{% extends "base.html" %}
{% block title %}Admin · Leads — taller-wox{% endblock %}

{% block content %}
<section class="admin-section">
  <div class="admin-header">
    <div>
      <p class="eyebrow-light">ADMIN  ·  EN VIVO</p>
      <h1>Leads registrados</h1>
      <p class="admin-sub">
        <span id="total-leads">…</span> registros ·
        <span id="total-downloads">…</span> descargas totales
      </p>
    </div>
    <div class="admin-actions">
      <div class="live-status">
        <span class="dot dot-live" id="live-dot"></span>
        <span class="live-label" id="live-label">en vivo · 10s</span>
      </div>
      <button type="button" class="btn btn-secondary btn-icon" id="pause-btn" title="Pausar / reanudar auto-refresh">⏸</button>
      <button type="button" class="btn btn-secondary btn-icon" id="refresh-btn" title="Actualizar ahora">⟳</button>
      <a class="btn btn-secondary" href="/admin/leads.csv">Exportar CSV</a>
    </div>
  </div>

  <div class="admin-filters">
    <input type="text" id="filter" placeholder="Filtrar por nombre, email o empresa...">
    <span class="last-updated" id="last-updated">—</span>
  </div>

  <div class="admin-table-wrap">
    <table class="admin-table" id="leads-table">
      <thead>
        <tr>
          <th data-sort="id" class="sortable num">#<span class="sort-ind"></span></th>
          <th data-sort="nombre" class="sortable">Nombre<span class="sort-ind"></span></th>
          <th data-sort="email" class="sortable">Email<span class="sort-ind"></span></th>
          <th data-sort="empresa" class="sortable">Empresa<span class="sort-ind"></span></th>
          <th data-sort="times_registered" class="sortable num">Reg.<span class="sort-ind"></span></th>
          <th data-sort="created_at" class="sortable">Creado<span class="sort-ind"></span></th>
          <th data-sort="last_seen" class="sortable">Último<span class="sort-ind"></span></th>
          <th class="hide-sm">IP</th>
          <th class="hide-sm">Consent</th>
        </tr>
      </thead>
      <tbody id="leads-tbody">
        <tr><td colspan="9" class="empty">Cargando…</td></tr>
      </tbody>
    </table>
  </div>

  <div class="admin-stats-grid">
    <div class="admin-stats">
      <h2 class="admin-h2">Top empresas</h2>
      <ul class="empresa-list" id="empresas-list">
        <li class="empty">Cargando…</li>
      </ul>
    </div>
    <div class="admin-stats">
      <h2 class="admin-h2">Descargas por archivo</h2>
      <ul class="empresa-list" id="downloads-list">
        <li class="empty">Cargando…</li>
      </ul>
    </div>
  </div>
</section>

<script>
const REFRESH_MS = 10000;
let paused = false;
let timer = null;
let lastFetch = null;
let sortKey = 'created_at';
let sortDir = -1;  // -1 desc, 1 asc
let currentLeads = [];
let currentStats = null;
let filterText = '';

const $ = id => document.getElementById(id);

function fmtDate(s) {
  if (!s) return '—';
  return s.replace('T', ' ').slice(0, 19);
}

function escape(s) {
  if (s == null) return '';
  return String(s).replace(/[&<>"']/g, c => ({
    '&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#39;'
  }[c]));
}

function renderLeads() {
  const tbody = $('leads-tbody');
  let rows = currentLeads.slice();
  // sort
  rows.sort((a, b) => {
    const va = a[sortKey], vb = b[sortKey];
    if (va == null) return 1;
    if (vb == null) return -1;
    if (typeof va === 'number' && typeof vb === 'number') return (va - vb) * sortDir;
    return String(va).localeCompare(String(vb)) * sortDir;
  });
  // filter
  if (filterText) {
    const q = filterText.toLowerCase();
    rows = rows.filter(l =>
      (l.nombre || '').toLowerCase().includes(q) ||
      (l.email || '').toLowerCase().includes(q) ||
      (l.empresa || '').toLowerCase().includes(q)
    );
  }
  if (rows.length === 0) {
    tbody.innerHTML = '<tr><td colspan="9" class="empty">Sin resultados.</td></tr>';
    return;
  }
  tbody.innerHTML = rows.map(l => `
    <tr>
      <td class="muted">${l.id}</td>
      <td><strong>${escape(l.nombre)}</strong></td>
      <td><a href="mailto:${escape(l.email)}">${escape(l.email)}</a></td>
      <td>${escape(l.empresa)}</td>
      <td class="num">${l.times_registered}</td>
      <td class="muted">${fmtDate(l.created_at)}</td>
      <td class="muted">${fmtDate(l.last_seen)}</td>
      <td class="muted mono hide-sm">${escape(l.ip) || '—'}</td>
      <td class="hide-sm">${l.consent ? '<span class="pill pill-ok">✓</span>' : '<span class="pill pill-no">×</span>'}</td>
    </tr>
  `).join('');
}

