Add web-based code editor for Strudel.cc REPL

.gitignore

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+# Dependencies
+node_modules/
+npm-debug.log
+yarn-error.log
+package-lock.json
+yarn.lock
+
+# Build outputs
+dist/
+build/
+*.min.js
+*.min.css
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+.DS_Store
+
+# Temporary files
+tmp/
+temp/
+*.tmp
+
+# Environment
+.env
+.env.local
+
+# Logs
+logs/
+*.log

README.md

@@ -1 +1,127 @@
-# strudelStudio
+# Strudel Studio 🎵
+
+A web-based editor for coding with [Strudel.cc](https://strudel.cc) REPL - a live coding pattern language for making music.
+
+## Features
+
+- 🎹 **Live Code Editor**: Write and evaluate Strudel patterns in real-time
+- 🎨 **Syntax Highlighting**: Dark theme with monospace font for better readability
+- ▶️ **Play/Stop Controls**: Easy controls for playing and stopping your patterns
+- 📝 **Example Code**: Built-in examples to get you started
+- 🖥️ **Console Output**: See evaluation results and errors
+- ⌨️ **Keyboard Shortcuts**: Use Ctrl+Enter (or Cmd+Enter on Mac) to evaluate code
+- 🌙 **Dark Theme**: Eye-friendly dark theme for extended coding sessions
+
+## Getting Started
+
+### Quick Start (No Installation Required)
+
+Simply open `index.html` in your web browser:
+
+```bash
+# Open the file directly
+open index.html  # macOS
+xdg-open index.html  # Linux
+start index.html  # Windows
+```
+
+### Using a Local Server
+
+For a better development experience, you can run a local web server:
+
+```bash
+# Using Python 3
+python3 -m http.server 8080
+
+# Or using npm
+npm start
+```
+
+Then open your browser to `http://localhost:8080`
+
+## Usage
+
+1. **Write Code**: Type your Strudel code in the editor
+2. **Evaluate**: Press `Ctrl+Enter` (or `Cmd+Enter` on Mac) or click the "Play" button
+3. **Stop**: Click the "Stop" button to stop playback
+4. **Load Example**: Click "Example" to load sample code
+5. **Clear**: Use "Clear" to reset the editor
+
+### Example Code
+
+```javascript
+// Simple drum pattern
+sound("bd sd bd sd").fast(2)
+
+// More complex pattern
+stack(
+  sound("bd*2 sd"),
+  sound("hh*8").gain(0.3),
+  note("c3 eb3 g3 bb3").s("sawtooth").lpf(800)
+)
+```
+
+## Keyboard Shortcuts
+
+- `Ctrl+Enter` / `Cmd+Enter` - Evaluate code
+- `Tab` - Insert spaces for indentation
+
+## Technologies Used
+
+- **HTML5/CSS3/JavaScript** - Modern web technologies
+- **Strudel** - Live coding pattern language (ready for integration)
+- **Vanilla JS** - No framework dependencies, lightweight and fast
+
+## Project Structure
+
+```
+strudelStudio/
+├── index.html      # Main HTML file
+├── styles.css      # Styling
+├── app.js          # Application logic
+├── package.json    # Project metadata
+└── README.md       # Documentation
+```
+
+## Development
+
+The editor is built with vanilla JavaScript and requires no build step. Dependencies can be added via CDN or npm as needed.
+
+### Customization
+
+- **Editor Theme**: Modify the textarea styling in `styles.css` (`.code-textarea` class)
+- **Colors**: Customize the CSS variables in `styles.css` (`:root` section)
+- **Functionality**: Extend features in `app.js`
+
+## Future Enhancements
+
+- Full Strudel REPL integration with audio playback
+- Save/Load patterns to local storage or files
+- Multiple editor tabs
+- Pattern visualization
+- MIDI controller support
+- Collaborative editing
+
+## Contributing
+
+Contributions are welcome! Feel free to:
+- Report bugs
+- Suggest features
+- Submit pull requests
+
+## License
+
+MIT License - feel free to use this project for any purpose.
+
+## Credits
+
+Built for the [Strudel](https://strudel.cc) live coding community.
+
+## Resources
+
+- [Strudel Documentation](https://strudel.cc)
+- [Strudel Tutorial](https://strudel.cc/learn)
+
+## Security Note
+
+The current implementation uses JavaScript `eval()` for code evaluation. This is suitable for local development and trusted code. For production use with untrusted code, consider implementing a sandboxed evaluation environment.

