d3mocide · d3mocide · Feb 27, 2026 · Feb 27, 2026 · Feb 27, 2026
diff --git a/REFACTORING_REPORT.md b/REFACTORING_REPORT.md
@@ -1,6 +1,7 @@
 # MeshRF Codebase Refactoring Report
 
 **Generated**: 2026-02-25
+**Last Updated**: 2026-02-25
 **Project**: MeshRF — RF Propagation & Link Analysis Tool for LoRa Mesh Networks
 
 ---
@@ -14,298 +15,72 @@ MeshRF is a full-stack RF propagation and link analysis application for LoRa mes
 - **Physics Core**: WebAssembly (WASM) implementation of ITM (Longley-Rice) propagation model
 - **Infrastructure**: Redis caching, OpenTopoData elevation API, Docker
 
-**Codebase Health Summary**:
-- ~13,033 total source lines across 63 files
-- Average file size: ~207 lines / Median: ~140 lines
-- **20 files (31.7%) exceed 200 lines**
-- The top 3 files alone account for ~20% of all code
-
----
-
-## Files by Size (All Files ≥ 200 Lines)
-
-| Rank | File | Lines | Priority | Status |
-|------|------|-------|----------|--------|
-| 1 | `src/components/Map/MapContainer.jsx` | 1173 | CRITICAL | **REFACTORED** |
-| 2 | `src/components/Layout/Sidebar.jsx` | 829 | CRITICAL | **REFACTORED** |
-| 3 | `src/components/Map/LinkAnalysisPanel.jsx` | 643 | HIGH | **REFACTORED** |
-| 4 | `src/components/Map/UI/SiteAnalysisResultsPanel.jsx` | 609 | HIGH | **REFACTORED** |
-| 5 | `src/components/Map/OptimizationLayer.jsx` | 517 | HIGH | **REFACTORED** |
-| 6 | `rf-engine/server.py` | 475 | HIGH | **REFACTORED** |
-| 7 | `src/components/Map/UI/NodeManager.jsx` | 440 | MEDIUM | Pending |
-| 8 | `src/components/Map/OptimizationResultsPanel.jsx` | 435 | MEDIUM | **REFACTORED** |
-| 9 | `src/components/Map/LinkLayer.jsx` | 429 | MEDIUM | Pending |
-| 10 | `rf-engine/tasks/viewshed.py` | 398 | MEDIUM | **REFACTORED** |
-| 11 | `src/utils/rfMath.js` | 366 | LOW | Pending |
-| 12 | `src/components/Map/BatchNodesPanel.jsx` | 354 | MEDIUM | Pending |
-| 13 | `src/hooks/useViewshedTool.js` | 343 | MEDIUM | Pending |
-| 14 | `rf-engine/tile_manager.py` | 334 | MEDIUM | **REFACTORED** |
-| 15 | `src/components/Map/BatchProcessing.jsx` | 321 | LOW | Pending |
-| 16 | `src/components/Map/UI/GuidanceOverlays.jsx` | 318 | LOW | Pending |
-| 17 | `src/context/RFContext.jsx` | 307 | MEDIUM | **REFACTORED** (Facade) |
-| 18 | `src/hooks/useRFCoverageTool.js` | 277 | LOW | Pending |
-| 19 | `src/components/Map/Controls/ViewshedControl.jsx` | 225 | LOW | Pending |
-| 20 | `rf-engine/rf_physics.py` | 221 | LOW | Pending |
-
----
-
-## Detailed File Analysis
-
-### CRITICAL Priority
-
----
-
-#### 1. `src/components/Map/MapContainer.jsx` — 1173 lines
-
-**Status**: Refactored (Phase 1b)
-- **Extracted Managers**:
-    - `LinkLayerManager.jsx`: Handles Link Layer and Panel.
-    - `ViewshedLayerManager.jsx`: Handles Viewshed Layer, Marker, Control.
-    - `CoverageLayerManager.jsx`: Handles RF Coverage Layer, Marker, Recalc Logic.
-    - `OptimizationLayerManager.jsx`: Handles Optimization Layer, Multi-site clicks, Simulation results.
-- **Extracted Hooks**:
-    - `useLinkTool.js`: Manages link state (nodes, stats, locking).
-    - `useMapEventHandlers.js`: Manages map click/interaction logic.
-- **Result**: `MapContainer.jsx` is now a high-level orchestrator focusing on coordinating tools and layers.
-
----
-
-#### 2. `src/components/Layout/Sidebar.jsx` — 829 lines
-
-**Status**: Refactored (Phase 1a)
-- **Extracted Sections**:
-    - `HardwareSection.jsx`: Device, Antenna, Power, Cable settings.
-    - `EnvironmentSection.jsx`: ITM params (Ground, Climate, K-Factor).
-    - `LoRaBandSection.jsx`: Radio settings (Freq, BW, SF, CR).
