feat: bootstrap NestJS backend with auth, stations, users, health-check, now-playing

src/now-playing/now-playing.service.ts

@@ -0,0 +1,54 @@
+import { Injectable, Logger } from '@nestjs/common';
+import { PrismaService } from '../prisma/prisma.service';
+import { NowPlayingGateway } from './now-playing.gateway';
+
+@Injectable()
+export class NowPlayingService {
+  private readonly logger = new Logger(NowPlayingService.name);
+
+  constructor(
+    private readonly prisma: PrismaService,
+    private readonly gateway: NowPlayingGateway,
+  ) {}
+
+  async updateNowPlaying(
+    stationId: string,
+    data: { song: string; artist: string; coverUrl?: string },
+  ) {
+    const nowPlaying = await this.prisma.nowPlaying.upsert({
+      where: { stationId },
+      create: {
+        stationId,
+        song: data.song,
+        artist: data.artist,
+        coverUrl: data.coverUrl,
+      },
+      update: {
+        song: data.song,
+        artist: data.artist,
+        coverUrl: data.coverUrl,
+      },
+    });
+
+    this.gateway.broadcastNowPlaying(stationId, {
+      song: data.song,
+      artist: data.artist,
+      coverUrl: data.coverUrl,
+      updatedAt: nowPlaying.updatedAt,
+    });
+
+    return nowPlaying;
+  }
+
+  async getNowPlaying(stationId: string) {
+    return this.prisma.nowPlaying.findUnique({
+      where: { stationId },
+    });
+  }
+
+  async getAllNowPlaying() {
+    return this.prisma.nowPlaying.findMany({
+      include: { station: true },
+    });
+  }
+}