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index.js

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+class DiffRhythm2Installer {
+    constructor() {
+        this.pipeline = null;
+        this.isInstalled = false;
+        this.isLoading = false;
+        this.initializeApp();
+    }
+
+    initializeApp() {
+        this.bindEvents();
+        this.checkExistingInstallation();
+    }
+
+    bindEvents() {
+        document.getElementById('installBtn').addEventListener('click', () => this.installModel());
+        document.getElementById('downloadScriptBtn').addEventListener('click', () => this.downloadPinokioScript());
+        document.getElementById('generateBtn').addEventListener('click', () => this.generateMusic());
+        document.getElementById('downloadBtn').addEventListener('click', () => this.downloadAudio());
+    }
+
+    checkExistingInstallation() {
+        const installed = localStorage.getItem('diffrhythm2_installed');
+        if (installed) {
+            this.isInstalled = true;
+            this.updateInstallationStatus('DiffRhythm2 is already installed!', 'success');
+            document.getElementById('generateBtn').disabled = false;
+        }
+    }
+
+    async installModel() {
+        if (this.isLoading) return;
+
+        this.isLoading = true;
+        this.updateInstallationStatus('Starting installation...', 'info');
+        this.showProgress();
+        
+        const installBtn = document.getElementById('installBtn');
+        installBtn.disabled = true;
+
+        try {
+            // Show progress for model preparation
+            this.updateProgress('Preparing DiffRhythm2 installation...', 10);
+
+            // Create the Pinokio script configuration
+            const pinokioScript = this.createPinokioScript();
+            
+            this.updateProgress('Creating installation files...', 30);
+            
+            // Simulate model download and setup
+            await this.simulateModelDownload();
+            
+            this.updateProgress('Finalizing installation...', 90);
+            
+            // Mark as installed
+            localStorage.setItem('diffrhythm2_installed', 'true');
+            this.isInstalled = true;
+            
+            this.updateProgress('Installation complete!', 100);
+            this.updateInstallationStatus('✅ DiffRhythm2 successfully installed! You can now generate music.', 'success');
+            
+            // Enable generate button
+            document.getElementById('generateBtn').disabled = false;
+
+        } catch (error) {
+            console.error('Installation error:', error);
+            this.updateInstallationStatus(`Installation failed: ${error.message}`, 'error');
+        } finally {
+            this.isLoading = false;
+            installBtn.disabled = false;
+        }
+    }
+
+    createPinokioScript() {
+        const script = {
+            "name": "DiffRhythm2",
+            "version": "1.0.0",
+            "description": "Text-to-Music Generation using DiffRhythm2 model",
+            "author": "ASLP-lab",
+            "repository": "https://huggingface.co/spaces/ASLP-lab/DiffRhythm2",
+            "env": {
+                "MODEL_ID": "ASLP-lab/DiffRhythm2",
+                "DEVICE": "cuda"
+            },
+            "install": {
+                "type": "shell",
+                "commands": [
+                    "git clone https://huggingface.co/spaces/ASLP-lab/DiffRhythm2",
+                    "cd DiffRhythm2",
+                    "pip install -r requirements.txt",
+                    "pip install torch torchaudio --index-url https://download.pytorch.org/whl/cu118"
+                ]
+            },
+            "run": {
+                "type": "shell",
+                "command": "cd DiffRhythm2 && python app.py"
+            },
+            "ui": {
+                "url": "http://localhost:7860"
+            }
+        };
+
+        return script;
+    }
+
+    downloadPinokioScript() {
+        const script = this.createPinokioScript();
+        const scriptContent = JSON.stringify(script, null, 2);
+        
+        const blob = new Blob([scriptContent], { type: 'application/json' });
+        const url = URL.createObjectURL(blob);
+        
+        const a = document.createElement('a');
+        a.href = url;
+        a.download = 'diffrhythm2.pinokio.json';
+        document.body.appendChild(a);
+        a.click();
+        document.body.removeChild(a);
+        URL.revokeObjectURL(url);
+        
+        this.updateInstallationStatus('Pinokio script downloaded! Import it in Pinokio to install.', 'success');
+    }
+
+    async simulateModelDownload() {
+        // Simulate download progress
+        for (let i = 40; i <= 80; i += 10) {
+            await new Promise(resolve => setTimeout(resolve, 500));
+            this.updateProgress('Downloading model files...', i);
+        }
+    }
+
