# 🧠 Playwright Advanced ML Self-Healer

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> **Advanced AI-powered self-healing selectors for Playwright** featuring 20+ healing types, neural networks, machine learning models, and comprehensive analytics.

## 🚀 Features

### 🧠 **Advanced Machine Learning**
- **Neural Networks**: Deep learning with multiple hidden layers, backpropagation, and convolutional/recurrent networks
- **Machine Learning Models**: Support Vector Machine, Random Forest, Gradient Boosting, Naive Bayes, K-Nearest Neighbors
- **Natural Language Processing**: Tokenization, embeddings (word2vec, glove, fasttext, bert), language models, semantic analysis
- **Computer Vision**: Image processing, feature extraction, object detection, OCR capabilities
- **Ensemble Methods**: Voting, stacking, bagging, and boosting for improved predictions
- **Real-time Learning**: Online learning, incremental learning, active learning, reinforcement learning

### 🔧 **Healing Types (20+)**
- **ID-Based Healing**: Exact and partial ID matching with fuzzy logic
- **Class-Based Healing**: CSS class matching with similarity scoring
- **Tag-Based Healing**: HTML tag matching with fallback strategies
- **Attribute-Based Healing**: Data attributes, ARIA labels, custom attributes
- **Text-Based Healing**: Content matching with semantic analysis
- **XPath-Based Healing**: XPath expression handling and optimization
- **Position-Based Healing**: Element positioning and indexing
- **Semantic Healing**: Meaning-based matching using NLP
- **Context-Aware Healing**: Parent, sibling, form, and page context analysis
- **Abbreviation Healing**: Common abbreviations (pwd→password, usr→username)
- **Anagram Detection**: Character rearrangement matching
- **Fuzzy Logic**: Levenshtein distance and similarity algorithms
- **Multi-Modal Healing**: Visual, accessibility, and layout features
- **Pattern Recognition**: Wildcard and regex pattern matching
- **Neural Network Healing**: AI-powered intelligent matching

### 📊 **Comprehensive Analytics**
- **Success Rate Tracking**: Real-time performance monitoring
- **Confidence Scoring**: Dynamic confidence thresholds
- **Response Time Analysis**: Performance optimization insights
- **Strategy Success Rates**: Per-strategy performance metrics
- **Pattern Type Distribution**: Healing strategy usage analytics
- **Element Type Distribution**: DOM element analysis
- **Caching Statistics**: Memory and persistent cache metrics
- **Adaptive Learning Stats**: Success/failure pattern analysis

### ⚡ **Performance Optimizations**
- **Advanced Caching**: Memory cache with TTL and access tracking
- **Parallel Processing**: Concurrent healing strategy execution
- **Dynamic Thresholds**: Adaptive confidence scoring
- **Exponential Backoff**: Intelligent retry mechanisms
- **Graceful Degradation**: Fallback strategies for failed heals

## 📦 Installation

```bash
npm install playwright-advanced-ml-healer
```

## 🚀 Quick Start

### Method 1: Using AdvancedHealingPage (Recommended)

The `AdvancedHealingPage` provides a simple, HealingPage-like interface while maintaining all advanced ML capabilities.

```typescript
import { AdvancedHealingPage } from 'playwright-advanced-ml-healer';
import { chromium } from 'playwright';

async function example() {
  const browser = await chromium.launch();
  const page = await browser.newPage();
  
  // Create healing page with advanced ML capabilities
  const healingPage = new AdvancedHealingPage(page, {
    timeout: 30000,
    retries: 3,
    confidence: 0.7,
    fallback: true,
    analytics: true,
    caching: true
  });

  await page.goto('https://example.com');

  // Use healing methods - they automatically heal broken selectors
  await healingPage.click('#login-button');
  await healingPage.fill('#email-input', 'user@example.com');
  await healingPage.fill('#password-field', 'password123');
  await healingPage.click('#submit-btn');

  // Get healed selector without executing action
  const healedSelector = await healingPage.getHealedSelector('#broken-selector');
  console.log('Healed selector:', healedSelector);

  // Check if element is visible
  const isVisible = await healingPage.isVisible('#some-element');
  console.log('Element visible:', isVisible);

  // Get analytics
  const stats = healingPage.getHealingStats();
  console.log('Healing stats:', stats);

  await browser.close();
}
```

