠ Session expired - skipping history load');
            return;
        } else {
            console.error('[loadListeningHistory] ✗ Failed to load history');
            console.error('[loadListeningHistory] → Status:', response.status);
            throw new Error('Failed to load listening history');
        }
    } catch (error) {
        console.error('[loadListeningHistory] ✗ Error loading history:', error);
        console.error('[loadListeningHistory] → Error name:', error.name);
        console.error('[loadListeningHistory] → Error message:', error.message);

        if (container) {
            container.innerHTML = `
                <div class="text-center py-8">
                    <i class="fas fa-exclamation-circle text-red-400 text-4xl mb-3"></i>
                    <p class="text-gray-400">Erreur de chargement de l'historique</p>
                    <p class="text-gray-500 text-sm mt-2">${error.message}</p>
                </div>
            `;
        }
    }

    console.log('='.repeat(80));
    console.log('[loadListeningHistory] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[loadListeningHistory] ║           LOADLISTENINGHISTORY FUNCTION COMPLETED                     ║');
    console.log('[loadListeningHistory] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('='.repeat(80));
}

/**
 * Render listening history grouped by date
 * @param {Array} history - Array of history entries
 */
window.renderListeningHistory = function(history) {
    console.log('='.repeat(80));
    console.log('[renderListeningHistory] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[renderListeningHistory] ║           RENDERLISTENINGHISTORY FUNCTION CALLED                     ║');
    console.log('[renderListeningHistory] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[renderListeningHistory] Timestamp:', new Date().toISOString());
    console.log('[renderListeningHistory] History entries:', history.length);
    console.log('='.repeat(80));

    const container = document.getElementById('listening-history');
    if (!container) {
        console.error('[renderListeningHistory] ✗ Container listening-history not found');
        return;
    }
    console.log('[renderListeningHistory] ✓ Container found');

    if (!history || history.length === 0) {
        console.log('[renderListeningHistory] → No history to display');
        container.innerHTML = `
            <div class="text-center py-12">
                <i class="fas fa-history text-gray-600 text-5xl mb-4"></i>
                <p class="text-gray-400">Aucun historique d'écoute</p>
                <p class="text-gray-500 text-sm mt-2">Vos écoutes récentes apparaîtront ici</p>
            </div>
        `;
        console.log('[renderListeningHistory] ✓ Empty state rendered');
        return;
    }

    console.log('[renderListeningHistory] → Grouping history by date...');
    // Group history by date
    const groupedHistory = {};
    history.forEach(entry => {
        const date = new Date(entry.played_at);
        const dateKey = formatDateKey(date);
        const displayDate = formatDateDisplay(date);

        if (!groupedHistory[dateKey]) {
            groupedHistory[dateKey] = {
                display: displayDate,
                entries: []
            };
        }
        groupedHistory[dateKey].entries.push(entry);
    });

    console.log('[renderListeningHistory] ✓ History grouped into', Object.keys(groupedHistory).length, 'dates');

    // Sort dates (most recent first)
    const sortedDates = Object.keys(groupedHistory).sort((a, b) => new Date(b) - new Date(a));
    console.log('[renderListeningHistory] → Dates sorted:', sortedDates);

    console.log('[renderListeningHistory] → Rendering history...');

    // Build HTML
    let html = '';
    sortedDates.forEach(dateKey => {
        const group = groupedHistory[dateKey];
        console.log('[renderListeningHistory]   → Rendering date:', group.display, 'with', group.entries.length, 'entries');

        html += `
            <div class="mb-6">
                <h3 class="text-sm font-semibold text-gray-400 mb-3 sticky top-0 bg-gray-900/95 backdrop-blur-sm py-2 border-b border-gray-800">
                    ${group.display}
                </h3>
                <div class="space-y-2">
        `;

        group.entries.forEach(entry => {
            const track = entry.track;
            const trackId = track.youtube_id || track.id;
            const title = track.title || 'Titre inconnu';
            const artist = track.artist_name || track.artist || 'Artiste inconnu';
            const cover = track.image_url || track.cover || '/static/img/default-cover.png';
            const isYoutube = !!track.youtube_id;
            const playedAt = new Date(entry.played_at);
            const timeStr = formatTimeAgo(playedAt);

            html += `
                <div class="glass-card rounded-xl p-3 sm:p-4 hover:bg-gray-800/50 transition-all cursor-pointer group"
                     data-id="${trackId}"
                     data-title="${encodeURIComponent(title)}"
                     data-artist="${encodeURIComponent(artist)}"
                     data-cover="${encodeURIComponent(cover)}"
                     role="listitem"
                     tabindex="0"
                     aria-label="${title} de ${artist}, écouté ${timeStr}">
                    <div class="flex items-center gap-3 sm:gap-4">
                        <!-- Cover -->
                        <div class="relative flex-shrink-0">
                            <img src="${cover}"
                                 alt="${title}"
                                 class="w-12 h-12 sm:w-16 sm:h-16 rounded-lg object-cover bg-gray-800">
                            <button class="absolute inset-0 flex items-center justify-center bg-black/50 opacity-0 group-hover:opacity-100 transition-opacity rounded-lg"
                                    onclick="event.stopPropagation(); playTrack('${trackId}', ${isYoutube})"
                                    aria-label="Lire ${title}">
                                <i class="fas fa-play text-white text-lg"></i>
                            </button>
                        </div>

                        <!-- Track Info -->
                        <div class="flex-1 min-w-0">
                            <h3 class="font-medium text-white truncate text-sm sm:text-base">${title}</h3>
                            <p class="text-gray-400 text-xs sm:text-sm truncate">${artist}</p>
                        </div>

                        <!-- Time -->
                        <div class="text-xs text-gray-500 flex-shrink-0">
                            ${timeStr}
                        </div>
                    </div>
                </div>
            `;
        });

        html += `
                </div>
            </div>
        `;
    });

    container.innerHTML = html;
    console.log('[renderListeningHistory] ✓ History rendered:', history.length, 'entries across', sortedDates.length, 'days');
    console.log('='.repeat(80));
}

// ============================================
// UTILITY FUNCTIONS FOR HISTORY
// ============================================

/**
 * Format date to key for grouping (YYYY-MM-DD)
 * @param {Date} date - The date to format
 * @returns {string} Formatted date key
 */
window.formatDateKey = function(date) {
    const year = date.getFullYear();
    const month = String(date.getMonth() + 1).padStart(2, '0');
    const day = String(date.getDate()).padStart(2, '0');
    return `${year}-${month}-${day}`;
}

/**
 * Format date for display
 * @param {Date} date - The date to format
 * @returns {string} Formatted date string
 */
window.formatDateDisplay = function(date) {
    const today = new Date();
    const yesterday = new Date(today);
    yesterday.setDate(yesterday.getDate() - 1);

    // Reset time parts for accurate comparison
    today.setHours(0, 0, 0, 0);
    yesterday.setHours(0, 0, 0, 0);
    const compareDate = new Date(date);
    compareDate.setHours(0, 0, 0, 0);

    if (compareDate.getTime() === today.getTime()) {
        return "Aujourd'hui";
    } else if (compareDate.getTime() === yesterday.getTime()) {
        return 'Hier';
    } else {
        const options = { weekday: 'long', year: 'numeric', month: 'long', day: 'numeric' };
        return date.toLocaleDateString('fr-FR', options);
    }
}

/**
 * Format time ago for display
 * @param {Date} date - The date to format
 * @returns {string} Time ago string
 */
window.formatTimeAgo = function(date) {
    const now = new Date();
    const seconds = Math.floor((now - date) / 1000);

    if (seconds < 60) {
        return "À l'instant";
    }

    const minutes = Math.floor(seconds / 60);
    if (minutes < 60) {
        return `Il y a ${minutes} min`;
    }

    const hours = Math.floor(minutes / 60);
    if (hours < 24) {
        return `Il y a ${hours}h`;
    }

    const days = Math.floor(hours / 24);
    if (days === 1) {
        return 'Hier';
    } else if (days < 7) {
        return `Il y a ${days} j`;
    }

    return date.toLocaleDateString('fr-FR', { day: 'numeric', month: 'short' });
}

// ============================================
// SEARCH FUNCTIONALITY
// ============================================

    console.log('='.repeat(80));
}

window.loadTrendingTracks = async function() {
    const container = document.getElementById('trending-tracks');
    if (!container) {
        console.error('Container trending-tracks not found');
        return;
    }

    try {
        console.log('[loadTrendingTracks] Starting...');
        const token = localStorage.getItem('token');
        console.log('[loadTrendingTracks] Token:', token ? token.substring(0, 20) + '...' : 'none');

        const response = await fetch('/api/v1/music/trending', {
            headers: {
                'Authorization': `Bearer ${token}`
            }
        });

        console.log('[loadTrendingTracks] Response status:', response.status);

        if (response.ok) {
            const tracks = await response.json();
            console.log('[loadTrendingTracks] Tracks received:', tracks.length, tracks);
            renderTracks(tracks, container);
        } else {
            console.error('[loadTrendingTracks] Response not OK:', response.status);
            container.innerHTML = '<p style="color: var(--text-secondary);">Erreur de chargement</p>';
        }
    } catch (error) {
        console.error('[loadTrendingTracks] Failed to load trending tracks:', error);
        container.innerHTML = '<p style="color: var(--text-secondary);">Erreur de chargement: ' + error.message + '</p>';
    }
}

// ============================================
// SEARCH FUNCTIONALITY
// ============================================

// Quick search from home page
async function handleQuickSearch() {
    const searchInput = document.getElementById('quick-search');
    if (!searchInput) return;

    const query = searchInput.value.trim();
    if (!query) {
        showToast('Veuillez entrer une recherche', 'error');
        return;
    }

