import { test } from "node:test";
import assert from "node:assert/strict";
import fs from "node:fs";
import os from "node:os";
import path from "node:path";
import { loadSummary, summaryFile } from "./summary";

// Run with:
//   pnpm --filter homepage test

const PUBLIC = "/repo/homepage/public/homepage-summary.json";

test("a production build never reads E2E_HOMEPAGE_SUMMARY_FILE", () => {
  assert.equal(
    summaryFile({ NODE_ENV: "production", E2E_HOMEPAGE_SUMMARY_FILE: "/tmp/fixture.json" }, PUBLIC),
    PUBLIC,
  );
});

test("outside production (the e2e's next dev) it names the file to read", () => {
  assert.equal(
    summaryFile({ NODE_ENV: "development", E2E_HOMEPAGE_SUMMARY_FILE: "/x/.e2e-summary.json" }, PUBLIC),
    "/x/.e2e-summary.json",
  );
  assert.equal(summaryFile({ NODE_ENV: "development" }, PUBLIC), PUBLIC);
  assert.equal(summaryFile({ NODE_ENV: "development", E2E_HOMEPAGE_SUMMARY_FILE: "" }, PUBLIC), PUBLIC);
});

// A summary written before release 14 carries no `wordmarkLead` on its sites;
// it must still load, and its cards show the plain title (ArchiveCards). A lead
// that is not a proper prefix of the title (hand-edited, or not a string) is
// dropped on read, so the card never splits a title it does not start.
test("the loader keeps a wordmarkLead only when it is a proper prefix of the title", () => {
  const dir = fs.mkdtempSync(path.join(os.tmpdir(), "hp-summary-"));
  const file = path.join(dir, "homepage-summary.json");
  const site = { siteId: "a", siteTitle: "Jeralyzer", siteDescription: "", siteUrl: "https://a.example" };
  // Next types NODE_ENV as read-only; the test writes through a plain view.
  const env = process.env as Record<string, string | undefined>;
  const prev = { NODE_ENV: env.NODE_ENV, E2E: env.E2E_HOMEPAGE_SUMMARY_FILE };
  const write = (sites: unknown[]) =>
    fs.writeFileSync(file, JSON.stringify({ version: 5, totals: { transcripts: 1 }, sites }));
  try {
    delete env.NODE_ENV;
    env.E2E_HOMEPAGE_SUMMARY_FILE = file;
    write([site]);
    assert.ok(!("wordmarkLead" in loadSummary()!.sites[0]), "an older summary: no lead");
    write([{ ...site, wordmarkLead: "Jer" }]);
    assert.equal(loadSummary()?.sites[0].wordmarkLead, "Jer");
    for (const bad of ["Jeralyzer", "jer", "Xyz", "", 7, null]) {
      write([{ ...site, wordmarkLead: bad }]);
      assert.ok(!("wordmarkLead" in loadSummary()!.sites[0]), JSON.stringify(bad));
    }
  } finally {
    if (prev.NODE_ENV === undefined) delete env.NODE_ENV;
    else env.NODE_ENV = prev.NODE_ENV;
    if (prev.E2E === undefined) delete env.E2E_HOMEPAGE_SUMMARY_FILE;
    else env.E2E_HOMEPAGE_SUMMARY_FILE = prev.E2E;
    fs.rmSync(dir, { recursive: true, force: true });
  }
});