Merge pull request #5 from johndoe6345789/copilot/improve-merge-conflict-resolution

Add comprehensive roadmap with multi-frontend architecture and OCR'd research paper
2026-04-24 13:44:55 +00:00 · 2025-12-25 08:24:53 +00:00
parent 6d5650c4b2 21a17d8760
commit a965ba94c0
5 changed files with 1607 additions and 0 deletions
--- a/README.md
+++ b/README.md
@@ -16,6 +16,14 @@ can extend the UI palette without touching the core code.
 - Simple merge algorithm utilities in `wizardmerge.algo`
 - Helper scripts for environment setup and running the app

+## Roadmap
+See [ROADMAP.md](ROADMAP.md) for our vision and development plan to make resolving merge conflicts easier. The roadmap covers:
+- Enhanced merge algorithms (three-way merge, conflict detection)
+- Smart semantic merging for different file types
+- Advanced visualization and UI improvements
+- Git workflow integration
+- AI-assisted conflict resolution
+
 ## Getting Started
 1. Create a virtual environment and install dependencies:
   ```sh
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -0,0 +1,386 @@
+# WizardMerge Roadmap
+
+## Research Foundation
+
+WizardMerge is based on research from The University of Hong Kong. The complete research paper has been extracted via OCR and is available in [`docs/PAPER.md`](docs/PAPER.md).
+
+**Key Research Insights:**
+- Traditional Git merging uses textual-based strategies that ignore syntax and semantics
+- WizardMerge achieves 28.85% reduction in conflict resolution time
+- Provides merge suggestions for over 70% of code blocks affected by conflicts
+- Uses code block dependency analysis at text and LLVM-IR levels
+- Tested on 227 conflicts across five large-scale projects
+
+## Vision
+
+WizardMerge aims to become the most intuitive and powerful tool for resolving merge conflicts in software development. By combining intelligent algorithms with a clean, accessible UI, we want to make merge conflict resolution from a dreaded task into a smooth, understandable process.
+
+## Core Principles
+
+1. **Visual Clarity**: Show conflicts in a way that makes the problem immediately obvious
+2. **Smart Assistance**: Provide intelligent suggestions while keeping humans in control
+3. **Context Awareness**: Understand code structure and semantics, not just text diffs
+4. **Workflow Integration**: Seamlessly fit into developers' existing Git workflows
+5. **Safety First**: Make it hard to accidentally lose changes or break code
+
+---
+
+## Phase 1: Foundation (0-3 months)
+
+### 1.1 Enhanced Merge Algorithm
+**Priority: HIGH**
+
+- [ ] Implement three-way merge algorithm (base, ours, theirs)
+- [ ] Add conflict detection and marking
+- [ ] Support for different conflict markers (Git, Mercurial, etc.)
+- [ ] Line-level granularity with word-level highlighting
+- [ ] Handle common auto-resolvable patterns:
+  - Non-overlapping changes
+  - Identical changes from both sides
+  - Whitespace-only differences
+
+**Deliverable**: `wizardmerge/algo/three_way_merge.py` module
+
+### 1.2 File Input/Output
+**Priority: HIGH**
+
+- [ ] Parse Git conflict markers from files
+- [ ] Load base, ours, and theirs versions from Git
+- [ ] Save resolved merge results
+- [ ] Support for directory-level conflict resolution
+- [ ] Backup mechanism for safety
+
+**Deliverable**: `wizardmerge/io/` module with file handlers
+
+### 1.3 Core UI Components
+**Priority: HIGH**
+
+- [ ] Three-panel diff view (base, ours, theirs)
+- [ ] Unified conflict view with inline markers
+- [ ] Syntax highlighting for common languages
+- [ ] Line numbering and navigation
+- [ ] Conflict counter and navigation (next/previous conflict)
+
+**Deliverable**: Enhanced `main.qml` with conflict viewer components
+
+### 1.4 Basic Conflict Resolution Actions
+**Priority: MEDIUM**
+
+- [ ] Accept ours / Accept theirs buttons
+- [ ] Accept both (concatenate) option
+- [ ] Manual edit capability
+- [ ] Undo/redo stack
+- [ ] Keyboard shortcuts for common actions
+
+**Deliverable**: Action handlers in QML and Python backend
+
+### 1.5 Git Integration
+**Priority: MEDIUM**
+