    // Show loading state
    const container = document.getElementById('trending-tracks');
    if (container) {
        container.innerHTML = `
            <div class="loading">
                <div class="spinner" style="width: 40px; height: 40px; margin: 0 auto 1rem;"></div>
                <p>Recherche en cours...</p>
            </div>
        `;
    }

    await performSearch(query, container);
}

// Main search from search page
async function handleMainSearch() {
    console.log('='.repeat(80));
    console.log('[handleMainSearch] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[handleMainSearch] ║           HANDLEMAINSEARCH FUNCTION STARTED                            ║');
    console.log('[handleMainSearch] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[handleMainSearch] Timestamp:', new Date().toISOString());
    console.log('='.repeat(80));

    console.log('[handleMainSearch] → Getting search input element...');
    const searchInput = document.getElementById('search-input');
    if (!searchInput) {
        console.error('[handleMainSearch] ✗ Search input element NOT found!');
        return;
    }
    console.log('[handleMainSearch] ✓ Search input element found');

    console.log('[handleMainSearch] → Getting search query...');
    const query = searchInput.value.trim();
    console.log('[handleMainSearch]   Raw value:', searchInput.value);
    console.log('[handleMainSearch]   Trimmed query:', query);

    if (!query) {
        console.warn('[handleMainSearch] ✗ Empty query, showing error toast');
        showToast('Veuillez entrer une recherche', 'error');
        return;
    }
    console.log('[handleMainSearch] ✓ Query is valid');

    // Show loading state
    console.log('[handleMainSearch] → Getting search results container...');
    const container = document.getElementById('search-results');
    if (container) {
        console.log('[handleMainSearch] ✓ Container found, showing loading state');
        container.innerHTML = `
            <div class="loading">
                <div class="spinner" style="width: 60px; height: 60px; margin: 0 auto 1rem;"></div>
                <p style="font-size: 1.1rem; color: var(--text-primary);">Recherche de "${query}" en cours...</p>
                <p style="font-size: 0.9rem; color: var(--text-secondary); margin-top: 0.5rem;">Cela peut prendre quelques secondes</p>
            </div>
        `;
    } else {
        console.error('[handleMainSearch] ✗ Search results container NOT found!');
    }

    console.log('[handleMainSearch] → Calling performSearch...');
    await performSearch(query, container);
    console.log('[handleMainSearch] ✓ performSearch completed');

    console.log('='.repeat(80));
    console.log('[handleMainSearch] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[handleMainSearch] ║           HANDLEMAINSEARCH FUNCTION COMPLETED                           ║');
    console.log('[handleMainSearch] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('='.repeat(80));
}

// Perform the actual search
window.performSearch = async function(query, container) {
    console.log('='.repeat(80));
    console.log('[performSearch] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[performSearch] ║           PERFORMSEARCH FUNCTION STARTED                               ║');
    console.log('[performSearch] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[performSearch] Timestamp:', new Date().toISOString());
    console.log('[performSearch] Query:', query);
    console.log('='.repeat(80));

    if (!container) {
        console.error('[performSearch] ✗ No container provided');
        return;
    }
    console.log('[performSearch] ✓ Container provided');

    try {
        console.log('[performSearch] → Getting auth token...');
        const token = localStorage.getItem('token');
        console.log('[performSearch]   Token present:', !!token);
        console.log('[performSearch]   Token length:', token ? token.length : 0);

        const searchUrl = `/api/v1/music/search?q=${encodeURIComponent(query)}`;
        console.log('[performSearch] → Fetching from API...');
        console.log('[performSearch]   URL:', searchUrl);

        const response = await fetch(searchUrl, {
            headers: {
                'Authorization': `Bearer ${token}`
            }
        });

        console.log('[performSearch] → Response received');
        console.log('[performSearch]   Status:', response.status);
        console.log('[performSearch]   Status text:', response.statusText);
        console.log('[performSearch]   OK:', response.ok);

        if (response.ok) {
            console.log('[performSearch] → Parsing JSON response...');
            const results = await response.json();
            console.log('[performSearch] ✓ JSON parsed');
            console.log('[performSearch]   Full results:', results);

            const tracks = results.tracks || []; // Extract tracks array from response
            console.log('[performSearch] → Extracted tracks array');
            console.log('[performSearch]   Number of tracks:', tracks.length);
            console.log('[performSearch]   Tracks:', tracks);

            if (tracks.length === 0) {
                console.log('[performSearch] → No tracks found, showing empty state');
                container.innerHTML = `
                    <div style="text-align: center; padding: var(--space-2xl);">
                        <i class="fas fa-search" style="font-size: 3rem; color: var(--text-muted); margin-bottom: var(--space-md);"></i>
                        <p style="color: var(--text-secondary); font-size: 1.1rem;">Aucun résultat pour "${query}"</p>
                        <p style="color: var(--text-muted); font-size: 0.9rem; margin-top: var(--space-sm);">Essayez d'autres mots-clés</p>
                    </div>
                `;
                console.log('[performSearch] ✓ Empty state rendered');
            } else {
                console.log('[performSearch] → Tracks found, rendering results...');
                // Add results header
                container.innerHTML = `
                    <div style="margin-bottom: var(--space-lg); padding: var(--space-md); background: var(--bg-card); border-radius: var(--radius-md);">
                        <p style="color: var(--text-secondary); margin: 0;">
                            <i class="fas fa-check-circle" style="color: var(--success);"></i>
                            ${tracks.length} résultat${tracks.length > 1 ? 's' : ''} trouvé${tracks.length > 1 ? 's' : ''} pour "${query}"
                        </p>
                    </div>
                `;
                console.log('[performSearch] ✓ Results header rendered');

                const resultsContainer = document.createElement('div');
                resultsContainer.className = 'track-list';
                container.appendChild(resultsContainer);
                console.log('[performSearch] ✓ Results container created and appended');

                console.log('[performSearch] → Calling renderTracks...');
                renderTracks(tracks, resultsContainer);
                console.log('[performSearch] ✓ renderTracks completed');
            }
        } else {
            console.error('[performSearch] ✗ API response not OK');
            console.error('[performSearch]   Status:', response.status);
            console.error('[performSearch]   Status text:', response.statusText);
            container.innerHTML = `
                <div style="text-align: center; padding: var(--space-2xl);">
                    <i class="fas fa-exclamation-triangle" style="font-size: 3rem; color: var(--error); margin-bottom: var(--space-md);"></i>
                    <p style="color: var(--text-secondary);">Erreur lors de la recherche</p>
                    <button class="btn btn-primary" onclick="handleMainSearch()" style="margin-top: var(--space-md);">Réessayer</button>
                </div>
            `;
            console.log('[performSearch] ✗ Error state rendered');
        }
    } catch (error) {
        console.error('='.repeat(80));
        console.error('[performSearch] ╔════════════════════════════════════════════════════════════════════════╗');
        console.error('[performSearch] ║           PERFORMSEARCH FUNCTION FAILED                                 ║');
        console.error('[performSearch] ╚════════════════════════════════════════════════════════════════════════╝');
        console.error('[performSearch] Error name:', error.name);
        console.error('[performSearch] Error message:', error.message);
        console.error('[performSearch] Error stack:', error.stack);
        console.error('='.repeat(80));
        container.innerHTML = `
            <div style="text-align: center; padding: var(--space-2xl);">
                <i class="fas fa-wifi" style="font-size: 3rem; color: var(--error); margin-bottom: var(--space-md);"></i>
                <p style="color: var(--text-secondary);">Erreur de connexion</p>
                <p style="color: var(--text-muted); font-size: 0.9rem; margin-top: var(--space-sm);">Vérifiez votre connexion internet</p>
                <button class="btn btn-primary" onclick="handleMainSearch()" style="margin-top: var(--space-md);">Réessayer</button>
            </div>
        `;
        console.log('[performSearch] ✗ Connection error state rendered');
    }

    console.log('='.repeat(80));
    console.log('[performSearch] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[performSearch] ║           PERFORMSEARCH FUNCTION COMPLETED                               ║');
    console.log('[performSearch] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('='.repeat(80));
}

window.renderTracks = function(tracks, container) {
    console.log('='.repeat(80));
    console.log('[renderTracks] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[renderTracks] ║           RENDERTRACKS FUNCTION STARTED                                ║');
    console.log('[renderTracks] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[renderTracks] Timestamp:', new Date().toISOString());
    console.log('='.repeat(80));

    if (!container) {
        console.error('[renderTracks] ✗ ERROR: No container provided');
        return;
    }
    console.log('[renderTracks] ✓ Container provided');

    console.log('[renderTracks] → Number of tracks to render:', tracks.length);
    console.log('[renderTracks] Tracks array:', tracks);

    if (tracks.length === 0) {
        console.log('[renderTracks] → No tracks to render, showing "Aucun résultat"');
        container.innerHTML = '<p class="text-gray-400 text-center py-8">Aucun résultat</p>';
        console.log('[renderTracks] ✓ Empty state rendered');
        return;
    }

    console.log('[renderTracks] → Starting to map tracks to HTML...');
    container.innerHTML = tracks.map((track, index) => {
        // Get artist name - handle both nested object and flat structure
        const artistName = track.artist?.name || track.artist || track.artist_name || 'Artiste inconnu';

        // Use youtube_id to determine if this is a YouTube track
        const isYoutubeTrack = !!track.youtube_id;

        console.log('[renderTracks] ┌─────────────────────────────────────────────────────────────────');
        console.log('[renderTracks] │ Track #' + (index + 1) + ':');
        console.log('[renderTracks] │   - ID:', track.id);
        console.log('[renderTracks] │   - Title:', track.title);
        console.log('[renderTracks] │   - Artist:', artistName);
        console.log('[renderTracks] │   - YouTube ID:', track.youtube_id);
        console.log('[renderTracks] │   - Is YouTube Track:', isYoutubeTrack);
        console.log('[renderTracks] │   - Duration:', track.duration);
        console.log('[renderTracks] │   - Image URL:', track.image_url);
        console.log('[renderTracks] │   - Full track object:', track);
        console.log('[renderTracks] └─────────────────────────────────────────────────────────────────');