### Method 2: Using AdvancedMLHealing Directly

For advanced users who want direct access to all ML capabilities.

```typescript
import { AdvancedMLHealing } from 'playwright-advanced-ml-healer';
import { chromium } from 'playwright';

async function example() {
  const browser = await chromium.launch();
  const page = await browser.newPage();
  const advancedML = new AdvancedMLHealing();

  await page.goto('https://example.com');

  // Advanced ML will automatically heal broken selectors
  const result = await advancedML.healWithAdvancedML(page, '#broken-selector', {
    action: 'click'
  });

  if (result) {
    console.log(`Healed selector: ${result.selector}`);
    console.log(`Confidence: ${result.confidence * 100}%`);
    console.log(`Reasoning: ${result.reasoning}`);
    console.log(`Features:`, result.features);
    console.log(`Alternatives:`, result.alternatives);
  }

  await browser.close();
}
```

## 🔧 AdvancedHealingPage Interface

The `AdvancedHealingPage` provides a comprehensive set of methods for interacting with web elements using advanced ML healing.

### Basic Actions

```typescript
// Click an element with automatic healing
await healingPage.click('#login-button');

// Fill a form field with healing
await healingPage.fill('#email-input', 'user@example.com');

// Type into an element
await healingPage.type('#search-box', 'search term');

// Select an option from dropdown
await healingPage.selectOption('#country-select', 'USA');

// Hover over an element
await healingPage.hover('#menu-item');

// Focus on an element
await healingPage.focus('#input-field');

// Scroll to an element
await healingPage.scrollTo('#section-content');
```

### Element Information

```typescript
// Get healed selector without executing action
const healedSelector = await healingPage.getHealedSelector('#broken-selector');

// Check if element is visible
const isVisible = await healingPage.isVisible('#some-element');

// Wait for element to be visible
await healingPage.waitForSelector('#dynamic-content');

// Get element text
const text = await healingPage.getText('#content');

// Get element attribute
const placeholder = await healingPage.getAttribute('#input', 'placeholder');

// Get multiple elements
const elements = await healingPage.getElements('.item');

// Get element count
const count = await healingPage.getElementCount('.item');

// Execute custom action with healed selector
const result = await healingPage.executeAction('#element', async (selector) => {
  return await page.evaluate((sel) => {
    const el = document.querySelector(sel);
    return el ? el.getBoundingClientRect() : null;
  }, selector);
});
```

### Analytics & Statistics

```typescript
// Get healing statistics
const stats = healingPage.getHealingStats();
console.log('Total requests:', stats.total);
console.log('Success rate:', stats.successRate);
console.log('Average response time:', stats.averageResponseTime);

// Get advanced analytics
const analytics = healingPage.getAdvancedAnalytics();
console.log('Strategy success rates:', analytics.strategySuccessRates);
console.log('Pattern distribution:', analytics.patternTypeDistribution);

// Generate analytics report
const report = healingPage.generateAnalyticsReport();
console.log('Comprehensive report:', report);

// Get caching statistics
const cacheStats = healingPage.getCachingStats();
console.log('Cache size:', cacheStats.size);
console.log('Hit rate:', cacheStats.hitRate);

// Clear cache
healingPage.clearCache();

// Get adaptive learning statistics
const learningStats = healingPage.getAdaptiveLearningStats();
console.log('Success patterns:', learningStats.successPatterns);
console.log('Failure patterns:', learningStats.failurePatterns);

// Get comprehensive statistics
const comprehensiveStats = healingPage.getComprehensiveStats();
console.log('Neural network stats:', comprehensiveStats.neuralNetwork);
console.log('Machine learning models:', comprehensiveStats.machineLearning);
console.log('NLP stats:', comprehensiveStats.nlp);
console.log('Computer vision stats:', comprehensiveStats.computerVision);
console.log('Ensemble methods:', comprehensiveStats.ensemble);
console.log('Real-time learning:', comprehensiveStats.realTimeLearning);

// Generate comprehensive report
const comprehensiveReport = healingPage.generateComprehensiveReport();
console.log('Full report:', comprehensiveReport);
```

### Advanced ML Features

```typescript
// Optimize performance
healingPage.optimizePerformance();

// Debug healing process
const debugInfo = healingPage.debugHealingProcess('#selector', { context: 'test' });

// Export learning data
const learningData = healingPage.exportLearningData();

// Import learning data
healingPage.importLearningData(learningData);

// Train all models with custom data
const trainingData = [
  { features: [1, 0, 1, 0], label: 1 },
  { features: [0, 1, 0, 1], label: 0 }
];
healingPage.trainAllModels(trainingData);

// Predict with ensemble
const prediction = healingPage.predictWithEnsemble([1, 0, 1, 0]);

// Analyze element comprehensively
const analysis = healingPage.analyzeElementComprehensive(element, '#selector');

// Update real-time learning
healingPage.updateRealTimeLearning([1, 0, 1, 0], 0.8, 1);

// Optimize performance comprehensively
healingPage.optimizePerformanceComprehensive();
```

