aknuth/bizmatch-project
1
0
Fork 0
Code Issues 9 Pull Requests Packages Projects 5 Releases Wiki Activity

location radius search

Browse Source
This commit is contained in:
Andreas Knuth
2024-07-24 16:16:25 +02:00
parent acec14d372
commit 38e943c18e
15 changed files with 213 additions and 60 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
bizmatch-server/src/listings/business-listing.service.ts
View File

@@ -6,18 +6,10 @@ import { Logger } from 'winston';
import * as schema from '../drizzle/schema.js';
import { businesses, PG_CONNECTION } from '../drizzle/schema.js';
import { FileService } from '../file/file.service.js';
import { GeoService } from '../geo/geo.service.js';
import { BusinessListing, CommercialPropertyListing } from '../models/db.model';
import { BusinessListingCriteria, emailToDirName, JwtUser } from '../models/main.model.js';
const EARTH_RADIUS_KM = 6371; // Erdradius in Kilometern
const getDistanceQuery = (lat: number, lon: number) => sql`
${EARTH_RADIUS_KM} * 2 * ASIN(SQRT(
POWER(SIN((${lat} - ${businesses.latitude}) * PI() / 180 / 2), 2) +
COS(${lat} * PI() / 180) * COS(${businesses.latitude} * PI() / 180) *
POWER(SIN((${lon} - ${businesses.longitude}) * PI() / 180 / 2), 2)
))
`;
import { getDistanceQuery } from '../utils.js';
@Injectable()
export class BusinessListingService {
@@ -25,15 +17,19 @@ export class BusinessListingService {
@Inject(WINSTON_MODULE_PROVIDER) private readonly logger: Logger,
@Inject(PG_CONNECTION) private conn: NodePgDatabase<typeof schema>,
private fileService: FileService,
private geoService: GeoService,
) {}
private getWhereConditions(criteria: BusinessListingCriteria): SQL[] {
const whereConditions: SQL[] = [];
if (criteria.city) {
if (criteria.city && criteria.searchType === 'exact') {
whereConditions.push(ilike(businesses.city, `%${criteria.city}%`));
}
if (criteria.city && criteria.radius && criteria.searchType === 'radius' && criteria.radius) {
const cityGeo = this.geoService.getCityWithCoords(criteria.state, criteria.city);
whereConditions.push(sql`${getDistanceQuery(businesses, parseFloat(cityGeo.latitude), parseFloat(cityGeo.longitude))} <= ${criteria.radius}`);
}
if (criteria.types && criteria.types.length > 0) {
whereConditions.push(inArray(businesses.type, criteria.types));
}