        // Encode data attributes for proper JSON storage
        console.log('[renderTracks] │ → Encoding data attributes...');
        const encodedTitle = encodeURIComponent(track.title || 'Unknown Track');
        const encodedArtist = encodeURIComponent(artistName);
        const encodedCover = encodeURIComponent(track.image_url || '/static/img/default-cover.png');

        console.log('[renderTracks] │   Encoded title:', encodedTitle);
        console.log('[renderTracks] │   Encoded artist:', encodedArtist);
        console.log('[renderTracks] │   Encoded cover:', encodedCover);
        console.log('[renderTracks] │ ✓ Data attributes encoded');

        console.log('[renderTracks] │ → Building HTML element...');

        return `
        <div class="glass-card rounded-xl p-4 hover:bg-gray-700/50 transition-all cursor-pointer group animate-fadeIn relative"
             data-id="${track.id}"
             data-is-youtube="${isYoutubeTrack}"
             data-youtube-id="${track.youtube_id || ''}"
             data-title="${encodedTitle}"
             data-artist="${encodedArtist}"
             data-cover="${encodedCover}"
             onclick="playTrack('${track.id}', ${isYoutubeTrack})">
            <div class="flex items-center gap-4">
                <!-- Cover -->
                <img src="${track.image_url || '/static/img/default-cover.png'}"
                     alt="${track.title}"
                     class="w-16 h-16 rounded-lg object-cover bg-gray-800 flex-shrink-0">

                <!-- Info -->
                <div class="flex-1 min-w-0">
                    <h3 class="font-semibold text-white truncate group-hover:text-primary-400 transition-colors">${track.title}</h3>
                    <p class="text-sm text-gray-400 truncate">${artistName}</p>
                </div>

                <!-- Duration -->
                <span class="text-sm text-gray-500 flex-shrink-0">
                    ${track.duration ? formatTime(track.duration) : '--:--'}
                </span>

                <!-- Actions -->
                <div class="flex items-center gap-2">
                    <!-- Add to Playlist Button -->
                    <div class="relative">
                        <button onclick="event.stopPropagation(); toggleAddToPlaylistDropdown(event, '${track.id}')"
                                class="w-10 h-10 flex items-center justify-center bg-gray-700 hover:bg-gray-600 rounded-full opacity-0 group-hover:opacity-100 transition-all transform hover:scale-110"
                                aria-label="Ajouter à la playlist">
                            <i class="fas fa-plus text-sm text-white"></i>
                        </button>
                        <div id="playlist-dropdown-${track.id}" class="hidden fixed glass-card rounded-xl shadow-xl border border-gray-700 z-[9999] animate-fadeIn" style="min-width: 14rem;">
                            <div class="p-2 border-b border-gray-700">
                                <p class="text-xs font-semibold text-gray-400 px-2 py-1">Ajouter à la playlist</p>
                            </div>
                            <div id="playlist-options-${track.id}" class="max-h-48 overflow-y-auto p-1">
                                <!-- Playlist options will be dynamically inserted here -->
                            </div>
                            <div class="p-2 border-t border-gray-700">
                                <button onclick="event.stopPropagation(); createNewPlaylistFromTrack('${track.id}')"
                                        class="w-full px-3 py-2 text-left text-sm text-primary-400 hover:bg-gray-700/50 rounded-lg transition-all flex items-center gap-2">
                                    <i class="fas fa-plus"></i>
                                    Créer une playlist
                                </button>
                            </div>
                        </div>
                    </div>

                    <!-- Play Button -->
                    <button onclick="event.stopPropagation(); playTrack('${track.id}', ${isYoutubeTrack})"
                            class="w-10 h-10 flex items-center justify-center bg-primary-600 hover:bg-primary-500 rounded-full opacity-0 group-hover:opacity-100 transition-all transform hover:scale-110">
                        <i class="fas fa-play text-sm text-white"></i>
                    </button>
                </div>
            </div>
        </div>
        `;
    }).join('');

    console.log('[renderTracks] ✓ All tracks rendered to HTML');
    console.log('[renderTracks] → Container innerHTML length:', container.innerHTML.length);
    console.log('='.repeat(80));
    console.log('[renderTracks] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[renderTracks] ║           RENDERTRACKS FUNCTION COMPLETED                               ║');
    console.log('[renderTracks] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('='.repeat(80));
}

// Global function to play a track
// trackId: either database UUID or youtube_id
// isYoutubeTrack: boolean indicating if this is a YouTube track (default: false)
// skipQueuePositionUpdate: boolean to prevent updating queue position (for auto-advance)
window.playTrack = async function(trackId, isYoutubeTrack = false, skipQueuePositionUpdate = false) {
    console.log('='.repeat(80));
    console.log('[playTrack] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[playTrack] ║           STARTING PLAYTRACK FUNCTION                                  ║');
    console.log('[playTrack] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[playTrack] Timestamp:', new Date().toISOString());
    console.log('[playTrack] Parameters received:', {
        trackId: trackId,
        trackIdType: typeof trackId,
        isYoutubeTrack: isYoutubeTrack,
        isYoutubeTrackType: typeof isYoutubeTrack
    });
    console.log('='.repeat(80));

    try {
        console.log('[playTrack] ✓ Function started successfully');

        const token = localStorage.getItem('token');
        console.log('[playTrack] ✓ Token retrieved:', {
            hasToken: !!token,
            tokenLength: token ? token.length : 0,
            tokenPreview: token ? token.substring(0, 20) + '...' : 'none'
        });

        console.log('[playTrack] → Showing loading toast...');
        showToast('Chargement de la piste...', 'info');

        let track;
        let streamUrl;
        console.log('[playTrack] ✓ Variables initialized (track, streamUrl)');

        console.log('[playTrack] ├─ Checking track type...');
        console.log('[playTrack] │  isYoutubeTrack:', isYoutubeTrack);

        if (isYoutubeTrack) {
            console.log('[playTrack] │  → This is a YouTube track');
            console.log('[playTrack] │  → Building stream URL...');

            // This is a YouTube track - use the stream endpoint directly
            streamUrl = `/api/v1/music/youtube/${trackId}/stream`;
            console.log('[playTrack] │  ✓ Stream URL built:', streamUrl);

            console.log('[playTrack] │  → Searching for track element in DOM...');
            console.log('[playTrack] │  → Selector:', `[data-id="${trackId}"]`);

            // Get track info from the clicked element's data attributes
            const trackElement = document.querySelector(`[data-id="${trackId}"]`);

            if (trackElement) {
                console.log('[playTrack] │  ✓ Track element found!');
                console.log('[playTrack] │  → Reading data attributes...');

                console.log('[playTrack] │  → Raw dataset.title:', trackElement.dataset.title);
                console.log('[playTrack] │  → Raw dataset.artist:', trackElement.dataset.artist);
                console.log('[playTrack] │  → Raw dataset.cover:', trackElement.dataset.cover);

                const title = decodeURIComponent(trackElement.dataset.title || 'Unknown Track');
                const artist = decodeURIComponent(trackElement.dataset.artist || 'Unknown Artist');
                const cover = decodeURIComponent(trackElement.dataset.cover || '/static/img/default-cover.png');

                console.log('[playTrack] │  ✓ Data decoded:');
                console.log('[playTrack] │     - title:', title);
                console.log('[playTrack] │     - artist:', artist);
                console.log('[playTrack] │     - cover:', cover);

                track = {
                    title: title,
                    artist_name: artist,
                    image_url: cover,
                    youtube_id: trackId
                };

                console.log('[playTrack] │  ✓ Track object created:', track);
            } else {
                console.error('[playTrack] │  ✗ Track element NOT found in DOM!');
                console.error('[playTrack] │  → Elements with data-id attribute:');
                document.querySelectorAll('[data-id]').forEach(el => {
                    console.error('[playTrack] │     -', el.dataset.id);
                });
                throw new Error('Track element not found');
            }
        } else {
            console.log('[playTrack] │  → This is a database track');
            console.log('[playTrack] │  → Fetching from API...');
            console.log('[playTrack] │  → Endpoint:', `/api/v1/music/${trackId}`);

            // This is a database track - fetch from API
            const response = await fetch(`/api/v1/music/${trackId}`, {
                headers: {
                    'Authorization': `Bearer ${token}`
                }
            });

            console.log('[playTrack] │  → API Response status:', response.status);
            console.log('[playTrack] │  → API Response ok:', response.ok);

            if (response.ok) {
                track = await response.json();

                // Check if this is a YouTube track and use stream endpoint
                if (track.youtube_id) {
                    streamUrl = `/api/v1/music/youtube/${track.youtube_id}/stream`;
                    console.log('[playTrack] │  ✓ YouTube track detected, using stream endpoint');
                } else {
                    streamUrl = track.audio_url || track.stream_url;
                    console.log('[playTrack] │  ✓ Database track with direct audio URL');
                }

                console.log('[playTrack] │  ✓ Track loaded from database:', track);
                console.log('[playTrack] │  → Stream URL:', streamUrl);
            } else {
                console.error('[playTrack] │  ✗ Failed to load track from database');
                console.error('[playTrack] │  → Status:', response.status);
                console.error('[playTrack] │  → Status text:', response.statusText);
                showToast('Erreur lors du chargement de la piste', 'error');
                return;
            }
        }

        console.log('[playTrack] ├─ Setting up audio player...');