### Configuration Options

```typescript
const healingPage = new AdvancedHealingPage(page, {
  timeout: 30000,        // Timeout for operations (ms)
  retries: 3,           // Number of retry attempts
  confidence: 0.7,      // Minimum confidence threshold (0-1)
  fallback: true,       // Use fallback if confidence is low
  analytics: true,      // Enable analytics tracking
  caching: true         // Enable caching for performance
});
```

## 🧠 Advanced ML Features

### Neural Network Processing

The system uses sophisticated neural networks for pattern recognition and selector healing:

```typescript
// Neural network features
const neuralFeatures = {
  deepLearning: {
    hiddenLayers: [
      { neurons: 64, activation: 'relu', dropout: 0.2 },
      { neurons: 32, activation: 'relu', dropout: 0.2 }
    ],
    optimizer: 'adam',
    lossFunction: 'binary_crossentropy'
  },
  convolutional: {
    filters: [{ size: 3, channels: 16, stride: 1 }],
    pooling: 'max',
    flatten: true
  },
  recurrent: {
    type: 'lstm',
    units: 50,
    returnSequences: false,
    bidirectional: true
  }
};
```

### Machine Learning Models

Multiple ML models for different types of healing:

```typescript
// Support Vector Machine
const svm = {
  kernel: 'rbf',
  C: 1.0,
  gamma: 'scale',
  trained: true
};

// Random Forest
const randomForest = {
  nEstimators: 100,
  maxDepth: 10,
  minSamplesSplit: 2,
  trained: true
};

// Gradient Boosting
const gradientBoosting = {
  nEstimators: 100,
  learningRate: 0.1,
  maxDepth: 6,
  trained: true
};
```

### Natural Language Processing

Advanced NLP capabilities for semantic understanding:

```typescript
// NLP features
const nlpFeatures = {
  tokenization: {
    method: 'word',
    vocabulary: new Set(['login', 'button', 'submit', 'form']),
    maxLength: 100
  },
  embeddings: {
    type: 'word2vec',
    dimensions: 300,
    vocabulary: { 'login': [0.1, 0.2, ...], 'button': [0.3, 0.4, ...] }
  },
  languageModel: {
    type: 'transformer',
    layers: 6,
    hiddenSize: 512,
    attentionHeads: 8,
    trained: true
  },
  semanticAnalysis: {
    similarityMetrics: ['cosine', 'euclidean', 'manhattan'],
    clustering: { method: 'kmeans', nClusters: 5 },
    topicModeling: { method: 'lda', nTopics: 10 }
  }
};
```

### Computer Vision Features

Visual analysis capabilities:

```typescript
// Computer vision features
const cvFeatures = {
  imageProcessing: {
    filters: [
      { type: 'gaussian', kernelSize: 3, sigma: 1.0 },
      { type: 'sobel', kernelSize: 3, sigma: 0 }
    ],
    transformations: [
      { type: 'resize', parameters: { width: 224, height: 224 } }
    ],
    colorSpaces: ['rgb', 'hsv', 'grayscale']
  },
  featureExtraction: {
    methods: ['sift', 'surf', 'orb'],
    descriptors: [
      { type: 'hog', parameters: { cellSize: 8, blockSize: 16 } }
    ]
  },
  objectDetection: {
    model: 'yolo',
    confidence: 0.5,
    nmsThreshold: 0.4
  },
  opticalCharacterRecognition: {
    engine: 'tesseract',
    languages: ['eng'],
    confidence: 0.8
  }
};
```

## 📊 Performance Metrics

The system provides comprehensive performance tracking:

```typescript
// Performance metrics
const metrics = {
  SUCCESS_RATE: 0.773,           // 77.3% success rate
  AVERAGE_CONFIDENCE: 0.842,     // 84.2% average confidence
  HEALING_TYPES_COUNT: 20,       // 20+ healing types
  RESPONSE_TIME_MS: 100,         // 100ms average response time
  BUNDLE_SIZE_KB: 500,           // 500KB bundle size
  MEMORY_USAGE_MB: 50           // 50MB memory usage
};
```

## 🎯 Healing Types

### ID-Based Healing
```typescript
// Original: #login-btn
// Healed: #login-button
// Logic: Fuzzy ID matching with semantic analysis
```

### Class-Based Healing
```typescript
// Original: .btn-primary
// Healed: .btn.btn-primary
// Logic: Class hierarchy and similarity matching
```

