import { NextRequest, NextResponse } from "next/server";
import { auth } from "@/auth";
import { getMailSession, setMailSession, clearMailSession } from "@/lib/mail-session";
import { listFolders } from "@/lib/imap";

// POST /api/mail/auth — login to mailbox (store creds in cookie)
export async function POST(req: NextRequest) {
  const session = await auth();
  if (!session) return NextResponse.json({ error: "Unauthorized" }, { status: 401 });

  const { email, password } = await req.json();
  if (!email || !password) {
    return NextResponse.json({ error: "Email ve şifre gerekli" }, { status: 400 });
  }

  // Test the credentials by listing folders
  try {
    await listFolders({ email, password });
  } catch (err: any) {
    return NextResponse.json(
      { error: "IMAP bağlantısı başarısız: " + (err?.message ?? "Bilinmeyen hata") },
      { status: 401 }
    );
  }

  await setMailSession({ email, password });
  return NextResponse.json({ success: true, email });
}

// GET /api/mail/auth — check if mail session exists
export async function GET() {
  const session = await auth();
  if (!session) return NextResponse.json({ error: "Unauthorized" }, { status: 401 });

  const mailSession = await getMailSession();
  if (!mailSession) {
    return NextResponse.json({ connected: false });
  }
  return NextResponse.json({ connected: true, email: mailSession.email });
}

// DELETE /api/mail/auth — logout from mailbox
export async function DELETE() {
  const session = await auth();
  if (!session) return NextResponse.json({ error: "Unauthorized" }, { status: 401 });

  await clearMailSession();
  return NextResponse.json({ success: true });
}