#!/usr/bin/env node

import fs from "node:fs";

import path from "node:path";

const ROOT = path.resolve(new URL("..", import.meta.url).pathname);

const BANNED = [

  "slashed", "gutted", "slammed", "blasted", "massive", "tiny", "huge",

  "sweeping", "radical", "extreme", "controversial", "popular", "unpopular",

  "landmark", "historic", "devastating", "crippling", "generous", "stingy",

  "bloated", "wasteful", "common-sense", "partisan", "crucial", "vital",

  "narrowly", "barely", "overwhelmingly", "finally", "surprisingly", "key",

];

const ALLOW_HOSTS = [

  "congress.gov", "api.congress.gov", "govinfo.gov", "usaspending.gov",

  "fiscaldata.treasury.gov", "cbo.gov", "gpo.gov", "clerk.house.gov",

  "senate.gov", "openstates.org", "house.gov", "whitehouse.gov",

];

const ALLOW_HOST_RE = /(^|\.)gov$|\.gov$/i;

const SCANS = [

  "lib/mock-data.ts",

  "app/register/page.tsx",

  "app/bill/[id]/page.tsx",

  "app/spending/page.tsx",

  "app/states/page.tsx",

  "app/how-we-pick/page.tsx",

  "app/who-pays/page.tsx",

  "components/site-footer.tsx",

];

let violations = 0;

function checkAllowed(url, file) {

  let host;

  try {

    host = new URL(url).host.toLowerCase().replace(/^www\./, "");

  } catch {

    violations++;

    console.log(`  ✗ ${file}: malformed sourceUrl "${url}"`);

    return;

  }

  const ok = ALLOW_HOST_RE.test(host) || ALLOW_HOSTS.includes(host);

  if (!ok) {

    violations++;

    console.log(`  ✗ ${file}: source host "${host}" not allowlisted`);

  }

}

console.log("Docket neutrality lint");

console.log("----------------------");

const bannedRe = new RegExp(`\\b(${BANNED.join("|")})\\b`, "gi");

console.log("\n#2 no adjectives");

for (const rel of SCANS) {

  const file = path.join(ROOT, rel);

  if (!fs.existsSync(file)) {

    console.log(`  - ${rel}: skipped (not found)`);

    continue;

  }

  const text = fs.readFileSync(file, "utf8");

  let m;

  while ((m = bannedRe.exec(text))) {

    if (/BANNED|banned/i.test(text.slice(Math.max(0, m.index - 60), m.index))) {

      continue;

    }

    violations++;

    const line = text.slice(0, m.index).split("\n").length;

    console.log(`  ✗ ${rel}:${line} banned word "${m[1]}"`);

  }

  console.log(`  - ${rel}: scanned`);

}

console.log("\n#1 government sources");

const dataFile = path.join(ROOT, "lib/mock-data.ts");

if (fs.existsSync(dataFile)) {

  const text = fs.readFileSync(dataFile, "utf8");

  const urlRe = /sourceUrl:\s*"([^"]+)"/g;

  let m;

  let count = 0;

  while ((m = urlRe.exec(text))) {

    checkAllowed(m[1], "lib/mock-data.ts");

    count++;

  }

  console.log(`  - checked ${count} sourceUrl values`);

}

console.log("\n----------------------");

if (violations === 0) {

  console.log("PASS - 0 neutrality violations");

  process.exit(0);

}

console.log(`FAIL - ${violations} neutrality violation(s)`);

process.exit(1);