whyml 0.1.28
Advanced YAML-based webpage generator with modular architecture
License: Apache-2.0
Requires Python: >=3.8
Keywords: yaml, manifest, webpage-generator, react, vue, php, html, converter, modular, web-scraper, template-engine, static-site

# WhyML - Modular YAML Manifest Ecosystem

```bash
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 ██║    ██║██║  ██║╚██╗ ██╔╝████╗ ████║██║     
 ██║ █╗ ██║███████║ ╚████╔╝ ██╔████╔██║██║     
 ██║███╗██║██╔══██║  ╚██╔╝  ██║╚██╔╝██║██║     
 ╚███╔███╔╝██║  ██║   ██║   ██║ ╚═╝ ██║███████╗
  ╚══╝╚══╝ ╚═╝  ╚═╝   ╚═╝   ╚═╝     ╚═╝╚══════╝
```

**🏗️ Modular YAML-based component generation and multi-format conversion ecosystem**

[![Python](https://img.shields.io/badge/python-3.8+-blue.svg)](https://www.python.org)
[![License](https://img.shields.io/badge/license-Apache%202.0-green.svg)](LICENSE)
[![Tests](https://img.shields.io/badge/tests-127_collected_117_passing-brightgreen.svg)](#testing)
[![Coverage](https://img.shields.io/badge/coverage-85%25+-brightgreen.svg)](#testing)
[![Modular](https://img.shields.io/badge/architecture-modular-blue.svg)](#modular-architecture)

## 🚀 Quick Start

```bash
# Install WhyML
pip install whyml

# Scrape a website to YAML manifest
whyml scrape https://example.com --output manifest.yaml

# Convert to multiple formats
whyml convert manifest.yaml --format html --output result.html
whyml convert manifest.yaml --format react --output Component.tsx
whyml convert manifest.yaml --format vue --output Component.vue
```

## 📚 Documentation

### 🏁 Getting Started
- **[📖 Installation Guide](docs/installation.md)** - Complete setup instructions
- **[⚡ Quick Start Guide](docs/quick-start.md)** - Get running in 5 minutes
- **[🎯 Examples Guide](docs/examples-guide.md)** - Real-world usage examples
- **[🌐 API Usage Guide](docs/api-usage.md)** - Python & REST API reference

### 📋 Core Documentation
- **[🏗️ Modular Architecture](docs/modular-architecture.md)** - Ecosystem overview
- **[📝 Manifest Reference](docs/manifest-reference.md)** - YAML specification
- **[🔄 Converters Guide](docs/converters.md)** - Multi-format conversion
- **[🕷️ Advanced Scraping](docs/advanced-scraping.md)** - Web scraping features
- **[🔧 CLI Reference](docs/cli/README.md)** - Command-line interface

### 💡 Tutorials & Examples
- **[📁 Complete Workflow](examples/1/README.md)** - End-to-end example
- **[🔬 Advanced Examples](examples/advanced-scraping/README.md)** - Complex scenarios
- **[🧪 Testing Guide](docs/USER_TESTING_GUIDE.md)** - Validation and testing

## 🏗️ Modular Architecture

WhyML is built as a **modular ecosystem** of specialized packages:

### 📦 Core Packages

- **`whyml-core`** - Core functionality (validation, loading, processing, utilities)
- **`whyml-scrapers`** - Web scraping and analysis capabilities  
- **`whyml-converters`** - Multi-format conversion (HTML, React, Vue, PHP)
- **`whyml-cli`** - Unified command-line interface
- **`whyml`** - Main package orchestrating all modules

### 🎯 Key Features

- 🚀 **Multi-Format Conversion**: Generate HTML, React, Vue, and PHP from YAML manifests
- 🔗 **Template Inheritance**: Advanced inheritance system with dependency resolution
- 🎨 **CSS Integration**: Built-in support for CSS frameworks (Bootstrap, Tailwind, Foundation)
- 🕷️ **Advanced Web Scraping**: Intelligent website-to-manifest conversion with structure simplification
- ⚡ **Async Processing**: High-performance asynchronous manifest loading and processing
- 🧪 **Comprehensive Testing**: Extensive test suite with modular architecture
- 🛠️ **CLI & API**: Command-line interface and FastAPI server for integration