        // Update player and play
        if (DOM.audioPlayer) {
            console.log('[playTrack] │  ✓ Audio player element found');
            console.log('[playTrack] │  → Setting audio src...');
            console.log('[playTrack] │     Stream URL (truncated):', streamUrl ? streamUrl.substring(0, 100) + '...' : 'none');

            DOM.audioPlayer.src = streamUrl;
            console.log('[playTrack] │  ✓ Audio src set');

            // Add error handler for audio element
            console.log('[playTrack] │  → Setting up error handler...');
            DOM.audioPlayer.onerror = function(e) {
                console.error('[playTrack] Audio error:', e);
                console.error('[playTrack] Audio error code:', DOM.audioPlayer.error);
                console.error('[playTrack] Audio error message:', DOM.audioPlayer.error?.message);
                showToast('Erreur de lecture: format non supporté', 'error');
            };

            console.log('[playTrack] │  → Setting up metadata loaded handler...');
            DOM.audioPlayer.onloadedmetadata = function() {
                console.log('[playTrack] ✓ Audio metadata loaded');
                console.log('[playTrack]    Duration:', DOM.audioPlayer.duration);
                console.log('[playTrack]    ReadyState:', DOM.audioPlayer.readyState);
            };

            console.log('[playTrack] │  → Attempting to play audio...');
            try {
                await DOM.audioPlayer.play();
                console.log('[playTrack] │  ✓ Audio.play() succeeded');
                updatePlayButton(true);
                console.log('[playTrack] │  ✓ Play button updated');
            } catch (playError) {
                console.error('[playTrack] │  ✗ Audio.play() failed:', playError);
                console.error('[playTrack] │     Error name:', playError.name);
                console.error('[playTrack] │     Error message:', playError.message);
                showToast('Erreur lors de la lecture', 'error');
            }
        } else {
            console.error('[playTrack] │  ✗ Audio player element NOT found!');
        }

        console.log('[playTrack] ├─ Updating player UI...');

        // Update mobile player
        console.log('[playTrack] │  → Updating mobile player elements...');
        if (DOM.playerTitle) {
            DOM.playerTitle.textContent = track.title;
            console.log('[playTrack] │     ✓ playerTitle updated:', track.title);
        } else {
            console.warn('[playTrack] │     ✗ playerTitle element not found');
        }

        if (DOM.playerArtist) {
            DOM.playerArtist.textContent = track.artist_name || track.artist || 'Artiste inconnu';
            console.log('[playTrack] │     ✓ playerArtist updated:', track.artist_name || track.artist || 'Artiste inconnu');
        } else {
            console.warn('[playTrack] │     ✗ playerArtist element not found');
        }

        if (DOM.playerCover) {
            DOM.playerCover.src = track.image_url || track.cover || '/static/img/default-cover.png';
            console.log('[playTrack] │     ✓ playerCover updated');
        } else {
            console.warn('[playTrack] │     ✗ playerCover element not found');
        }

        // Update desktop player
        console.log('[playTrack] │  → Updating desktop player elements...');
        if (DOM.playerTitleDesktop) {
            DOM.playerTitleDesktop.textContent = track.title;
            console.log('[playTrack] │     ✓ playerTitleDesktop updated:', track.title);
        } else {
            console.warn('[playTrack] │     ✗ playerTitleDesktop element not found');
        }

        if (DOM.playerArtistDesktop) {
            DOM.playerArtistDesktop.textContent = track.artist_name || track.artist || 'Artiste inconnu';
            console.log('[playTrack] │     ✓ playerArtistDesktop updated:', track.artist_name || track.artist || 'Artiste inconnu');
        } else {
            console.warn('[playTrack] │     ✗ playerArtistDesktop element not found');
        }

        if (DOM.playerCoverDesktop) {
            DOM.playerCoverDesktop.src = track.image_url || track.cover || '/static/img/default-cover.png';
            console.log('[playTrack] │     ✓ playerCoverDesktop updated');
        } else {
            console.warn('[playTrack] │     ✗ playerCoverDesktop element not found');
        }

        // Update like buttons dataset
        console.log('[playTrack] │  → Updating like buttons dataset...');
        if (DOM.likeBtn) {
            DOM.likeBtn.dataset.trackId = trackId;
            console.log('[playTrack] │     ✓ likeBtn.dataset.trackId updated:', trackId);
        } else {
            console.warn('[playTrack] │     ✗ likeBtn element not found');
        }

        if (DOM.mobileLikeBtn) {
            DOM.mobileLikeBtn.dataset.trackId = trackId;
            console.log('[playTrack] │     ✓ mobileLikeBtn.dataset.trackId updated:', trackId);
        } else {
            console.warn('[playTrack] │     ✗ mobileLikeBtn element not found');
        }

        // Update like button state based on whether track is liked
        console.log('[playTrack] │  → Checking if track is liked...');
        const isLiked = AppState.likedTracks.has(trackId);
        console.log('[playTrack] │     Track liked:', isLiked);
        console.log('[playTrack] │     Liked tracks count:', AppState.likedTracks.size);

        updateLikeButtonState(trackId, isLiked);
        console.log('[playTrack] │  ✓ Like button state updated');

        console.log('[playTrack] ├─ Updating AppState...');
        AppState.currentTrack = track;
        console.log('[playTrack] │  ✓ AppState.currentTrack updated');

        // Add to queue if not already present
        // Skip queue position update if called from playNext() to avoid overriding the position
        if (!skipQueuePositionUpdate) {
            console.log('[playTrack] ├─ Checking if track should be added to queue...');
            const trackIndexInQueue = AppState.queue.findIndex(t =>
                (t.youtube_id && t.youtube_id === trackId) || (t.id && t.id === trackId)
            );

            if (trackIndexInQueue === -1) {
                console.log('[playTrack] → Track not in queue, adding it');
                addToQueue([track], AppState.queue.length, false);
            } else {
                console.log('[playTrack] → Track already in queue at position', trackIndexInQueue);
                AppState.queuePosition = trackIndexInQueue;
            }

            console.log('[playTrack] │  ✓ Queue position updated:', AppState.queuePosition);
        } else {
            console.log('[playTrack] ├─ Skipping queue position update (skipQueuePositionUpdate=true)');
        }

        // Track listening history (to be implemented with API)
        console.log('[playTrack] ├─ Tracking listen in history...');
        trackListenHistory(trackId, isYoutubeTrack);
        console.log('[playTrack] │  ✓ Listen tracked');

        console.log('[playTrack] → Showing success toast...');
        showToast(`En lecture: ${track.title}`, 'success');
        console.log('[playTrack] ✓ Success toast shown');

        console.log('='.repeat(80));
        console.log('[playTrack] ╔════════════════════════════════════════════════════════════════════════╗');
        console.log('[playTrack] ║           PLAYTRACK FUNCTION COMPLETED SUCCESSFULLY                     ║');
        console.log('[playTrack] ╚════════════════════════════════════════════════════════════════════════╝');
        console.log('[playTrack] Final state:', {
            trackId: trackId,
            title: track.title,
            artist: track.artist_name,
            streamUrl: streamUrl.substring(0, 50) + '...'
        });
        console.log('='.repeat(80));
    } catch (error) {
        console.error('='.repeat(80));
        console.error('[playTrack] ╔════════════════════════════════════════════════════════════════════════╗');
        console.error('[playTrack] ║           PLAYTRACK FUNCTION FAILED                                     ║');
        console.error('[playTrack] ╚════════════════════════════════════════════════════════════════════════╝');
        console.error('[playTrack] Error name:', error.name);
        console.error('[playTrack] Error message:', error.message);
        console.error('[playTrack] Error stack:', error.stack);
        console.error('='.repeat(80));
        showToast('Erreur de connexion au serveur', 'error');
    }
};

// ============================================
// QUEUE MANAGEMENT
// ============================================

/**
 * Add tracks to the queue
 * @param {Array} tracks - Array of track objects to add
 * @param {number|null} position - Position to insert at (null = end of queue)
 * @param {boolean} clear - Clear existing queue before adding
 */
function addToQueue(tracks, position = null, clear = false) {
    console.log('='.repeat(80));
    console.log('[addToQueue] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[addToQueue] ║           ADDTOQUEUE FUNCTION CALLED                                    ║');
    console.log('[addToQueue] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[addToQueue] Timestamp:', new Date().toISOString());
    console.log('[addToQueue] Parameters:', {
        tracksCount: tracks.length,
        position: position,
        clear: clear,
        currentQueueLength: AppState.queue.length
    });
    console.log('='.repeat(80));

    try {
        if (clear) {
            console.log('[addToQueue] → Clearing existing queue...');
            AppState.queue = [];
            AppState.queuePosition = 0;
            console.log('[addToQueue] ✓ Queue cleared');
        }

        if (!tracks || tracks.length === 0) {
            console.warn('[addToQueue] ✗ No tracks to add');
            return;
        }

        console.log('[addToQueue] → Processing', tracks.length, 'tracks...');

        // Filter out duplicates if not clearing
        const tracksToAdd = clear ? tracks : tracks.filter(track => {
            const exists = AppState.queue.some(t =>
                (t.youtube_id && t.youtube_id === track.youtube_id) ||
                (t.id && t.id === track.id)
            );
            if (exists) {
                console.log('[addToQueue]   Skipping duplicate track:', track.title);
            }
            return !exists;
        });

        console.log('[addToQueue] → Unique tracks to add:', tracksToAdd.length);

        if (tracksToAdd.length === 0) {
            console.log('[addToQueue] → All tracks are duplicates, nothing to add');
            showToast('Toutes les pistes sont déjà dans la file', 'info');
            return;
        }

