Initial commit of edr-passenger-api alpha version

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

@@ -0,0 +1,26 @@
+import { Injectable, NotFoundException } from '@nestjs/common';
+import { PrismaService } from '../../common/prisma.service';
+import { CreateTrainServiceDto, CreateCoachDto, CreateSeatBatchDto } from './fleet.dto';
+
+@Injectable()
+export class FleetService {
+  constructor(private prisma: PrismaService) {}
+  getServices() { return this.prisma.trainService.findMany({ include: { trips: { take: 5, orderBy: { departureAt: 'desc' } } } }); }
+  createService(dto: CreateTrainServiceDto) { return this.prisma.trainService.create({ data: dto }); }
+  createCoach(dto: CreateCoachDto) { return this.prisma.coach.create({ data: dto }); }
+  async createSeatBatch(dto: CreateSeatBatchDto) {
+    const coach = await this.prisma.coach.findUnique({ where: { id: dto.coachId } });
+    if (!coach) throw new NotFoundException('Coach not found');
+    const seats = [];
+    for (let row = 1; row <= dto.rows; row++) for (const col of dto.cols) seats.push({ coachId: dto.coachId, row, col, label: `${row}${col}` });
+    await this.prisma.seat.createMany({ data: seats, skipDuplicates: true });
+    return { created: seats.length };
+  }
+  async getAnalytics() {
+    const [totalServices, totalTrips, totalSeats, bookedSeats] = await Promise.all([
+      this.prisma.trainService.count(), this.prisma.trip.count(),
+      this.prisma.seat.count(), this.prisma.seat.count({ where: { status: 'BOOKED' } }),
+    ]);
+    return { totalServices, totalTrips, totalSeats, bookedSeats, occupancyRate: totalSeats > 0 ? +((bookedSeats / totalSeats) * 100).toFixed(2) : 0 };
+  }
+}