import { apiJson } from "@/lib/api";
import { siteSettings } from "@/lib/services/site-settings";

// Proxy for the configured radio "now playing" provider. The provider URL is
// stored in radio_now_playing_api_url; we fetch it server-side (never exposing
// the URL or any provider key to the browser) with a short, hard timeout.
export const dynamic = "force-dynamic";

const FETCH_TIMEOUT_MS = 4000;

export async function GET(_req: Request) {
  let url: string | null = null;
  try {
    url = (await siteSettings.get("radio_now_playing_api_url", "")) || null;
  } catch {
    url = null;
  }

  // Not configured — there is nothing to play.
  if (!url) {
    return apiJson({ nowPlaying: null });
  }

  const controller = new AbortController();
  const timer = setTimeout(() => controller.abort(), FETCH_TIMEOUT_MS);
  try {
    const res = await fetch(url, {
      signal: controller.signal,
      cache: "no-store",
      headers: { accept: "application/json, text/plain, */*" },
    });

    const raw = (await res.text()).trim();
    if (raw === "") {
      return apiJson({ nowPlaying: null });
    }

    // Return parsed JSON when the provider speaks JSON, else the raw text body.
    try {
      return apiJson(JSON.parse(raw));
    } catch {
      return apiJson({ nowPlaying: raw.slice(0, 2000) });
    }
  } catch (e) {
    const aborted = e instanceof Error && e.name === "AbortError";
    return apiJson({
      error: aborted ? `Timed out after ${FETCH_TIMEOUT_MS / 1000}s` : "Fetch failed",
    });
  } finally {
    clearTimeout(timer);
  }
}