{% extends 'base.html' %}
{% block title %}System Logs{% endblock %}
{% block page_title %}System Logs{% endblock %}

{% block extra_css %}
<style>
  .log-toolbar {
    display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
    background: var(--card-bg); border: 1px solid var(--border);
    border-radius: 12px; padding: 14px 16px; margin-bottom: 16px;
  }
  .log-toolbar .sep { flex: 1; }

  .level-badge {
    display: inline-block; font-size: 11px; font-weight: 600;
    padding: 2px 7px; border-radius: 4px; font-family: 'DM Mono', monospace;
    white-space: nowrap;
  }
  .level-INFO     { background: #dbeafe; color: #1e40af; }
  .level-WARNING  { background: #fef9c3; color: #854d0e; }
  .level-ERROR    { background: #fee2e2; color: #991b1b; }
  .level-CRITICAL { background: #fce7f3; color: #9d174d; }
  .level-DEBUG    { background: #f0fdf4; color: #166534; }
  .level-RAW      { background: #f1f5f9; color: #475569; }

  .stat-pill {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 3px 10px; border-radius: 20px; font-size: 12px;
    font-weight: 600; cursor: pointer; border: 1.5px solid transparent;
    transition: all .15s;
  }
  .stat-pill:hover, .stat-pill.active { border-color: currentColor; opacity: 1; }
  .stat-pill { opacity: .75; }
  .pill-ALL      { background: #f1f5f9; color: #475569; }
  .pill-INFO     { background: #dbeafe; color: #1e40af; }
  .pill-WARNING  { background: #fef9c3; color: #854d0e; }
  .pill-ERROR    { background: #fee2e2; color: #991b1b; }
  .pill-CRITICAL { background: #fce7f3; color: #9d174d; }
  .pill-DEBUG    { background: #f0fdf4; color: #166534; }

  #log-table-wrap {
    background: var(--card-bg); border: 1px solid var(--border);
    border-radius: 12px; overflow: hidden;
  }
  #log-table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
  #log-table thead th {
    font-size: 10px; font-weight: 600; text-transform: uppercase;
    letter-spacing: .07em; color: var(--muted); padding: 10px 14px;
    border-bottom: 1px solid var(--border); white-space: nowrap;
    background: #f8fafc;
  }
  #log-table tbody td {
    padding: 7px 14px; border-bottom: 1px solid var(--border);
    vertical-align: top; word-break: break-word;
  }
  #log-table tbody tr:last-child td { border-bottom: none; }
  #log-table tbody tr:hover { background: #f8fafc; }
  #log-table tbody tr.row-ERROR   td { background: #fff5f5; }
  #log-table tbody tr.row-CRITICAL td { background: #fdf2f8; }
  #log-table tbody tr.row-WARNING td { background: #fffbeb; }

  .ts-col   { white-space: nowrap; color: var(--muted); font-family: 'DM Mono', monospace; font-size: 11px; width: 148px; }
  .name-col { color: var(--muted); font-family: 'DM Mono', monospace; font-size: 11px; width: 220px; }
  .msg-col  { font-family: 'DM Mono', monospace; }

  #empty-state {
    text-align: center; padding: 60px 20px; color: var(--muted);
  }

  .auto-refresh-dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: #94a3b8; display: inline-block;
    transition: background .3s;
  }
  .auto-refresh-dot.on { background: #10b981; animation: pulse-dot 2s infinite; }
  @keyframes pulse-dot {
    0%, 100% { opacity: 1; } 50% { opacity: .4; }
  }

  #spinner { display: none; }
  #spinner.on { display: inline-block; }
</style>
{% endblock %}

{% block topbar_actions %}
<a href="{{ url_for('logs.download') }}" class="btn btn-sm btn-outline-secondary" title="Download log file">
  <i class="bi bi-download"></i>
</a>
{% endblock %}

{% block content %}
<div class="d-flex align-items-center gap-2 mb-3">
  <h5 class="mb-0 fw-semibold">Application Logs</h5>
  <span id="spinner" class="spinner-border spinner-border-sm text-secondary ms-1"></span>
  <span class="small text-muted ms-auto mono" id="log-file-path">
    {% if file_exists %}{{ log_file }}{% else %}Log file not found{% endif %}
  </span>
</div>

<!-- Stats bar -->
<div class="d-flex flex-wrap gap-2 mb-3" id="stats-bar">
  <span class="stat-pill pill-ALL active" data-level="ALL">All <span class="ms-1" id="cnt-ALL">—</span></span>
  <span class="stat-pill pill-ERROR"    data-level="ERROR">Error <span class="ms-1" id="cnt-ERROR">0</span></span>
  <span class="stat-pill pill-WARNING"  data-level="WARNING">Warning <span class="ms-1" id="cnt-WARNING">0</span></span>
  <span class="stat-pill pill-INFO"     data-level="INFO">Info <span class="ms-1" id="cnt-INFO">0</span></span>
  <span class="stat-pill pill-DEBUG"    data-level="DEBUG">Debug <span class="ms-1" id="cnt-DEBUG">0</span></span>
</div>

<!-- Toolbar -->
<div class="log-toolbar">
  <input id="search-input" type="text" class="form-control form-control-sm"
         placeholder="Search message or module…" style="max-width:240px;">
  <input id="module-input" type="text" class="form-control form-control-sm"
         placeholder="Module filter (e.g. teller)" style="max-width:180px;">
  <select id="limit-select" class="form-select form-select-sm" style="max-width:110px;">
    <option value="100">Last 100</option>
    <option value="200" selected>Last 200</option>
    <option value="500">Last 500</option>
    <option value="1000">Last 1000</option>
  </select>
  <div class="sep"></div>
  <label class="d-flex align-items-center gap-2 small text-muted mb-0" style="cursor:pointer;">
    <span class="auto-refresh-dot" id="ar-dot"></span>
    <input type="checkbox" id="auto-refresh" class="d-none"> Auto-refresh
  </label>
  <button class="btn btn-sm btn-outline-danger" id="clear-btn" title="Clear log file">
    <i class="bi bi-trash"></i> Clear
  </button>
</div>

