{% extends "base.html" %}
{% set active_nav = "graph" %}

{% block title %}Graph - LSMC Atlas{% endblock %}

{% block head %}
<script src="https://cdnjs.cloudflare.com/ajax/libs/cytoscape/3.28.1/cytoscape.min.js" defer></script>
<script src="https://cdn.jsdelivr.net/npm/dagre@0.8.5/dist/dagre.min.js" defer></script>
<script src="https://cdn.jsdelivr.net/npm/cytoscape-dagre@2.5.0/cytoscape-dagre.min.js" defer></script>
<style>
  .graph-shell {
    display: grid;
    gap: var(--space-lg);
    grid-template-columns: minmax(0, 1fr) 340px;
  }

  .graph-stage {
    min-height: 72vh;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    background: radial-gradient(circle at 18% 22%, #1f1a31 0%, #0e0f14 52%, #090a0e 100%);
    overflow: hidden;
    position: relative;
  }

  #graph-canvas {
    width: 100%;
    height: 100%;
    min-height: 72vh;
  }

  .graph-loading {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: var(--text-sm);
    letter-spacing: 0.01em;
  }

  .graph-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    min-width: 0;
  }

  .graph-panel {
    background: linear-gradient(160deg, rgba(20, 20, 28, 0.94), rgba(15, 17, 24, 0.94));
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: var(--space-md);
  }

  .graph-panel h3 {
    margin: 0 0 var(--space-sm) 0;
    font-size: var(--text-base);
  }

  .graph-controls {
    display: grid;
    gap: var(--space-sm);
  }

  .graph-controls label {
    font-size: var(--text-xs);
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.04em;
  }

  .graph-controls input,
  .graph-controls select {
    width: 100%;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: var(--space-sm);
    font-size: var(--text-sm);
  }

  .graph-actions {
    display: grid;
    gap: var(--space-sm);
    grid-template-columns: 1fr 1fr;
    margin-top: var(--space-sm);
  }

  .graph-status {
    margin-top: var(--space-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: var(--space-sm);
    font-size: var(--text-xs);
    color: var(--text-secondary);
    background: rgba(12, 13, 20, 0.85);
    min-height: 34px;
  }

  .graph-status.ok {
    color: #b8f9d2;
    border-color: #2d7d52;
  }

  .graph-status.warn {
    color: #ffd7a8;
    border-color: #8d6b2f;
  }

  .graph-status.error {
    color: #ffc2c2;
    border-color: #8b3d3d;
  }

  .legend-items {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
  }

  .legend-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border-radius: 999px;
    padding: 4px 8px;
    background: rgba(255, 255, 255, 0.04);
    font-size: 12px;
    color: var(--text-secondary);
  }

  .legend-swatch {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.25);
  }

  .detail-grid {
    display: grid;
    grid-template-columns: minmax(110px, 170px) 1fr;
    gap: 6px 10px;
    margin-bottom: var(--space-sm);
  }

  .detail-key {
    color: var(--text-secondary);
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    word-break: break-word;
  }

  .detail-value {
    color: var(--text-primary);
    font-size: var(--text-sm);
    word-break: break-word;
  }

  .json-block {
    margin: 0;
    max-height: 240px;
    overflow: auto;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    padding: var(--space-sm);
    background: rgba(0, 0, 0, 0.35);
    font-family: var(--font-mono);
    font-size: 12px;
    line-height: 1.35;
    color: #dce6ff;
  }

  .graph-gesture-hint {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: var(--space-sm);
    line-height: 1.4;
  }

  @media (max-width: 1120px) {
    .graph-shell {
      grid-template-columns: 1fr;
    }

    .graph-stage,
    #graph-canvas {
      min-height: 56vh;
    }

    .detail-grid {
      grid-template-columns: 1fr;
    }
  }
</style>
{% endblock %}

{% block content %}
<div class="page-header">
  <div>
    <h1 class="page-title">Graph Viewer</h1>
    <p class="page-subtitle">TapDB lineage explorer (read-only)</p>
  </div>
</div>

<div class="graph-shell">
  <section class="graph-stage" aria-label="Graph canvas">
    <div id="graph-canvas">
      <div class="graph-loading">Loading graph viewer...</div>
    </div>
  </section>

  <aside class="graph-sidebar">
    <section class="graph-panel">
      <h3>Explore</h3>
      <div class="graph-controls">
        <label for="graph-start-euid">Start EUID</label>
        <input id="graph-start-euid" type="text" value="{{ default_start_euid }}" placeholder="Optional node EUID">

        <label for="graph-depth">Depth</label>
        <input id="graph-depth" type="number" min="1" max="{{ max_depth }}" value="{{ default_depth }}">

        {% if can_cross_tenant %}
        <label for="graph-tenant-id">Tenant</label>
        <input id="graph-tenant-id" type="text" value="{{ default_tenant_id }}" placeholder="Tenant UUID">
        {% endif %}

        <label for="graph-layout">Layout</label>
        <select id="graph-layout">
          <option value="dagre">dagre</option>
          <option value="cose">cose</option>
          <option value="breadthfirst">breadthfirst</option>
          <option value="circle">circle</option>
          <option value="grid">grid</option>
        </select>

        <label for="graph-projection">Projection</label>
        <select id="graph-projection">
          <option value="story" {% if default_projection == "story" %}selected{% endif %}>story</option>
          <option value="raw" {% if default_projection == "raw" %}selected{% endif %}>raw</option>
        </select>
      </div>

      <div class="graph-actions">
        <button id="graph-load" class="btn btn-primary" type="button">Load</button>
        <button id="graph-fit" class="btn btn-secondary" type="button">Fit View</button>
      </div>

      <div id="graph-status" class="graph-status">Ready.</div>
      <p class="graph-gesture-hint">
        Triple left-click a node for child-wave highlight.<br>
        Triple right-click a node for parent-wave highlight.
      </p>
    </section>

    <section class="graph-panel">
      <h3>Legend</h3>
      <div id="graph-legend" class="legend-items">
        <span class="text-muted">No nodes loaded.</span>
      </div>
    </section>

    <section class="graph-panel">
      <h3>Details</h3>
      <div id="graph-detail-content" class="text-sm text-muted">Select a node or edge.</div>
    </section>
  </aside>
</div>
{% endblock %}

{% block scripts %}
<script>
  window.AtlasGraphConfig = {{ graph_ui_config_json | safe }};
</script>
<script src="/static/js/graph_viewer.js" defer></script>
{% endblock %}