+- [ ] Detect when running in Git repository
+- [ ] Read `.git/MERGE_HEAD` to identify conflicts
+- [ ] List all conflicted files
+- [ ] Mark files as resolved in Git
+- [ ] Launch from command line: `wizardmerge [file]`
+
+**Deliverable**: `wizardmerge/git/` module and CLI enhancements
+
+---
+
+## Phase 2: Intelligence & Usability (3-6 months)
+
+### 2.1 Smart Conflict Resolution
+**Priority: HIGH**
+
+- [ ] Semantic merge for common file types:
+  - JSON: merge by key structure
+  - YAML: preserve hierarchy
+  - Package files: intelligent dependency merging
+  - XML: structure-aware merging
+- [ ] Language-aware merging (AST-based):
+  - Python imports and functions
+  - JavaScript/TypeScript modules
+  - Java classes and methods
+- [ ] Auto-resolution suggestions with confidence scores
+- [ ] Learn from user's resolution patterns
+
+**Deliverable**: `wizardmerge/algo/semantic/` module
+
+### 2.2 Enhanced Visualization
+**Priority: MEDIUM**
+
+- [ ] Side-by-side diff view option
+- [ ] Minimap for large files
+- [ ] Color-coded change types (added, removed, modified, conflicted)
+- [ ] Collapsible unchanged regions
+- [ ] Blame/history annotations
+- [ ] Conflict complexity indicator
+
+**Deliverable**: Advanced QML components and visualization modes
+
+### 2.3 Code Intelligence
+**Priority: MEDIUM**
+
+- [ ] Integration with Language Server Protocol (LSP)
+- [ ] Syntax validation during merge
+- [ ] Show syntax errors in real-time
+- [ ] Auto-formatting after resolution
+- [ ] Import/dependency conflict detection
+
+**Deliverable**: `wizardmerge/lsp/` integration module
+
+### 2.4 Multi-Frontend Architecture
+**Priority: HIGH**
+
+- [ ] Abstract core merge engine from UI layer
+- [ ] Define clean API between frontend and backend
+- [ ] C++ backend implementation for performance-critical operations
+- [ ] C++/Qt6 native desktop frontend
+- [ ] Next.js WebUI frontend for browser-based access
+- [ ] Shared state management across frontends
+- [ ] RESTful or gRPC API for frontend-backend communication
+- [ ] WebSocket support for real-time updates
+
+**Deliverable**: `wizardmerge/core/` (backend abstraction), `frontends/qt6/` (C++/Qt6), `frontends/web/` (Next.js)
+
+### 2.5 Collaboration Features
+**Priority: LOW**
+
+- [ ] Add comments to conflicts
+- [ ] Mark conflicts for review
+- [ ] Export resolution report
+- [ ] Share conflict context via link
+- [ ] Team resolution patterns library
+
+**Deliverable**: Collaboration UI and sharing infrastructure
+
+### 2.6 Testing & Quality
+**Priority: HIGH**
+
+- [ ] Comprehensive test suite for merge algorithms
+- [ ] UI automation tests for all frontends
+- [ ] Performance benchmarks for large files
+- [ ] Fuzzing for edge cases
+- [ ] Documentation and examples
+
+**Deliverable**: `tests/` directory with full coverage
+
+---
+
+## Phase 3: Advanced Features (6-12 months)
+
+### 3.1 AI-Assisted Merging
+**Priority: MEDIUM**
+
+- [ ] ML model for conflict resolution suggestions
+- [ ] Pattern recognition from repository history
+- [ ] Natural language explanations of conflicts
+- [ ] Context-aware code completion during merge
+- [ ] Risk assessment for resolution choices
+
+**Deliverable**: `wizardmerge/ai/` module with ML models
+
+### 3.2 Multi-Repository Support
+**Priority: LOW**
+
+- [ ] Support for monorepos
+- [ ] Cross-repository dependency tracking
+- [ ] Batch conflict resolution
+- [ ] Conflict prevention suggestions during PR review
+
+**Deliverable**: Enhanced Git integration with multi-repo awareness
+
+### 3.3 Advanced Git Workflows
+**Priority: MEDIUM**
+
+- [ ] Rebase conflict resolution mode
+- [ ] Cherry-pick conflict handling
+- [ ] Merge strategy selection (recursive, ours, theirs, octopus)
+- [ ] Submodule conflict resolution
+- [ ] Partial staging of resolved conflicts
+
+**Deliverable**: Comprehensive Git workflow support
+
+### 3.4 Plugin Ecosystem
+**Priority: LOW**
+
+- [ ] Plugin API for custom merge strategies
+- [ ] Community plugin repository
+- [ ] Language-specific plugins (Go, Rust, C++, etc.)
+- [ ] IDE integrations (VSCode, IntelliJ, etc.)
