Project Initialization

apps/edr-passenger-api/src/modules/stations/stations.service.ts

@@ -0,0 +1,34 @@
+import { Injectable, NotFoundException } from '@nestjs/common';
+import { InjectRepository } from '@nestjs/typeorm';
+import { Repository } from 'typeorm';
+
+import { CreateStationDto } from './dto/create-station.dto';
+import { Station } from './entities/station.entity';
+
+@Injectable()
+export class StationsService {
+  constructor(
+    @InjectRepository(Station)
+    private readonly stationsRepository: Repository<Station>,
+  ) {}
+
+  /** Register a new station. */
+  create(dto: CreateStationDto): Promise<Station> {
+    const entity = this.stationsRepository.create(dto);
+    return this.stationsRepository.save(entity);
+  }
+
+  /** List every station (alphabetical). */
+  findAll(): Promise<Station[]> {
+    return this.stationsRepository.find({ order: { name: 'ASC' } });
+  }
+
+  /** Get a single station by ID. */
+  async findById(id: string): Promise<Station> {
+    const station = await this.stationsRepository.findOne({ where: { id } });
+    if (!station) {
+      throw new NotFoundException(`Station ${id} not found`);
+    }
+    return station;
+  }
+}