import { test } from "node:test";
import assert from "node:assert/strict";
import { createPaperTransport } from "../src/lib/paper-api.mjs";
const origin = "https://core.example.test/projects/thesisly/research/";

test("paper transport uses the anonymous no-store API without forwarding site credentials", async () => {
  const transport = createPaperTransport(origin, async (url, options) => {
    assert.equal(url.href, origin + "papers?q=graph&page=2");
    assert.equal(options.cache, "no-store");
    assert.equal(options.redirect, "error");
    assert.equal(options.headers, undefined);
    assert.ok(options.signal instanceof AbortSignal);
    return Response.json({ items: [], total: 0, topics: [], page: 2, pageSize: 8 });
  });
  assert.deepEqual(await transport("papers?q=graph&page=2"), { ok: true, data: { items: [], total: 0, topics: [], page: 2, pageSize: 8 } });
});

test("HTTP errors stay distinguishable and never become empty search results", async () => {
  for (const status of [400, 404, 429, 503, 504]) {
    const transport = createPaperTransport(origin, async () => Response.json({ error: "private upstream detail" }, { status }));
    assert.deepEqual(await transport("papers?q=graph"), { ok: false, status });
  }
});

test("network, timeout and malformed responses are recoverable without sample substitution", async () => {
  for (const [error, status] of [[new TypeError("private connection detail"), 503], [new DOMException("deadline", "TimeoutError"), 504], [new DOMException("aborted", "AbortError"), 504]]) {
    assert.deepEqual(await createPaperTransport(origin, async () => { throw error; })("papers"), { ok: false, status });
  }
  assert.deepEqual(await createPaperTransport(origin, async () => new Response("invalid JSON"))("papers"), { ok: false, status: 502 });
});