-    - `SettingsSection.jsx`: Global settings (Units, Map Style).
-- **Reusable Component**: `CollapsibleSection.jsx`.
-- **Result**: `Sidebar.jsx` is now a clean layout container composing these sections.
-
----
-
-### HIGH Priority
-
----
-
-#### 3. `src/components/Map/LinkAnalysisPanel.jsx` — 643 lines
-
-**Status**: Refactored (Phase 3)
-- **Extracted Components**:
-    - `UI/LinkStatusIndicator.jsx`: Status header.
-    - `UI/LinkBudgetDisplay.jsx`: Stats grid.
-    - `UI/ModelComparisonTable.jsx`: Help/Info overlay.
-- **Extracted Hook**:
-    - `hooks/useDraggablePanel.js`: Encapsulates drag and resize logic.
-- **Result**: `LinkAnalysisPanel.jsx` is now a clean composition (~200 lines).
-
----
-
-#### 4. `src/components/Map/UI/SiteAnalysisResultsPanel.jsx` — 609 lines
-
-**Status**: Refactored (Phase 3)
-- **Extracted Components**:
-    - `UI/SiteAnalysis/SitesTab.jsx`: Site list and details.
-    - `UI/SiteAnalysis/LinksTab.jsx`: Link list and metrics.
-    - `UI/SiteAnalysis/TopologyTab.jsx`: Mesh topology and path analysis.
-- **Extracted Utils**:
-    - `utils/meshTopology.js`: BFS and connectivity algorithms.
-- **Result**: `SiteAnalysisResultsPanel.jsx` is now a clean orchestrator (~150 lines).
-
----
-
-#### 5. `src/components/Map/OptimizationLayer.jsx` — 517 lines
-
-**Status**: Refactored (Phase 4)
-- **Extracted Components**:
-    - `UI/Optimization/ScanningOverlay.jsx`: Loading spinner logic.
-    - `UI/Optimization/OptimizationAlert.jsx`: Notification/Alert logic.
-    - `UI/Optimization/OptimizationSettingsPanel.jsx`: Advanced settings.
-    - `UI/Optimization/CandidateMarkers.jsx`: Ghost node rendering.
-    - `UI/Optimization/HeatmapOverlay.jsx`: Heatmap visualization.
-- **Result**: `OptimizationLayer.jsx` is now a clean orchestrator (~180 lines).
-
----
-
-#### 6. `rf-engine/server.py` — 475 lines
-
-**Status**: Refactored (Phase 2)
-- **Extracted Routers**:
-    - `routers/analysis.py`: Link analysis endpoint.
-    - `routers/elevation.py`: Elevation and tile endpoints.
-    - `routers/tasks.py`: Async task management.
-    - `routers/optimization.py`: Optimization and export endpoints.
-- **Shared Dependencies**:
-    - `dependencies.py`: Handles Redis, TileManager, and Limiter instances.
-- **Result**: `server.py` is now a minimal entry point focusing on app setup and middleware.
-
----
-
----
-
-### MEDIUM Priority
-
----
-
-#### 7. `src/components/Map/UI/NodeManager.jsx` — 440 lines
-
-**What it does**: UI for managing the multi-site node list — add/remove, sorting, CSV import/export.
-
-**Suggested split**:
-
-```
-src/components/Map/UI/
-├── NodeManager.jsx           (~180 lines)
-├── NodeListTable.jsx         (~120 lines)
-└── AddNodeDialog.jsx         (~80 lines)
-src/utils/
-└── csvImportExport.js        (~80 lines)
-```
-
----
-
-#### 8. `src/components/Map/OptimizationResultsPanel.jsx` — 435 lines
-
-**Status**: Refactored (Phase 4)
-- **Extracted Components**:
-    - `UI/Optimization/OptimizationHelp.jsx`: Help slide-down.
-    - `UI/Optimization/ScoringWeights.jsx`: Scoring weights display.
-    - `UI/Optimization/ResultRow.jsx`: Individual result item.
-- **Result**: `OptimizationResultsPanel.jsx` is now a clean composition (~150 lines).
-
----
-
-#### 9. `src/components/Map/LinkLayer.jsx` — 429 lines
-
-**What it does**: Renders coloured polylines between nodes on the map to show link quality. Handles click popups and real-time updates.
-
-**Suggested split**:
-
-```
-src/components/Map/
-├── LinkLayer.jsx         (~200 lines)
-├── UI/
-│   └── LinkPolyline.jsx  (~120 lines)
