# Project Progress

## ✅ Completed Features

### Core Functionality
- **PDF Letterhead Merging**: Fully functional PDF-over-PDF merging with multiple blend modes
- **Markdown to PDF**: Complete Markdown processing with letterhead integration
- **Smart Margin Detection**: Automatic detection of letterhead content area to avoid overlaps
- **Multi-page Letterhead**: Support for different first/subsequent page designs
- **CSS Styling**: Custom CSS support for Markdown rendering with defaults

### Installation Architecture (RESTRUCTURED ✅)
- **Unified AppleScript Template**: Single template handles both dev and production modes
- **Development Mode Detection**: Uses `dev_mode` marker file with Python path
- **Production Mode**: Uses uvx with pinned version for reliability
- **Resource Management**: Centralized handling of letterhead, CSS, and icons
- **Semantic Versioning**: Single source of truth in Makefile

### Development Workflow
- **Local Development Droplets**: `make test-dev-droplet` creates development droplets
- **Testing Framework**: Comprehensive test suite with multiple Python versions
- **Clean Separation**: Development vs production droplet creation clearly separated

### Modern CLI Interface
- **uvx Integration**: `uvx mac-letterhead install` for production droplets
- **Development Flags**: `--dev` flag for local development droplets
- **CSS Support**: `--css` parameter for custom Markdown styling
- **Flexible Output**: Configurable droplet names and output directories

## 📦 Package Structure (CLEANED UP)

```
Mac-letterhead/
├── letterhead_pdf/           # Main package (CLEAN)
│   ├── __init__.py
│   ├── __main__.py
│   ├── main.py              # CLI interface
│   ├── pdf_merger.py        # PDF merging operations
│   ├── pdf_utils.py         # PDF utilities
│   ├── markdown_processor.py # Markdown to PDF conversion
│   ├── exceptions.py        # Custom exceptions
│   ├── log_config.py        # Logging configuration
│   ├── installation/        # Modular installation system
│   │   ├── __init__.py
│   │   ├── droplet_builder.py    # Main orchestrator
│   │   ├── applescript_generator.py # Script generation
│   │   ├── resource_manager.py   # Resource handling
│   │   ├── macos_integration.py  # macOS app bundle creation
│   │   ├── validator.py          # Droplet validation
│   │   └── templates/
│   │       └── unified_droplet.applescript # Single template
│   └── resources/           # Essential resources only
│       ├── __init__.py
│       ├── defaults.css     # Default Markdown styling
│       ├── Mac-letterhead.icns # Application icon
│       └── icon.png         # Alternative icon
├── tests/                   # All tests organized here
│   ├── test_pdf_utils.py    # PDF utility tests
│   ├── files/               # Test files
│   └── utils/               # Test utilities
├── tools/                   # Development utilities
│   └── analyze_letterhead.py # Letterhead analysis tool
├── memory-bank/             # Project documentation
└── [project files: README.md, pyproject.toml, etc.]
```

## 🔧 Current Development State

### Version: 0.10.1 (Published)
- Unified droplet architecture implemented
- CSS support added
- Development/production separation complete
- All tests passing

### Active Features
- **Production Droplets**: Via `uvx mac-letterhead install`
- **Development Droplets**: Via `--dev` flag with local Python
- **CSS Support**: Custom styling for Markdown documents
- **Comprehensive Testing**: Multiple Python versions and dependency scenarios

### Quality Assurance
- **Makefile Automation**: Complete build, test, and publish pipeline
- **Git Integration**: Automatic versioning and tagging
- **PyPI Publishing**: Automated release via GitHub Actions
- **Local Testing**: Development droplet testing before publication

## 🎯 Architectural Improvements Made

### 1. Unified Template System
- **Before**: Separate development and production AppleScript templates
- **After**: Single unified template with runtime mode detection
- **Benefit**: Eliminates duplication and maintenance overhead

### 2. Development Mode Detection
- **Implementation**: `dev_mode` marker file contains Python interpreter path
- **Runtime**: AppleScript reads file to determine execution mode
- **Result**: Same droplet can run in dev or production mode

### 3. Resource Management
- **Centralized**: All resource handling in ResourceManager class
- **Flexible**: Supports custom CSS, default fallbacks, and development markers
- **Robust**: Validation and error handling for all resource operations

### 4. Semantic Versioning
- **Single Source**: Version defined in `__init__.py`
- **Makefile Integration**: Automated version bumping and release
- **Git Tagging**: Automatic tag creation and pushing

### 5. Testing Infrastructure
- **Local Development**: `make test-dev-droplet` for rapid testing
- **Multi-environment**: Testing across different Python setups
- **CI/CD**: Automated testing and publishing pipeline

## 🚀 Current Capabilities

### For End Users
```bash
# Install production droplet
uvx mac-letterhead install ~/stationery.pdf --name "My Letterhead"

# With custom CSS
uvx mac-letterhead install ~/stationery.pdf --css ~/style.css --name "Styled Letterhead"
```

### For Developers
```bash
# Create development droplet
uv run python -m letterhead_pdf.main install ~/stationery.pdf --dev --name "Test Droplet"

# Run tests
make test-dev-droplet

# Publish new version
make publish
```

### Droplet Usage
1. **Drag & Drop**: PDF or Markdown files onto the droplet
2. **Automatic Processing**: Content merged with letterhead
3. **Smart Placement**: Content positioned to avoid letterhead overlap
4. **Output**: Processed files saved to Desktop

## 📋 Technical Excellence

### Code Quality
- **Type Hints**: Throughout codebase for better IDE support
- **Error Handling**: Comprehensive exception handling with custom types
- **Logging**: Structured logging for debugging and monitoring
- **Documentation**: Detailed docstrings and architectural documentation

### macOS Integration
- **App Bundles**: Proper macOS application structure
- **Icons**: Professional application icons (ICNS and PNG)
- **Permissions**: Proper file access handling
- **Notifications**: User feedback via macOS notification system

### Maintainability
- **Modular Design**: Clean separation of concerns
- **Configuration**: Centralized settings and defaults
- **Testing**: Comprehensive test coverage
- **CI/CD**: Automated quality assurance

The project restructuring is now complete with a clean, maintainable architecture that supports both development and production workflows efficiently.
