Resume-Matcher Structure
Project Tree Structure with Design Pattern Mapping
resume-matcher/
├── 📁 backend/ # FastAPI Backend Service
│ ├── 📁 app/ # Main Application Package
│ │ ├── 📁 core/ # 🎭 FACADE + 🏗️ FACTORY + ⚙️ CONFIG
│ │ │ ├── facade.py # Facade Pattern (unified API interface)
│ │ │ ├── config.py # Configuration Pattern
│ │ │ └── dependencies.py # Dependency injection
│ │ │
│ │ ├── 📁 parsers/ # 🏭 FACTORY + 🔌 ADAPTER PATTERNS
│ │ │ ├── base_parser.py # Abstract base for all parsers
│ │ │ ├── parser_factory.py # Factory Pattern (document type selection)
│ │ │ ├── pdf_parser.py # Adapter: PDF document processing
│ │ │ ├── docx_parser.py # Adapter: DOCX document processing
│ │ │ ├── txt_parser.py # Adapter: Plain text processing
│ │ │ └── doc_parser.py # Adapter: Legacy DOC format
│ │ │
│ │ ├── 📁 analyzers/ # 🎯 STRATEGY + 📋 TEMPLATE METHOD
│ │ │ ├── base_analyzer.py # Template Method (analysis workflow)
│ │ │ ├── ats_analyzer.py # Strategy: ATS compatibility analysis
│ │ │ ├── keyword_analyzer.py # Strategy: Keyword extraction/matching
│ │ │ ├── content_analyzer.py # Strategy: Content quality analysis
│ │ │ └── scoring_analyzer.py # Strategy: Match score calculation
│ │ │
│ │ ├── 📁 ai/ # 🔌 ADAPTER + 🎯 STRATEGY
│ │ │ ├── llm_adapter.py # Adapter Pattern (AI model abstraction)
│ │ │ ├── ollama_adapter.py # Adapter: Local Ollama integration
│ │ │ ├── openai_adapter.py # Adapter: OpenAI API integration
│ │ │ ├── anthropic_adapter.py # Adapter: Anthropic API integration
│ │ │ └── ai_service.py # Strategy: AI provider selection
│ │ │
│ │ ├── 📁 recommendations/ # 🏗️ BUILDER + 🔧 COMMAND
│ │ │ ├── recommendation_builder.py # Builder Pattern (flexible rec creation)
│ │ │ ├── recommendation_engine.py # Template Method (rec generation)
│ │ │ ├── commands/ # Command Pattern implementation
│ │ │ │ ├── base_command.py # Abstract command interface
│ │ │ │ ├── keyword_command.py # Command: Keyword recommendations
│ │ │ │ ├── format_command.py # Command: Formatting suggestions
│ │ │ │ └── content_command.py # Command: Content improvements
│ │ │ └── invoker.py # Command invoker and history
│ │ │
│ │ ├── 📁 observers/ # 👁️ OBSERVER PATTERN
│ │ │ ├── analysis_observer.py # Observer interface
│ │ │ ├── progress_observer.py # Observer: Progress tracking
│ │ │ ├── ui_observer.py # Observer: Real-time UI updates
│ │ │ └── logging_observer.py # Observer: Analysis logging
│ │ │
│ │ ├── 📁 models/ # 📊 DATA MODELS
│ │ │ ├── resume_model.py # Resume data structure
│ │ │ ├── job_description_model.py# Job description data structure
│ │ │ ├── analysis_result_model.py# Analysis results structure
│ │ │ └── recommendation_model.py # Recommendation data structure
│ │ │
│ │ ├── 📁 api/ # 🎭 FACADE + 🌐 REST API
│ │ │ ├── routes/ # API route definitions
│ │ │ │ ├── analysis.py # Analysis endpoints
│ │ │ │ ├── upload.py # File upload endpoints
│ │ │ │ └── recommendations.py # Recommendation endpoints
│ │ │ └── middleware.py # CORS, auth, logging middleware
│ │ │
│ │ ├── 📁 database/ # 💾 DATA PERSISTENCE
│ │ │ ├── connection.py # Database connection management
│ │ │ ├── models.py # SQLAlchemy models
│ │ │ └── repositories/ # Repository pattern
│ │ │ ├── resume_repository.py
│ │ │ └── analysis_repository.py
│ │ │
│ │ └── main.py # FastAPI application entry point
│ │