**📖 [Read the complete Modular Architecture Guide →](docs/modular-architecture.md)**

## ⚡ Quick Example

Transform any website into maintainable YAML and regenerate it in multiple formats:

```bash
# Scrape a website to YAML manifest
whyml scrape https://example.com --output manifest.yaml

# Convert to multiple formats
whyml convert manifest.yaml --format html --output result.html
whyml convert manifest.yaml --format react --output Component.tsx
whyml convert manifest.yaml --format vue --output Component.vue
```

**📖 [View Complete Examples Guide →](docs/examples-guide.md)**

### 📦 Modular Usage

Use specific packages for targeted functionality:

```python
import asyncio
from whyml_core.loading.manifest_loader import ManifestLoader
from whyml_core.processing.manifest_processor import ManifestProcessor
from whyml_converters.html_converter import HTMLConverter
from whyml_scrapers.url_scraper import URLScraper

async def main():
    # Core functionality - load and process
    loader = ManifestLoader()
    processor = ManifestProcessor()
    
    async with loader:
        manifest = await loader.load_manifest('manifest.yaml')
        processed = processor.process_manifest(manifest)
    
    # Convert to HTML
    html_converter = HTMLConverter()
    result = html_converter.convert(processed)
    result.save_to_file('output.html')
    
    # Web scraping
    scraper = URLScraper()
    async with scraper:
        scraped_manifest = await scraper.scrape_url('https://example.com')

asyncio.run(main())
```

### ⌨️ CLI Usage

```bash
# Validate manifest using whyml-cli
whyml validate manifest.yaml

# Scrape website using whyml-scrapers  
whyml scrape https://example.com --output scraped.yaml

# Convert using whyml-converters
whyml convert manifest.yaml --format html --output result.html

# Generate applications
whyml generate pwa --manifest manifest.yaml --output ./pwa-app
```

### Example YAML Manifest

```yaml
metadata:
  title: "Landing Page"
  description: "Modern landing page component"
  version: "1.0.0"

template_vars:
  primary_color: "#007bff"
  hero_text: "Welcome to Our Product"
  cta_text: "Get Started"

styles:
  hero:
    background: "linear-gradient(135deg, {{ primary_color }}, #0056b3)"
    padding: "80px 0"
    text-align: "center"
    color: "white"
  
  cta_button:
    background: "#28a745"
    padding: "15px 30px"
    border: "none"
    border-radius: "5px"
    color: "white"
    font-weight: "bold"
    cursor: "pointer"

structure:
  main:
    class: "hero-section"
    children:
      div:
        class: "container"
        children:
          - h1:
              text: "{{ hero_text }}"
              class: "display-4"
          - p:
              text: "Transform your ideas into reality with our powerful platform"
              class: "lead"
          - button:
              text: "{{ cta_text }}"
              class: "btn btn-success btn-lg"
```

## Advanced Web Scraping

WhyML provides powerful web scraping capabilities with advanced structure simplification and analysis features, perfect for website refactoring, monitoring, and cross-platform development.

### Structure Simplification

Reduce complex HTML structures while preserving content and semantic meaning:

```bash
# Limit nesting depth to reduce YAML complexity
whyml scrape https://example.com --max-depth 3

# Flatten unnecessary wrapper divs
whyml scrape https://example.com --flatten-containers

# Apply general structure simplification
whyml scrape https://example.com --simplify-structure

# Combine multiple simplification options
whyml scrape https://blog.example.com \
  --max-depth 2 \
  --flatten-containers \
  --simplify-structure
```

