# Implementation Plan: Website Cloning Platform

## Overview

This implementation plan breaks down the website cloning platform into discrete, manageable coding tasks. Each task builds incrementally toward a complete SaaS solution with crawling, scraping, code generation, and online IDE capabilities. The implementation follows a microservices architecture using TypeScript, Node.js, and modern web technologies.

## Tasks

- [x] 1. Project Setup and Core Infrastructure
  - Initialize monorepo structure with TypeScript configuration
  - Set up Docker containers for development environment
  - Configure PostgreSQL database with initial schema
  - Set up Redis for caching and job queues
  - Configure S3-compatible storage (MinIO for development)
  - _Requirements: 8.1, 8.2_

- [x] 1.1 Write property test for database connectivity
  - **Property 32: PostgreSQL Data Storage**
  - **Validates: Requirements 8.1**

- [-] 2. API Gateway and Authentication Service
  - [x] 2.1 Implement Express.js API Gateway with routing
    - Create gateway server with middleware pipeline
    - Implement request/response logging and validation
    - Set up CORS and security headers
    - _Requirements: 9.1, 9.2, 9.3_

  - [x] 2.2 Write property test for API rate limiting
    - **Property 39: API Rate Limiting Protection**
    - **Validates: Requirements 9.3**

  - [x] 2.3 Implement JWT-based authentication system
    - Create user registration and login endpoints
    - Implement JWT token generation and validation
    - Add password hashing and security measures
    - _Requirements: 9.1_

  - [x] 2.4 Write property test for multi-factor authentication
    - **Property 37: Multi-Factor Authentication Enforcement**
    - **Validates: Requirements 9.1**
    - **Status: Implemented with core MFA functionality working**

  - [x] 2.5 Implement role-based access control (RBAC)
    - Create permission system with roles and scopes
    - Add middleware for permission checking
    - Implement project-level access controls
    - _Requirements: 9.2_
    - **Status: Completed with comprehensive RBAC system**

  - [x] 2.6 Write property test for permission enforcement
    - **Property 38: Role-Based Permission Enforcement**
    - **Validates: Requirements 9.2**
    - **Status: All property tests passing**

- [ ] 3. Checkpoint - Core Infrastructure
  - Ensure all tests pass, verify database connections and authentication flow

- [x] 4. Intelligent Crawler Service
  - [x] 4.1 Implement core crawler with Puppeteer integration
    - Create Puppeteer browser pool management
    - Implement basic page navigation and content extraction
    - Add robots.txt parsing and respect mechanisms
    - _Requirements: 1.1, 1.2_
    - **Status: Completed with comprehensive crawler implementation**

  - [x] 4.2 Write property test for BFS page discovery
    - **Property 1: BFS Page Discovery**
    - **Validates: Requirements 1.1**
    - **Status: Property test implemented and passing**

  - [x] 4.3 Implement breadth-first search algorithm
    - Create URL queue management system
    - Implement link extraction and normalization
    - Add duplicate URL detection and filtering
    - _Requirements: 1.1, 1.5_
    - **Status: Completed as part of core crawler implementation**

  - [x] 4.4 Write property test for rate limiting compliance
    - **Property 2: Rate Limiting Compliance**
    - **Validates: Requirements 1.2**
    - **Status: Property test implemented and passing**

  - [x] 4.5 Add JavaScript execution and dynamic content capture
    - Implement page rendering with JavaScript execution
    - Add wait strategies for dynamic content loading
    - Capture single-page application states
    - _Requirements: 1.3_
    - **Status: Completed with comprehensive JavaScript handling**

  - [x] 4.6 Write property test for JavaScript content capture
    - **Property 3: JavaScript Content Capture**
    - **Validates: Requirements 1.3**
    - **Status: Property test implemented and passing**

  - [x] 4.7 Implement sitemap generation
    - Create hierarchical site structure representation
    - Generate comprehensive sitemap with relationships
    - Add metadata extraction for each page
    - _Requirements: 1.5_
    - **Status: Completed with XML and hierarchical sitemap generation**

  - [x] 4.8 Write property test for complete sitemap generation
    - **Property 4: Complete Sitemap Generation**
    - **Validates: Requirements 1.5**
    - **Status: Property test implemented and passing**

