Refactor Location model to integrate PostGIS for spatial data, add legacy coordinate fields for compatibility, and enhance documentation for geocoding service implementation.

2025-12-20 05:51:09 -05:00 · 2025-02-23 20:06:27 -05:00
parent 7e5d15eb46
commit f15392806a
8 changed files with 723 additions and 109 deletions
--- a/memory-bank/activeContext.md
+++ b/memory-bank/activeContext.md
@@ -4,7 +4,7 @@
 Converting ThrillWiki from Django to Laravel+Livewire

 ## Current Phase
-Parks and Areas Management Implementation
+Location System Implementation

 ## Progress

@@ -72,26 +72,41 @@ Parks and Areas Management Implementation
    - Implemented cache warming
    - Added performance monitoring
    - Created error handling
+15. ✅ Implemented Location System Foundation:
+    - Created Location model with PostGIS
+    - Added polymorphic relationships
+    - Implemented spatial queries
+    - Added name and type fields
+    - Added activity logging
+    - Created coordinate sync
+    - Matched Django GeoDjango features

 ### In Progress
-1. [ ] Location System Implementation
-   - Model structure design
-   - Polymorphic relationships
-   - Map integration
-   - Location selection
+1. [ ] Geocoding Service Implementation
+   - [ ] OpenStreetMap integration
+   - [ ] Address normalization
+   - [ ] Coordinate validation
+   - [ ] Result caching
+   - [ ] Error handling

 ### Next Steps
-1. Location System
-   - [ ] Create location model
-   - [ ] Add polymorphic relationships
-   - [ ] Implement geocoding service
+1. Geocoding Service
+   - [ ] Create GeocodeService class
+   - [ ] Implement address lookup
+   - [ ] Add reverse geocoding
+   - [ ] Add batch processing
+   - [ ] Implement cache management
+   - [ ] Add error handling
+   - [ ] Create validation rules
+
+2. Location Components
   - [ ] Create map component
   - [ ] Add location selection
-   - [ ] Implement search
-   - [ ] Add clustering
-   - [ ] Create distance calculations
+   - [ ] Implement search interface
+   - [ ] Add clustering support
+   - [ ] Create location display

-2. Performance Optimization
+3. Performance Optimization
   - [ ] Implement query caching
   - [ ] Add index optimization
   - [ ] Create monitoring tools
@@ -101,19 +116,33 @@ Parks and Areas Management Implementation

 ### Recent Implementations

-1. Statistics Caching Design
-   - Service-based architecture
-   - Hierarchical caching
-   - Automatic invalidation
-   - Performance monitoring
+1. Location System Design
+   - PostGIS integration matching Django GeoDjango
+   - Polymorphic relationships for flexibility
+   - Legacy coordinate fields for compatibility
+   - Name and location type fields added
+   - Activity logging for location changes
+   - Automatic coordinate sync between formats
+   - Efficient spatial queries using PostGIS
+   - Geography type for accurate calculations
+   - Spatial indexing with GiST

-2. Cache Management
+2. Technical Decisions
+   - Maintain backward compatibility with lat/lon fields
+   - Use activity logging for change tracking
+   - Implement coordinate normalization
+   - Support both geography and geometry types
+   - Add name and type fields for better organization
+   - Use PostGIS functions matching Django's implementation
+   - Implement string representation for consistency
+
+3. Cache Management
   - 24-hour TTL
   - Batch processing
   - Error handling
   - Logging system

-3. Performance Features
+4. Performance Features
   - Efficient key structure
   - Optimized data format
   - Minimal cache churn
@@ -134,14 +163,14 @@ Parks and Areas Management Implementation
   - Statistics rollup

 ## Notes and Considerations
-1. Need to research map providers
+1. Configure OpenStreetMap integration
 2. Consider caching geocoding results
 3. May need clustering for large datasets
 4. Should implement distance-based search
 5. Consider adding location history
 6. Plan for offline maps
 7. Consider adding route planning
-8. Need to handle map errors
+8. Need to handle OpenStreetMap API errors
 9. Consider adding location sharing
 10. Plan for mobile optimization
 11. Consider adding geofencing
@@ -164,5 +193,5 @@ Parks and Areas Management Implementation
 14. [ ] Add trend analysis tools
 15. [ ] Set up cache invalidation
 16. [ ] Add cache warming jobs
-17. [ ] Research map providers
-18. [ ] Plan geocoding strategy
+17. [ ] Set up OpenStreetMap API integration
+18. [ ] Implement OpenStreetMap geocoding
--- a/memory-bank/models/LocationModel.md
+++ b/memory-bank/models/LocationModel.md
@@ -19,9 +19,8 @@ The Location model provides polymorphic location management for parks, areas, an
  - `country` (string) - Country name
  - `postal_code` (string, nullable) - Postal/ZIP code