        // Add tracks at specified position or at the end
        const insertPosition = position !== null ? position : AppState.queue.length;
        console.log('[addToQueue] → Insert position:', insertPosition);

        AppState.queue.splice(insertPosition, 0, ...tracksToAdd);
        console.log('[addToQueue] ✓ Tracks added to queue');
        console.log('[addToQueue]   New queue length:', AppState.queue.length);

        // Save to storage
        console.log('[addToQueue] → Saving to localStorage...');
        saveQueueToStorage();
        console.log('[addToQueue] ✓ Queue saved');

        // Update UI
        console.log('[addToQueue] → Updating queue UI...');
        updateQueueUI();
        console.log('[addToQueue] ✓ UI updated');

        // Show toast
        const message = clear
            ? `${tracksToAdd.length} piste${tracksToAdd.length > 1 ? 's' : ''} mise${tracksToAdd.length > 1 ? 's' : ''} en file`
            : `${tracksToAdd.length} piste${tracksToAdd.length > 1 ? 's' : ''} ajoutée${tracksToAdd.length > 1 ? 's' : ''}`;
        showToast(message, 'success');
        console.log('[addToQueue] ✓ Toast shown:', message);

    } catch (error) {
        console.error('[addToQueue] ✗ Error:', error);
        console.error('[addToQueue]   Error message:', error.message);
        console.error('[addToQueue]   Error stack:', error.stack);
        showToast('Erreur lors de l\'ajout à la file', 'error');
    }

    console.log('='.repeat(80));
}

/**
 * Remove a track from the queue
 * @param {number} index - Index of track to remove
 */
function removeFromQueue(index) {
    console.log('='.repeat(80));
    console.log('[removeFromQueue] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[removeFromQueue] ║           REMOVEFROMQUEUE FUNCTION CALLED                              ║');
    console.log('[removeFromQueue] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[removeFromQueue] Timestamp:', new Date().toISOString());
    console.log('[removeFromQueue] Index:', index);
    console.log('[removeFromQueue] Queue length:', AppState.queue.length);
    console.log('[removeFromQueue] Current position:', AppState.queuePosition);
    console.log('='.repeat(80));

    if (index < 0 || index >= AppState.queue.length) {
        console.error('[removeFromQueue] ✗ Invalid index:', index);
        return;
    }

    const removedTrack = AppState.queue[index];
    console.log('[removeFromQueue] → Removing track:', removedTrack.title);

    AppState.queue.splice(index, 1);
    console.log('[removeFromQueue] ✓ Track removed');

    // Adjust position if needed
    if (index < AppState.queuePosition) {
        AppState.queuePosition--;
        console.log('[removeFromQueue] → Position adjusted:', AppState.queuePosition);
    } else if (index === AppState.queuePosition && AppState.queue.length > 0) {
        // If removing current track, play next
        console.log('[removeFromQueue] → Removing current track, playing next...');
        if (AppState.queuePosition >= AppState.queue.length) {
            AppState.queuePosition = Math.max(0, AppState.queue.length - 1);
        }
        if (AppState.queue.length > 0) {
            const nextTrack = AppState.queue[AppState.queuePosition];
            const isYoutubeTrack = !!nextTrack.youtube_id;
            const trackId = nextTrack.youtube_id || nextTrack.id;
            playTrack(trackId, isYoutubeTrack);
        }
    }

    console.log('[removeFromQueue] → Saving to storage...');
    saveQueueToStorage();
    console.log('[removeFromQueue] ✓ Saved');

    console.log('[removeFromQueue] → Updating UI...');
    updateQueueUI();
    console.log('[removeFromQueue] ✓ UI updated');

    showToast('Piste retirée de la file', 'success');
    console.log('='.repeat(80));
}

/**
 * Shuffle the current queue
 */
function shuffleQueue() {
    console.log('='.repeat(80));
    console.log('[shuffleQueue] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[shuffleQueue] ║           SHUFFLEQUEUE FUNCTION CALLED                                  ║');
    console.log('[shuffleQueue] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[shuffleQueue] Timestamp:', new Date().toISOString());
    console.log('[shuffleQueue] Queue length:', AppState.queue.length);
    console.log('='.repeat(80));

    if (AppState.queue.length < 2) {
        console.log('[shuffleQueue] → Queue too small to shuffle');
        showToast('Pas assez de pistes à mélanger', 'info');
        return;
    }

    // Keep track of current track
    const currentTrack = AppState.queue[AppState.queuePosition];
    console.log('[shuffleQueue] → Current track:', currentTrack.title);

    // Fisher-Yates shuffle
    for (let i = AppState.queue.length - 1; i > 0; i--) {
        const j = Math.floor(Math.random() * (i + 1));
        [AppState.queue[i], AppState.queue[j]] = [AppState.queue[j], AppState.queue[i]];
    }

    console.log('[shuffleQueue] ✓ Queue shuffled');

    // Move current track to position 0
    const newCurrentIndex = AppState.queue.findIndex(t =>
        (t.youtube_id && t.youtube_id === currentTrack.youtube_id) ||
        (t.id && t.id === currentTrack.id)
    );

    if (newCurrentIndex > 0) {
        AppState.queue.splice(newCurrentIndex, 1);
        AppState.queue.splice(0, 0, currentTrack);
        AppState.queuePosition = 0;
        console.log('[shuffleQueue] → Current track moved to position 0');
    }

    console.log('[shuffleQueue] → Saving to storage...');
    saveQueueToStorage();
    console.log('[shuffleQueue] ✓ Saved');

    console.log('[shuffleQueue] → Updating UI...');
    updateQueueUI();
    console.log('[shuffleQueue] ✓ UI updated');

    showToast('File d\'attente mélangée', 'success');
    console.log('='.repeat(80));
}

/**
 * Clear the entire queue
 */
function clearQueue() {
    console.log('='.repeat(80));
    console.log('[clearQueue] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[clearQueue] ║           CLEARQUEUE FUNCTION CALLED                                     ║');
    console.log('[clearQueue] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[clearQueue] Timestamp:', new Date().toISOString());
    console.log('[clearQueue] Queue length:', AppState.queue.length);
    console.log('='.repeat(80));

    if (AppState.queue.length === 0) {
        console.log('[clearQueue] → Queue already empty');
        showToast('File d\'attente déjà vide', 'info');
        return;
    }

    // Stop playback if playing
    if (DOM.audioPlayer && !DOM.audioPlayer.paused) {
        console.log('[clearQueue] → Stopping playback...');
        DOM.audioPlayer.pause();
        updatePlayButton(false);
        console.log('[clearQueue] ✓ Playback stopped');
    }

    AppState.queue = [];
    AppState.queuePosition = 0;
    console.log('[clearQueue] ✓ Queue cleared');

    console.log('[clearQueue] → Saving to storage...');
    saveQueueToStorage();
    console.log('[clearQueue] ✓ Saved');

    console.log('[clearQueue] → Updating UI...');
    updateQueueUI();
    console.log('[clearQueue] ✓ UI updated');

    showToast('File d\'attente vidée', 'success');
    console.log('='.repeat(80));
}

/**
 * Save queue to localStorage
 */
function saveQueueToStorage() {
    console.log('='.repeat(80));
    console.log('[saveQueueToStorage] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[saveQueueToStorage] ║           SAVEQUEUETOSTORAGE FUNCTION CALLED                          ║');
    console.log('[saveQueueToStorage] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[saveQueueToStorage] Timestamp:', new Date().toISOString());
    console.log('[saveQueueToStorage] Queue length:', AppState.queue.length);
    console.log('='.repeat(80));

    try {
        const queueData = {
            queue: AppState.queue,
            position: AppState.queuePosition
        };

        const json = JSON.stringify(queueData);
        console.log('[saveQueueToStorage] → Queue data size:', json.length, 'bytes');

        localStorage.setItem('audiohm_queue', json);
        console.log('[saveQueueToStorage] ✓ Queue saved to localStorage');

    } catch (error) {
        console.error('[saveQueueToStorage] ✗ Error saving queue:', error);
        console.error('[saveQueueToStorage]   Error message:', error.message);
    }

    console.log('='.repeat(80));
}

/**
 * Load queue from localStorage
 */
function loadQueueFromStorage() {
    console.log('='.repeat(80));
    console.log('[loadQueueFromStorage] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[loadQueueFromStorage] ║           LOADQUEUEFROMSTORAGE FUNCTION CALLED                        ║');
    console.log('[loadQueueFromStorage] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[loadQueueFromStorage] Timestamp:', new Date().toISOString());
    console.log('='.repeat(80));

    try {
        const data = localStorage.getItem('audiohm_queue');

        if (!data) {
            console.log('[loadQueueFromStorage] → No queue found in storage');
            AppState.queue = [];
            AppState.queuePosition = 0;
            return;
        }

        console.log('[loadQueueFromStorage] → Queue data found, parsing...');
        const queueData = JSON.parse(data);

        if (queueData.queue && Array.isArray(queueData.queue)) {
            AppState.queue = queueData.queue;
            AppState.queuePosition = queueData.position || 0;
            console.log('[loadQueueFromStorage] ✓ Queue loaded');
            console.log('[loadQueueFromStorage]   Tracks:', AppState.queue.length);
            console.log('[loadQueueFromStorage]   Position:', AppState.queuePosition);

            // Update UI after a short delay to ensure DOM is ready
            setTimeout(() => {
                updateQueueUI();
            }, 100);
        } else {
            console.warn('[loadQueueFromStorage] ✗ Invalid queue data format');
            AppState.queue = [];
            AppState.queuePosition = 0;
        }

