first commit

app/api/mail/folders/route.ts

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+import { NextResponse } from "next/server";
+import { auth } from "@/auth";
+import { getMailSession } from "@/lib/mail-session";
+import { listFolders } from "@/lib/imap";
+
+// GET /api/mail/folders
+export async function GET() {
+  const session = await auth();
+  if (!session) return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+
+  const creds = await getMailSession();
+  if (!creds) return NextResponse.json({ error: "Mail oturumu yok" }, { status: 401 });
+
+  try {
+    const folders = await listFolders(creds);
+    return NextResponse.json(folders);
+  } catch (err: any) {
+    return NextResponse.json(
+      { error: "Klasörler alınamadı: " + (err?.message ?? "") },
+      { status: 502 }
+    );
+  }
+}