import { NextResponse } from "next/server";
import { phyloBackendUrl } from "@/lib/env";

export const dynamic = "force-dynamic";

export async function GET(
  _req: Request,
  { params }: { params: { source: string; entryId: string[] } },
) {
  const { source, entryId } = params;
  if (!source || !entryId || entryId.length === 0) {
    return NextResponse.json({ error: "missing_params" }, { status: 400 });
  }
  const entryPath = entryId.map(encodeURIComponent).join("/");
  try {
    const res = await fetch(
      `${phyloBackendUrl()}/api/datasets/${encodeURIComponent(source)}/${entryPath}`,
      {
        headers: { Accept: "application/json" },
        cache: "no-store",
      },
    );
    if (res.status === 404) {
      return NextResponse.json({ error: "not_found" }, { status: 404 });
    }
    if (!res.ok) {
      const text = await res.text().catch(() => "");
      return NextResponse.json(
        { error: "backend_error", detail: text },
        { status: res.status },
      );
    }
    const data = await res.json();
    return NextResponse.json(data);
  } catch {
    return NextResponse.json(
      { error: "backend_unreachable" },
      { status: 502 },
    );
  }
}