- **Coordinates**
-  - `latitude` (decimal, 10,8) - Latitude coordinate
-  - `longitude` (decimal, 11,8) - Longitude coordinate
+- **Spatial Data**
+  - `coordinates` (point) - PostGIS point geometry with SRID 4326
  - `elevation` (decimal, 8,2, nullable) - Elevation in meters

 - **Additional Details**
@@ -35,10 +34,17 @@ The Location model provides polymorphic location management for parks, areas, an
  - `geocoded_at` (timestamp, nullable) - Last geocoding timestamp

 ### Indexes
- Coordinates: `(latitude, longitude)`
+- Spatial: `coordinates` (spatial index for efficient queries)
 - Location: `(country, state, city)`
 - Postal: `postal_code`

+### PostGIS Integration
+- Uses PostGIS point type for coordinates
+- SRID 4326 (WGS 84) for global coordinates
+- Spatial indexing for efficient queries
+- Native distance calculations
+- Geographic vs Geometric operations
+
 ## Relationships

 ### Polymorphic
--- a/memory-bank/prompts/GeocodeServiceImplementation.md
+++ b/memory-bank/prompts/GeocodeServiceImplementation.md
@@ -0,0 +1,75 @@
+# GeocodeService Implementation Prompt
+
+## Context
+Continue ThrillWiki Laravel+Livewire development, focusing on implementing the GeocodeService for the Location System. The Location model and HasLocation trait are complete, providing the foundation for location management.
+
+## Key Memory Bank Files
+1. memory-bank/activeContext.md - Current progress and next steps
+2. memory-bank/features/LocationSystem.md - System design and implementation plan
+3. memory-bank/models/LocationModel.md - Location model documentation
+4. memory-bank/traits/HasLocation.md - HasLocation trait documentation
+
+## Current Progress
+- ✅ Created Location model with polymorphic relationships
+- ✅ Implemented HasLocation trait
+- ✅ Set up location-based queries and calculations
+- ✅ Added comprehensive documentation
+
+## Next Implementation Steps
+1. Create GeocodeService
+   - API integration
+   - Address lookup
+   - Coordinate validation
+   - Batch processing
+   - Cache management
+
+2. Implement Location Components
+   - Map integration
+   - Location selection
+   - Search functionality
+   - Clustering support
+
+## Technical Requirements
+
+### GeocodeService Features
+- Address to coordinates conversion
+- Reverse geocoding (coordinates to address)
+- Batch geocoding support
+- Result caching
+- Error handling
+- Rate limiting
+- Validation
+
+### Integration Points
+- Location model geocoding methods
+- HasLocation trait helpers
+- Component integration
+- Cache system
+
+### Performance Considerations
+- Cache geocoding results
+- Implement request batching
+- Handle API rate limits
+- Optimize response storage
+
+## Development Guidelines
+- Follow Memory Bank documentation practices
+- Document technical decisions
+- Update activeContext.md after each step
+- Create comprehensive service tests
+- Consider error handling and edge cases
+
+## Project Stack
+- Laravel for backend
+- Livewire for components
+- PostgreSQL for database (with PostGIS extension)
+- Memory Bank for documentation
+
+## PostgreSQL Spatial Features
+- Using PostGIS for spatial operations
+- Native coordinate type (POINT)
+- Efficient spatial indexing
+- Advanced distance calculations
+- Geographic vs Geometric types
+
+Continue implementation following established patterns and maintaining comprehensive documentation.
--- a/memory-bank/traits/HasLocation.md
+++ b/memory-bank/traits/HasLocation.md
@@ -0,0 +1,156 @@
+# HasLocation Trait
+
+## Overview
+The HasLocation trait provides location management capabilities to Laravel models through a polymorphic relationship with the Location model. It enables models to have associated geographic data, including coordinates, address information, and location-based querying capabilities.
+
+## Features
+
+### Relationships
+- `location()` - MorphOne relationship to Location model
+- Automatic location deletion when parent model is deleted
+
+### Accessors
+- `coordinates` - Returns [lat, lng] array
