(function () {
  'use strict';

  const API = {
    providers: '/api/max/providers/status?symbol=BTC',
    resources: '/api/max/resources/summary',
    pages: '/api/max/pages/functionality',
    market: '/api/max/market/snapshot?symbols=BTC,ETH,SOL,BNB,XRP,DOGE,AVAX',
    sentiment: '/api/max/social/sentiment?coin=BTC',
    kucoin: '/api/max/futures/kucoin/validate/BTCUSDT',
    pressure: '/api/max/pressure/status',
    fallbackPlan: '/api/max/fallback/plan',
    systemVisual: '/api/max/system/visual?symbol=BTC',
    help: '/api/max/help'
  };

  function panel() {
    return window.TopServicePanel;
  }

  function refreshSummary() {
    const tsp = panel();
    if (!tsp) return;
    const parts = window._topServiceSummary || {};
    tsp.setSummary(tsp.buildSummary([
      `Page: ${tsp.pageId()}`,
      parts.bridge,
      parts.native
    ]));
  }

  function css() {
    if (document.getElementById('max-provider-bridge-style')) return;
    const style = document.createElement('style');
    style.id = 'max-provider-bridge-style';
    style.textContent = `
      .max-provider-bridge{padding:16px;border:1px solid rgba(148,163,184,.28);border-radius:18px;background:linear-gradient(135deg,rgba(255,255,255,.90),rgba(240,249,255,.75));backdrop-filter:blur(14px);font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:#0f172a;}
      .max-provider-bridge__head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;}
      .max-provider-bridge__title{font-size:14px;font-weight:800;letter-spacing:.02em;display:flex;align-items:center;gap:8px;}
      .max-provider-bridge__subtitle{font-size:11px;color:#64748b;margin-top:2px;}
      .max-provider-bridge__grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;}
      .max-provider-bridge__card{padding:12px;border-radius:14px;background:rgba(255,255,255,.76);border:1px solid rgba(226,232,240,.85);min-height:74px;}
      .max-provider-bridge__label{font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:#64748b;font-weight:800;}
      .max-provider-bridge__value{font-size:22px;font-weight:900;margin-top:4px;color:#111827;}
      .max-provider-bridge__value.small{font-size:13px;line-height:1.35;word-break:break-word;}
      .max-provider-bridge__pill{display:inline-flex;align-items:center;gap:6px;padding:5px 9px;border-radius:999px;font-size:10px;font-weight:800;border:1px solid rgba(16,185,129,.26);background:#ecfdf5;color:#047857;}
      .max-provider-bridge__dot{width:7px;height:7px;border-radius:999px;background:#10b981;box-shadow:0 0 0 4px rgba(16,185,129,.14);animation:maxProviderPulse 1.8s ease-in-out infinite;}
      .max-provider-bridge__links{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
      .max-provider-bridge__links a{font-size:11px;font-weight:700;text-decoration:none;color:#2563eb;background:#eff6ff;border:1px solid #bfdbfe;border-radius:999px;padding:5px 9px;}
      .max-provider-bridge__warn{font-size:11px;color:#92400e;background:#fffbeb;border:1px solid #fde68a;border-radius:10px;padding:8px 10px;margin-top:10px;}
      @keyframes maxProviderPulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.48;transform:scale(.82)}}
      @media(max-width:900px){.max-provider-bridge__grid{grid-template-columns:repeat(2,minmax(0,1fr));}.max-provider-bridge{padding:12px}}
      @media(max-width:540px){.max-provider-bridge__grid{grid-template-columns:1fr}}
    `;
    document.head.appendChild(style);
  }

  async function getJson(url) {
    const controller = new AbortController();
    const timer = setTimeout(() => controller.abort(), 12000);
    try {
      const res = await fetch(url, { signal: controller.signal, headers: { Accept: 'application/json' } });
      if (!res.ok) throw new Error(`HTTP ${res.status}`);
      return await res.json();
    } finally {
      clearTimeout(timer);
    }
  }

  function render(state) {
    css();
    const tsp = panel();
    if (!tsp || document.getElementById('max-provider-bridge-section')) return;

    const providers = state.providers || {};
    const resources = state.resources || {};
    const market = state.market || {};
    const sentiment = state.sentiment || {};
    const kucoin = state.kucoin || {};
    const prices = Array.isArray(market.items) ? market.items.filter(x => x && x.success) : [];
    const bestPrice = prices[0];
    const topSource = bestPrice
      ? `${bestPrice.symbol || 'BTC'} ${bestPrice.price ? '$' + Number(bestPrice.price).toLocaleString() : ''} · ${bestPrice.source || 'source'}`
      : 'No live market response yet';
    const fng = sentiment.fear_greed && sentiment.fear_greed.ok ? sentiment.fear_greed.data : null;