-src/utils/
-└── linkStyleHelpers.js   (~60 lines) — color/width by quality
-```
-
----
-
-#### 10. `rf-engine/tasks/viewshed.py` — 398 lines
-
-**Status**: Refactored (Phase 3)
-- **Extracted Logic**:
-    - `rf-engine/core/viewshed_proc.py`: Contains the heavy calculation, grid manipulation, and image generation logic.
-- **Result**: `tasks/viewshed.py` is now a thin Celery task wrapper (~40 lines).
-
----
-
-#### 11. `rf-engine/tile_manager.py` — 334 lines
-
-**Status**: Refactored (Phase 2)
-- **Extracted Components**:
-    - `rf-engine/cache_layer.py`: Encapsulates Redis caching operations.
-    - `rf-engine/elevation_client.py`: Manages OpenTopoData API interactions and retries.
-    - `rf-engine/grid_processor.py`: Contains static methods for grid interpolation and elevation extraction.
-- **Result**: `TileManager` is now a clean orchestrator class.
-
----
-
----
-
-#### 12. `src/context/RFContext.jsx` — 307 lines
-
-**Status**: Refactored (Phase 1)
-- Implemented **Facade Strategy**:
-    - `UIContext.jsx`: UI state.
-    - `HardwareContext.jsx`: Node configs.
-    - `EnvironmentContext.jsx`: ITM params.
-    - `RadioContext.jsx`: LoRa settings.
-    - `RFContext.jsx`: Wrapper that composes these contexts and exports a unified hook.
-- **Result**: Clean separation of concerns while maintaining backward compatibility.
-
----
-
-#### 13. `src/hooks/useViewshedTool.js` — 343 lines
-
-**What it does**: Hook managing WASM viewshed calculation through Web Worker communication — task submission, progress tracking, result layer management.
-
-**Suggested split**:
-
-```
-src/hooks/
-├── useViewshedTool.js   (~180 lines)
-└── useWorkerState.js    (~80 lines) — generic worker communication helpers
-```
-
----
-
-### LOW Priority (Well-Structured, Minor Improvements Only)
-
-| File | Lines | Note |
-|------|-------|------|
-| `src/utils/rfMath.js` | 366 | Already logically organized by function. Could optionally split into `fspl.js`, `fresnel.js`, `lora.js`, `bullington.js` — not urgent. |
-| `src/components/Map/BatchNodesPanel.jsx` | 354 | Extract `BatchNodesList.jsx` table sub-component. |
-| `src/components/Map/BatchProcessing.jsx` | 321 | Move CSV parsing to `src/utils/csvParser.js`. |
-| `src/components/Map/UI/GuidanceOverlays.jsx` | 318 | Move help text constants to `helpContent.js`. |
-| `src/hooks/useRFCoverageTool.js` | 277 | Extract tile processing utilities. |
-| `src/components/Map/Controls/ViewshedControl.jsx` | 225 | Already focused — minimal changes needed. |
-| `rf-engine/rf_physics.py` | 221 | Well-organized — modularize only if it grows. |
-
----
-
-## Refactoring Progress
-
-### Phase 1 — Frontend Core (COMPLETED)
-
-1.  **MapContainer.jsx** (1173 → ~250 lines): Refactored into Layer Managers (`LinkLayerManager`, `ViewshedLayerManager`, `CoverageLayerManager`, `OptimizationLayerManager`) and Hooks (`useLinkTool`, `useMapEventHandlers`).
-2.  **Sidebar.jsx** (829 → ~200 lines): Refactored into Sections (`HardwareSection`, `EnvironmentSection`, `LoRaBandSection`, `SettingsSection`).
-3.  **RFContext.jsx**: Refactored using Facade pattern (`UIContext`, `HardwareContext`, `EnvironmentContext`, `RadioContext`).
-
----
-
-### Phase 2 — Backend API Structure (COMPLETED)
-
-3. **server.py** (475 → ~80 lines): Refactored into `routers/` directory with `analysis.py`, `elevation.py`, `tasks.py`, `optimization.py`.
-4. **tile_manager.py** (334 → ~120 lines): Extracted `cache_layer.py`, `elevation_client.py`, `grid_processor.py`.
-
-**Status**: Verified with tests and import checks.
-
 ---
 
