feat: improve daily puzzle generation with a global Prisma client, detailed logging, and race condition handling.

app/page.tsx

@@ -1,41 +1,59 @@
 import Game from '@/components/Game';
 
+import { PrismaClient } from '@prisma/client';
+
+// PrismaClient is attached to the `global` object in development to prevent
+// exhausting your database connection limit.
+const globalForPrisma = global as unknown as { prisma: PrismaClient };
+
+const prisma = globalForPrisma.prisma || new PrismaClient();
+
+if (process.env.NODE_ENV !== 'production') globalForPrisma.prisma = prisma;
+
 async function getDailyPuzzle() {
   try {
-    // In a real app, use absolute URL or internal API call
-    // Since we are server-side, we can call the DB directly or fetch the API
-    // Calling API requires full URL (http://localhost:3000...), which is tricky in some envs
-    // Better to call DB directly here or use a helper function shared with the API
-    // But for simplicity, let's fetch the API if we can, or just use Prisma directly.
-    // Using Prisma directly is better for Server Components.
-
-    const { PrismaClient } = await import('@prisma/client');
-    const prisma = new PrismaClient();
-
     const today = new Date().toISOString().split('T')[0];
+    console.log(`[getDailyPuzzle] Checking puzzle for date: ${today}`);
+
     let dailyPuzzle = await prisma.dailyPuzzle.findUnique({
       where: { date: today },
       include: { song: true },
     });
 
     if (!dailyPuzzle) {
-      // Trigger generation logic (same as API)
-      // Duplicating logic is bad, but for now it's quickest.
-      // Ideally extract "getOrCreateDailyPuzzle" to a lib.
+      console.log('[getDailyPuzzle] No puzzle found, attempting to create...');
       const songsCount = await prisma.song.count();
+      console.log(`[getDailyPuzzle] Found ${songsCount} songs in DB`);
+
       if (songsCount > 0) {
         const skip = Math.floor(Math.random() * songsCount);
         const randomSong = await prisma.song.findFirst({ skip });
+
         if (randomSong) {
-          dailyPuzzle = await prisma.dailyPuzzle.create({
-            data: { date: today, songId: randomSong.id },
-            include: { song: true },
-          });
+          try {
+            dailyPuzzle = await prisma.dailyPuzzle.create({
+              data: { date: today, songId: randomSong.id },
+              include: { song: true },
+            });
+            console.log(`[getDailyPuzzle] Created puzzle for song: ${randomSong.title}`);
+          } catch (createError) {
+            // Handle race condition: if another request created it in the meantime
+            console.log('[getDailyPuzzle] Creation failed, trying to fetch again (likely race condition)');
+            dailyPuzzle = await prisma.dailyPuzzle.findUnique({
+              where: { date: today },
+              include: { song: true },
+            });
+          }
         }
+      } else {
+        console.log('[getDailyPuzzle] No songs available to create puzzle');
       }
     }
 
-    if (!dailyPuzzle) return null;
+    if (!dailyPuzzle) {
+      console.log('[getDailyPuzzle] Failed to get or create puzzle');
+      return null;
+    }
 
     return {
       id: dailyPuzzle.id,
@@ -46,7 +64,7 @@ async function getDailyPuzzle() {
       coverImage: dailyPuzzle.song.coverImage ? `/uploads/covers/${dailyPuzzle.song.coverImage}` : null,
     };
   } catch (e) {
-    console.error(e);
+    console.error('[getDailyPuzzle] Error:', e);
     return null;
   }
 }