    const html = `
      <section id="max-provider-bridge" class="max-provider-bridge">
        <div class="max-provider-bridge__head">
          <div>
            <div class="max-provider-bridge__title">⚡ Live Provider Bridge <span class="max-provider-bridge__pill"><span class="max-provider-bridge__dot"></span> functional layer</span></div>
            <div class="max-provider-bridge__subtitle">Connected to the maximum-provider API layer. Page: <strong>${tsp.pageId()}</strong></div>
          </div>
          <div class="max-provider-bridge__pill">/api/max</div>
        </div>
        <div class="max-provider-bridge__grid">
          <div class="max-provider-bridge__card"><div class="max-provider-bridge__label">Providers</div><div class="max-provider-bridge__value">${providers.healthy_count || 0}/${providers.probed_count || 0}</div></div>
          <div class="max-provider-bridge__card"><div class="max-provider-bridge__label">Registry</div><div class="max-provider-bridge__value">${((resources.summary || {}).comprehensive_resources || 0) + ((resources.summary || {}).unified_registry_entries || 0)}</div></div>
          <div class="max-provider-bridge__card"><div class="max-provider-bridge__label">Market sample</div><div class="max-provider-bridge__value small">${topSource}</div></div>
          <div class="max-provider-bridge__card"><div class="max-provider-bridge__label">Futures / Sentiment</div><div class="max-provider-bridge__value small">KuCoin: ${kucoin.validated ? 'validated' : 'not validated yet'}<br>F&G: ${fng ? `${fng.value} ${fng.classification || ''}` : 'pending'}</div></div>
        </div>
        <div class="max-provider-bridge__links">
          <a href="/api/max/providers/status?include_slow=true" target="_blank" rel="noreferrer">All provider health</a>
          <a href="/api/max/fallback/plan" target="_blank" rel="noreferrer">Fallback plan</a>
          <a href="/api/max/pressure/status" target="_blank" rel="noreferrer">Pressure status</a>
          <a href="/api/max/resources/summary" target="_blank" rel="noreferrer">Resource registry</a>
          <a href="/api/max/market/snapshot" target="_blank" rel="noreferrer">Market snapshot</a>
          <a href="/api/max/trading/ohlcv/BTCUSDT" target="_blank" rel="noreferrer">BTC OHLCV</a>
          <a href="/api/max/trading/orderbook/BTCUSDT" target="_blank" rel="noreferrer">BTC orderbook</a>
          <a href="/api/max/futures/kucoin/validate/BTCUSDT" target="_blank" rel="noreferrer">KuCoin futures</a>
          <a href="/api/max/system/visual?symbol=BTC" target="_blank" rel="noreferrer">System visual API</a>
          <a href="/api/max/help" target="_blank" rel="noreferrer">Max API help</a>
        </div>
        ${providers.down_count ? `<div class="max-provider-bridge__warn">${providers.down_count} provider probe(s) failed on this check; fallbacks remain available through the chain.</div>` : ''}
      </section>
    `;

    tsp.mountSection('max-provider-bridge-section', '', html);
    window._topServiceSummary = window._topServiceSummary || {};
    window._topServiceSummary.bridge = `Providers ${providers.healthy_count || 0}/${providers.probed_count || 0}`;
    refreshSummary();
  }

  async function boot() {
    const tsp = panel();
    if (!tsp || tsp.shouldSkip()) return;

    tsp.ensure(`Page: ${tsp.pageId()} · Loading…`);

    const state = {};
    const jobs = [
      ['providers', API.providers],
      ['resources', API.resources],
      ['pages', API.pages],
      ['market', API.market],
      ['sentiment', API.sentiment],
      ['kucoin', API.kucoin]
    ];
    await Promise.all(jobs.map(async ([key, url]) => {
      try { state[key] = await getJson(url); }
      catch (error) { state[key] = { success: false, error: String(error && error.message || error) }; }
    }));
    render(state);
    window.MAX_PROVIDER_BRIDGE_STATE = state;
  }

  function start() {
    if (!window.TopServicePanel) {
      console.warn('TopServicePanel not loaded; bridge panel skipped');
      return;
    }
    boot();
  }

  if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', start);
  else start();
})();