{% extends "network/base.html" %}
{% block title %}Global Network Canvas — Network Design Canvas{% endblock %}
{% block head %}
<link rel="stylesheet" href="{{ url_for('static', filename='js/vendor/joint.css') }}"/>
<script src="{{ url_for('static', filename='js/vendor/jquery.min.js') }}"></script>
<script src="{{ url_for('static', filename='js/vendor/lodash.min.js') }}"></script>
<script src="{{ url_for('static', filename='js/vendor/backbone.min.js') }}"></script>
<script src="{{ url_for('static', filename='js/vendor/joint.js') }}"></script>
<style>
  .main-content { padding: 0; display: flex; flex-direction: column; }
  #global-canvas-container { flex: 1; background: var(--bg); position: relative; overflow: hidden; }
  #global-canvas-toolbar {
    display: flex; gap: 8px; padding: 8px 16px;
    background: var(--bg2); border-bottom: 1px solid var(--border);
    align-items: center; font-size: 12px;
  }
  #global-canvas-toolbar .tb-btn {
    background: var(--bg3); border: 1px solid var(--border);
    color: var(--text); padding: 4px 10px; border-radius: 4px;
    cursor: pointer; font-size: 12px;
  }
  #global-canvas-toolbar .tb-btn:hover { border-color: var(--red); }
  .gc-legend { display: flex; gap: 12px; margin-left: auto; font-size: 11px; color: var(--text-dim); }
  .gc-legend-item { display: flex; align-items: center; gap: 4px; }
  .gc-dot { width: 10px; height: 10px; border-radius: 50%; }
</style>
{% endblock %}
{% block content %}
<div id="global-canvas-toolbar">
  <button class="tb-btn" onclick="gcZoomIn()">+ Zoom</button>
  <button class="tb-btn" onclick="gcZoomOut()">- Zoom</button>
  <button class="tb-btn" onclick="gcFit()">Fit All</button>
  <button class="tb-btn" onclick="gcReset()">1:1</button>
  <span style="margin-left:12px;color:var(--text-dim);" id="gc-stats">Loading...</span>
  <div class="gc-legend">
    <div class="gc-legend-item"><div class="gc-dot" style="background:#27ae60;"></div> Router</div>
    <div class="gc-legend-item"><div class="gc-dot" style="background:#3498db;"></div> Switch</div>
    <div class="gc-legend-item"><div class="gc-dot" style="background:#e74c3c;"></div> Firewall</div>
    <div class="gc-legend-item"><div class="gc-dot" style="background:#f39c12;"></div> Other</div>
  </div>
  <a href="/network/global" class="tb-btn" style="text-decoration:none;">Back to Global</a>
</div>
<div id="global-canvas-container"></div>
{% endblock %}
{% block scripts %}
<script>
const GC_COLORS = {
  'router': '#27ae60', 'switch-l3': '#3498db', 'switch-l2': '#3498db',
  'firewall': '#e74c3c', 'server': '#9b59b6', 'cloud': '#1abc9c',
};
const GC_DEFAULT = '#f39c12';

async function initGlobalCanvas() {
  const paper = new joint.dia.Paper({
    el: document.getElementById('global-canvas-container'),
    model: new joint.dia.Graph(),
    width: '100%', height: '100%',
    gridSize: 10, background: {color: '#1a1a2e'},
    interactive: false,
  });
  const graph = paper.model;
  window._gcPaper = paper;

  const r = await fetch(NC_BASE + '/api/global-canvas-data');
  const d = await r.json();

  document.getElementById('gc-stats').textContent =
    d.total_nodes + ' nodes, ' + d.total_edges + ' edges, ' + d.groups.length + ' topologies';

  // Render nodes
  const nodeMap = {};
  d.nodes.forEach(n => {
    const color = GC_COLORS[n.type] || GC_DEFAULT;
    const el = new joint.shapes.standard.Circle({
      position: {x: n.x || 0, y: n.y || 0},
      size: {width: 30, height: 30},
      attrs: {
        body: {fill: color, stroke: '#333', strokeWidth: 1},
        label: {text: (n.label || '').substring(0, 12), fill: '#eee', fontSize: 8},
      }
    });
    el.addTo(graph);
    nodeMap[n.id] = el;
  });

  // Render edges
  d.edges.forEach(e => {
    const src = nodeMap[e.source];
    const tgt = nodeMap[e.target];
    if (src && tgt) {
      const link = new joint.shapes.standard.Link({
        source: {id: src.id}, target: {id: tgt.id},
        attrs: {
          line: {
            stroke: e.is_interconnect ? '#e94560' : '#445',
            strokeWidth: e.is_interconnect ? 3 : 1,
            strokeDasharray: e.is_interconnect ? '8 4' : 'none',
          },
        },
        labels: e.label ? [{attrs: {text: {text: e.label, fill: '#888', fontSize: 7}}}] : [],
      });
      link.addTo(graph);
    }
  });

  // Fit to content
  paper.scaleContentToFit({padding: 40, maxScale: 1.5});
}

function gcZoomIn() { const s = window._gcPaper.scale(); window._gcPaper.scale(s.sx * 1.2, s.sy * 1.2); }
function gcZoomOut() { const s = window._gcPaper.scale(); window._gcPaper.scale(s.sx / 1.2, s.sy / 1.2); }
function gcFit() { window._gcPaper.scaleContentToFit({padding: 40, maxScale: 1.5}); }
function gcReset() { window._gcPaper.scale(1, 1); window._gcPaper.translate(0, 0); }

initGlobalCanvas();
</script>
{% endblock %}