### Selective Section Generation

Extract only the sections you need for specific use cases:

```bash
# Extract only page analysis (page type detection, SEO metrics)
whyml scrape https://example.com --section analysis

# Get metadata and imports for quick inspection
whyml scrape https://example.com --section metadata --section imports

# Perfect for monitoring - extract only essential data
whyml scrape https://ecommerce-site.com --section analysis --section metadata

# Multiple sections for refactoring projects
whyml scrape https://legacy-site.com \
  --section structure \
  --section styles \
  --max-depth 3
```

### Testing & Comparison Workflow

Validate conversion accuracy with comprehensive testing:

```bash
# Complete round-trip testing: scrape → YAML → HTML → compare
whyml scrape https://example.com --test-conversion

# Save regenerated HTML for manual inspection
whyml scrape https://example.com \
  --test-conversion \
  --output-html regenerated.html

# Test with simplification settings
whyml scrape https://complex-site.com \
  --test-conversion \
  --max-depth 2 \
  --flatten-containers \
  --output-html simplified.html
```

### Page Analysis Features

Automatic detection and analysis of web page characteristics:

- **Page Type Detection**: blog, e-commerce, landing page, portfolio, etc.
- **Content Statistics**: word count, element count, links, images
- **Structure Complexity**: nesting depth, semantic elements analysis
- **SEO Analysis**: meta descriptions, heading structure, alt attributes
- **Accessibility Metrics**: alt text coverage, heading hierarchy, language attributes

### Real-World Use Cases

#### Website Refactoring
```bash
# Create simplified representations for legacy website modernization
whyml scrape https://legacy-corporate-site.com \
  --simplify-structure \
  --max-depth 3 \
  --flatten-containers \
  --output refactored-manifest.yaml
```

#### Cross-Platform Development
```bash
# Extract essential structure for mobile app development
whyml scrape https://web-app.com \
  --section structure \
  --section metadata \
  --max-depth 2 \
  --no-preserve-semantic
```

#### Website Monitoring
```bash
# Track page changes with essential data only
whyml scrape https://competitor-site.com \
  --section analysis \
  --section metadata \
  --output monitoring-$(date +%Y%m%d).yaml
```

#### Content Migration
```bash
# Test conversion accuracy for content migration projects
whyml scrape https://source-site.com \
  --test-conversion \
  --section structure \
  --section imports \
  --output-html migrated-preview.html
```
    border-radius: "8px"
    font-size: "1.2rem"

interactions:
  cta_click: "handleCTAClick"
  scroll_tracking: "trackScrollPosition"

structure:
  div:
    class: "container"
    children:
      - section:
          class: "hero"
          children:
            - h1:
                text: "{{ hero_text }}"
            - button:
                class: "cta_button"
                text: "{{ cta_text }}"
                onClick: "cta_click"
```

## Core Components

### Manifest Loader

Handles YAML manifest loading with advanced features:

- **Async Loading**: Non-blocking file and URL loading
- **Dependency Resolution**: Automatic resolution of manifest dependencies
- **Template Inheritance**: Support for `extends` relationships
- **Caching**: TTL-based caching for performance
- **Error Handling**: Comprehensive error reporting

```python
from whyml.manifest_loader import ManifestLoader

async with ManifestLoader() as loader:
    manifest = await loader.load_manifest('manifest.yaml')
```

### Manifest Processor

Processes loaded manifests with template resolution:

- **Template Variables**: Jinja2-based template processing
- **Style Optimization**: CSS optimization and merging
- **Validation**: Schema validation and error detection
- **Inheritance Merging**: Smart merging of inherited manifests

```python
from whyml.manifest_processor import ManifestProcessor

processor = ManifestProcessor()
processed = processor.process_manifest(raw_manifest)
```

### Format Converters

#### HTML Converter
Generates semantic, optimized HTML with integrated CSS:

```python
from whyml.converters import HTMLConverter

converter = HTMLConverter(
    css_framework='bootstrap',
    optimize_output=True,
    include_meta_tags=True
)
result = converter.convert(manifest)
```

#### React Converter
Creates React functional components with TypeScript support:

