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

const 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",
  "Accept-Language": "en-US,en;q=0.9",
  Accept: "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8",
};

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

// Same as fetch.ts parseJobs but WITHOUT the Switzerland location guard
function parseJobs(html: string, label: string) {
  const jobs: { id: string; title: string; company: string; link: string; location: string }[] = [];
  const idRe = /data-entity-urn="urn:li:jobPosting:(\d+)"/g;
  const positions: { id: string; start: number }[] = [];
  let m;
  while ((m = idRe.exec(html)) !== null) positions.push({ id: m[1], start: m.index });

  for (let i = 0; i < positions.length; i++) {
    const { id, start } = positions[i];
    const card = html.slice(start, Math.min(positions[i + 1]?.start ?? Infinity, start + 3000));
    const titleM = card.match(/<h3 class="base-search-card__title">\s*([\s\S]*?)\s*<\/h3>/);
    if (!titleM) continue;
    const companyM = card.match(/<h4 class="base-search-card__subtitle">[\s\S]{0,300}?<a[^>]*>\s*([\s\S]*?)\s*<\/a>/);
    const locM = card.match(/job-search-card__location[^>]*>\s*([^<]+)/);
    const jobLocation = locM ? locM[1].trim() : "";
    jobs.push({ id, title: clean(titleM[1]), company: companyM ? clean(companyM[1]) : "", location: jobLocation, link: `https://www.linkedin.com/jobs/view/${id}/` });
  }
  return jobs;
}

async function fetchJobsNoGeo(config: SearchConfig) {
  const baseUrl = buildUrl(config);
  const all: { id: string; title: string; company: string; location: string; link: string }[] = [];
  const seen = new Set<string>();

  for (let page = 0; page < 6; page++) {
    if (page > 0) await Bun.sleep(400);
    const url = `${baseUrl}&start=${page * 25}`;
    process.stdout.write(`  page ${page + 1} … `);
    const res = await fetch(url, { headers: HEADERS });
    if (!res.ok) { console.error(`failed (${res.status})`); break; }
    const html = await res.text();
    const jobs = parseJobs(html, config.label)
      .filter(j => !NON_ENGLISH_RE.test(j.title))
      .filter(j => !JUNIOR_TITLE_RE.test(j.title))
      .filter(j => !JAVA_TITLE_RE.test(j.title))
      .filter(j => SOFTWARE_TITLE_RE.test(j.title));

    let newCount = 0;
    for (const job of jobs) {
      if (!seen.has(job.id)) { seen.add(job.id); all.push(job); newCount++; }
    }
    console.log(`${jobs.length} jobs, ${newCount} new`);
    if (newCount === 0) break;
  }
  return all;
}

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

const searches: SearchConfig[] = [
  { label: "USA Remote Ruby/Rails", keywords: RUBY_KEYWORDS, location: "United States", workType: ["remote"], timePosted: "month" },
  { label: "USA Remote Ruby/Rails mid-senior+", keywords: RUBY_KEYWORDS, location: "United States", workType: ["remote"], seniority: ["mid-senior", "director"], timePosted: "month" },
];

type Job = { id: string; title: string; company: string; location: string; link: string; search: string };
const results: Job[] = [];
const seen = new Set<string>();

for (const config of searches) {
  console.log(`\n[${config.label}]`);
  const jobs = await fetchJobsNoGeo(config);
  if (jobs.length === 0) { console.log("  no jobs found"); continue; }

  let added = 0;
  for (const job of jobs) {
    if (seen.has(job.id)) continue;
    seen.add(job.id);
    results.push({ ...job, search: config.label });
    added++;
  }
  console.log(`  => ${added} new`);
}

console.log(`\n=== TOTAL: ${results.length} jobs ===\n`);
for (const j of results) {
  console.log(`${j.title} | ${j.company} | ${j.location} | ${j.id} | ${j.link}`);
}