counties, pagination, filter count, show total results

bizmatch-server/src/geo/geo.service.ts

@@ -1,9 +1,9 @@
 import { Injectable } from '@nestjs/common';
 import { readFileSync } from 'fs';
 import path, { join } from 'path';
-import { GeoResult } from 'src/models/main.model.js';
+import { CountyResult, GeoResult } from 'src/models/main.model.js';
 import { fileURLToPath } from 'url';
-import { City, Geo, State } from '../models/server.model.js';
+import { City, CountyData, Geo, State } from '../models/server.model.js';
 
 const __filename = fileURLToPath(import.meta.url);
 const __dirname = path.dirname(__filename);
@@ -11,6 +11,7 @@ const __dirname = path.dirname(__filename);
 @Injectable()
 export class GeoService {
   geo: Geo;
+  counties: CountyData[];
   constructor() {
     this.loadGeo();
   }
@@ -18,9 +19,32 @@ export class GeoService {
     const filePath = join(__dirname, '../..', 'assets', 'geo.json');
     const rawData = readFileSync(filePath, 'utf8');
     this.geo = JSON.parse(rawData);
+    const countiesFilePath = join(__dirname, '../..', 'assets', 'counties.json');
+    const rawCountiesData = readFileSync(countiesFilePath, 'utf8');
+    this.counties = JSON.parse(rawCountiesData);
   }
+  findCountiesStartingWith(prefix: string, states?: string[]) {
+    let results: CountyResult[] = [];
+    let idCounter = 1;
 
-  findCitiesStartingWith(prefix: string, state?: string): { city: string; state: string; state_code: string }[] {
+    this.counties.forEach(stateData => {
+      if (!states || states.includes(stateData.state)) {
+        stateData.counties.forEach(county => {
+          if (county.startsWith(prefix.toUpperCase())) {
+            results.push({
+              id: idCounter++,
+              name: county,
+              state: stateData.state_full,
+              state_code: stateData.state,
+            });
+          }
+        });
+      }
+    });
+
+    return results;
+  }
+  findCitiesStartingWith(prefix: string, state?: string): GeoResult[] {
     const result: GeoResult[] = [];
 
     this.geo.states.forEach((state: State) => {