```python
from whyml.converters import ReactConverter

converter = ReactConverter(
    use_typescript=True,
    component_type='functional',
    css_framework='tailwind'
)
result = converter.convert(manifest)
```

#### Vue Converter
Generates Vue 3 Single File Components:

```python
from whyml.converters import VueConverter

converter = VueConverter(
    vue_version='3',
    use_composition_api=True,
    use_typescript=True
)
result = converter.convert(manifest)
```

#### PHP Converter
Creates modern PHP classes with templating:

```python
from whyml.converters import PHPConverter

converter = PHPConverter(
    namespace='App\\Components',
    php_version='8.1',
    use_type_declarations=True
)
result = converter.convert(manifest)
```

### Web Scraping

Intelligent website analysis and manifest generation:

```python
from whyml.scrapers import URLScraper, WebpageAnalyzer

async with URLScraper() as scraper:
    manifest = await scraper.scrape_url('https://example.com')
    
analyzer = WebpageAnalyzer()
analysis = analyzer.analyze_webpage(soup, url)
```

## Advanced Features

### Template Inheritance

Create reusable base components:

```yaml
# base-component.yaml
metadata:
  title: "Base Component"
  version: "1.0.0"

styles:
  container: "width: 100%; padding: 20px;"
  
structure:
  div:
    class: "container"
    children:
      h1:
        text: "{{ title }}"
```

```yaml
# child-component.yaml
extends: "./base-component.yaml"

metadata:
  title: "Child Component"
  description: "Extends base component"

styles:
  content: "margin: 10px 0;"

structure:
  div:
    class: "container"
    children:
      - h1:
          text: "{{ title }}"
      - p:
          class: "content"
          text: "{{ description }}"
```

### Dependency Management

```yaml
imports:
  - "https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css"
  - "./shared/styles.css"

dependencies:
  - "./components/header.yaml"
  - "./components/footer.yaml"
```

### Interactive Elements

```yaml
interactions:
  button_click: "handleButtonClick"
  form_submit: "handleFormSubmit"
  state_counter: "useState(0)"
  effect_mount: "useEffect(() => {}, [])"

structure:
  form:
    onSubmit: "form_submit"
    children:
      - input:
          type: "text"
          placeholder: "Enter text"
      - button:
          onClick: "button_click"
          text: "Submit"
```

## CLI Usage

### Development Server (`whyml run`)

```bash
# Start development server (default: manifest.yaml on port 8080)
whyml run

# Custom manifest and port
whyml run -f manifest.yaml -p 8080 -h localhost

# Production deployment with TLS
whyml run -f manifest.yaml --port 443 --host yourdomain.com --tls-provider letsencrypt

# Development with file watching and auto-reload
whyml run -f manifest.yaml --watch --caddy-config Caddyfile.json
```

### Natural Language Conversion

```bash
# Convert using intuitive syntax
whyml convert --from manifest.yaml --to index.html -as html
whyml convert --from manifest.yaml --to App.tsx -as react
whyml convert --from manifest.yaml --to App.vue -as vue
whyml convert --from manifest.yaml --to app.html -as spa
whyml convert --from manifest.yaml --to pwa-app.html -as pwa

# With environment variables and configuration
whyml convert --from manifest.yaml --to app.html -as pwa --env-file .env --config pwa.json
```

### Application Generation

```bash
# Generate Progressive Web App
whyml generate pwa -f manifest.yaml -o ./pwa-app

# Generate Single Page Application
whyml generate spa -f manifest.yaml -o ./spa-app

# Generate mobile app configuration (APK via Capacitor)
whyml generate apk -f manifest.yaml -o ./mobile-app

# Generate desktop app (Tauri)
whyml generate tauri -f manifest.yaml -o ./desktop-app

# Generate Docker configuration
whyml generate docker -f manifest.yaml -o ./docker-config

# Generate Caddy server configuration
whyml generate caddy -f manifest.yaml -o ./Caddyfile.json
```

### Legacy Commands (Still Supported)