----
-
-### Phase 3 — Analysis Components (COMPLETED)
+## Refactoring Progress Summary (COMPLETED)
 
-5. **LinkAnalysisPanel.jsx** (643 → ~200 lines): Extracted `LinkStatusIndicator`, `LinkBudgetDisplay`, `ModelComparisonTable` and `useDraggablePanel` hook.
-6. **SiteAnalysisResultsPanel.jsx** (609 → ~200 lines): Extracted `SitesTab`, `LinksTab`, `TopologyTab` and moved topology logic to `meshTopology.js`.
-7. **viewshed.py** (398 → ~40 lines): Moved calculation logic to `rf-engine/core/viewshed_proc.py`.
+All identified refactoring phases have been successfully completed.
 
-**Status**: Completed.
-
----
+### Phase 1 — Frontend Core
+- **MapContainer.jsx**: Decomposed into `LinkLayerManager`, `ViewshedLayerManager`, `CoverageLayerManager`, `OptimizationLayerManager` and `useLinkTool`/`useMapEventHandlers` hooks.
+- **Sidebar.jsx**: Refactored into `HardwareSection`, `EnvironmentSection`, `LoRaBandSection`, `SettingsSection`.
+- **RFContext.jsx**: Implemented Facade pattern wrapping `UIContext`, `HardwareContext`, `EnvironmentContext`, `RadioContext`.
 
-### Phase 4 — Optimization Components (COMPLETED)
+### Phase 2 — Backend API Structure
+- **server.py**: Refactored into `routers/` (`analysis.py`, `elevation.py`, `tasks.py`, `optimization.py`) and `dependencies.py`.
+- **tile_manager.py**: Extracted `cache_layer.py`, `elevation_client.py`, `grid_processor.py`.
 
-8. **OptimizationLayer.jsx** (517 → ~180 lines): Extracted `ScanningOverlay`, `OptimizationAlert`, `OptimizationSettingsPanel`, `CandidateMarkers`, and `HeatmapOverlay`.
-9. **OptimizationResultsPanel.jsx** (435 → ~150 lines): Extracted `OptimizationHelp`, `ScoringWeights`, and `ResultRow`.
+### Phase 3 — Analysis Components
+- **LinkAnalysisPanel.jsx**: Extracted `LinkStatusIndicator`, `LinkBudgetDisplay`, `ModelComparisonTable`, and `useDraggablePanel`.
+- **SiteAnalysisResultsPanel.jsx**: Extracted `SitesTab`, `LinksTab`, `TopologyTab`, and moved algorithms to `meshTopology.js`.
+- **viewshed.py**: Logic moved to `rf-engine/core/viewshed_proc.py`.
 
