#!/usr/bin/env bun
import { NON_ENGLISH_RE, JUNIOR_TITLE_RE } from "../fetch.ts";
import type { SearchConfig } from "../config.ts";

const RUBY_KEYWORDS = [
  "Ruby on Rails", "Rails Engineer", "Ruby Engineer",
  "Rails Developer", "Ruby Developer",
].join(" OR ");

const RUBY_RE = /\bruby\b|\brails\b/i;
const DE_FR_RE = /\b(wir|sind|für|mit|und|oder|eine|einen|notre|nous|vous|votre|pour|avec|dans|des)\b/gi;

interface Job { id: string; title: string; company: string; location: string; link: string }

function unescape(s: string) {
  return s.replace(/&amp;/g, "&").replace(/&lt;/g, "<").replace(/&gt;/g, ">")
    .replace(/&#39;/g, "'").replace(/&quot;/g, '"').replace(/\s+/g, " ").trim();
}

async function fetchPage(start: number): Promise<Job[]> {
  const params = new URLSearchParams({
    keywords: RUBY_KEYWORDS,
    location: "Switzerland",
    f_TPR: "r2592000",
    f_WT: "2",
    start: String(start),
  });
  const url = `https://www.linkedin.com/jobs/search/?${params}`;
  const res = await fetch(url, {
    headers: { "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36" }
  });
  const html = await res.text();
  const jobs: Job[] = [];
  const cardRe = /<div[^>]*class="[^"]*base-search-card[^"]*"[^>]*data-entity-urn="urn:li:jobPosting:(\d+)"[^>]*>([\s\S]*?)(?=<div[^>]*class="[^"]*base-search-card[^"]*"[^>]*data-entity-urn|<\/ul>)/g;
  let m;
  while ((m = cardRe.exec(html)) !== null) {
    const id = m[1];
    const chunk = m[2];
    const titleM = chunk.match(/class="[^"]*base-search-card__title[^"]*"[^>]*>\s*([\s\S]*?)\s*<\/h3>/);
    const companyM = chunk.match(/class="[^"]*base-search-card__subtitle[^"]*"[\s\S]*?<a[^>]*>\s*([\s\S]*?)\s*<\/a>/);
    const locationM = chunk.match(/class="[^"]*job-search-card__location[^"]*"[^>]*>\s*([\s\S]*?)\s*<\//);
    const title = titleM ? unescape(titleM[1].replace(/<[^>]+>/g, "")) : "";
    const company = companyM ? unescape(companyM[1].replace(/<[^>]+>/g, "")) : "";
    const location = locationM ? unescape(locationM[1]) : "";
    if (!title || !id) continue;
    jobs.push({ id, title, company, location, link: `https://www.linkedin.com/jobs/view/${id}/` });
  }
  return jobs;
}

async function checkDescription(id: string): Promise<{ hasRuby: boolean; isEnglish: boolean }> {
  const res = await fetch(`https://www.linkedin.com/jobs/view/${id}/`, {
    headers: { "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36" }
  });
  const html = await res.text();
  const deMatches = (html.match(DE_FR_RE) || []).length;
  return { hasRuby: RUBY_RE.test(html), isEnglish: deMatches < 6 };
}

const seenIds = new Set<string>();
const results: (Job & { note: string })[] = [];

for (let page = 0; page < 4; page++) {
  const jobs = await fetchPage(page * 25);
  if (!jobs.length) break;
  for (const job of jobs) {
    if (seenIds.has(job.id)) continue;
    if (NON_ENGLISH_RE.test(job.title) || JUNIOR_TITLE_RE.test(job.title)) continue;
    seenIds.add(job.id);
    process.stdout.write(`  checking: ${job.title} @ ${job.company} … `);
    const { hasRuby, isEnglish } = await checkDescription(job.id);
    if (!isEnglish) { console.log("non-English"); continue; }
    if (!hasRuby) { console.log("no Ruby"); continue; }
    console.log("RUBY!");
    results.push({ ...job, note: RUBY_RE.test(job.title) ? "title+desc" : "desc only" });
    await Bun.sleep(200);
  }
  await Bun.sleep(300);
}

console.log(`\n=== ${results.length} Ruby remote jobs (Switzerland) ===\n`);
for (const j of results) {
  console.log(`[${j.note}] ${j.title} | ${j.company} | ${j.location}`);
  console.log(`  ${j.link}`);
}