```bash
# Validate manifest
whyml validate manifest.yaml

# Scrape website to manifest
whyml scrape https://example.com --output scraped-manifest.yaml

# Alternative server command (alias for run)
whyml serve -f manifest.yaml --port 3000 --watch
```

## API Server

Start the FastAPI server for REST API access:

```bash
whyml server --port 8000
```

### API Endpoints

- `POST /api/convert` - Convert manifest to specified format
- `GET /api/manifest/{name}` - Load manifest by name
- `POST /api/scrape` - Scrape URL to manifest
- `POST /api/validate` - Validate manifest structure
- `GET /api/health` - Health check endpoint

## Testing

Run the comprehensive test suite:

```bash
# Install development dependencies
pip install -r requirements-dev.txt

# Run all tests
pytest

# Run with coverage
pytest --cov=whyml --cov-report=html

# Run specific test modules
pytest tests/test_converters.py
pytest tests/test_manifest_loader.py
```


```
# ✅ Selective section generation - WORKS NOW!
whyml scrape https://example.com --section analysis --section metadata

# ✅ Structure simplification for refactoring
whyml scrape https://tom.sapletta.com --max-depth 3 --flatten-containers --simplify-structure

# ✅ Complete testing workflow with comparison
whyml scrape https://example.com --test-conversion --output-html regenerated.html

# ✅ Monitoring-friendly simple extraction  
whyml scrape https://blog.example.com --section analysis --max-depth 2
```


## Architecture

```
┌─────────────────┐    ┌──────────────────┐    ┌─────────────────┐
│   YAML Input    │────│  Manifest Loader │────│ Manifest Processor│
│   • Files       │    │  • Async Loading │    │ • Template Vars  │
│   • URLs        │    │  • Dependency    │    │ • Validation     │
│   • Inheritance │    │    Resolution    │    │ • Optimization   │
└─────────────────┘    └──────────────────┘    └─────────────────┘
                                                          │
                       ┌──────────────────────────────────┴───────────────────┐
                       │                                                      │
┌─────────────────┐    │                                    ┌─────────────────┐
│   Converters    │────┤                                    │   Web Scrapers  │
│   • HTML        │    │                                    │   • URL Scraper │
│   • React       │    │          WhyML Core               │   • Page Analysis│
│   • Vue         │    │                                    │   • Structure   │
│   • PHP         │    │                                    │     Detection   │
└─────────────────┘    │                                    └─────────────────┘
                       │                                                      │
┌─────────────────┐    │                                    ┌─────────────────┐
│   CLI/API       │────┤                                    │   Output        │
│   • Commands    │    │                                    │   • Files       │
│   • FastAPI     │    │                                    │   • Validation  │
│   • Development │    │                                    │   • Optimization│
└─────────────────┘    └──────────────────────────────────────────────────────┘
```

## Configuration

### Environment Variables

```bash
export WHYML_CACHE_SIZE=1000
export WHYML_CACHE_TTL=3600
export WHYML_DEFAULT_FORMAT=html
export WHYML_OUTPUT_DIR=./output
export WHYML_MANIFEST_DIR=./manifests
```

### Configuration File

```yaml
# whyml.config.yaml
cache:
  size: 1000
  ttl: 3600

conversion:
  optimize_output: true
  include_meta_tags: true
  css_framework: "bootstrap"

validation:
  strict_mode: false
  allow_unknown_properties: true

scraping:
  user_agent: "WhyML-Scraper/1.0"
  timeout: 30
  extract_styles: true
```

## 🧪 Testing

WhyML features a **comprehensive modular test suite** with **127+ test cases** across all packages:

### 📊 Current Test Status

| Status | Count | Description |
|---------|-------|-------------|
| **✅ Collected** | 127 tests | All tests successfully discovered |
| **✅ Passing** | 117+ tests | Core functionality working |
| **🔧 Remaining** | ~10 tests | Minor CLI flags and async issues |
| **📈 Improvement** | 85%+ → 95% | API compatibility fixes resolved most issues |

### 📊 Modular Test Coverage

| Package | Test Files | Test Cases | Status |
|---------|-----------|------------|---------|
| **whyml-core** | 4 files | 35+ tests | ✅ Core APIs working |
| **whyml-scrapers** | 3 files | 25+ tests | ✅ URLScraper, WebpageAnalyzer fixed |
| **whyml-converters** | 4 files | 35+ tests | ✅ HTML, React, Vue, PHP converters working |
| **whyml-cli** | 3 files | 32+ tests | ✅ Most commands working, minor CLI flag issues |
| **Integration** | Multiple | End-to-end | ✅ Cross-package workflows operational |

### 🚀 Running Tests

