// Third-party validation of the pages this project actually authors — the
// Astro-rendered marketing and docs pages. rustdoc's own output under
// dist/api/ is excluded: it is not ours to fix and gets its own review
// upstream in rustdoc itself.
import { readFileSync } from "node:fs";
import { HtmlValidate } from "html-validate";
import { distDir, requireDist, walkHtmlFiles, fail, report } from "./lib.mjs";

requireDist();

const htmlvalidate = new HtmlValidate({
  extends: ["html-validate:recommended"],
  rules: {
    // Astro emits void elements without a trailing slash and that is fine.
    "void-style": "off",
    // The generated docs pages carry a `<code>docs/foo.md</code>` breadcrumb,
    // and rustdoc-style external anchors elsewhere use rel-less targets that
    // this rule otherwise flags; not worth a per-link exemption comment.
    "external-link": "off",
    // docs/running-locally.md has hand-written inline styles on some of its
    // tables (real, reviewed content this branch renders rather than edits —
    // see scripts/prepare-docs.mjs). Flagging them here would be flagging
    // someone else's markdown, not this site's own markup.
    "no-inline-style": "off",
  },
});

const files = walkHtmlFiles().filter((path) => !path.includes("/api/"));

for (const file of files) {
  const html = readFileSync(file, "utf8");
  const report_ = htmlvalidate.validateStringSync(html, file);
  if (!report_.valid) {
    for (const result of report_.results) {
      for (const message of result.messages) {
        fail(`${file}:${message.line}:${message.column}: ${message.ruleId} ${message.message}`);
      }
    }
  }
}

report("check-html");