    } catch (error) {
        console.error('[loadQueueFromStorage] ✗ Error loading queue:', error);
        console.error('[loadQueueFromStorage]   Error message:', error.message);
        AppState.queue = [];
        AppState.queuePosition = 0;
    }

    console.log('='.repeat(80));
}

/**
 * Update queue UI
 */
function updateQueueUI() {
    console.log('='.repeat(80));
    console.log('[updateQueueUI] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[updateQueueUI] ║           UPDATEQUEUEUI FUNCTION CALLED                                  ║');
    console.log('[updateQueueUI] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[updateQueueUI] Timestamp:', new Date().toISOString());
    console.log('[updateQueueUI] Queue length:', AppState.queue.length);
    console.log('[updateQueueUI] Current position:', AppState.queuePosition);
    console.log('='.repeat(80));

    // Update queue count
    if (DOM.queueCount) {
        DOM.queueCount.textContent = AppState.queue.length;
        console.log('[updateQueueUI] ✓ Queue count updated');
    }

    // Update queue list
    if (!DOM.queueList) {
        console.warn('[updateQueueUI] ✗ Queue list element not found');
        console.log('='.repeat(80));
        return;
    }

    if (AppState.queue.length === 0) {
        console.log('[updateQueueUI] → Queue empty, showing empty state');
        DOM.queueList.innerHTML = `
            <div class="flex flex-col items-center justify-center py-12 text-gray-400">
                <i class="fas fa-list-ul text-4xl mb-4"></i>
                <p class="text-lg">File d'attente vide</p>
                <p class="text-sm mt-2">Cliquez sur une piste pour l'ajouter</p>
            </div>
        `;
        console.log('[updateQueueUI] ✓ Empty state rendered');
        console.log('='.repeat(80));
        return;
    }

    console.log('[updateQueueUI] → Rendering queue items...');
    DOM.queueList.innerHTML = AppState.queue.map((track, index) => {
        const isCurrentTrack = index === AppState.queuePosition;
        const artistName = track.artist_name || track.artist || track.artist?.name || 'Artiste inconnu';

        console.log('[updateQueueUI]   Track', index + 1, ':', track.title, '(current:', isCurrentTrack + ')');

        return `
            <div class="queue-item flex items-center gap-3 p-3 rounded-lg transition-all cursor-pointer group
                ${isCurrentTrack ? 'bg-primary-600/20 border-l-4 border-primary-500' : 'hover:bg-gray-800/50'}"
                data-index="${index}"
                onclick="playTrackFromQueue(${index})"
                role="button"
                tabindex="0"
                aria-label="Lire ${track.title}"
                aria-current="${isCurrentTrack ? 'true' : 'false'}">
                <div class="flex-shrink-0 w-8 text-center text-sm ${isCurrentTrack ? 'text-primary-400' : 'text-gray-500'}">
                    ${isCurrentTrack
                        ? '<i class="fas fa-volume-up animate-pulse"></i>'
                        : `<span class="group-hover:hidden">${index + 1}</span><i class="fas fa-play hidden group-hover:inline"></i>`
                    }
                </div>
                <img src="${track.image_url || track.cover || '/static/img/default-cover.png'}"
                    alt=""
                    class="w-10 h-10 rounded object-cover bg-gray-800 flex-shrink-0"
                    aria-hidden="true">
                <div class="flex-1 min-w-0">
                    <p class="font-medium text-sm truncate ${isCurrentTrack ? 'text-primary-400' : 'text-white'}">
                        ${track.title}
                    </p>
                    <p class="text-xs text-gray-400 truncate">${artistName}</p>
                </div>
                <button onclick="event.stopPropagation(); removeFromQueue(${index})"
                    class="p-2 text-gray-500 hover:text-red-400 opacity-0 group-hover:opacity-100 transition-all"
                    aria-label="Retirer ${track.title} de la file">
                    <i class="fas fa-times"></i>
                </button>
            </div>
        `;
    }).join('');

    console.log('[updateQueueUI] ✓ Queue items rendered');

    // Scroll to current track
    if (AppState.queuePosition > 0) {
        const currentItem = DOM.queueList.querySelector(`[data-index="${AppState.queuePosition}"]`);
        if (currentItem) {
            currentItem.scrollIntoView({ behavior: 'smooth', block: 'nearest' });
            console.log('[updateQueueUI] ✓ Scrolled to current track');
        }
    }

    console.log('='.repeat(80));
}

/**
 * Play a track from the queue
 * @param {number} index - Index of track to play
 */
window.playTrackFromQueue = function(index) {
    console.log('='.repeat(80));
    console.log('[playTrackFromQueue] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[playTrackFromQueue] ║           PLAYTRACKFROMQUEUE FUNCTION CALLED                           ║');
    console.log('[playTrackFromQueue] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[playTrackFromQueue] Timestamp:', new Date().toISOString());
    console.log('[playTrackFromQueue] Index:', index);
    console.log('='.repeat(80));

    if (index < 0 || index >= AppState.queue.length) {
        console.error('[playTrackFromQueue] ✗ Invalid index:', index);
        return;
    }

    AppState.queuePosition = index;
    const track = AppState.queue[index];
    console.log('[playTrackFromQueue] → Track:', track.title);

    const isYoutubeTrack = !!track.youtube_id;
    const trackId = track.youtube_id || track.id;

    playTrack(trackId, isYoutubeTrack);
    updateQueueUI();

    console.log('='.repeat(80));
};

/**
 * Open the queue panel
 */
function openQueuePanel() {
    console.log('[openQueuePanel] Opening queue panel...');
    AppState.isQueuePanelOpen = true;

    if (DOM.queuePanel) {
        DOM.queuePanel.classList.remove('translate-x-full');
        DOM.queuePanel.classList.add('translate-x-0');
        console.log('[openQueuePanel] ✓ Panel opened');
    }

    if (DOM.queueOpenBtn) {
        DOM.queueOpenBtn.setAttribute('aria-expanded', 'true');
    }

    updateQueueUI();
}

/**
 * Close the queue panel
 */
function closeQueuePanel() {
    console.log('[closeQueuePanel] Closing queue panel...');
    AppState.isQueuePanelOpen = false;

    if (DOM.queuePanel) {
        DOM.queuePanel.classList.add('translate-x-full');
        DOM.queuePanel.classList.remove('translate-x-0');
        console.log('[closeQueuePanel] ✓ Panel closed');
    }

    if (DOM.queueOpenBtn) {
        DOM.queueOpenBtn.setAttribute('aria-expanded', 'false');
    }
}

/**
 * Track a listening event in the history
 * @param {string} trackId - The track ID
 * @param {boolean} isYoutubeTrack - Whether it's a YouTube track
 * @async
 */
async function trackListenHistory(trackId, isYoutubeTrack) {
    console.log('='.repeat(80));
    console.log('[trackListenHistory] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[trackListenHistory] ║           TRACKLISTENHISTORY FUNCTION CALLED                           ║');
    console.log('[trackListenHistory] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[trackListenHistory] Timestamp:', new Date().toISOString());
    console.log('[trackListenHistory] Track ID:', trackId);
    console.log('[trackListenHistory] Is YouTube:', isYoutubeTrack);
    console.log('='.repeat(80));

    try {
        const token = localStorage.getItem('token');
        if (!token) {
            console.log('[trackListenHistory] → No token found, skipping history tracking');
            return;
        }
        console.log('[trackListenHistory] ✓ Token found');

        console.log('[trackListenHistory] → Sending history event to API...');
        console.log('[trackListenHistory] → Endpoint: POST /api/v1/library/history');

        const response = await fetch('/api/v1/library/history', {
            method: 'POST',
            headers: {
                'Authorization': `Bearer ${token}`,
                'Content-Type': 'application/json'
            },
            body: JSON.stringify({
                track_id: trackId,
                played_for: 0,
                completed: false,
                source: isYoutubeTrack ? 'youtube' : 'library'
            })
        });

        console.log('[trackListenHistory] → Response status:', response.status);

        if (response.ok) {
            console.log('[trackListenHistory] ✓ Listen event tracked successfully');
        } else {
            console.warn('[trackListenHistory] → Failed to track listen event');
            console.warn('[trackListenHistory] → Status:', response.status);
            // Don't show error toast to user, this is non-critical
        }
    } catch (error) {
        console.warn('[trackListenHistory] → Error tracking listen:', error.message);
        // Don't show error toast to user, this is non-critical
    }

    console.log('='.repeat(80));
}

// ============================================
// PLAYLIST MANAGEMENT
// ============================================

// Show create playlist modal
window.showCreatePlaylistModal = function() {
    console.log('[showCreatePlaylistModal] Showing modal');
    const modal = document.getElementById('create-playlist-modal');
    if (modal) {
        modal.classList.remove('hidden');
        modal.setAttribute('aria-hidden', 'false');
        document.getElementById('playlist-name').focus();
    }
};

// Hide create playlist modal
window.hideCreatePlaylistModal = function() {
    console.log('[hideCreatePlaylistModal] Hiding modal');
    const modal = document.getElementById('create-playlist-modal');
    if (modal) {
        modal.classList.add('hidden');
        modal.setAttribute('aria-hidden', 'true');
        // Reset form
        const form = document.getElementById('create-playlist-form');
        if (form) form.reset();
    }
};

// Create a new playlist
window.createPlaylist = async function(e) {
    console.log('='.repeat(80));
    console.log('[createPlaylist] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[createPlaylist] ║           CREATING NEW PLAYLIST                                        ║');
    console.log('[createPlaylist] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('='.repeat(80));

    e.preventDefault();

    const name = document.getElementById('playlist-name').value.trim();
    const description = document.getElementById('playlist-description').value.trim();

    if (!name) {
        showToast('Le nom de la playlist est requis', 'error');
        return;
    }

    console.log('[createPlaylist] → Creating playlist:', { name, description });

    try {
        const token = localStorage.getItem('token');
        const response = await fetch('/api/v1/playlists', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json',
                'Authorization': `Bearer ${token}`
            },
            body: JSON.stringify({
                name,
                description: description || null
            })
        });

        if (response.ok) {
            const newPlaylist = await response.json();
            console.log('[createPlaylist] ✓ Playlist created successfully:', newPlaylist);
            showToast(`Playlist "${name}" créée avec succès!`, 'success');
            hideCreatePlaylistModal();