+- [ ] Custom visualization plugins
+
+**Deliverable**: Plugin system architecture and marketplace
+
+### 3.5 Performance & Scale
+**Priority: MEDIUM**
+
+- [ ] Handle files with 100k+ lines
+- [ ] Streaming diff for large files
+- [ ] Incremental parsing and rendering
+- [ ] Background processing for analysis
+- [ ] Memory-efficient data structures
+
+**Deliverable**: Performance optimizations throughout codebase
+
+---
+
+## Technical Architecture
+
+### Current Stack
+- **UI**: PyQt6 + QML (declarative UI)
+- **Backend**: Python 3.8+
+- **Themes**: Plugin-based theming system
+- **Algorithms**: Custom merge utilities
+
+### Multi-Frontend Architecture (Proposed)
+
+**Core Philosophy**: Separate merge logic from presentation layer to support multiple frontend options while maintaining a single, robust backend.
+
+#### Backend (C++)
+- **Core Engine**: High-performance merge algorithms in C++
+- **Rationale**: Performance-critical operations (large file parsing, AST analysis, diff computation)
+- **API Layer**: RESTful/gRPC interface for frontend communication
+- **Components**:
+  - Three-way merge engine
+  - Conflict detection and resolution
+  - Git integration layer
+  - File I/O and parsing
+  - Semantic analysis engine
+
+#### Frontend Options
+
+1. **Qt6 Native (C++)**
+   - **Target**: Desktop users (Linux, Windows, macOS)
+   - **Advantages**: Native performance, full desktop integration, offline capability
+   - **Components**: Qt6 Widgets/QML UI, direct C++ backend integration
+   - **Distribution**: Standalone binaries
+
+2. **Next.js WebUI (TypeScript/React)**
+   - **Target**: Browser-based access, cross-platform, team collaboration
+   - **Advantages**: No installation, universal access, easy updates, collaborative features
+   - **Components**: React UI components, REST/WebSocket API client
+   - **Distribution**: Self-hosted or cloud service
+
+3. **PyQt6 (Legacy/Reference)**
+   - **Status**: Current implementation, to be maintained as reference
+   - **Purpose**: Rapid prototyping, Python-centric workflows
+   - **Future**: May be deprecated in favor of Qt6 C++ version
+
+### Proposed Additions
+- **Diff Library**: `diff-match-patch` or `difflib` enhancements
+- **Git Integration**: `libgit2` (C++) or `GitPython` (Python fallback)
+- **Syntax Highlighting**: `Pygments` (Python), `highlight.js` (Web), Qt SyntaxHighlighter (Qt6)
+- **AST Parsing**: `tree-sitter` (C++ bindings), Language-specific parsers
+- **LSP**: Language Server Protocol integration for all frontends
+- **Testing**: `pytest` (Python), `gtest` (C++), `Jest` (TypeScript)
+- **ML (future)**: `scikit-learn` or lightweight transformers
+- **API Framework**: `FastAPI` (Python) or `Crow` (C++) for backend API
+- **WebSockets**: `socket.io` for real-time updates in WebUI
+
+### Architecture Decisions
+
+1. **Multi-Frontend Abstraction**
+   - **Backend Core**: C++ for performance-critical merge operations
+   - **API Layer**: Clean RESTful/gRPC interface between frontend and backend
+   - **Frontend Choice**: Qt6 C++ for native desktop, Next.js for web/collaboration
+   - **Rationale**: Users choose their preferred interface while sharing the same robust engine
+
+2. **Separation of Concerns**
+   - Keep merge algorithms pure and testable
+   - UI communicates via well-defined API
+   - Git operations isolated in dedicated module
+   - Each frontend can evolve independently
+
+3. **Performance First**
+   - C++ backend for computationally expensive operations
+   - Lazy loading for large files
+   - Background threads for expensive operations
+   - Incremental updates to UI
+   - WebSocket for real-time web updates
+
+4. **Extensibility**
+   - Plugin system for merge strategies
+   - Theme system for all frontends
+   - Configuration file support
+   - API versioning for backward compatibility
+
+5. **Safety**
+   - Never modify original files until confirmed
+   - Auto-save drafts
+   - Full undo history
+   - Backup before resolve
+
+---
+
+## Success Metrics
+
+### Phase 1
+- [ ] Successfully resolve basic three-way merges
+- [ ] Handle 90% of common conflict patterns
+- [ ] Command-line integration working
+- [ ] 5 active users providing feedback
+
+### Phase 2
+- [ ] Auto-resolve 50% of simple conflicts
+- [ ] Support 10+ programming languages
+- [ ] UI response time < 100ms for typical files
+- [ ] 100+ active users
+
+### Phase 3
+- [ ] 80% user satisfaction rating
+- [ ] Handle repositories with 1M+ lines
+- [ ] 10+ community plugins
+- [ ] 1000+ active users
+
+---
+
+## Community & Contribution
+
+### Getting Involved
+1. **Try it out**: Use WizardMerge on real conflicts
+2. **Report issues**: Help us identify edge cases
+3. **Suggest features**: What would make your life easier?
