import test from "node:test";
import assert from "node:assert/strict";
import { createHash } from "node:crypto";
import { readFile } from "node:fs/promises";

const output = process.env.WAREHOUSE_EXPORT_DIR || "out";
const canonicalOrigin = "https://www\\.bluebucket\\.dev";
const page = (route) => readFile(`${output}/playground/${route}/index.html`, "utf8");

test("exported canonical article is the current Lichen study", async () => {
  const html = await page("lichen");
  assert.match(html, new RegExp(`<link rel="canonical" href="${canonicalOrigin}\\/playground\\/lichen\\/"\\/>`, "u"));
  assert.match(html, /PLAYGROUND/u);
  assert.match(html, /SOURCE CODE/u);
  assert.match(html, /Lichen: a field of sound\./u);
  assert.match(html, /href="\/playground\/lichen\/launch\/"/u);
  assert.match(html, /\/playground\/source\/lichen-v2\/manifest\.json/u);
  assert.doesNotMatch(html, /\bV2\b/u);
  assert.doesNotMatch(html, /Compare the original|Open the original|Original ↗/u);
  assert.doesNotMatch(html, /<iframe/u);
});

test("exported canonical article keeps the gallery transition and return contract", async () => {
  const html = await page("lichen");
  assert.match(html, /data-playground-experiment="lichen"/u);
  // Shared breadcrumb anchor is intercepted by the gallery return boundary.
  assert.match(html, /aria-label="Breadcrumb"/u);
  assert.match(html, /href="\/playground\/"/u);
  assert.doesNotMatch(html, /<a\b[^>]*data-playground-return/u);
  for (const part of ["number", "title", "image"]) {
    assert.match(html, new RegExp(`data-playground-part="${part}"`, "u"));
  }
  // Moved #source must not break the previously published deep link.
  assert.match(html, /id="same-version-source"/u);
  assert.match(html, /id="source"/u);
});

test("exported canonical launch renders the approved experience directly", async () => {
  const html = await page("lichen/launch");
  assert.match(html, new RegExp(`<link rel="canonical" href="${canonicalOrigin}\\/playground\\/lichen\\/"\\/>`, "u"));
  assert.match(html, /<meta name="robots" content="noindex, follow"\/>/u);
  assert.doesNotMatch(html, /data-variant="study"|aria-label="Breadcrumb"|aria-label="Main navigation"/u);
  assert.match(html, /Back to Playground/u);
  assert.match(html, /aria-label="Hide UI"/u);
  assert.match(html, /<h1>Lichen<\/h1>/u);
  assert.match(html, /Source Code/u);
  assert.match(html, /href="\/playground\/lichen\/"/u);
  assert.doesNotMatch(html, /\bV2\b/u);
  assert.doesNotMatch(html, /Compare the original/u);
  // A direct experience, not the legacy iframe launcher used by other studies.
  assert.doesNotMatch(html, /<iframe/u);
});

test("exported legacy aliases forward to the canonical URLs", async () => {
  const article = await page("lichen/v2");
  assert.match(article, /http-equiv="refresh"/u);
  assert.match(article, /url=\/playground\/lichen\/"/u);
  assert.match(article, new RegExp(`<link rel="canonical" href="${canonicalOrigin}\\/playground\\/lichen\\/"\\/>`, "u"));
  assert.match(article, /name="robots"/u);
  assert.match(article, /noindex/u);
  assert.match(article, /location\.replace\("\/playground\/lichen\/"\+location\.search\+location\.hash\)/u);
  assert.match(article, /<a href="\/playground\/lichen\/">Lichen<\/a>/u);

  const launch = await page("lichen/v2/launch");
  assert.match(launch, /http-equiv="refresh"/u);
  assert.match(launch, /url=\/playground\/lichen\/launch\/"/u);
  assert.match(launch, new RegExp(`<link rel="canonical" href="${canonicalOrigin}\\/playground\\/lichen\\/launch\\/"\\/>`, "u"));
  assert.match(launch, /name="robots"/u);
  assert.match(launch, /location\.replace\("\/playground\/lichen\/launch\/"\+location\.search\+location\.hash\)/u);
  assert.match(launch, /<a href="\/playground\/lichen\/launch\/">Lichen interactive study<\/a>/u);
});

test("source manifest hashes match the exported mirror exactly", async () => {
  const manifest = JSON.parse(await readFile(`${output}/playground/source/lichen-v2/manifest.json`, "utf8"));
  assert.equal(manifest.study, "Lichen");
  assert.ok(manifest.files.length > 40, "manifest lists the delivered source files");
  const paths = manifest.files.map(({ path }) => path);
  assert.ok(paths.includes("content/playground/lichen.mdx"));
  assert.ok(paths.includes("components/playground/ExperimentToolbar.tsx"));
  assert.ok(paths.includes("components/playground/experiment-toolbar.module.css"));
  assert.ok(paths.includes("app/playground/[slug]/page.tsx"));
  assert.ok(paths.includes("tests/lichen-canonical.test.mjs"));
  assert.ok(paths.includes("tests/lichen-canonical-export.test.mjs"));
  assert.ok(!paths.some((entry) => entry.includes("lichen-v2.mdx")), "the moved article path is gone");
  for (const entry of manifest.files) {
    const mirrored = await readFile(`${output}/playground/source/lichen-v2/${entry.path}.txt`);
    assert.equal(createHash("sha256").update(mirrored).digest("hex"), entry.sha256, `hash for ${entry.path}`);
  }
});