            // If there's a pending track to add, add it now
            if (window.pendingTrackToAdd) {
                console.log('[createPlaylist] → Adding pending track to new playlist');
                await addTrackToPlaylist(window.pendingTrackToAdd, newPlaylist.id, newPlaylist.name);
                window.pendingTrackToAdd = null;
            }

            // Reload playlists
            await loadPlaylists();
        } else {
            const error = await response.json();
            console.error('[createPlaylist] ✗ Error creating playlist:', error);
            showToast(error.detail || 'Erreur lors de la création', 'error');
        }
    } catch (error) {
        console.error('[createPlaylist] ✗ Exception:', error);
        showToast('Erreur de connexion', 'error');
    }

    console.log('='.repeat(80));
};

/**
 * Create a track from YouTube ID in the database
 * This ensures the track has a valid UUID for playlist/liked operations
 * @param {string} youtubeId - YouTube video ID
 * @param {string} title - Track title
 * @param {string} artist - Artist name
 * @returns {Promise<string|null>} - Returns UUID if successful, null otherwise
 */
async function createTrackFromYouTube(youtubeId, title, artist) {
    console.log('='.repeat(80));
    console.log('[createTrackFromYouTube] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[createTrackFromYouTube] ║           CREATING TRACK FROM YOUTUBE                               ║');
    console.log('[createTrackFromYouTube] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[createTrackFromYouTube] YouTube ID:', youtubeId);
    console.log('[createTrackFromYouTube] Title:', title);
    console.log('[createTrackFromYouTube] Artist:', artist);
    console.log('='.repeat(80));

    try {
        const token = localStorage.getItem('token');
        if (!token) {
            console.error('[createTrackFromYouTube] ✗ No token found');
            return null;
        }

        // Build query parameters
        const params = new URLSearchParams({
            youtube_id: youtubeId,
            title: title,
            artist: artist || 'Unknown Artist'
        });

        const response = await fetch(`/api/v1/music/tracks/from-youtube?${params}`, {
            method: 'POST',
            headers: {
                'Authorization': `Bearer ${token}`
            }
        });

        if (response.ok) {
            const track = await response.json();
            console.log('[createTrackFromYouTube] ✓ Track created successfully');
            console.log('[createTrackFromYouTube] → Track UUID:', track.id);
            return track.id;
        } else {
            const error = await response.json();
            console.error('[createTrackFromYouTube] ✗ Failed to create track');
            console.error('[createTrackFromYouTube] → Error:', error.detail);
            return null;
        }
    } catch (error) {
        console.error('[createTrackFromYouTube] ✗ Exception:', error);
        return null;
    }
}

// Add track to playlist
window.addTrackToPlaylist = async function(trackId, playlistId, playlistName) {
    console.log('='.repeat(80));
    console.log('[addTrackToPlaylist] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[addTrackToPlaylist] ║           ADDING TRACK TO PLAYLIST                                   ║');
    console.log('[addTrackToPlaylist] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[addTrackToPlaylist] Track ID:', trackId, 'Playlist ID:', playlistId);
    console.log('='.repeat(80));

    try {
        const token = localStorage.getItem('token');

        // Validate UUID format
        const uuidRegex = /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i;
        let actualTrackId = trackId;

        if (!uuidRegex.test(trackId)) {
            console.log('[addTrackToPlaylist] → Track ID is not a UUID, attempting to create track from YouTube ID');

            // Get track info from DOM element
            const trackElement = document.querySelector(`[data-id="${trackId}"]`) ||
                                 document.querySelector(`[data-youtube-id="${trackId}"]`);

            if (!trackElement) {
                console.error('[addTrackToPlaylist] ✗ Track element not found in DOM');
                showToast('Impossible de trouver les informations de la piste', 'error');
                const dropdown = document.getElementById(`playlist-dropdown-${trackId}`);
                if (dropdown) dropdown.classList.add('hidden');
                return;
            }

            const title = decodeURIComponent(trackElement.dataset.title || 'Unknown Track');
            const artist = decodeURIComponent(trackElement.dataset.artist || 'Unknown Artist');

            console.log('[addTrackToPlaylist] → Creating track from YouTube...');
            console.log('[addTrackToPlaylist]    YouTube ID:', trackId);
            console.log('[addTrackToPlaylist]    Title:', title);
            console.log('[addTrackToPlaylist]    Artist:', artist);

            showToast('Création de la piste en cours...', 'info');

            // Create the track in database
            actualTrackId = await createTrackFromYouTube(trackId, title, artist);

            if (!actualTrackId) {
                console.error('[addTrackToPlaylist] ✗ Failed to create track');
                showToast('Erreur lors de la création de la piste', 'error');
                const dropdown = document.getElementById(`playlist-dropdown-${trackId}`);
                if (dropdown) dropdown.classList.add('hidden');
                return;
            }

            console.log('[addTrackToPlaylist] ✓ Track created with UUID:', actualTrackId);

            // Update the DOM element with the new UUID
            if (trackElement) {
                trackElement.setAttribute('data-id', actualTrackId);
                trackElement.setAttribute('data-uuid-created', 'true');
                console.log('[addTrackToPlaylist] ✓ DOM element updated with UUID');
            }
        }

        const response = await fetch(`/api/v1/playlists/${playlistId}/tracks`, {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json',
                'Authorization': `Bearer ${token}`
            },
            body: JSON.stringify({
                track_ids: [actualTrackId]
            })
        });

        if (response.ok) {
            console.log('[addTrackToPlaylist] ✓ Track added successfully');
            showToast(`Ajouté à "${playlistName}"`, 'success');
            // Close dropdown
            const dropdown = document.getElementById(`playlist-dropdown-${trackId}`);
            if (dropdown) dropdown.classList.add('hidden');
            // Reload playlists to update track count
            await loadPlaylists();
        } else {
            const error = await response.json();
            console.error('[addTrackToPlaylist] ✗ Error adding track:', error);
            showToast(error.detail || 'Erreur lors de l\'ajout', 'error');
        }
    } catch (error) {
        console.error('[addTrackToPlaylist] ✗ Exception:', error);
        showToast('Erreur de connexion', 'error');
    }

    console.log('='.repeat(80));
};

// Toggle add to playlist dropdown
window.toggleAddToPlaylistDropdown = async function(event, trackId) {
    console.log('[toggleAddToPlaylistDropdown] Toggling dropdown for track:', trackId);

    event.stopPropagation();

    // Close all other dropdowns first
    document.querySelectorAll('[id^="playlist-dropdown-"]').forEach(dropdown => {
        if (dropdown.id !== `playlist-dropdown-${trackId}`) {
            dropdown.classList.add('hidden');
        }
    });

    const dropdown = document.getElementById(`playlist-dropdown-${trackId}`);
    if (!dropdown) {
        console.error('[toggleAddToPlaylistDropdown] ✗ Dropdown not found');
        return;
    }

    if (dropdown.classList.contains('hidden')) {
        console.log('[toggleAddToPlaylistDropdown] → Showing dropdown and loading playlists');

        // Position the dropdown above the button
        const button = event.target.closest('button');
        if (button) {
            const rect = button.getBoundingClientRect();
            dropdown.style.top = `${rect.bottom + 8}px`;
            dropdown.style.right = `${window.innerWidth - rect.right}px`;
        }

        // Load playlists into dropdown
        const optionsContainer = document.getElementById(`playlist-options-${trackId}`);

        if (AppState.playlists.length === 0) {
            optionsContainer.innerHTML = `
                <div class="px-3 py-2 text-sm text-gray-400 text-center">
                    Aucune playlist
                </div>
            `;
        } else {
            optionsContainer.innerHTML = AppState.playlists.map(playlist => `
                <button onclick="event.stopPropagation(); addTrackToPlaylist('${trackId}', '${playlist.id}', '${playlist.name.replace(/'/g, "\\'")}')"
                        class="w-full px-3 py-2 text-left text-sm text-gray-300 hover:bg-gray-700/50 rounded-lg transition-all truncate">
                    ${playlist.name}
                </button>
            `).join('');
        }

        dropdown.classList.remove('hidden');
    } else {
        dropdown.classList.add('hidden');
    }
};

// Create new playlist from track (opens modal)
window.createNewPlaylistFromTrack = function(trackId) {
    console.log('[createNewPlaylistFromTrack] Opening modal for track:', trackId);
    // Store track ID to add after playlist creation
    window.pendingTrackToAdd = trackId;
    // Close dropdown
    const dropdown = document.getElementById(`playlist-dropdown-${trackId}`);
    if (dropdown) dropdown.classList.add('hidden');
    // Show modal
    showCreatePlaylistModal();
};

// Show playlist details modal
window.showPlaylistDetails = async function(playlistId) {
    console.log('='.repeat(80));
    console.log('[showPlaylistDetails] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[showPlaylistDetails] ║           SHOWING PLAYLIST DETAILS                                    ║');
    console.log('[showPlaylistDetails] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[showPlaylistDetails] Playlist ID:', playlistId);
    console.log('='.repeat(80));

    try {
        const token = localStorage.getItem('token');
        const response = await fetch(`/api/v1/playlists/${playlistId}?include_tracks=true`, {
            headers: {
                'Authorization': `Bearer ${token}`
            }
        });

        if (response.ok) {
            const playlist = await response.json();
            console.log('[showPlaylistDetails] ✓ Playlist data loaded:', playlist);

