class DeckController {
    constructor(id) {
        this.audio = new Audio();
        this.gainNode = audioContext.createGain();
        this.analyserNode = audioContext.createAnalyser();
        this.setupWaveform();
    }

    setupWaveform() {
        this.analyserNode.fftSize = 2048;
        this.bufferLength = this.analyserNode.frequencyBinCount;
        this.dataArray = new Uint8Array(this.bufferLength);
    }
}

// Playlist management
async function loadPlaylist(id) {
    const tracks = await fetch(`/api/playlists/${id}/tracks`)
        .then(r => r.json());

    tracks.forEach(track => {
        // BPM and metadata analysis
        analyzeBPM(track);
        updateTrackInfo(track);
    });
}

@admin.route('/users/create', methods=['POST'])
@admin_required
def create_user():
    user = User(
        username=request.form['username'],
        email=request.form['email'],
        is_active=True,
        can_access_mixer=request.form.get('can_access_mixer', False)
    )
    db.session.add(user)
    db.session.commit()

@login_required
@mixer_access_required
def mixer():
    """Protect sensitive routes"""
    return render_template('mixer.html')

// Audio analysis
async function analyzeBPM(track) {
    const audioData = await loadAudioData(track.url);
    const tempo = detectBPM(audioData);
    updateTrackMetadata(track.id, { bpm: tempo });
}

class DeckController {
    constructor(id) {
        this.audio = new Audio();
        this.gainNode = audioContext.createGain();
        this.analyserNode = audioContext.createAnalyser();
        this.setupWaveform();
    }

    setupWaveform() {
        this.analyserNode.fftSize = 2048;
        this.bufferLength = this.analyserNode.frequencyBinCount;
        this.dataArray = new Uint8Array(this.bufferLength);
    }
}

// Gestion des playlists
async function loadPlaylist(id) {
    const tracks = await fetch(`/api/playlists/${id}/tracks`)
        .then(r => r.json());

    tracks.forEach(track => {
        // Analyse BPM et métadonnées
        analyzeBPM(track);
        updateTrackInfo(track);
    });
}

@admin.route('/users/create', methods=['POST'])
@admin_required
def create_user():
    user = User(
        username=request.form['username'],
        email=request.form['email'],
        is_active=True,
        can_access_mixer=request.form.get('can_access_mixer', False)
    )
    db.session.add(user)
    db.session.commit()

@login_required
@mixer_access_required
def mixer():
    """Protection des routes sensibles"""
    return render_template('mixer.html')

// Analyse audio
async function analyzeBPM(track) {
    const audioData = await loadAudioData(track.url);
    const tempo = detectBPM(audioData);
    updateTrackMetadata(track.id, { bpm: tempo });
}