---
import { getTotalRuleCount, getTotalExporterCount, data } from '../data/rules';
import { GITHUB_API_REPO_URL, GITHUB_URL } from '../data/site';

const totalRules = getTotalRuleCount();
const totalExporters = getTotalExporterCount();
const totalGroups = data.groups.length;

const STAR_MILESTONE = 10000;
const MILESTONE_LABEL = '10k';

let stars = 0;
try {
  const res = await fetch(GITHUB_API_REPO_URL, {
    headers: { 'Accept': 'application/vnd.github+json' }
  });
  if (res.ok) {
    const json = await res.json();
    stars = json.stargazers_count ?? 0;
  }
} catch {}

const starsLabel = stars > 0 ? (stars >= 1000 ? `${(stars / 1000).toFixed(1)}k` : String(stars)) : '—';
const progressPct = stars > 0 ? Math.min(100, (stars / STAR_MILESTONE) * 100).toFixed(1) : '0';
const starsFormatted = stars > 0 ? stars.toLocaleString('en') : '';
const milestoneFormatted = STAR_MILESTONE.toLocaleString('en');
---

<div class="flex flex-wrap justify-center gap-6 sm:gap-10 py-4 text-center">
  <div>
    <div class="text-2xl font-bold text-brand dark:text-brand-dark">{totalRules}</div>
    <div class="text-xs text-slate-500 dark:text-slate-400 mt-0.5">alert rules</div>
  </div>
  <div>
    <div class="text-2xl font-bold text-brand dark:text-brand-dark">{totalExporters}</div>
    <div class="text-xs text-slate-500 dark:text-slate-400 mt-0.5">exporters</div>
  </div>
  <div>
    <div class="text-2xl font-bold text-brand dark:text-brand-dark">{totalGroups}</div>
    <div class="text-xs text-slate-500 dark:text-slate-400 mt-0.5">categories</div>
  </div>
  <a href={GITHUB_URL} target="_blank" rel="noopener noreferrer" class="group">
    <div class="text-2xl font-bold text-brand dark:text-brand-dark flex items-center justify-center gap-1">
      <svg class="w-5 h-5 text-yellow-500" fill="currentColor" viewBox="0 0 24 24" aria-hidden="true">
        <path d="M12 2l3.09 6.26L22 9.27l-5 4.87 1.18 6.88L12 17.77l-6.18 3.25L7 14.14 2 9.27l6.91-1.01L12 2z" />
      </svg>
      <span id="statsbar-stars">{starsLabel}</span>
    </div>
    <div class="text-xs text-slate-500 dark:text-slate-400 mt-0.5 group-hover:text-brand dark:group-hover:text-brand-dark transition-colors">engineers starred</div>
  </a>
</div>

<!-- Milestone progress bar -->
<div id="star-milestone-row" class={`mt-2 px-4 ${stars === 0 ? 'opacity-0' : ''}`}>
  <div class="max-w-xs mx-auto">
    <div class="flex items-center justify-between text-xs text-slate-400 dark:text-slate-500 mb-1">
      <span>
        <span id="statsbar-stars-count">{starsFormatted}</span><span id="statsbar-milestone-suffix">{stars > 0 ? ` / ${milestoneFormatted} — help us reach ${MILESTONE_LABEL}!` : ''}</span>
      </span>
      <a href={GITHUB_URL} target="_blank" rel="noopener noreferrer" class="text-yellow-500 hover:text-yellow-600 dark:text-yellow-400 dark:hover:text-yellow-300 font-medium transition-colors flex items-center gap-0.5 ml-2 flex-shrink-0">
        <svg class="w-3 h-3" fill="currentColor" viewBox="0 0 24 24" aria-hidden="true">
          <path d="M12 2l3.09 6.26L22 9.27l-5 4.87 1.18 6.88L12 17.77l-6.18 3.25L7 14.14 2 9.27l6.91-1.01L12 2z"/>
        </svg>
        Star it
      </a>
    </div>
    <div class="bg-slate-100 dark:bg-slate-800 rounded-full h-1.5">
      <div
        id="statsbar-star-bar"
        class="bg-yellow-400 dark:bg-yellow-500 h-1.5 rounded-full transition-all duration-700"
        style={`width: ${progressPct}%`}
      ></div>
    </div>
  </div>
</div>

<script define:vars={{ STAR_MILESTONE, MILESTONE_LABEL }}>
  const starsEl = document.getElementById('statsbar-stars');
  const starsCountEl = document.getElementById('statsbar-stars-count');
  const milestoneSuffixEl = document.getElementById('statsbar-milestone-suffix');
  const barEl = document.getElementById('statsbar-star-bar');
  const milestoneRow = document.getElementById('star-milestone-row');

  if (starsEl) {
    const CACHE_KEY = 'gh_stars_apa';
    const CACHE_TTL = 3600 * 1000;

    function fmt(n) {
      return n >= 1000 ? `${(n / 1000).toFixed(1)}k` : String(n);
    }

    function updateMilestone(n) {
      if (starsCountEl) starsCountEl.textContent = n.toLocaleString('en');
      if (milestoneSuffixEl) milestoneSuffixEl.textContent = ` / ${STAR_MILESTONE.toLocaleString('en')} — help us reach ${MILESTONE_LABEL}!`;
      if (barEl) barEl.style.width = `${Math.min(100, (n / STAR_MILESTONE) * 100).toFixed(1)}%`;
      if (milestoneRow) milestoneRow.classList.remove('opacity-0');
    }

    const cached = sessionStorage.getItem(CACHE_KEY);
    let isFresh = false;
    if (cached) {
      const { value, ts } = JSON.parse(cached);
      if (Date.now() - ts < CACHE_TTL) {
        starsEl.textContent = fmt(value);
        updateMilestone(value);
        isFresh = true;
      }
    }

    if (!isFresh) fetch('https://api.github.com/repos/samber/awesome-prometheus-alerts', {
      headers: { Accept: 'application/vnd.github+json' },
    })
      .then((r) => r.ok ? r.json() : null)
      .then((data) => {
        if (data?.stargazers_count) {
          starsEl.textContent = fmt(data.stargazers_count);
          updateMilestone(data.stargazers_count);
          sessionStorage.setItem(CACHE_KEY, JSON.stringify({ value: data.stargazers_count, ts: Date.now() }));
        }
      })
      .catch(() => {});
  }
</script>