- [ ] 5. Visual Scraper Service
  - [ ] 5.1 Implement multi-viewport screenshot capture
    - Create viewport configuration management
    - Implement screenshot capture at multiple resolutions
    - Add full-page scrolling screenshot capability
    - _Requirements: 2.1, 2.4_

  - [ ] 5.2 Write property test for multi-viewport capture
    - **Property 5: Multi-Viewport Screenshot Capture**
    - **Validates: Requirements 2.1**

  - [ ] 5.3 Implement computed styles extraction
    - Extract all computed CSS styles for elements
    - Capture layout metrics and positioning data
    - Record animation and transition information
    - _Requirements: 2.4_

  - [ ] 5.4 Write property test for responsive breakpoint capture
    - **Property 8: Responsive Breakpoint Capture**
    - **Validates: Requirements 2.4**

- [ ] 6. Asset Extractor Service
  - [ ] 6.1 Implement comprehensive asset discovery
    - Create asset URL extraction from HTML, CSS, and JS
    - Implement asset type classification and validation
    - Add support for data URLs and inline assets
    - _Requirements: 2.2, 2.3_

  - [ ] 6.2 Write property test for complete asset extraction
    - **Property 6: Complete Asset Extraction**
    - **Validates: Requirements 2.2**

  - [ ] 6.3 Implement CSS dependency resolution
    - Parse @import statements recursively
    - Resolve relative URLs in CSS files
    - Handle CSS variables and custom properties
    - _Requirements: 2.3_

  - [ ] 6.4 Write property test for CSS dependency resolution
    - **Property 7: CSS Dependency Resolution**
    - **Validates: Requirements 2.3**

  - [ ] 6.5 Add asset optimization and compression
    - Implement image optimization (WebP conversion, compression)
    - Minify CSS and JavaScript files
    - Optimize fonts and media files
    - _Requirements: 2.5_

  - [ ] 6.6 Write property test for quality-preserving optimization
    - **Property 9: Quality-Preserving Asset Optimization**
    - **Validates: Requirements 2.5**

- [ ] 7. Checkpoint - Scraping Services
  - Ensure crawler and scraper services work together, verify asset extraction

- [ ] 8. Code Generator Service
  - [ ] 8.1 Implement HTML generation from visual data
    - Create semantic HTML structure from DOM analysis
    - Add accessibility attributes and ARIA labels
    - Generate clean, well-formatted markup
    - _Requirements: 3.1_

  - [ ] 8.2 Write property test for semantic HTML generation
    - **Property 10: Semantic HTML Generation**
    - **Validates: Requirements 3.1**

  - [ ] 8.3 Implement CSS modularization and optimization
    - Organize CSS into logical modules and components
    - Remove unused CSS rules and optimize selectors
    - Generate responsive CSS with proper media queries
    - _Requirements: 3.2, 3.4_

  - [ ] 8.4 Write property test for CSS modularization
    - **Property 11: CSS Modularization and Optimization**
    - **Validates: Requirements 3.2**

  - [ ] 8.5 Implement JavaScript refactoring and modularization
    - Extract inline scripts into organized modules
    - Refactor event handlers and DOM manipulation
    - Create maintainable JavaScript architecture
    - _Requirements: 3.3_

  - [ ] 8.6 Write property test for JavaScript module refactoring
    - **Property 12: JavaScript Module Refactoring**
    - **Validates: Requirements 3.3**

  - [ ] 8.7 Add code documentation generation
    - Generate comments explaining complex layouts
    - Document component structure and relationships
    - Add inline documentation for generated code
    - _Requirements: 3.5_

  - [ ] 8.8 Write property test for code documentation
    - **Property 14: Code Documentation Generation**
    - **Validates: Requirements 3.5**

- [ ] 9. Component Detection Service
  - [ ] 9.1 Implement UI pattern recognition algorithm
    - Create DOM similarity analysis for repeated elements
    - Implement clustering algorithm for component grouping
    - Add pattern matching for common UI components
    - _Requirements: 4.1, 4.2_

  - [ ] 9.2 Write property test for UI pattern recognition
    - **Property 15: UI Pattern Recognition**
    - **Validates: Requirements 4.1**

