Refactor avatar upload logic: Update API routes to create a dedicated 'uploads/avatars' directory for storing user avatars, ensuring organized file management and returning the correct image URL.

app/api/admin/avatars/upload/route.ts

@@ -0,0 +1,70 @@
+import { NextResponse } from "next/server";
+import { auth } from "@/lib/auth";
+import { Role } from "@/prisma/generated/prisma/client";
+import { writeFile, mkdir } from "fs/promises";
+import { join } from "path";
+import { existsSync } from "fs";
+
+export async function POST(request: Request) {
+  try {
+    const session = await auth();
+
+    if (!session?.user || session.user.role !== Role.ADMIN) {
+      return NextResponse.json({ error: "Accès refusé" }, { status: 403 });
+    }
+
+    const formData = await request.formData();
+    const file = formData.get("file") as File;
+
+    if (!file) {
+      return NextResponse.json(
+        { error: "Aucun fichier fourni" },
+        { status: 400 }
+      );
+    }
+
+    // Vérifier le type de fichier
+    if (!file.type.startsWith("image/")) {
+      return NextResponse.json(
+        { error: "Le fichier doit être une image" },
+        { status: 400 }
+      );
+    }
+
+    // Limiter la taille (par exemple 5MB)
+    const maxSize = 5 * 1024 * 1024; // 5MB
+    if (file.size > maxSize) {
+      return NextResponse.json(
+        { error: "L'image est trop grande (max 5MB)" },
+        { status: 400 }
+      );
+    }
+
+    // Créer le dossier uploads/avatars s'il n'existe pas
+    const uploadsDir = join(process.cwd(), "public", "uploads");
+    const avatarsDir = join(uploadsDir, "avatars");
+    if (!existsSync(avatarsDir)) {
+      await mkdir(avatarsDir, { recursive: true });
+    }
+
+    // Générer un nom de fichier unique
+    const timestamp = Date.now();
+    const filename = `avatar-admin-${timestamp}-${file.name}`;
+    const filepath = join(avatarsDir, filename);
+
+    // Convertir le fichier en buffer et l'écrire
+    const bytes = await file.arrayBuffer();
+    const buffer = Buffer.from(bytes);
+    await writeFile(filepath, buffer);
+
+    // Retourner l'URL de l'image
+    const imageUrl = `/uploads/avatars/${filename}`;
+    return NextResponse.json({ url: imageUrl });
+  } catch (error) {
+    console.error("Error uploading avatar:", error);
+    return NextResponse.json(
+      { error: "Erreur lors de l'upload de l'avatar" },
+      { status: 500 }
+    );
+  }
+}