Call auf OSRM API

backend/package.json

@@ -20,9 +20,13 @@
     "test:e2e": "jest --config ./test/jest-e2e.json"
   },
   "dependencies": {
+    "@nestjs/axios": "^2.0.0",
     "@nestjs/common": "^9.0.0",
+    "@nestjs/swagger": "^6.3.0",
     "@nestjs/core": "^9.0.0",
+    "@nestjs/mapped-types": "*",
     "@nestjs/platform-express": "^9.0.0",
+    "axios": "^1.4.0",
     "reflect-metadata": "^0.1.13",
     "rxjs": "^7.2.0"
   },

backend/src/app.module.ts

@@ -1,9 +1,11 @@
 import { Module } from '@nestjs/common';
 import { AppController } from './app.controller';
 import { AppService } from './app.service';
+import { RoutesModule } from './routes/routes.module';
+import {HttpModule} from '@nestjs/axios'
 
 @Module({
-  imports: [],
+  imports: [RoutesModule, HttpModule],
   controllers: [AppController],
   providers: [AppService],
 })

backend/src/environment.ts

@@ -0,0 +1,3 @@
+export const environment = {
+    osrm_url:'http://router.project-osrm.org'
+} 

backend/src/main.ts

@@ -1,8 +1,18 @@
 import { NestFactory } from '@nestjs/core';
+import { SwaggerModule, DocumentBuilder } from '@nestjs/swagger';
 import { AppModule } from './app.module';
 
 async function bootstrap() {
   const app = await NestFactory.create(AppModule);
+
+  const config = new DocumentBuilder()
+    .setTitle('Individuelle Berner Stadtspaziergänge')
+    .setDescription('API Routenfinder')
+    .setVersion('1.0')
+    .addTag('spaziergaenge')
+    .build();
+  const document = SwaggerModule.createDocument(app, config);
+  SwaggerModule.setup('api', app, document);
   await app.listen(3000);
 }
 bootstrap();

backend/src/routes/dto/route.dto.ts

@@ -0,0 +1,3 @@
+export class RouteDto{
+
+}

backend/src/routes/routes.controller.spec.ts

@@ -0,0 +1,20 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { RoutesController } from './routes.controller';
+import { RoutesService } from './routes.service';
+
+describe('RoutesController', () => {
+  let controller: RoutesController;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      controllers: [RoutesController],
+      providers: [RoutesService],
+    }).compile();
+
+    controller = module.get<RoutesController>(RoutesController);
+  });
+
+  it('should be defined', () => {
+    expect(controller).toBeDefined();
+  });
+});

backend/src/routes/routes.controller.ts

@@ -0,0 +1,33 @@
+import { Controller, Get, Query, HttpStatus } from '@nestjs/common';
+import { RoutesService } from './routes.service';
+import { ApiParam } from '@nestjs/swagger';
+
+export interface RouteQueryParams {
+  coordinates: string,
+  mode: string
+}
+
+@Controller('routes')
+export class RoutesController {
+
+  constructor(private readonly routesService: RoutesService) {}
+
+  @Get('health')
+  health(){
+    return HttpStatus.OK;
+  }
+
+  @Get()
+  @ApiParam({
+    name: 'routeQueryParams',
+    description: 'coordinates, mode',
+  })
+  findRoute(@Query() routeQueryParams: RouteQueryParams) {
+    console.log(routeQueryParams)
+    try {
+      return this.routesService.getRoute(routeQueryParams.coordinates, routeQueryParams.mode);
+    } catch(error){
+      throw new Error(error);
+    }
+  }
+}

backend/src/routes/routes.module.ts

@@ -0,0 +1,11 @@
+import { Module } from '@nestjs/common';
+import { RoutesService } from './routes.service';
+import { RoutesController } from './routes.controller';
+import {HttpModule} from '@nestjs/axios'
+
+@Module({
+  imports: [RoutesModule, HttpModule],
+  controllers: [RoutesController],
+  providers: [RoutesService]
+})
+export class RoutesModule {}

backend/src/routes/routes.service.spec.ts

@@ -0,0 +1,18 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { RoutesService } from './routes.service';
+
+describe('RoutesService', () => {
+  let service: RoutesService;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [RoutesService],
+    }).compile();
+
+    service = module.get<RoutesService>(RoutesService);
+  });
+
+  it('should be defined', () => {
+    expect(service).toBeDefined();
+  });
+});

backend/src/routes/routes.service.ts

@@ -0,0 +1,21 @@
+import { HttpService } from '@nestjs/axios';
+import { Injectable } from '@nestjs/common';
+import { firstValueFrom, map } from 'rxjs';
+import { environment } from 'src/environment';
+
+@Injectable()
+export class RoutesService {
+    osrm_url = environment.osrm_url;
+
+    constructor(private httpService: HttpService){}
+
+    async getRoute(coordinates: any, mode: any) {
+        console.log('params: ' + coordinates + ' mode ' + mode)
+        console.log(`${this.osrm_url}/route/v1/${mode}/${coordinates}?geometries=geojson`)
+        const routes$ = this.httpService.get(`${this.osrm_url}/route/v1/${mode}/${coordinates}?geometries=geojson`);
+
+        return this.httpService.get(`${this.osrm_url}/route/v1/${mode}/${coordinates}?geometries=geojson`).pipe(map((response)  => {
+            return response.data;
+        }))
+    }
+}