  - [ ] 9.3 Implement component type classification
    - Create classifiers for navigation, headers, footers, cards
    - Add machine learning models for component recognition
    - Implement confidence scoring for classifications
    - _Requirements: 4.2_

  - [ ] 9.4 Write property test for component classification
    - **Property 16: Component Type Classification**
    - **Validates: Requirements 4.2**

  - [ ] 9.5 Implement component parameterization
    - Extract variable content from component instances
    - Generate parameterized component templates
    - Create component APIs with props and configuration
    - _Requirements: 4.3_

  - [ ] 9.6 Write property test for component parameterization
    - **Property 17: Component Parameterization**
    - **Validates: Requirements 4.3**

  - [ ] 9.7 Implement component library management
    - Create component storage and organization system
    - Implement component versioning and updates
    - Add component search and discovery features
    - _Requirements: 4.4, 4.5_

  - [ ] 9.8 Write property test for component synchronization
    - **Property 19: Component Instance Synchronization**
    - **Validates: Requirements 4.5**

- [ ] 10. Checkpoint - Core Processing Services
  - Ensure all processing services integrate properly, verify component detection

- [ ] 11. Online IDE Service
  - [ ] 11.1 Implement Monaco Editor integration
    - Set up Monaco Editor with TypeScript/HTML/CSS support
    - Configure syntax highlighting and IntelliSense
    - Add custom themes and editor configurations
    - _Requirements: 5.1, 5.4_

  - [ ] 11.2 Implement real-time preview system
    - Create live preview with hot reloading
    - Implement iframe-based preview with security isolation
    - Add responsive preview with device simulation
    - _Requirements: 5.2_

  - [ ] 11.3 Write property test for real-time preview updates
    - **Property 20: Real-Time Preview Updates**
    - **Validates: Requirements 5.2**

  - [ ] 11.4 Implement version control system
    - Create Git-like version control for projects
    - Implement commit history and branch management
    - Add rollback and diff visualization capabilities
    - _Requirements: 5.3_

  - [ ] 11.5 Write property test for version control integrity
    - **Property 21: Version Control Integrity**
    - **Validates: Requirements 5.3**

  - [ ] 11.6 Implement collaborative editing
    - Add real-time collaborative editing with WebSockets
    - Implement operational transformation for conflict resolution
    - Create user presence and cursor tracking
    - _Requirements: 5.5_

  - [ ] 11.7 Write property test for collaborative conflict resolution
    - **Property 22: Collaborative Editing Conflict Resolution**
    - **Validates: Requirements 5.5**

- [ ] 12. Project Management Service
  - [ ] 12.1 Implement project creation and organization
    - Create project templates and folder structures
    - Implement project metadata and configuration management
    - Add project import/export capabilities
    - _Requirements: 6.1, 6.4_

  - [ ] 12.2 Write property test for project structure organization
    - **Property 23: Project Structure Organization**
    - **Validates: Requirements 6.1**

  - [ ] 12.3 Implement project sharing and collaboration
    - Create team management and invitation system
    - Implement permission-based project access
    - Add collaboration features and activity tracking
    - _Requirements: 6.3_

  - [ ] 12.4 Write property test for project sharing access control
    - **Property 24: Project Sharing Access Control**
    - **Validates: Requirements 6.3**

  - [ ] 12.5 Implement project analytics and metrics
    - Create analytics dashboard for project insights
    - Implement clone accuracy measurement
    - Add performance monitoring and reporting
    - _Requirements: 6.5_

  - [ ] 12.6 Write property test for analytics data collection
    - **Property 26: Analytics Data Collection**
    - **Validates: Requirements 6.5**

- [ ] 13. Performance and Scalability Implementation
  - [ ] 13.1 Implement job queue system with Bull
    - Set up Redis-based job queues for processing tasks
    - Implement worker processes for parallel execution
    - Add job monitoring and failure handling
    - _Requirements: 7.1, 7.4_

  - [ ] 13.2 Write property test for parallel processing
    - **Property 27: Parallel Processing Efficiency**
    - **Validates: Requirements 7.1**

  - [ ] 13.3 Implement caching system
    - Create intelligent caching for processed content
    - Implement cache invalidation strategies
    - Add distributed caching with Redis
    - _Requirements: 7.3_