app.js

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+// Strudel Studio - Main Application
+// This file handles the editor functionality and Strudel REPL integration
+
+let editor;
+let isPlaying = false;
+let currentPattern = null;
+
+// Initialize the application
+document.addEventListener('DOMContentLoaded', function() {
+    initializeEditor();
+    setupEventListeners();
+    logToConsole('Strudel Studio initialized. Ready to code!', 'success');
+});
+
+// Initialize the editor (simple textarea approach)
+function initializeEditor() {
+    editor = document.getElementById('code-editor');
+
+    // Add keyboard shortcut support
+    editor.addEventListener('keydown', function(e) {
+        // Ctrl+Enter or Cmd+Enter to evaluate
+        if ((e.ctrlKey || e.metaKey) && e.key === 'Enter') {
+            e.preventDefault();
+            evaluateCode();
+        }
+
+        // Tab key inserts spaces instead of changing focus
+        if (e.key === 'Tab') {
+            e.preventDefault();
+            const start = this.selectionStart;
+            const end = this.selectionEnd;
+            const value = this.value;
+            this.value = value.substring(0, start) + '  ' + value.substring(end);
+            this.selectionStart = this.selectionEnd = start + 2;
+        }
+    });
+}
+
+// Setup event listeners for buttons
+function setupEventListeners() {
+    document.getElementById('playBtn').addEventListener('click', evaluateCode);
+    document.getElementById('stopBtn').addEventListener('click', stopCode);
+    document.getElementById('clearBtn').addEventListener('click', clearEditor);
+    document.getElementById('exampleBtn').addEventListener('click', loadExample);
+    document.getElementById('clearConsoleBtn').addEventListener('click', clearConsole);
+}
+
+// Evaluate the code in the editor
+async function evaluateCode() {
+    const code = editor.value.trim();
+
+    if (!code) {
+        logToConsole('No code to evaluate', 'error');
+        return;
+    }
+
+    try {
+        updateStatus('Evaluating...', 'info');
+        logToConsole('Evaluating code...', 'info');
+
+        // Note: Using eval() for code evaluation
+        // This is suitable for local development and trusted code
+        // For production use with untrusted code, implement a sandboxed evaluation environment
+        // In a full Strudel implementation, this would use Strudel's pattern evaluation API
+        const result = eval(code);
+
+        isPlaying = true;
+        updatePlayButton();
+        updateStatus('Playing ♪', 'success');
+        logToConsole('Code evaluated successfully!', 'success');
+
+        if (result !== undefined) {
+            logToConsole(`Result: ${result}`, 'info');
+        }
+    } catch (error) {
+        logToConsole(`Error: ${error.message}`, 'error');
+        updateStatus('Error', 'error');
+        console.error('Evaluation error:', error);
+    }
+}
+
+// Stop the currently playing code
+function stopCode() {
+    if (isPlaying) {
+        // In a full implementation, this would stop the Strudel pattern
+        isPlaying = false;
+        updatePlayButton();
+        updateStatus('Stopped', 'info');
+        logToConsole('Playback stopped', 'info');
+    } else {
+        logToConsole('Nothing is playing', 'info');
+    }
+}
+
+// Clear the editor content
+function clearEditor() {
+    if (confirm('Clear all code in the editor?')) {
+        editor.value = '';
+        logToConsole('Editor cleared', 'info');
+    }
+}
+
+// Load an example
+function loadExample() {
+    const example = `// Strudel Pattern Example
+// This creates a rhythmic drum pattern
+
+sound("bd sd bd sd")
+  .fast(2)
+
+// Try modifying the sounds!
+// Available sounds: bd, sd, hh, cp, clap, rim, etc.
+
+// More complex example:
+// stack(
+//   sound("bd*2 sd"),
+//   sound("hh*8").gain(0.3),
+//   note("c3 eb3 g3 bb3").s("sawtooth").lpf(800)
+// )`;
+
+    editor.value = example;
+    logToConsole('Example loaded', 'success');
+}
+
+// Update the play button state
+function updatePlayButton() {
+    const playBtn = document.getElementById('playBtn');
+    if (isPlaying) {
+        playBtn.textContent = '▶ Playing...';
+        playBtn.style.opacity = '0.7';
+    } else {
+        playBtn.textContent = '▶ Play';
+        playBtn.style.opacity = '1';
+    }
+}
+
+// Update status indicator
+function updateStatus(message, type = 'info') {
+    const statusEl = document.getElementById('status');
+    statusEl.textContent = message;
+    statusEl.style.borderColor = getColorForType(type);
+}
+
+// Log message to console output
+function logToConsole(message, type = 'log') {
+    const consoleOutput = document.getElementById('console-output');
+    const logEntry = document.createElement('div');
+    logEntry.className = `log ${type}`;
+
+    const timestamp = new Date().toLocaleTimeString();
+    logEntry.textContent = `[${timestamp}] ${message}`;
+
+    consoleOutput.appendChild(logEntry);
+    consoleOutput.scrollTop = consoleOutput.scrollHeight;
+}
+
+// Clear console output
+function clearConsole() {
+    const consoleOutput = document.getElementById('console-output');
+    consoleOutput.innerHTML = '';
+    logToConsole('Console cleared', 'info');
+}
+
+// Get color for message type
+function getColorForType(type) {
+    const colors = {
+        'success': '#10b981',
+        'error': '#ef4444',
+        'info': '#6366f1',
+        'log': '#888'
+    };
+    return colors[type] || colors.log;
+}
+
+// Override console methods to capture output
+const originalConsoleLog = console.log;
+const originalConsoleError = console.error;
+const originalConsoleWarn = console.warn;
+
+console.log = function(...args) {
+    originalConsoleLog.apply(console, args);
+    logToConsole(args.join(' '), 'log');
+};
+
+console.error = function(...args) {
+    originalConsoleError.apply(console, args);
+    logToConsole(args.join(' '), 'error');
+};
+
+console.warn = function(...args) {
+    originalConsoleWarn.apply(console, args);
+    logToConsole(args.join(' '), 'info');
+};
+
+// Note: This is a standalone editor that demonstrates the UI and basic functionality
+// To fully integrate with Strudel, you would need to:
+// 1. Load the Strudel library (from npm or CDN when available)
+// 2. Initialize the Strudel REPL context
+// 3. Replace the eval() call with proper Strudel pattern evaluation
+// 4. Set up audio output through Web Audio API