function renderStats() {
  if (!currentStats) return;
  $('total-leads').textContent = currentStats.total_leads;
  $('total-downloads').textContent = currentStats.total_downloads;

  const empList = $('empresas-list');
  if (currentStats.top_5_empresas && currentStats.top_5_empresas.length) {
    empList.innerHTML = currentStats.top_5_empresas.map(e =>
      `<li><span class="empresa-name">${escape(e.empresa)}</span><span class="empresa-count">${e.count}</span></li>`
    ).join('');
  } else {
    empList.innerHTML = '<li class="empty">Sin datos</li>';
  }

  const dlList = $('downloads-list');
  const entries = Object.entries(currentStats.downloads_por_archivo || {});
  if (entries.length) {
    dlList.innerHTML = entries.map(([k, v]) =>
      `<li><span class="empresa-name mono">${escape(k)}</span><span class="empresa-count">${v}</span></li>`
    ).join('');
  } else {
    dlList.innerHTML = '<li class="empty">Sin descargas</li>';
  }
}

function renderSortIndicators() {
  document.querySelectorAll('th.sortable').forEach(th => {
    const ind = th.querySelector('.sort-ind');
    if (th.dataset.sort === sortKey) {
      ind.textContent = sortDir === -1 ? ' ↓' : ' ↑';
      th.classList.add('active');
    } else {
      ind.textContent = '';
      th.classList.remove('active');
    }
  });
}

async function refresh() {
  try {
    const [leadsResp, statsResp] = await Promise.all([
      fetch('/admin/leads.json?limit=10000', { credentials: 'include' }),
      fetch('/admin/stats', { credentials: 'include' }),
    ]);
    if (!leadsResp.ok || !statsResp.ok) throw new Error('HTTP ' + leadsResp.status);

    const newLeads = await leadsResp.json();
    currentStats = await statsResp.json();

    // Detect new leads since last refresh
    if (lastFetch !== null && newLeads.length > currentLeads.length) {
      flashNewBadge(newLeads.length - currentLeads.length);
    }
    currentLeads = newLeads;
    lastFetch = new Date();

    renderLeads();
    renderStats();
    $('last-updated').textContent = 'Actualizado: ' + lastFetch.toLocaleTimeString('es', {hour12: false});
    $('live-dot').classList.remove('dot-error');
    $('live-dot').classList.add('dot-live');
  } catch (err) {
    $('live-dot').classList.remove('dot-live');
    $('live-dot').classList.add('dot-error');
    $('live-label').textContent = 'error de conexión';
    console.error(err);
  }
}

function flashNewBadge(count) {
  const label = $('live-label');
  const original = paused ? 'pausado' : 'en vivo · 10s';
  label.textContent = `+${count} nuevo${count > 1 ? 's' : ''}`;
  label.classList.add('flash');
  setTimeout(() => {
    label.textContent = original;
    label.classList.remove('flash');
  }, 4000);
}

function startTimer() {
  stopTimer();
  if (!paused) timer = setInterval(refresh, REFRESH_MS);
}
function stopTimer() {
  if (timer) clearInterval(timer);
  timer = null;
}

document.addEventListener('DOMContentLoaded', () => {
  $('filter').addEventListener('input', e => {
    filterText = e.target.value;
    renderLeads();
  });

  document.querySelectorAll('th.sortable').forEach(th => {
    th.addEventListener('click', () => {
      const key = th.dataset.sort;
      if (sortKey === key) sortDir = -sortDir;
      else { sortKey = key; sortDir = -1; }
      renderSortIndicators();
      renderLeads();
    });
  });

  $('pause-btn').addEventListener('click', () => {
    paused = !paused;
    $('pause-btn').textContent = paused ? '▶' : '⏸';
    $('live-label').textContent = paused ? 'pausado' : 'en vivo · 10s';
    if (paused) stopTimer(); else { refresh(); startTimer(); }
  });

  $('refresh-btn').addEventListener('click', refresh);

  renderSortIndicators();
  refresh();
  startTimer();
});
</script>
{% endblock %}