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src/app/api/audiobooks/covers/route.ts

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+/**
+ * Component: Audiobook Covers API Route
+ * Documentation: documentation/frontend/pages/login.md
+ *
+ * Serves random popular audiobook covers for login page floating animations
+ */
+
+import { NextResponse } from 'next/server';
+import { prisma } from '@/lib/db';
+
+/**
+ * GET /api/audiobooks/covers?count=100
+ * Get random popular audiobook covers for login page
+ *
+ * Returns lightweight cover data without matching overhead.
+ * Returns up to 200 covers for immersive login screen experience.
+ */
+export async function GET() {
+  try {
+    // Fetch all popular audiobooks with covers (up to 200)
+    const audiobooks = await prisma.audibleCache.findMany({
+      where: {
+        isPopular: true,
+        cachedCoverPath: {
+          not: null,
+        },
+      },
+      orderBy: {
+        popularRank: 'asc',
+      },
+      take: 200,
+      select: {
+        asin: true,
+        title: true,
+        author: true,
+        cachedCoverPath: true,
+        coverArtUrl: true,
+      },
+    });
+
+    // Transform to cover URLs
+    const covers = audiobooks.map((book) => {
+      // Prefer cached cover, fallback to original URL
+      let coverUrl = book.coverArtUrl || '';
+      if (book.cachedCoverPath) {
+        const filename = book.cachedCoverPath.split('/').pop();
+        coverUrl = `/api/cache/thumbnails/${filename}`;
+      }
+
+      return {
+        asin: book.asin,
+        title: book.title,
+        author: book.author,
+        coverUrl,
+      };
+    });
+
+    // Shuffle for random distribution
+    const shuffled = covers.sort(() => Math.random() - 0.5);
+
+    return NextResponse.json({
+      success: true,
+      covers: shuffled,
+      count: shuffled.length,
+    });
+  } catch (error) {
+    console.error('Failed to get audiobook covers:', error);
+
+    // Return empty array on error (login page will show placeholders)
+    return NextResponse.json({
+      success: false,
+      covers: [],
+      count: 0,
+    });
+  }
+}