-**Status**: Completed.
-
----
+### Phase 4 — Optimization Components
+- **OptimizationLayer.jsx**: Extracted `ScanningOverlay`, `OptimizationAlert`, `OptimizationSettingsPanel`, `CandidateMarkers`, `HeatmapOverlay`.
+- **OptimizationResultsPanel.jsx**: Extracted `OptimizationHelp`, `ScoringWeights`, `ResultRow`.
 
 ### Phase 5 — State Management
-
-10. **RFContext.jsx** (307 → ~80 lines each): Split into 4 focused contexts. This change affects nearly every component, so coordinate with Phase 1 changes. (ALREADY COMPLETED IN PHASE 1 VIA FACADE)
-
-**Expected effort**: 1–2 days
-**Risk**: High — touches every component. Do this last and test end-to-end.
-
----
-
-### Phase 6 — Cleanup (Low Priority)
-
-11. Remaining MEDIUM/LOW priority files — `NodeManager`, `LinkLayer`, `rfMath.js`, batch components.
-
-**Expected effort**: 2–3 days
-**Risk**: Low.
+- Completed via Facade strategy in Phase 1.
+
+### Phase 6 — Cleanup (Completed)
+
+This final phase addressed all remaining files with high line counts or duplicated logic.
+
+1.  **NodeManager.jsx**:
+    - Extracted `NodeListTable.jsx` and `AddNodeForm.jsx`.
+    - Moved CSV import/export logic to `src/utils/csvImportExport.js`.
+2.  **LinkLayer.jsx**:
+    - Extracted `LinkPolyline.jsx` for map rendering.
+    - Moved style logic to `src/utils/linkStyleHelpers.js`.
+3.  **Batch Processing**:
+    - Consolidated CSV parsing in `src/utils/csvParser.js`.
+    - Created `BatchNodesList.jsx` for list rendering.
+4.  **Guidance Overlays**:
+    - Moved all static help text to `src/data/helpContent.js`.
+5.  **Hooks Refactor**:
+    - Created `useWorkerState.js` to standardize Web Worker communication.
+    - Updated `useViewshedTool.js` to use the new hook.
+    - Extracted tile fetching/decoding logic to `src/utils/tileFetcher.js` (used by Viewshed and RF Coverage tools).
+6.  **RF Math Modularization**:
+    - Split `rfMath.js` into `src/utils/math/` (`fspl.js`, `fresnel.js`, `lora.js`, `linkBudget.js`, `earth.js`, `profile.js`, `bullington.js`).
+    - Maintained backward compatibility by re-exporting from `rfMath.js`.
+
+---
+
+## Final Status
+
+All critical, high, and medium priority refactoring tasks have been executed. The codebase now adheres to a more modular component structure, better separation of concerns, and reduced file sizes.
+
+| Original File | Status | Refactored Into |
+|---|---|---|
+| `NodeManager.jsx` | **DONE** | `NodeListTable`, `AddNodeForm`, `csvImportExport.js` |
+| `LinkLayer.jsx` | **DONE** | `LinkPolyline`, `linkStyleHelpers.js` |
+| `BatchNodesPanel.jsx` | **DONE** | `BatchNodesList`, `csvParser.js` |
+| `useViewshedTool.js` | **DONE** | `useWorkerState`, `tileFetcher.js` |
+| `rfMath.js` | **DONE** | `src/utils/math/*.js` |
+| `useRFCoverageTool.js` | **DONE** | `tileFetcher.js` |
+| `GuidanceOverlays.jsx` | **DONE** | `helpContent.js` |
+
+**Next Steps**:
+- Verify end-to-end functionality (manual testing).
+- Monitor for any regressions in calculation logic (though tests passed).