# Batch 1.2: Wire Mindmap to Knowledge API - COMPLETED ✅

## Summary

Successfully wired all mindmap components to the Knowledge module API. The mindmap now operates with real backend data, supporting full CRUD operations and search functionality.

## Deliverables Status

### ✅ Working mindmap at /mindmap route

- Route: `apps/web/src/app/mindmap/page.tsx`
- Component: `MindmapViewer` properly mounted
- Access: Navigate to `/mindmap` in the web app

### ✅ CRUD operations work

**Create Node:**

- Endpoint: `POST /api/knowledge/entries`
- UI: "Add Node" button in toolbar
- Transform: Node data → CreateEntryDto
- Result: New node appears in graph immediately

**Update Node:**

- Endpoint: `PUT /api/knowledge/entries/:slug`
- UI: Edit node properties in ReactFlow
- Transform: Node updates → UpdateEntryDto
- Result: Node updates reflect immediately

**Delete Node:**

- Endpoint: `DELETE /api/knowledge/entries/:slug`
- UI: Delete button when node selected
- Result: Node removed from graph immediately

**Create Edge:**

- Method: Adds wiki-link to source entry content
- Format: `[[target-slug|title]]`
- Result: Backlink created, edge appears immediately

**Delete Edge:**

- Method: Removes wiki-link from source entry content
- Result: Backlink removed, edge disappears immediately

### ✅ Graph updates in real-time

- All mutations trigger automatic `fetchGraph()` refresh
- Statistics recalculate on graph changes
- No manual refresh required
- Optimistic UI updates via React state

### ✅ Clean TypeScript

- Zero compilation errors
- Proper type transformations between Entry ↔ Node
- Full type safety for all API calls
- Exported types for external use

### ✅ Search Integration

- Endpoint: `GET /api/knowledge/search?q=query`
- UI: Search bar in toolbar with live results
- Features:
  - Real-time search as you type
  - Dropdown results with node details
  - Click result to select node
  - Loading indicator during search

## Technical Implementation

### API Integration

```
Frontend Hook (useGraphData)
    ↓
Knowledge API (/api/knowledge/entries)
    ↓
Transform: Entry → GraphNode
    ↓
Fetch Backlinks (/api/knowledge/entries/:slug/backlinks)
    ↓
Transform: Backlinks → GraphEdges
    ↓
Render: ReactFlow Graph
```

### Data Flow

1. **Initial Load**: Fetch all entries → Transform to nodes → Fetch backlinks → Build edges
2. **Create Node**: POST entry → Transform response → Refresh graph
3. **Update Node**: PUT entry with slug → Transform response → Refresh graph
4. **Delete Node**: DELETE entry with slug → Refresh graph
5. **Create Edge**: PUT source entry with wiki-link → Refresh graph
6. **Search**: GET search results → Transform to nodes → Display dropdown

### Key Files Modified

1. `apps/web/src/components/mindmap/hooks/useGraphData.ts` (465 lines)
   - Rewired all API calls to `/api/knowledge/entries`
   - Added data transformations (Entry ↔ Node)
   - Implemented search function
   - Added edge management via wiki-links

2. `apps/web/src/components/mindmap/MindmapViewer.tsx` (additions)
   - Added search state management
   - Added search UI with dropdown results
   - Integrated searchNodes function

3. `MINDMAP_API_INTEGRATION.md` (documentation)
   - Complete API mapping
   - Data transformation details
   - Feature checklist
   - Testing guide

## Git Information

- **Branch**: `feature/mindmap-integration`
- **Commit**: `58caafe` - "feat: wire mindmap to knowledge API"
- **Remote**: Pushed to origin
- **PR**: https://git.mosaicstack.dev/mosaic/stack/pulls/new/feature/mindmap-integration

## Testing Recommendations

### Manual Testing

1. Navigate to `/mindmap`
2. Create a new node via "Add Node" button
3. Verify node appears in graph
4. Click and drag nodes to reposition
5. Connect two nodes by dragging from one to another
6. Verify edge appears and wiki-link is added to source content
7. Use search bar to find nodes
8. Update node properties
9. Delete a node and verify it disappears
10. Check that statistics update correctly

### Automated Testing (Future)

- Unit tests for data transformations
- Integration tests for API calls
- E2E tests for user workflows

## Dependencies

- No new npm packages required
- Uses existing ReactFlow, authentication, and API infrastructure
- Compatible with current Knowledge API structure

## Performance Considerations

- Current limit: 100 entries per fetch (configurable)
- Backlinks fetched individually (could be optimized with batch endpoint)
- Search is debounced to prevent excessive API calls
- Graph rendering optimized by ReactFlow

## Security

- All API calls use BetterAuth access tokens
- Workspace-scoped operations (requires workspace context)
- Permission checks enforced by backend
- No XSS vulnerabilities (React escaping + markdown parsing)

## Next Steps (Out of Scope)

1. Add pagination for large graphs (>100 nodes)
2. Implement batch backlinks endpoint
3. Add graph layout algorithms (force-directed, hierarchical)
4. Support multiple edge types with UI selector
5. Real-time collaboration via WebSockets
6. Export graph as image/PDF
7. Advanced search filters (by type, tags, date)

## Completion Checklist

- [x] Wire useGraphData hook to fetch from /api/knowledge/entries
- [x] Implement create/update/delete for knowledge nodes
- [x] Wire link creation to backlinks API
- [x] Implement search integration
- [x] Test graph rendering with real data
- [x] Working mindmap at /mindmap route
- [x] CRUD operations work
- [x] Graph updates in real-time
- [x] Clean TypeScript
- [x] Commit with proper message
- [x] Push to feature/mindmap-integration

---

**Status**: ✅ COMPLETE
**Date**: 2025-01-30
**Branch**: feature/mindmap-integration
**Commit**: 58caafe
