import assert from "node:assert/strict";
import fs from "node:fs";
import path from "node:path";

const sourceRoot = path.resolve("src");

function sourceFiles(directory) {
  return fs.readdirSync(directory, { withFileTypes: true }).flatMap((entry) => {
    const target = path.join(directory, entry.name);
    if (entry.isDirectory()) return sourceFiles(target);
    return /\.(tsx|ts)$/.test(entry.name) ? [target] : [];
  });
}

const sources = sourceFiles(sourceRoot).map((file) => ({
  file,
  value: fs.readFileSync(file, "utf8"),
}));

const nonSemanticClicks = sources.flatMap(({ file, value }) =>
  [...value.matchAll(/<(div|span|li|tr)\b[^>]*\bonClick\s*=/g)].map(
    (match) => `${path.relative(sourceRoot, file)}:${match.index}`,
  ),
);
assert.deepEqual(
  nonSemanticClicks,
  [],
  `Use a semantic button/link instead of clickable layout elements: ${nonSemanticClicks.join(", ")}`,
);

const preview = fs.readFileSync(
  path.join(sourceRoot, "features/campaigns/components/MessagePreviewOverlay.tsx"),
  "utf8",
);
for (const handler of ["onFirst", "onPrevious", "onNext", "onLast"]) {
  const buttonLine = preview
    .split("\n")
    .find((line) => line.includes(`<button`) && line.includes(`navigation.${handler}`));
  assert.ok(
    buttonLine?.includes("aria-label="),
    `${handler} must remain an explicitly labelled button`,
  );
}

for (const { file, value } of sources) {
  if (!value.includes('role="dialog"')) continue;
  assert.fail(
    `${path.relative(sourceRoot, file)} implements a local dialog; use Core's Dialog component`,
  );
}

console.log("Campaign accessibility structural contract passed.");