<!-- Log table -->
<div id="log-table-wrap">
  <table id="log-table">
    <thead>
      <tr>
        <th class="ts-col">Timestamp</th>
        <th style="width:90px">Level</th>
        <th class="name-col">Module</th>
        <th>Message</th>
      </tr>
    </thead>
    <tbody id="log-body">
      <tr><td colspan="4" id="empty-state">
        <i class="bi bi-hourglass-split fs-3 d-block mb-2 opacity-25"></i>
        Loading…
      </td></tr>
    </tbody>
  </table>
</div>

<div class="d-flex justify-content-between align-items-center mt-2 small text-muted px-1">
  <span id="result-count"></span>
  <span id="last-refresh"></span>
</div>
{% endblock %}

{% block extra_js %}
<script>
(function () {
  const CSRF = document.querySelector('meta[name="csrf-token"]')?.content || '';
  let activeLevel = 'ALL';
  let arTimer    = null;

  // ── fetch & render ────────────────────────────────────────────────────────
  function load() {
    const search = document.getElementById('search-input').value.trim();
    const module = document.getElementById('module-input').value.trim();
    const limit  = document.getElementById('limit-select').value;
    const spinner = document.getElementById('spinner');
    spinner.classList.add('on');

    const params = new URLSearchParams({ level: activeLevel, search, module, limit });
    fetch(`{{ url_for('logs.api') }}?${params}`)
      .then(r => r.json())
      .then(data => {
        spinner.classList.remove('on');
        renderTable(data.entries || []);
        renderCounts(data.counts || {});
        document.getElementById('last-refresh').textContent =
          'Updated ' + new Date().toLocaleTimeString();
        document.getElementById('result-count').textContent =
          `Showing ${(data.entries||[]).length} of ${data.total_raw || 0} lines`;
      })
      .catch(() => spinner.classList.remove('on'));
  }

  function renderTable(entries) {
    const tbody = document.getElementById('log-body');
    if (!entries.length) {
      tbody.innerHTML = `<tr><td colspan="4" id="empty-state">
        <i class="bi bi-inbox fs-3 d-block mb-2 opacity-25"></i>
        No log entries match your filters.
      </td></tr>`;
      return;
    }
    const rows = entries.map(e => {
      const lvl  = e.level || 'RAW';
      const safe = t => (t||'').replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
      return `<tr class="row-${lvl}">
        <td class="ts-col">${safe(e.ts)}</td>
        <td><span class="level-badge level-${lvl}">${lvl}</span></td>
        <td class="name-col" title="${safe(e.name)}">${safe(e.name.split('.').pop())}</td>
        <td class="msg-col">${safe(e.message)}</td>
      </tr>`;
    });
    tbody.innerHTML = rows.join('');
  }

  function renderCounts(counts) {
    const total = Object.values(counts).reduce((s,v)=>s+v, 0);
    document.getElementById('cnt-ALL').textContent     = total;
    document.getElementById('cnt-ERROR').textContent   = counts['ERROR']    || 0;
    document.getElementById('cnt-WARNING').textContent = counts['WARNING']  || 0;
    document.getElementById('cnt-INFO').textContent    = counts['INFO']     || 0;
    document.getElementById('cnt-DEBUG').textContent   = counts['DEBUG']    || 0;
  }

  // ── level pills ───────────────────────────────────────────────────────────
  document.getElementById('stats-bar').addEventListener('click', function (e) {
    const pill = e.target.closest('.stat-pill');
    if (!pill) return;
    document.querySelectorAll('.stat-pill').forEach(p => p.classList.remove('active'));
    pill.classList.add('active');
    activeLevel = pill.dataset.level;
    load();
  });

  // ── search / filter inputs ────────────────────────────────────────────────
  let debounce;
  ['search-input','module-input','limit-select'].forEach(id => {
    document.getElementById(id).addEventListener('input', function () {
      clearTimeout(debounce);
      debounce = setTimeout(load, 300);
    });
  });

  // ── auto-refresh ──────────────────────────────────────────────────────────
  const arCheckbox = document.getElementById('auto-refresh');
  const arDot      = document.getElementById('ar-dot');
  document.querySelector('label[for="auto-refresh"]') ||
    document.querySelector('label').addEventListener; // noop

  // toggle by clicking the label area
  document.querySelector('.auto-refresh-dot').parentElement.addEventListener('click', function () {
    arCheckbox.checked = !arCheckbox.checked;
    arDot.classList.toggle('on', arCheckbox.checked);
    if (arCheckbox.checked) {
      arTimer = setInterval(load, 5000);
    } else {
      clearInterval(arTimer);
    }
  });

  // ── clear ─────────────────────────────────────────────────────────────────
  document.getElementById('clear-btn').addEventListener('click', function () {
    if (!confirm('Clear all log entries from the file? This cannot be undone.')) return;
    fetch('{{ url_for("logs.clear") }}', {
      method: 'POST',
      headers: { 'X-CSRFToken': CSRF, 'Content-Type': 'application/json' },
    })
    .then(r => r.json())
    .then(d => {
      if (d.status === 'ok') load();
      else alert('Clear failed: ' + d.error);
    });
  });

  // ── init ──────────────────────────────────────────────────────────────────
  load();
})();
</script>
{% endblock %}