turash/bugulma/frontend/LEAFLET_MIGRATION_COMPLETE.md

Leaflet Migration Complete ✅

Summary

Successfully migrated from @vnedyalk0v/react19-simple-maps to Leaflet with react-leaflet. All legacy code has been removed.

✅ Completed Tasks

1. Installed Dependencies

• ✅ leaflet - Core mapping library
• ✅ react-leaflet - React bindings for Leaflet
• ✅ react-leaflet-markercluster - Marker clustering plugin
• ✅ @types/leaflet - TypeScript definitions
• ✅ @types/leaflet.markercluster - TypeScript definitions for clustering

2. Created New Components

• ✅ LeafletMap.tsx - Main map component using Leaflet
• ✅ OrganizationMarkers.tsx - Organization markers with proper icon rendering
• ✅ HistoricalMarkers.tsx - Historical landmark markers
• ✅ SymbiosisLines.tsx - Connection lines between organizations
• ✅ OrganizationCenterHandler.tsx - Auto-centers map on selected org
• ✅ MapControls.tsx - Updated to use Leaflet map instance

3. Updated Components

• ✅ MapPicker.tsx - Migrated to Leaflet with click and drag support
• ✅ MapView.tsx - Updated to use LeafletMap
• ✅ useMapInteraction.ts - Fixed to work with Site coordinates
• ✅ MapContexts.tsx - Updated zoom defaults and coordinate format

4. Created New Hooks

• ✅ useOrganizationSites.ts - Fetches sites for organizations in parallel

5. Fixed Critical Bugs

• ✅ Location Data Access - Now uses Sites instead of non-existent Organization.location
• ✅ Marker Positioning - Markers properly positioned using Leaflet's coordinate system
• ✅ Coordinate Format - Fixed to use [lat, lng] format (Leaflet standard)
• ✅ Icon Rendering - Properly renders React icons using ReactDOMServer.renderToString()

6. Removed Legacy Code

• ❌ Deleted InteractiveMap.tsx (old component)
• ❌ Deleted MapMarker.tsx (old SVG-based marker)
• ❌ Deleted AiConnectionLines.tsx (old connection lines)
• ❌ Deleted HistoricalMarker.tsx (old historical marker)
• ❌ Deleted MapDebugger.tsx (debug tool for old library)
• ❌ Deleted components/debug/README.md (debug documentation)
• ❌ Deleted scripts/test-map-config.ts (old test script)
• ❌ Removed @vnedyalk0v/react19-simple-maps dependency
• ❌ Removed react-zoom-pan-pinch dependency (unused)
• ❌ Removed debug:map script from package.json
• ❌ Removed /debug/map route from AppRouter
• ❌ Removed old library references from index.html
• ❌ Removed /debug/map from e2e tests

Key Improvements

🚀 Performance

• Marker Clustering - Automatically clusters nearby markers using react-leaflet-markercluster
• Viewport Culling - Leaflet handles this automatically
• Efficient Rendering - Better performance with many markers
• Parallel Site Fetching - Uses useQueries to fetch all sites in parallel

🐛 Bug Fixes

• Location Data - Fixed critical bug where org.location didn't exist
• Marker Positioning - Markers now properly positioned using Site coordinates
• Coordinate System - Consistent [lat, lng] format throughout
• Icon Rendering - Properly renders React icons using server-side rendering

🎨 Features

• Better Popups - Native Leaflet popups with better styling
• Smooth Animations - Leaflet's built-in animations
• Touch Support - Better mobile/tablet support
• Accessibility - Better keyboard navigation
• Draggable Markers - In MapPicker for location selection

Technical Details

Icon Rendering

Icons are properly rendered using ReactDOMServer.renderToString() to convert React icon components to HTML strings that Leaflet's DivIcon can use:

const iconElement = React.cloneElement(sector.icon, {
  width: size * 0.6,
  height: size * 0.6,
  className: 'text-primary-foreground',
  style: {
    width: `${size * 0.6}px`,
    height: `${size * 0.6}px`,
    color: 'hsl(var(--primary-foreground))',
    fill: 'currentColor',
  },
});
const iconHtml = renderToString(iconElement);

Site-Based Location Access

Organizations don't have direct location data. Instead, we:

1. Fetch Sites for each organization using useOrganizationSites
2. Create a map: Organization ID → Site
3. Use Site coordinates (Latitude, Longitude) for markers

Coordinate Format

• Leaflet Standard: [latitude, longitude] (not [lng, lat])
• All coordinates now use this format consistently

Files Changed

New Files

• components/map/LeafletMap.tsx
• components/map/OrganizationMarkers.tsx
• components/map/HistoricalMarkers.tsx
• components/map/SymbiosisLines.tsx
• components/map/OrganizationCenterHandler.tsx
• hooks/map/useOrganizationSites.ts

Modified Files

• pages/MapView.tsx
• components/ui/MapPicker.tsx
• components/map/MapControls.tsx
• hooks/map/useMapInteraction.ts
• contexts/MapContexts.tsx
• src/AppRouter.tsx
• package.json
• index.html
• e2e/check-links.spec.ts

Deleted Files

• components/map/InteractiveMap.tsx
• components/map/MapMarker.tsx
• components/map/AiConnectionLines.tsx
• components/map/HistoricalMarker.tsx
• components/debug/MapDebugger.tsx
• components/debug/README.md
• scripts/test-map-config.ts

Dependencies

Added

{
  "leaflet": "^1.9.4",
  "react-leaflet": "^5.0.0",
  "react-leaflet-markercluster": "^5.0.0-rc.0",
  "@types/leaflet": "^1.9.21",
  "@types/leaflet.markercluster": "^1.5.6"
}

Removed

{
  "@vnedyalk0v/react19-simple-maps": "^1.2.0",
  "react-zoom-pan-pinch": "^3.7.0"
}

Migration Benefits

1. Mature Library - Leaflet is battle-tested with 10+ years of development
2. Better Performance - Built-in optimizations and clustering
3. Rich Ecosystem - Many plugins available
4. Better Documentation - Extensive docs and community support
5. Mobile Support - Excellent touch and mobile support
6. Type Safety - Full TypeScript support

Next Steps

1. ✅ Test the map in development
2. ✅ Verify all markers appear correctly
3. ✅ Test marker clustering with many organizations
4. ✅ Verify connection lines work
5. ✅ Test on mobile devices
6. ⚠️ Monitor performance with many markers (100+)

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Migration completed successfully! 🎉

The map now uses Leaflet, a mature, well-maintained library with excellent performance and features. All legacy code has been removed.