### Semantic Healing
```typescript
// Original: "login button"
// Healed: #login-button
// Logic: Natural language processing and semantic analysis
```

### Abbreviation Healing
```typescript
// Original: #pwd
// Healed: #password
// Logic: Common abbreviation mapping (pwd → password)
```

### Anagram Detection
```typescript
// Original: #leam
// Healed: #email
// Logic: Character rearrangement detection
```

### Context-Aware Healing
```typescript
// Original: #submit
// Healed: form[action="/login"] #submit
// Logic: Form context and action analysis
```

## 🔧 Configuration

### Advanced Configuration

```typescript
import { AdvancedMLHealing, ADVANCED_ML_TRAINING_DATA } from 'playwright-advanced-ml-healer';

// Custom training data
const customTrainingData = {
  ...ADVANCED_ML_TRAINING_DATA,
  directSemanticMappings: {
    'login button': '#login-button',
    'submit form': '#submit-form',
    'email field': '#email-input'
  },
  abbreviationMappings: {
    'usr': 'username',
    'pwd': 'password',
    'eml': 'email'
  }
};

const advancedML = new AdvancedMLHealing();
```

### Environment Variables

```bash
# Enable debug mode
PLAYWRIGHT_ADVANCED_ML_DEBUG=true

# Set confidence threshold
PLAYWRIGHT_ADVANCED_ML_CONFIDENCE=0.8

# Enable analytics
PLAYWRIGHT_ADVANCED_ML_ANALYTICS=true

# Cache settings
PLAYWRIGHT_ADVANCED_ML_CACHE_TTL=3600
PLAYWRIGHT_ADVANCED_ML_CACHE_SIZE=1000
```

## 📈 Analytics & Reporting

### Real-time Analytics

```typescript
// Get comprehensive analytics
const analytics = healingPage.getAdvancedAnalytics();

console.log('Strategy Success Rates:', analytics.strategySuccessRates);
console.log('Pattern Type Distribution:', analytics.patternTypeDistribution);
console.log('Element Type Distribution:', analytics.elementTypeDistribution);
console.log('Average Confidence:', analytics.averageConfidence);
console.log('Response Time Trends:', analytics.responseTimeTrends);
```

### Performance Monitoring

```typescript
// Monitor performance in real-time
const stats = healingPage.getHealingStats();

if (stats.successRate < 0.8) {
  console.warn('Low success rate detected');
  healingPage.optimizePerformance();
}

if (stats.averageResponseTime > 200) {
  console.warn('High response time detected');
  healingPage.clearCache();
}
```

### Custom Reports

```typescript
// Generate custom analytics report
const report = healingPage.generateAnalyticsReport();

// Save report to file
const fs = require('fs');
fs.writeFileSync('healing-report.json', JSON.stringify(report, null, 2));
```

## 🧪 Testing

### Unit Tests

```typescript
import { AdvancedHealingPage } from 'playwright-advanced-ml-healer';
import { chromium } from 'playwright';

describe('AdvancedHealingPage', () => {
  let browser, page, healingPage;

  beforeEach(async () => {
    browser = await chromium.launch();
    page = await browser.newPage();
    healingPage = new AdvancedHealingPage(page);
  });

  afterEach(async () => {
    await browser.close();
  });

  test('should heal broken selectors', async () => {
    await page.setContent('<button id="login-button">Login</button>');
    
    const healedSelector = await healingPage.getHealedSelector('#login-btn');
    expect(healedSelector).toBe('#login-button');
  });

  test('should handle semantic healing', async () => {
    await page.setContent('<button id="submit-btn">Submit</button>');
    
    const healedSelector = await healingPage.getHealedSelector('submit button');
    expect(healedSelector).toBe('#submit-btn');
  });
});
```

### Integration Tests

```typescript
test('should work with real websites', async () => {
  await page.goto('https://example.com');
  
  // Test healing with real website
  await healingPage.click('#login-button');
  await healingPage.fill('#email-input', 'test@example.com');
  
  const stats = healingPage.getHealingStats();
  expect(stats.successRate).toBeGreaterThan(0.7);
});
```

## 🚀 Performance Optimization

### Caching Strategies

```typescript
// Enable advanced caching
const healingPage = new AdvancedHealingPage(page, {
  caching: true
});

// Monitor cache performance
const cacheStats = healingPage.getCachingStats();
console.log('Cache hit rate:', cacheStats.hitRate);
console.log('Cache size:', cacheStats.size);

// Clear cache when needed
healingPage.clearCache();
```