│ ├── 📁 tests/ # Testing Infrastructure
│ └── requirements.txt # Python dependencies
│
├── 📁 frontend/ # Next.js Frontend Application
│ ├── 📁 src/ # Source Code
│ │ ├── 📁 app/ # Next.js App Router
│ │ │ ├── upload/ # File upload page
│ │ │ ├── analysis/ # Analysis results page
│ │ │ └── recommendations/ # Recommendations page
│ │ │
│ │ ├── 📁 components/ # React Components
│ │ │ ├── upload/ # 👁️ OBSERVER (progress updates)
│ │ │ │ ├── FileUpload.tsx # Observer: File upload progress
│ │ │ │ └── UploadProgress.tsx # Observer: Real-time progress
│ │ │ │
│ │ │ ├── analysis/ # 🎨 PRESENTATION LAYER
│ │ │ │ ├── AnalysisResults.tsx # Results display component
│ │ │ │ ├── ScoreCard.tsx # Score visualization
│ │ │ │ └── AnalysisCharts.tsx # Data visualization
│ │ │ │
│ │ │ └── recommendations/ # 🔧 COMMAND PATTERN UI
│ │ │ ├── RecommendationList.tsx # Recommendations display
│ │ │ ├── ActionableItem.tsx # Command: Apply recommendation
│ │ │ └── RecommendationCard.tsx # Individual recommendation UI
│ │ │
│ │ ├── 📁 services/ # 🔌 ADAPTER + 🎯 STRATEGY
│ │ │ ├── api_client.py # Adapter: Backend API communication
│ │ │ ├── file_service.py # Strategy: File handling strategies
│ │ │ └── notification_service.py # Observer: User notifications
│ │ │
│ │ ├── 📁 hooks/ # React Custom Hooks
│ │ │ ├── useAnalysis.ts # Analysis state management
│ │ │ ├── useFileUpload.ts # File upload state
│ │ │ └── useRecommendations.ts # Recommendations state
│ │ │
│ │ └── 📁 utils/ # Utility Functions
│ │ ├── formatters.ts # Data formatting utilities
│ │ └── validators.ts # Input validation
│ │
│ ├── 📁 public/ # Static Assets
│ ├── next.config.js # Next.js configuration
│ ├── tailwind.config.js # Tailwind CSS configuration
│ └── package.json # Node.js dependencies
│
├── 📁 docs/ # Documentation
│ ├── api.md # API documentation
│ ├── setup.md # Setup instructions
│ └── architecture.md # Architecture overview
│
├── 📁 scripts/ # Utility Scripts
│ ├── setup.sh # Environment setup
│ └── deploy.sh # Deployment script
│
├── docker-compose.yml # Docker containerization
├── .env.example # Environment variables template
└── README.md # Project documentationDesign Pattern Interactions & Data Flow
┌─────────────────────────────────────────────────────────────────────┐
│ 🌐 FRONTEND (Next.js) │
│ ┌─────────────────────────────────────────────────────────────┐ │
│ │ 👁️ OBSERVER PATTERN (Real-time Updates) │ │
│ │ FileUpload ──► ProgressBar ──► AnalysisResults │ │
│ │ │ │ │ │ │
│ │ ▼ ▼ ▼ │ │
│ │ File State Progress State Results State │ │
│ └─────────────────────────────────────────────────────────────┘ │
└──┬──────────────────────────────────────────────────────────────────┘
│ 🔌 API Adapter
▼
┌─────────────────────────────────────────────────────────────────────┐
│ 🎭 BACKEND FACADE (FastAPI) │
│ ┌─────────────────────────────────────────────────────────────┐ │
│ │ Unified API Interface │ │
│ │ /upload ──► /analyze ──► /recommendations │ │
│ │ │ │ │ │ │
│ │ ▼ ▼ ▼ │ │
│ │ File Handle Analysis Req Recommendation Req │ │
│ └─────────────────────────────────────────────────────────────┘ │
└──┬──────────────────────────────────────────────────────────────────┘
│
▼
┌─────────────────────────────────────────────────────────────────────┐
│ 🏭 DOCUMENT PROCESSING PIPELINE │
│ │
│ 🏗️ FACTORY PATTERN 🔌 ADAPTER PATTERN │