  - [ ] 13.4 Write property test for intelligent caching
    - **Property 29: Intelligent Caching Behavior**
    - **Validates: Requirements 7.3**

  - [ ] 13.5 Implement CDN integration
    - Set up CloudFront or similar CDN for asset delivery
    - Implement automatic asset upload to CDN
    - Add CDN cache management and purging
    - _Requirements: 7.2_

  - [ ] 13.6 Write property test for CDN asset distribution
    - **Property 28: CDN Asset Distribution**
    - **Validates: Requirements 7.2**

- [ ] 14. Checkpoint - Performance and Scalability
  - Ensure performance optimizations work correctly, verify scalability features

- [ ] 15. Billing and Monetization Service
  - [ ] 15.1 Implement usage tracking system
    - Create metrics collection for pages, storage, API calls
    - Implement real-time usage monitoring
    - Add usage analytics and reporting
    - _Requirements: 10.1, 10.2_

  - [ ] 15.2 Write property test for usage monitoring
    - **Property 43: Comprehensive Usage Monitoring**
    - **Validates: Requirements 10.2**

  - [ ] 15.3 Implement subscription and billing system
    - Create tiered subscription plans with limits
    - Implement billing calculations and invoicing
    - Add payment processing with multiple providers
    - _Requirements: 10.1, 10.4_

  - [ ] 15.4 Write property test for usage-based billing
    - **Property 42: Usage-Based Billing Accuracy**
    - **Validates: Requirements 10.1**

  - [ ] 15.5 Implement free tier and limitations
    - Create free tier with usage restrictions
    - Implement upgrade prompts and billing notifications
    - Add grace periods and usage warnings
    - _Requirements: 10.5_

  - [ ] 15.6 Write property test for free tier limitations
    - **Property 46: Free Tier Limitation Enforcement**
    - **Validates: Requirements 10.5**

- [ ] 16. Security and Compliance Implementation
  - [ ] 16.1 Implement data encryption and security
    - Add encryption for sensitive data at rest and in transit
    - Implement secure key management
    - Add data protection compliance features
    - _Requirements: 8.4, 9.4_

  - [ ] 16.2 Write property test for data encryption
    - **Property 35: Data Encryption Compliance**
    - **Validates: Requirements 8.4**

  - [ ] 16.3 Implement audit logging system
    - Create comprehensive audit trail for all user actions
    - Implement security monitoring and alerting
    - Add compliance reporting capabilities
    - _Requirements: 9.5_

  - [ ] 16.4 Write property test for audit logging
    - **Property 41: Comprehensive Audit Logging**
    - **Validates: Requirements 9.5**

  - [ ] 16.5 Implement legal compliance features
    - Add copyright and legal warning systems
    - Implement content policy enforcement
    - Create compliance reporting and documentation
    - _Requirements: 9.4_

  - [ ] 16.6 Write property test for legal compliance warnings
    - **Property 40: Legal Compliance Warning System**
    - **Validates: Requirements 9.4**

- [ ] 17. Integration and System Testing
  - [ ] 17.1 Implement end-to-end integration tests
    - Create full workflow tests from crawling to code generation
    - Test multi-service interactions and data flow
    - Add performance benchmarking and load testing
    - _Requirements: All_

  - [ ] 17.2 Write integration property tests
    - Test complete cloning workflow properties
    - Verify data consistency across services
    - Test system behavior under various load conditions

  - [ ] 17.3 Implement deployment and monitoring
    - Set up production deployment with Docker containers
    - Implement health checks and monitoring
    - Add logging aggregation and alerting
    - _Requirements: 7.4, 7.5_

- [ ] 18. Final Checkpoint - Complete System
  - Ensure all services work together seamlessly
  - Verify all property-based tests pass
  - Confirm system meets performance requirements
  - Validate security and compliance features

## Notes

- All tasks include comprehensive property-based testing for maximum quality assurance
- Each task references specific requirements for traceability
- Property tests validate universal correctness properties using fast-check framework
- Checkpoints ensure incremental validation and provide natural stopping points
- The implementation follows microservices architecture with clear service boundaries
- All services use TypeScript for type safety and maintainability