+- `formatted_address` - Returns formatted address string
+- `map_url` - Returns Google Maps URL
+
+### Location Management
+- `updateLocation(array $attributes)` - Update or create location
+- `setCoordinates(float $lat, float $lng, ?float $elevation)` - Set coordinates
+- `setAddress(array $components)` - Set address components
+
+### Distance & Search
+- `distanceTo($model)` - Calculate distance to another model
+- `scopeNearby($query, $lat, $lng, $radius)` - Find nearby models
+- `scopeInBounds($query, $ne, $sw)` - Find models within bounds
+
+## Usage
+
+### Adding Location Support
+```php
+use App\Traits\HasLocation;
+
+class Park extends Model
+{
+    use HasLocation;
+}
+```
+
+### Managing Locations with PostGIS
+```php
+// Create/update location with PostGIS point
+$park->updateLocation([
+    'address' => '123 Main St',
+    'city' => 'Orlando',
+    'state' => 'FL',
+    'country' => 'USA',
+    'coordinates' => DB::raw("ST_SetSRID(ST_MakePoint(-81.379234, 28.538336), 4326)")
+]);
+
+// Set coordinates directly (automatically creates PostGIS point)
+$park->setCoordinates(28.538336, -81.379234);
+
+// Access location data (automatically extracts from PostGIS point)
+$coordinates = $park->coordinates; // Returns [lat, lng]
+$address = $park->formatted_address;
+$mapUrl = $park->map_url;
+```
+
+### PostGIS Spatial Queries
+```php
+// Find parks within 50km using ST_DWithin
+$nearbyParks = Park::nearby(28.538336, -81.379234, 50)->get();
+
+// Find parks in bounds using ST_MakeEnvelope
+$parksInArea = Park::inBounds(
+    ['lat' => 28.6, 'lng' => -81.2], // Northeast
+    ['lat' => 28.4, 'lng' => -81.4]  // Southwest
+)->get();
+
+// Calculate distance using ST_Distance
+$distance = $parkA->distanceTo($parkB);
+```
+
+### PostGIS Functions Used
+- `ST_SetSRID` - Set spatial reference system (4326 = WGS 84)
+- `ST_MakePoint` - Create point geometry from coordinates
+- `ST_DWithin` - Find points within distance
+- `ST_MakeEnvelope` - Create bounding box
+- `ST_Within` - Check if point is within bounds
+- `ST_Distance` - Calculate distance between points
+
+## Integration Points
+
+### Models Using Trait
+- Park
+- ParkArea
+- (Future models requiring location)
+
+### Related Components
+- Location model
+- GeocodeService
+- LocationSearchService
+- LocationSelector component
+- LocationDisplay component
+
+## Implementation Notes
+
+### Design Decisions
+1. **Automatic Cleanup**
+   - Location records are automatically deleted when parent is deleted
+   - Prevents orphaned location records
+   - Maintains referential integrity
+
+2. **Flexible Updates**
+   - `updateLocation()` handles both create and update
+   - Reduces code duplication
+   - Provides consistent interface
+
+3. **Coordinate Handling**
+   - Consistent lat/lng format
+   - Optional elevation support
+   - Null handling for incomplete data
+
+4. **Query Scopes**
+   - Chainable with other queries
+   - Consistent parameter formats
+   - Performance-optimized implementation
+
+### Performance Considerations
+- Spatial indexing with PostGIS GiST index
+- Native PostGIS distance calculations
+- Geography vs Geometry type selection
+  - Geography for accurate distance calculations
+  - Geometry for faster bounding box queries
+- Efficient spatial joins using PostGIS functions
+- Eager loading recommended for lists
+- Optimized polymorphic relationships
+
+### Security
+- Input validation in setters
+- Coordinate bounds checking
+- Safe SQL distance calculations
+
+## Testing Strategy
+
+### Unit Tests
+- [ ] Relationship management
+- [ ] Coordinate handling
+- [ ] Address formatting
+- [ ] Distance calculations
+
+### Integration Tests
+- [ ] Location updates
+- [ ] Search queries
+- [ ] Boundary queries
+- [ ] Deletion cleanup
+
+## Future Enhancements
+1. [ ] Add elevation support
+2. [ ] Implement timezone handling
+3. [ ] Add boundary polygon support
+4. [ ] Create location history tracking
+5. [ ] Add batch location updates
+6. [ ] Implement geofencing
+7. [ ] Add location validation
+8. [ ] Create location sharing