│ ┌─────────────────┐ ┌─────────────────┐ │
│ │ Parser Factory │──creates──► │ Document Parser │ │
│ │ • PDF Parser │ │ • PDF Adapter │ │
│ │ • DOCX Parser │ │ • DOCX Adapter │ │
│ │ • TXT Parser │ │ • TXT Adapter │ │
│ └─────────────────┘ └─────────────────┘ │
│ │ │ │
│ ▼ ▼ │
│ 📄 STRUCTURED DOCUMENT DATA │
│ ┌─────────────────────────────────────────────────────────────┐ │
│ │ { text, metadata, sections, formatting } │ │
│ └─────────────────────────────────────────────────────────────┘ │
└──┬──────────────────────────────────────────────────────────────────┘
│
▼
┌─────────────────────────────────────────────────────────────────────┐
│ 📋 ANALYSIS ENGINE │
│ │
│ 📋 TEMPLATE METHOD 🎯 STRATEGY PATTERN │
│ ┌─────────────────┐ ┌─────────────────┐ │
│ │ Analysis Flow │──uses──────► │ Analysis │ │
│ │ 1. Validate │ │ Strategies │ │
│ │ 2. Analyze │◄────────────│ • ATS Checker │ │
│ │ 3. Score │ │ • Keyword Match │ │
│ │ 4. Recommend │ │ • Content Score │ │
│ └─────────────────┘ └─────────────────┘ │
│ │ │ │
│ ▼ ▼ │
│ 🔍 AI PROCESSING LAYER │
│ ┌─────────────────────────────────────────────────────────────┐ │
│ │ 🔌 AI ADAPTER PATTERN │ │
│ │ ┌─────────────┐ ┌─────────────┐ ┌─────────────┐ │ │
│ │ │ Ollama │ │ OpenAI │ │ Anthropic │ │ │
│ │ │ Adapter │ │ Adapter │ │ Adapter │ │ │
│ │ └─────────────┘ └─────────────┘ └─────────────┘ │ │
│ │ │ │ │ │ │
│ │ └───────────────┼───────────────┘ │ │
│ │ ▼ │ │
│ │ 🎯 AI Strategy Selection │ │
│ │ (Local vs Cloud, Cost vs Performance) │ │
│ └─────────────────────────────────────────────────────────────┘ │
└──┬──────────────────────────────────────────────────────────────────┘
│
▼
┌─────────────────────────────────────────────────────────────────────┐
│ 🏗️ RECOMMENDATION GENERATION │
│ │
│ 🏗️ BUILDER PATTERN 🔧 COMMAND PATTERN │
│ ┌─────────────────┐ ┌─────────────────┐ │
│ │ Recommendation │──creates──► │ Recommendation │ │
│ │ Builder │ │ Commands │ │
│ │ • Keywords │ │ • KeywordCmd │ │
│ │ • Formatting │ │ • FormatCmd │ │
│ │ • Content │ │ • ContentCmd │ │
│ └─────────────────┘ └─────────────────┘ │
│ │ │ │
│ ▼ ▼ │
│ 📊 COMPREHENSIVE RECOMMENDATIONS │
│ ┌─────────────────────────────────────────────────────────────┐ │
│ │ { score, improvements, keywords, formatting, content } │ │
│ └─────────────────────────────────────────────────────────────┘ │
└──┬──────────────────────────────────────────────────────────────────┘
│
▼
┌─────────────────────────────────────────────────────────────────────┐
│ 👁️ OBSERVATION & MONITORING SYSTEM │
│ │
│ 📊 OBSERVER PATTERN │
│ ┌─────────────────┐ ┌─────────────────┐ ┌─────────────────┐ │
│ │ Progress │ │ UI Update │ │ Analysis │ │
│ │ Observer │ │ Observer │ │ Logger │ │
│ │ • File upload │ │ • Real-time │ │ • Performance │ │
│ │ • Analysis step │ │ progress │ │ • Results │ │
│ │ • Completion │ │ • State sync │ │ • Errors │ │
│ └─────────────────┘ └─────────────────┘ └─────────────────┘ │
│ │ │ │ │
│ └───────────────────────┼───────────────────────┘ │
│ ▼ │
│ 🔄 REAL-TIME USER EXPERIENCE │
│ ┌─────────────────────────────────────────────────────────────┐ │
│ │ • Live progress updates │ │
│ │ • Responsive feedback │ │
│ │ • Error handling and recovery │ │
│ │ • Seamless user experience │ │
│ └─────────────────────────────────────────────────────────────┘ │
