import { processDueAutoSendReservations } from "@/lib/mail-auto-send";

export const runtime = "nodejs";
export const dynamic = "force-dynamic";

function hasValidCronSecret(request: Request) {
  const expected = process.env.OFFICIAL_MAIL_CRON_SECRET?.trim();

  if (!expected) {
    return false;
  }

  const provided = request.headers.get("x-officialmail-cron-secret")?.trim();
  return provided === expected;
}

export async function POST(request: Request) {
  if (!hasValidCronSecret(request)) {
    return Response.json(
      { error: "forbidden", message: "유효한 크론 시크릿이 필요합니다." },
      { status: 403 },
    );
  }

  try {
    const summary = await processDueAutoSendReservations();

    return Response.json({
      ok: true,
      summary,
    });
  } catch (error) {
    return Response.json(
      {
        error: "auto-send-run-failed",
        message:
          error instanceof Error
            ? error.message
            : "자동발송 예약 실행에 실패했습니다.",
      },
      { status: 500 },
    );
  }
}