# Analyze Module Refactoring Summary

## Overview
Successfully split the god module `/src/cli/analyze/mod.rs` (3038 lines) into smaller, focused submodules.

## Results

### Line Count Breakdown
- **Original mod.rs**: 3,038 lines
- **New mod.rs**: 1,148 lines (62% reduction)
- **parse.rs**: 236 lines
- **graph.rs**: 1,011 lines  
- **detect.rs**: 368 lines
- **output.rs**: 354 lines
- **Total**: 3,117 lines (slight increase due to module boundaries and comments)

### Module Structure

#### `/src/cli/analyze/parse.rs`
**Purpose**: File parsing logic
- `parse_files()` - Parallel parsing with caching
- `parse_files_lite()` - Lightweight parsing for --skip-graph mode
- `parse_files_chunked()` - Chunked parsing for very large repos
- `ParsePhaseResult` struct

#### `/src/cli/analyze/graph.rs`
**Purpose**: Code graph construction
- `build_graph()` - Build graph from parse results
- `build_graph_chunked()` - Chunked graph building for huge repos
- `build_global_function_map()` - Parallel function map construction
- `ModuleLookup` struct and implementation
- Call edge builders: `build_call_edges()`, `build_call_edges_fast()`
- Import edge builders: `build_import_edges()`, `build_import_edges_fast()`
- `save_graph_stats()` - Persist graph statistics
- `StreamingGraphBuilderImpl` - Streaming graph builder
- `parse_and_build_streaming()` - Bounded parallel pipeline

#### `/src/cli/analyze/detect.rs`
**Purpose**: Detector execution and enrichment
- `start_git_enrichment()` - Background git history enrichment
- `finish_git_enrichment()` - Wait for git enrichment completion
- `run_detectors()` - Execute all detectors with caching
- `run_detectors_streaming()` - Streaming detection for large repos
- `apply_voting()` - Voting engine for finding consolidation
- `update_incremental_cache()` - Cache findings for next run
- `apply_detector_overrides()` - Apply project config overrides

#### `/src/cli/analyze/output.rs`
**Purpose**: Output formatting and caching
- `filter_findings()` - Filter by severity and limit
- `paginate_findings()` - Paginate results
- `format_and_output()` - Format reports (text, JSON, SARIF, etc.)
- `check_fail_threshold()` - CI/CD threshold checking
- `load_cached_findings()` - Load post-processed findings cache
- `cache_results()` - Cache analysis results
- `output_cached_results()` - Fast path for fully cached results

#### `/src/cli/analyze/mod.rs`
**Purpose**: Main orchestration and setup
- `run()` - Main entry point
- `setup_environment()` - Environment validation and setup
- `initialize_graph()` - Graph initialization coordinator
- `execute_detection_phase()` - Detection phase coordinator
- `calculate_scores()` - Score calculation
- `build_health_report()` - Report building
- `generate_reports()` - Report generation coordinator
- Helper functions: `collect_source_files()`, `get_changed_files_since()`
- Configuration structs: `AnalysisConfig`, `EnvironmentSetup`, `FileCollectionResult`, `ScoreResult`

## Changes Made

### 1. Created Submodules
- ✅ Created `parse.rs` with parsing functions
- ✅ Created `graph.rs` with graph building functions
- ✅ Created `detect.rs` with detection functions
- ✅ Created `output.rs` with output/formatting functions

### 2. Updated mod.rs
- ✅ Added module declarations: `mod parse; mod graph; mod detect; mod output;`
- ✅ Added `use` imports from submodules
- ✅ Removed extracted function bodies (1,890 lines removed)
- ✅ Kept orchestration and setup logic
- ✅ Kept helper functions needed by mod.rs

### 3. Function Visibility
- ✅ All extracted functions marked `pub(super)` for visibility within the analyze module
- ✅ No changes to external API - all public functions remain in mod.rs

### 4. Compilation
- ✅ `cargo check` passes with no errors or warnings
- ✅ `cargo build` completes successfully
- ✅ No function signatures or logic changed - purely structural refactor

## Benefits

1. **Maintainability**: Each module has a clear, focused responsibility
2. **Readability**: Functions are grouped logically by concern
3. **Navigation**: Easier to find specific functionality
4. **Testing**: Easier to test individual modules
5. **Future Growth**: Clear boundaries for adding new features

## No Breaking Changes

- All public APIs remain unchanged
- No changes to function signatures or behavior
- Purely a structural refactor
- Existing tests should continue to pass without modification

## Next Steps (Optional)

Future improvements could include:
- Extract the streaming graph builder into its own module
- Split graph.rs further (edge builders vs. graph construction)
- Create a dedicated cache module for unified cache handling