            // Update modal content
            document.getElementById('playlist-details-title').textContent = playlist.name;
            document.getElementById('playlist-details-description').textContent =
                playlist.description || 'Aucune description';

            // Store playlist ID for play buttons
            window.currentPlaylistId = playlistId;

            // Render tracks
            const tracksContainer = document.getElementById('playlist-tracks');
            if (playlist.tracks && playlist.tracks.length > 0) {
                // Extract track objects from the response
                const trackObjects = playlist.tracks.map(pt => pt.track).filter(t => t !== null);
                console.log('[showPlaylistDetails] → Tracks to render:', trackObjects.length);

                if (trackObjects.length > 0) {
                    // Use renderTracks function
                    renderTracks(trackObjects, tracksContainer);
                } else {
                    tracksContainer.innerHTML = `
                        <div class="flex flex-col items-center justify-center py-12 text-gray-400">
                            <i class="fas fa-music text-4xl mb-4"></i>
                            <p class="text-lg">Aucune piste disponible</p>
                        </div>
                    `;
                }
            } else {
                tracksContainer.innerHTML = `
                    <div class="flex flex-col items-center justify-center py-12 text-gray-400">
                        <i class="fas fa-music text-4xl mb-4"></i>
                        <p class="text-lg">Aucune piste</p>
                        <p class="text-sm mt-2">Ajoutez des pistes depuis la recherche</p>
                    </div>
                `;
            }

            // Show modal
            const modal = document.getElementById('playlist-details-modal');
            modal.classList.remove('hidden');
            modal.setAttribute('aria-hidden', 'false');

            console.log('[showPlaylistDetails] ✓ Modal shown');
        } else {
            const error = await response.json();
            console.error('[showPlaylistDetails] ✗ Error loading playlist:', error);
            showToast(error.detail || 'Erreur lors du chargement', 'error');
        }
    } catch (error) {
        console.error('[showPlaylistDetails] ✗ Exception:', error);
        showToast('Erreur de connexion', 'error');
    }

    console.log('='.repeat(80));
};

// Hide playlist details modal
window.hidePlaylistDetails = function() {
    console.log('[hidePlaylistDetails] Hiding modal');
    const modal = document.getElementById('playlist-details-modal');
    if (modal) {
        modal.classList.add('hidden');
        modal.setAttribute('aria-hidden', 'true');
        window.currentPlaylistId = null;
    }
};

// Play playlist
window.playPlaylist = async function(playlistId, shuffle = false) {
    console.log('='.repeat(80));
    console.log('[playPlaylist] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[playPlaylist] ║           PLAYING PLAYLIST                                              ║');
    console.log('[playPlaylist] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[playPlaylist] Playlist ID:', playlistId, 'Shuffle:', shuffle);
    console.log('='.repeat(80));

    try {
        const token = localStorage.getItem('token');
        const response = await fetch(`/api/v1/playlists/${playlistId}?include_tracks=true`, {
            headers: {
                'Authorization': `Bearer ${token}`
            }
        });

        if (response.ok) {
            const playlist = await response.json();
            console.log('[playPlaylist] ✓ Playlist loaded:', playlist.name);

            if (playlist.tracks && playlist.tracks.length > 0) {
                // Extract track objects
                const trackObjects = playlist.tracks
                    .map(pt => pt.track)
                    .filter(t => t !== null);

                if (trackObjects.length > 0) {
                    console.log('[playPlaylist] → Tracks to play:', trackObjects.length);

                    // Clear queue and add tracks
                    AppState.queue = [];
                    AppState.queuePosition = 0;

                    // Add tracks to queue
                    trackObjects.forEach(track => {
                        AppState.queue.push({
                            id: track.id,
                            youtube_id: track.youtube_id,
                            title: track.title,
                            artist: track.artist,
                            image_url: track.image_url,
                            duration: track.duration
                        });
                    });

                    // Shuffle if requested
                    if (shuffle) {
                        console.log('[playPlaylist] → Shuffling queue');
                        shuffleQueue();
                    }

                    // Update queue UI
                    updateQueueUI();

                    // Play first track
                    const firstTrack = AppState.queue[0];
                    console.log('[playPlaylist] → Playing first track:', firstTrack.title);
                    await playTrack(firstTrack.id, !!firstTrack.youtube_id);

                    showToast(`Lecture de "${playlist.name}"`, 'success');
                } else {
                    showToast('Aucune piste à jouer', 'error');
                }
            } else {
                showToast('Playlist vide', 'error');
            }
        } else {
            const error = await response.json();
            console.error('[playPlaylist] ✗ Error:', error);
            showToast(error.detail || 'Erreur lors du chargement', 'error');
        }
    } catch (error) {
        console.error('[playPlaylist] ✗ Exception:', error);
        showToast('Erreur de connexion', 'error');
    }

    console.log('='.repeat(80));
};

// Delete playlist with confirmation
window.deletePlaylistWithConfirm = function(playlistId, playlistName) {
    console.log('[deletePlaylistWithConfirm] Playlist:', playlistId, playlistName);

    if (confirm(`Êtes-vous sûr de vouloir supprimer "${playlistName}" ?\n\nCette action est irréversible.`)) {
        deletePlaylist(playlistId);
    }
};

// Delete playlist
window.deletePlaylist = async function(playlistId) {
    console.log('='.repeat(80));
    console.log('[deletePlaylist] ╔════════════════════════════════════════════════════════════════════════╗');
    console.log('[deletePlaylist] ║           DELETING PLAYLIST                                             ║');
    console.log('[deletePlaylist] ╚════════════════════════════════════════════════════════════════════════╝');
    console.log('[deletePlaylist] Playlist ID:', playlistId);
    console.log('='.repeat(80));

    try {
        const token = localStorage.getItem('token');
        const response = await fetch(`/api/v1/playlists/${playlistId}`, {
            method: 'DELETE',
            headers: {
                'Authorization': `Bearer ${token}`
            }
        });

        if (response.ok) {
            console.log('[deletePlaylist] ✓ Playlist deleted successfully');
            showToast('Playlist supprimée', 'success');
            // Reload playlists
            await loadPlaylists();
        } else {
            const error = await response.json();
            console.error('[deletePlaylist] ✗ Error:', error);
            showToast(error.detail || 'Erreur lors de la suppression', 'error');
        }
    } catch (error) {
        console.error('[deletePlaylist] ✗ Exception:', error);
        showToast('Erreur de connexion', 'error');
    }

    console.log('='.repeat(80));
};

// ============================================
// TOAST NOTIFICATIONS
// ============================================
function showToast(message, type = 'success') {
    if (!DOM.toastContainer) return;

    const toast = document.createElement('div');

    // Tailwind classes based on type
    const baseClasses = 'glass-card rounded-xl px-4 py-3 shadow-lg flex items-center gap-3 min-w-[300px] animate-fadeIn';
    const typeClasses = {
        success: 'border-l-4 border-emerald-500 text-emerald-400',
        error: 'border-l-4 border-red-500 text-red-400',
        info: 'border-l-4 border-primary-500 text-primary-400'
    };

    const iconClasses = {
        success: 'fa-check-circle text-emerald-400',
        error: 'fa-exclamation-circle text-red-400',
        info: 'fa-info-circle text-primary-400'
    };

    toast.className = `${baseClasses} ${typeClasses[type] || typeClasses.success}`;

    toast.innerHTML = `
        <i class="fas ${iconClasses[type] || iconClasses.success} text-lg"></i>
        <span class="flex-1 text-white">${message}</span>
        <button onclick="this.parentElement.remove()" class="text-gray-400 hover:text-white transition-colors">
            <i class="fas fa-times"></i>
        </button>
    `;

    DOM.toastContainer.appendChild(toast);

    setTimeout(() => {
        toast.style.opacity = '0';
        toast.style.transform = 'translateX(100%)';
        toast.style.transition = 'all 0.3s ease-out';
        setTimeout(() => toast.remove(), 300);
    }, 4000);
}

// ============================================
// KEYBOARD SHORTCUTS
// ============================================
document.addEventListener('keydown', (e) => {
    // Close queue panel with Escape
    if (e.code === 'Escape' && AppState.isQueuePanelOpen) {
        closeQueuePanel();
        return;
    }

    // Don't trigger if typing in input (except Enter which is handled separately)
    if (e.target.tagName === 'INPUT' || e.target.tagName === 'TEXTAREA') {
        // Allow space in search inputs (for searching terms with spaces)
        if (e.target.id.includes('search') && e.code === 'Space') {
            return;
        }
        // Return early for other shortcuts, but let Enter be handled by input event listeners
        if (e.code !== 'Enter') return;
    }

    switch(e.code) {
        case 'Space':
            e.preventDefault();
            togglePlayPause();
            break;
        case 'ArrowRight':
            if (e.shiftKey) playNext();
            else if (DOM.audioPlayer) DOM.audioPlayer.currentTime += 10;
            break;
        case 'ArrowLeft':
            if (e.shiftKey) playPrevious();
            else if (DOM.audioPlayer) DOM.audioPlayer.currentTime -= 10;
            break;
        case 'ArrowUp':
            e.preventDefault();
            if (DOM.volumeBar) {
                DOM.volumeBar.value = Math.min(100, parseInt(DOM.volumeBar.value) + 10);
                handleVolumeChange();
            }
            break;
        case 'ArrowDown':
            e.preventDefault();
            if (DOM.volumeBar) {
                DOM.volumeBar.value = Math.max(0, parseInt(DOM.volumeBar.value) - 10);
                handleVolumeChange();
            }
            break;
        case 'KeyM':
            toggleMute();
            break;
    }
});

// ============================================
// INIT
// ============================================
if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', init);
} else {
    init();
}