import { Router } from "@oak/oak";
import { resolveBandcamp } from "../services/bandcamp-stream-service.ts";

const bandcampRouter = new Router();

/**
 * Resolve a Bandcamp page to its streamable tracks.
 *
 * Public, like /api/preview: it only reads a public page and returns URLs the
 * same page already hands any visitor. Errors are thrown as APIException and
 * rendered by errorMiddleware; the client treats any failure as "fall back to
 * the iframe embed".
 */
bandcampRouter.get("/api/bandcamp/tracks", async (ctx) => {
  const url = ctx.request.url.searchParams.get("url") ?? "";
  const force = ctx.request.url.searchParams.get("force") === "1";

  const album = await resolveBandcamp(url, { force });

  // Private: the signed URLs in the body are per-fetch, so they must not be
  // held in a shared cache. Well inside the 24h signature life either way.
  ctx.response.headers.set("Cache-Control", "private, max-age=3600");
  ctx.response.body = { success: true, data: album };
});

export default bandcampRouter;