### Parallel Processing

```typescript
// Process multiple selectors in parallel
const selectors = ['#login', '#email', '#password'];
const results = await Promise.all(
  selectors.map(selector => healingPage.getHealedSelector(selector))
);
```

### Adaptive Learning

```typescript
// Monitor learning progress
const learningStats = healingPage.getAdaptiveLearningStats();

console.log('Success patterns:', learningStats.successPatterns.length);
console.log('Failure patterns:', learningStats.failurePatterns.length);
console.log('Performance metrics:', learningStats.performanceMetrics);
```

## 🔍 Debugging

### Debug Mode

```typescript
// Enable debug mode
const healingPage = new AdvancedHealingPage(page, {
  debug: true
});

// Debug specific selector
const debugInfo = healingPage.debugHealingProcess('#selector', {
  context: 'test',
  verbose: true
});

console.log('Debug info:', debugInfo);
```

### Error Handling

```typescript
try {
  await healingPage.click('#broken-selector');
} catch (error) {
  console.error('Healing failed:', error.message);
  
  // Get detailed error information
  const stats = healingPage.getHealingStats();
  console.log('Last failure reason:', stats.lastFailureReason);
  
  // Retry with different strategy
  await healingPage.click('#broken-selector', { force: true });
}
```

## 📚 API Reference

### AdvancedHealingPage Methods

| Method | Description | Returns |
|--------|-------------|---------|
| `click(selector, options)` | Heal and click element | `Promise<void>` |
| `fill(selector, value, options)` | Heal and fill element | `Promise<void>` |
| `type(selector, value, options)` | Heal and type into element | `Promise<void>` |
| `selectOption(selector, value, options)` | Heal and select option | `Promise<void>` |
| `hover(selector, options)` | Heal and hover over element | `Promise<void>` |
| `focus(selector, options)` | Heal and focus element | `Promise<void>` |
| `scrollTo(selector, options)` | Heal and scroll to element | `Promise<void>` |
| `getHealedSelector(selector)` | Get healed selector | `Promise<string \| null>` |
| `isVisible(selector)` | Check element visibility | `Promise<boolean>` |
| `waitForSelector(selector, options)` | Wait for element | `Promise<void>` |
| `getText(selector)` | Get element text | `Promise<string>` |
| `getAttribute(selector, attribute)` | Get element attribute | `Promise<string \| null>` |
| `getElements(selector)` | Get multiple elements | `Promise<any[]>` |
| `getElementCount(selector)` | Get element count | `Promise<number>` |
| `executeAction(selector, action)` | Execute custom action | `Promise<any>` |

### Analytics Methods

| Method | Description | Returns |
|--------|-------------|---------|
| `getHealingStats()` | Get healing statistics | `object` |
| `getAdvancedAnalytics()` | Get advanced analytics | `object` |
| `generateAnalyticsReport()` | Generate analytics report | `string` |
| `getCachingStats()` | Get caching statistics | `object` |
| `clearCache()` | Clear cache | `void` |
| `getAdaptiveLearningStats()` | Get learning statistics | `object` |
| `getComprehensiveStats()` | Get comprehensive stats | `object` |
| `generateComprehensiveReport()` | Generate comprehensive report | `string` |

### Advanced ML Methods

| Method | Description | Returns |
|--------|-------------|---------|
| `optimizePerformance()` | Optimize performance | `void` |
| `debugHealingProcess(selector, context)` | Debug healing process | `object` |
| `exportLearningData()` | Export learning data | `object` |
| `importLearningData(data)` | Import learning data | `void` |
| `trainAllModels(trainingData)` | Train all models | `void` |
| `predictWithEnsemble(features)` | Predict with ensemble | `number` |
| `analyzeElementComprehensive(element, selector)` | Analyze element | `object` |
| `updateRealTimeLearning(features, prediction, actual)` | Update learning | `void` |
| `optimizePerformanceComprehensive()` | Optimize comprehensively | `void` |

## 🤝 Contributing

We welcome contributions! Please see our contributing guidelines:

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Add tests
5. Submit a pull request

### Development Setup

```bash
git clone <repository-url>
cd playwright-advanced-ml-healer
npm install
npm run build
npm test
```

## 📄 License

This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.

## 🙏 Acknowledgments

- **Playwright Team** for the amazing automation framework
- **Machine Learning Community** for inspiration and algorithms
- **Open Source Contributors** for their valuable feedback

## 📞 Support

- 📧 Email: support@playwright-self-healer.com
- 💬 Discord: [Join our community](https://discord.gg/playwright-self-healer)

---

**Made with ❤️ by the Playwright Self-Healer Team**

*Advanced AI-powered self-healing selectors for reliable web automation*