+4. **Contribute code**: Pick an item from the roadmap
+5. **Write plugins**: Extend for your use case
+
+### Development Priorities
+We'll prioritize based on:
+- **User feedback**: What real developers need most
+- **Impact**: Features that help the most people
+- **Feasibility**: What we can build well with available resources
+- **Foundation first**: Core functionality before advanced features
+
+---
+
+## Related Projects
+
+- **mergebot**: https://github.com/JohnDoe6345789/mergebot - Companion automation tool
+- **Git**: Native three-way merge
+- **KDiff3**: Mature merge tool
+- **Meld**: Visual diff and merge
+- **Beyond Compare**: Commercial option
+
+Our niche: **Modern UI + intelligent algorithms + seamless workflow integration**
+
+---
+
+## Timeline Summary
+
+**Quarter 1**: Foundation - Core merge algorithm, file I/O, basic UI
+**Quarter 2**: Intelligence - Semantic merging, enhanced visualization
+**Quarter 3**: Polish - Testing, performance, collaboration features
+**Quarter 4**: Advanced - AI assistance, plugins, scale
+
+---
+
+## Next Steps
+
+1. **Immediate**: Implement three-way merge algorithm
+2. **This Sprint**: Add file input/output and Git integration
+3. **This Quarter**: Complete Phase 1 foundation items
+4. **Feedback Loop**: Release early, get user feedback, iterate
+
+---
+
+*This roadmap is a living document. Priorities may shift based on user feedback and technical discoveries. Last updated: December 2024*
--- a/docs/PAPER.md
+++ b/docs/PAPER.md
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1,7 @@
 PyQt6>=6.6
+
+# Optional: OCR dependencies for extracting text from documents
+# Uncomment if you need to run scripts/ocr_pages.py
+# pillow>=10.0
+# pytesseract>=0.3.10
+# System requirement: tesseract-ocr (install via: sudo apt-get install tesseract-ocr)
--- a/scripts/ocr_pages.py
+++ b/scripts/ocr_pages.py
@@ -0,0 +1,71 @@
+#!/usr/bin/env python3
+"""Extract text from page images using OCR and save as a markdown document.
+
+Dependencies:
+    pip install pillow pytesseract
+    
+System requirements:
+    tesseract-ocr (install via: sudo apt-get install tesseract-ocr)
+"""
+
+from pathlib import Path
+import pytesseract
+from PIL import Image
+
+def ocr_pages(pages_dir: Path, output_file: Path) -> None:
+    """Perform OCR on all page images and create a single document."""
+    
+    pages_dir = pages_dir.resolve()
+    if not pages_dir.exists():
+        raise FileNotFoundError(f"Pages directory not found: {pages_dir}")
+    
+    # Get all PNG files sorted by number
+    def get_page_number(path: Path) -> int:
+        """Extract page number from filename, defaulting to 0 if not found."""
+        try:
+            return int(path.stem.split("_")[-1])
+        except (ValueError, IndexError):
+            return 0
+    
+    image_files = sorted(pages_dir.glob("*.png"), key=get_page_number)
+    
+    if not image_files:
+        raise ValueError(f"No PNG files found in {pages_dir}")
+    
+    print(f"Found {len(image_files)} page images to process...")
+    
+    full_text = []
+    full_text.append("# WizardMerge Research Paper\n")
+    full_text.append("*Extracted via OCR from paper pages*\n\n")
+    full_text.append("---\n\n")
+    
+    for idx, image_file in enumerate(image_files, start=1):
+        print(f"Processing page {idx}/{len(image_files)}: {image_file.name}")
+        
+        try:
+            # Open image and perform OCR
+            img = Image.open(image_file)
+            text = pytesseract.image_to_string(img)
+            
+            # Add page separator and text
+            full_text.append(f"## Page {idx}\n\n")
+            full_text.append(text.strip())
+            full_text.append("\n\n---\n\n")
+            
+        except Exception as e:
+            print(f"  Error processing {image_file.name}: {e}")
+            full_text.append(f"## Page {idx}\n\n")
+            full_text.append(f"*[OCR Error: {e}]*\n\n")
+            full_text.append("---\n\n")
+    
+    # Write output
+    output_file.write_text("".join(full_text))
+    print(f"\nOCR complete! Output written to: {output_file}")
+    print(f"Total pages processed: {len(image_files)}")
+
+
+if __name__ == "__main__":
+    pages_dir = Path(__file__).parent.parent / "docs" / "pages"
+    output_file = Path(__file__).parent.parent / "docs" / "PAPER.md"
+    
+    ocr_pages(pages_dir, output_file)