stable: finalized GIS aesthetics and Syria/Jordan routing synchronization

apps/api/src/geocoding/geocoding-init.service.ts

@@ -0,0 +1,56 @@
+import { Injectable, OnModuleInit, Logger } from '@nestjs/common';
+import { InjectRepository } from '@nestjs/typeorm';
+import { Repository } from 'typeorm';
+import { PlaceSyria } from './entities/place-syria.entity';
+
+@Injectable()
+export class GeocodingInitService implements OnModuleInit {
+  private readonly logger = new Logger(GeocodingInitService.name);
+
+  constructor(
+    @InjectRepository(PlaceSyria)
+    private readonly repo: Repository<PlaceSyria>,
+  ) {}
+
+  async onModuleInit() {
+    this.logger.log('Checking for PostGIS extensions and triggers...');
+    try {
+      // Ensure PostGIS and Trigram extensions are enabled
+      await this.repo.query('CREATE EXTENSION IF NOT EXISTS postgis;');
+      await this.repo.query('CREATE EXTENSION IF NOT EXISTS pg_trgm;');
+      
+      // Cleanup: Create a trigger to automatically update 'location' when lat/lng changes
+      await this.repo.query(`
+        CREATE OR REPLACE FUNCTION sync_place_location() RETURNS trigger AS $$
+        BEGIN
+          IF NEW.latitude IS NOT NULL AND NEW.longitude IS NOT NULL THEN
+            NEW.location := ST_SetSRID(ST_MakePoint(CAST(NEW.longitude AS FLOAT), CAST(NEW.latitude AS FLOAT)), 4326);
+          END IF;
+          RETURN NEW;
+        END;
+        $$ LANGUAGE plpgsql;
+      `);
+
+      await this.repo.query(`
+        DROP TRIGGER IF EXISTS trg_sync_place_location ON places_syria;
+        CREATE TRIGGER trg_sync_place_location
+        BEFORE INSERT OR UPDATE ON places_syria
+        FOR EACH ROW EXECUTE FUNCTION sync_place_location();
+      `);
+
+      // 1. GIST Geometry Indexes (for fast proximity search)
+      await this.repo.query('CREATE INDEX IF NOT EXISTS idx_places_syria_location ON places_syria USING gist (location);');
+      await this.repo.query('CREATE INDEX IF NOT EXISTS idx_osm_areas_geom ON osm_areas USING gist (geom);');
+      await this.repo.query('CREATE INDEX IF NOT EXISTS idx_osm_points_geom ON osm_points_with_area USING gist (geom);');
+
+      // 2. GIST Trigram Indexes (for fast fuzzy name search and low server load)
+      await this.repo.query('CREATE INDEX IF NOT EXISTS idx_places_syria_names_trgm ON places_syria USING gist (name_ar gist_trgm_ops, name_en gist_trgm_ops);');
+      await this.repo.query('CREATE INDEX IF NOT EXISTS idx_osm_areas_names_trgm ON osm_areas USING gist (name_ar gist_trgm_ops);');
+      await this.repo.query('CREATE INDEX IF NOT EXISTS idx_osm_points_names_trgm ON osm_points_with_area USING gist (name_ar gist_trgm_ops, name_en gist_trgm_ops);');
+
+      this.logger.log('Geocoding database triggers and optimized indexes initialized.');
+    } catch (err) {
+      this.logger.error('Failed to initialize database geocoding triggers:', err);
+    }
+  }
+}