feat: update file upload paths and add dynamic file retrieval endpoint

app/api/upload/route.ts

@@ -27,10 +27,10 @@ export async function POST(request: NextRequest) {
   const buffer = Buffer.from(bytes);
 
   const filename = `${Date.now()}-${file.name}`;
-  const filepath = path.join(process.cwd(), 'public', 'uploads', filename);
+  const filepath = path.join(process.cwd(), 'uploads', filename);
 
   await mkdir(path.dirname(filepath), { recursive: true });
   await writeFile(filepath, buffer);
 
-  return NextResponse.json({ path: `/uploads/${filename}` });
+  return NextResponse.json({ path: `/api/uploads/${filename}` });
 }

app/api/uploads/[filename]/route.ts

@@ -0,0 +1,31 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { readFile } from 'fs/promises';
+import path from 'path';
+import mime from 'mime-types';
+
+export const dynamic = 'force-dynamic';
+
+export async function GET(
+  request: NextRequest,
+  { params }: { params: Promise<{ filename: string }> },
+) {
+  const { filename } = await params;
+
+  const filepath = path.join(process.cwd(), 'uploads', filename);
+
+  try {
+    const file = await readFile(filepath);
+    const mimeType = mime.lookup(filename) || 'application/octet-stream';
+
+    const uint8Array = new Uint8Array(file);
+
+    return new NextResponse(uint8Array as any, {
+      headers: {
+        'Content-Type': mimeType,
+        'Cache-Control': 'public, max-age=31536000',
+      },
+    });
+  } catch (error) {
+    return NextResponse.json({ error: 'File not found' }, { status: 404 });
+  }
+}