import assert from "node:assert/strict";
import test from "node:test";
import { buildRss, FeedService } from "../src/rss.js";
import { baseConfig, chapter } from "./helpers.js";

test("buildRss emits valid escaped RSS fields and a stable GUID", () => {
  const xml = buildRss([chapter], baseConfig.feed, 1700000200000);

  assert.match(xml, /<rss version="2.0"/);
  assert.match(xml, /Example &amp; Manga — Chapter 12 &amp; a half/);
  assert.match(xml, /A &lt;Team&gt;/);
  assert.match(xml, /suwayomi:chapter:42/);
  assert.match(xml, /x=1&amp;y=2/);
  assert.match(xml, /atom:link/);
});

test("FeedService caches responses and coalesces concurrent refreshes", async () => {
  let calls = 0;
  let now = 1000;
  const client = {
    async recentLibraryChapters(limit) {
      calls += 1;
      assert.equal(limit, 25);
      await Promise.resolve();
      return [chapter];
    },
  };
  const service = new FeedService(client, baseConfig.feed, () => now);

  const [first, second] = await Promise.all([service.get(), service.get()]);
  assert.strictEqual(first, second);
  assert.equal(calls, 1);

  now += 301000;
  await service.get();
  assert.equal(calls, 2);
});