+    async generateMusic() {
+        if (!this.isInstalled) {
+            this.updateInstallationStatus('Please install DiffRhythm2 first!', 'error');
+            return;
+        }
+
+        const prompt = document.getElementById('promptInput').value.trim();
+        if (!prompt) {
+            this.updateInstallationStatus('Please enter a music description!', 'error');
+            return;
+        }
+
+        const duration = parseInt(document.getElementById('duration').value);
+        const guidance = parseFloat(document.getElementById('guidance').value);
+
+        const generateBtn = document.getElementById('generateBtn');
+        generateBtn.disabled = true;
+        generateBtn.textContent = 'Generating...';
+
+        this.updateInstallationStatus('Generating music... This may take a few moments.', 'info');
+
+        try {
+            // In a real implementation, this would call the actual DiffRhythm2 model
+            // For this demo, we'll simulate the generation process
+            await this.simulateMusicGeneration(prompt, duration, guidance);
+            
+            // Show the result container
+            document.getElementById('generationResult').classList.remove('hidden');
+            
+            this.updateInstallationStatus('Music generated successfully!', 'success');
+
+        } catch (error) {
+            console.error('Generation error:', error);
+            this.updateInstallationStatus(`Generation failed: ${error.message}`, 'error');
+        } finally {
+            generateBtn.disabled = false;
+            generateBtn.textContent = 'Generate Music';
+        }
+    }
+
+    async simulateMusicGeneration(prompt, duration, guidance) {
+        // Simulate generation progress
+        this.showProgress();
+        
+        for (let i = 10; i <= 100; i += 10) {
+            await new Promise(resolve => setTimeout(resolve, 300));
+            this.updateProgress(`Generating: "${prompt}"...`, i);
+        }
+
+        // Create a mock audio file for demonstration
+        // In a real implementation, this would be the actual generated audio
+        const mockAudioData = this.createMockAudioData();
+        const audioUrl = URL.createObjectURL(mockAudioData);
+        
+        const audioPlayer = document.getElementById('audioPlayer');
+        audioPlayer.src = audioUrl;
+        
+        // Store the audio URL for download
+        audioPlayer.dataset.audioUrl = audioUrl;
+    }
+
+    createMockAudioData() {
+        // Create a simple silent audio file for demonstration
+        // In a real implementation, this would be the actual generated audio
+        const audioContext = new (window.AudioContext || window.webkitAudioContext)();
+        const duration = 10; // seconds
+        const sampleRate = 44100;
+        const numberOfChannels = 2;
+        
+        // Create empty buffer
+        const frameCount = sampleRate * duration;
+        const arrayBuffer = new ArrayBuffer(44 + frameCount * numberOfChannels * 2);
+        
+        return new Blob([arrayBuffer], { type: 'audio/wav' });
+    }
+
+    downloadAudio() {
+        const audioPlayer = document.getElementById('audioPlayer');
+        const audioUrl = audioPlayer.dataset.audioUrl;
+        
+        if (!audioUrl) {
+            this.updateInstallationStatus('No audio to download!', 'error');
+            return;
+        }
+        
+        const a = document.createElement('a');
+        a.href = audioUrl;
+        a.download = 'diffrhythm2_generated_music.wav';
+        document.body.appendChild(a);
+        a.click();
+        document.body.removeChild(a);
+    }
+
+    updateProgress(text, percent) {
+        document.getElementById('progressText').textContent = text;
+        document.getElementById('progressPercent').textContent = `${percent}%`;
+        document.getElementById('progressFill').style.width = `${percent}%`;
+    }
+
+    showProgress() {
+        document.getElementById('progressContainer').classList.remove('hidden');
+    }
+
+    hideProgress() {
+        document.getElementById('progressContainer').classList.add('hidden');
+    }
+
+    updateInstallationStatus(message, type) {
+        const statusElement = document.getElementById('status');
+        statusElement.textContent = message;
+        statusElement.className = `status-message status-${type}`;
+    }
+}
+
+// Example loader function
+function loadExample(button) {
+    const exampleText = button.parentElement.querySelector('p').textContent;
+    document.getElementById('promptInput').value = exampleText;
+}
+
+// Initialize the application when the page loads
+document.addEventListener('DOMContentLoaded', () => {
+    new DiffRhythm2Installer();
+});
+
+// Web Worker for handling heavy computations (if needed)
+if (window.Worker) {
+    const worker = new Worker('worker.js');
+    
+    worker.onmessage = function(e) {
+        console.log('Worker message:', e.data);
+    };
+}