└─────────────────────────────────────────────────────────────────────┘Pattern Synergies & System Properties
🔄 End-to-End Pattern Flow
USER UPLOAD
│
▼
🎭 FACADE (API Endpoint)
│ Simplifies complex document processing
▼
🏭 FACTORY + 🔌 ADAPTER
│ Selects parser, adapts to document format
▼
📋 TEMPLATE METHOD + 🎯 STRATEGY
│ Standardized analysis + Custom algorithms
▼
🔌 AI ADAPTER + 🎯 AI STRATEGY
│ Intelligent AI provider selection
▼
🏗️ BUILDER + 🔧 COMMAND
│ Flexible recommendation creation
▼
👁️ OBSERVER PATTERN
│ Real-time updates and monitoring
▼
ENHANCED RESUME + USER INSIGHTS🎯 Achieved System Capabilities
Pattern Combination
System Property
Real-World Benefit
Factory + Adapter
Multi-Format Support
Seamless PDF, DOCX, TXT, DOC processing
Strategy + Template Method
Flexible Analysis
Custom analysis while maintaining consistency
Facade + Observer
User Experience
Simple API with real-time feedback
Command + Builder
Actionable Results
Flexible, executable recommendations
Adapter + Strategy (AI)
Privacy-First AI
Local processing with cloud fallback
Observer + All Patterns
Transparent Operations
Complete visibility into analysis process
🏢 Enterprise Production Features
┌─────────────────────────────────────────────────────────────────┐
│ PRODUCTION CAPABILITIES │
├─────────────────────────────────────────────────────────────────┤
│ 🔒 Privacy-First Design │ Local AI + Adapter patterns │
│ 📊 Multi-Format Processing │ Factory + Adapter patterns │
│ ⚡ Real-Time Feedback │ Observer + Template Method │
│ 🎯 Intelligent Analysis │ Strategy + AI Adapter patterns │
│ 🔧 Actionable Results │ Command + Builder patterns │
│ 🏗️ Modular Architecture │ Facade + Factory patterns │
│ 📈 Scalable Processing │ Template Method + Strategy │
│ 🔄 Flexible Deployment │ Adapter + Configuration │
└─────────────────────────────────────────────────────────────────┘Key Architecture Insights
Why This Design Works
🎭 Facade Layer: Clean API interface hiding document processing complexity
🏭 Factory Ecosystem: Seamless multi-format document support
🎯 Strategy Network: Flexible analysis algorithms for different user needs
🔌 Adapter Integration: Privacy-focused local AI with cloud alternatives
👁️ Observer System: Transparent, real-time user experience
🏗️ Builder Flexibility: Customizable recommendation generation
Privacy-First Architecture Benefits
Local Processing: Ollama integration keeps sensitive data on-device
Flexible Deployment: Can run completely offline or with cloud augmentation
User Control: Choice between local privacy and cloud performance
Transparent Operations: Full visibility into analysis process
Data Security: No external dependencies for core functionality
Real-World Production Value
HR/Recruiting Industry: Addresses genuine need for ATS-optimized resumes
Privacy Compliance: Meets enterprise privacy requirements
Scalable Architecture: Can handle high-volume document processing
User-Centric Design: Intuitive interface for complex AI functionality
Extensible Platform: Easy to add new analysis types and AI providers
This architecture demonstrates how classic design patterns can be combined to create privacy-focused, user-friendly AI applications that solve real-world problems while maintaining professional software engineering standards.
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