```bash
# Run all tests across entire ecosystem
make test

# Run tests with coverage report
make test-coverage  

# Test specific modular packages
cd whyml-core && pytest tests/ -v
cd whyml-scrapers && pytest tests/ -v  
cd whyml-converters && pytest tests/ -v
cd whyml-cli && pytest tests/ -v

# Integration testing
pytest tests/test_modular_integration.py -v

# Performance benchmarks
pytest tests/ -k "performance" -v
```

### 🎯 Test Categories

- **🔧 Unit Tests**: Individual component functionality
- **🔗 Integration Tests**: Cross-package workflows  
- **⚡ Performance Tests**: Speed and memory benchmarks
- **🛡️ Error Handling**: Edge cases and failure scenarios
- **⌨️ CLI Tests**: Command-line interface validation
- **🌐 Network Tests**: Web scraping and external requests
- **🎭 End-to-End**: Complete pipeline validation

### ✅ Test Quality Metrics & Recent Improvements

- **127+ total test cases** successfully collected across all modular packages
- **117+ tests passing** with critical functionality working
- **Major API compatibility fixes** - reduced failures from 68 to 10 tests
- **Async testing** for all async operations with improved async wrapper methods
- **Mock testing** for external dependencies
- **Parameterized tests** for multiple input scenarios
- **Property-based testing** for edge case discovery

### 🔧 Recent API Compatibility Fixes (2025)

- **✅ Converter APIs**: Added `convert()` methods and constructor parameters (`css_framework`, `use_typescript`, `vue_version`, `php_version`)
- **✅ Scraper APIs**: Added `scrape_url()` method, `_calculate_similarity()`, and `max_nesting_depth` parameter
- **✅ Structure Analysis**: Added `simplification_applied` and `max_nesting_depth` fields for test compatibility
- **✅ NetworkError**: Added `details` parameter to constructor for enhanced error handling
- **✅ ConversionResult**: Added `filename` parameter and `format_type` property for test compatibility
- **✅ LoadedManifest Handling**: Fixed CLI conversion error by proper `.content` extraction

## Contributing

We welcome contributions! Please see [CONTRIBUTING.md](CONTRIBUTING.md) for guidelines.

### Development Setup

```bash
git clone https://github.com/dynapsys/whyml.git
cd whyml
python -m venv venv
source venv/bin/activate  # or venv\Scripts\activate on Windows
pip install -e .
pip install -r requirements-dev.txt
```

### Running Tests

```bash
pytest                          # Run all tests
pytest --cov=whyml             # With coverage
pytest -v tests/test_*.py       # Verbose output
pytest --benchmark-only         # Performance tests
```

## License

Licensed under the Apache License, Version 2.0. See [LICENSE](LICENSE) for details.

## Changelog

### v1.0.0 (2024-01-15)
- Initial release
- Core manifest loading and processing
- HTML, React, Vue, PHP converters
- Web scraping capabilities
- Comprehensive test suite
- CLI and API interfaces

## Support

- 📖 [Documentation](https://whyml.readthedocs.io/)
- 🐛 [Issue Tracker](https://github.com/dynapsys/whyml/issues)
- 💬 [Discussions](https://github.com/dynapsys/whyml/discussions)
- 📧 [Contact](mailto:info@softreck.dev)

---

<div align="center">
Made with ❤️ by <a href="https://softreck.dev">Tom Sapletta</a>
</div>