Feat: Genre system with per-genre daily puzzles

app/api/songs/route.ts

@@ -11,6 +11,7 @@ export async function GET() {
         orderBy: { createdAt: 'desc' },
         include: {
             puzzles: true,
+            genres: true,
         },
     });
 
@@ -23,6 +24,7 @@ export async function GET() {
         createdAt: song.createdAt,
         coverImage: song.coverImage,
         activations: song.puzzles.length,
+        genres: song.genres,
     }));
 
     return NextResponse.json(songsWithActivations);
@@ -144,6 +146,7 @@ export async function POST(request: Request) {
                 filename,
                 coverImage,
             },
+            include: { genres: true }
         });
 
         return NextResponse.json({
@@ -158,15 +161,24 @@ export async function POST(request: Request) {
 
 export async function PUT(request: Request) {
     try {
-        const { id, title, artist } = await request.json();
+        const { id, title, artist, genreIds } = await request.json();
 
         if (!id || !title || !artist) {
             return NextResponse.json({ error: 'Missing fields' }, { status: 400 });
         }
 
+        const data: any = { title, artist };
+
+        if (genreIds) {
+            data.genres = {
+                set: genreIds.map((gId: number) => ({ id: gId }))
+            };
+        }
+
         const updatedSong = await prisma.song.update({
             where: { id: Number(id) },
-            data: { title, artist },
+            data,
+            include: { genres: true }
         });
 
         return NextResponse.json(updatedSong);