{% extends "base.html" %}
{% block title %}Builder – {{ layout.name }}{% endblock %}

{% block content %}
<style>
  /* Make builder fill the full content area with no extra padding */
  #page-content { padding: 0 !important; overflow: hidden; }

  /* ── Builder shell ───────────────────────────────────────────────────────── */
  #lb-wrap {
    display: flex;
    height: calc(100vh);
    background: #0d1117;
    font-size: .85rem;
  }

  /* ── Left sidebar ────────────────────────────────────────────────────────── */
  #lb-sidebar {
    width: 230px;
    min-width: 230px;
    background: #161b22;
    border-right: 1px solid #30363d;
    display: flex;
    flex-direction: column;
    overflow: hidden;
  }
  #lb-sidebar-header {
    padding: .75rem 1rem;
    font-weight: 600;
    border-bottom: 1px solid #30363d;
    display: flex;
    align-items: center;
    gap: .5rem;
    white-space: nowrap;
    overflow: hidden;
  }
  #lb-sidebar-body {
    flex: 1;
    overflow-y: auto;
    padding: .5rem;
  }

  /* ── Tool palette ────────────────────────────────────────────────────────── */
  .lb-tool-btn {
    display: flex;
    align-items: center;
    gap: .5rem;
    width: 100%;
    padding: .45rem .7rem;
    border: 1px solid transparent;
    border-radius: .4rem;
    background: transparent;
    color: #8b949e;
    cursor: pointer;
    text-align: left;
    transition: background .15s, color .15s, border-color .15s;
    margin-bottom: 2px;
    font-size: .82rem;
  }
  .lb-tool-btn:hover { background: #1f2937; color: #e6edf3; }
  .lb-tool-btn.active {
    background: rgba(79,140,205,.15);
    border-color: #4f8ccd;
    color: #4f8ccd;
  }
  .lb-section-label {
    font-size: .7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: #484f58;
    padding: .4rem .3rem .2rem;
    margin-top: .25rem;
  }

  /* ── Device chips (draggable) ────────────────────────────────────────────── */
  .lb-board-group { margin-bottom: .5rem; }
  .lb-board-name {
    font-size: .72rem;
    font-weight: 600;
    color: #58a6ff;
    padding: .2rem .3rem;
    text-transform: uppercase;
    letter-spacing: .05em;
    display: flex;
    align-items: center;
    gap: .3rem;
  }
  .lb-device-chip {
    display: flex;
    align-items: center;
    gap: .45rem;
    padding: .35rem .6rem;
    margin-bottom: 3px;
    border-radius: .4rem;
    border: 1px solid #30363d;
    background: #1c2129;
    color: #c9d1d9;
    cursor: grab;
    user-select: none;
    font-size: .8rem;
    transition: border-color .15s, background .15s;
  }
  .lb-device-chip:hover { border-color: #58a6ff; background: #1f2937; }
  .lb-device-chip:active { cursor: grabbing; }
  .lb-device-chip .chip-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
  }

  /* ── Canvas area ─────────────────────────────────────────────────────────── */
  #lb-canvas-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
  }

  /* ── Toolbar ─────────────────────────────────────────────────────────────── */
  #lb-toolbar {
    background: #161b22;
    border-bottom: 1px solid #30363d;
    padding: .4rem .75rem;
    display: flex;
    align-items: center;
    gap: .5rem;
    flex-wrap: wrap;
  }
  #lb-toolbar .tb-sep { width: 1px; height: 24px; background: #30363d; margin: 0 .25rem; }
  #lb-toolbar .tb-label { font-size: .72rem; color: #484f58; font-weight: 600; text-transform: uppercase; }
  .tb-btn {
    padding: .25rem .55rem;
    border-radius: .35rem;
    border: 1px solid #30363d;
    background: #1c2129;
    color: #8b949e;
    cursor: pointer;
    font-size: .8rem;
    display: flex;
    align-items: center;
    gap: .3rem;
    transition: background .15s, color .15s, border-color .15s;
    white-space: nowrap;
  }
  .tb-btn:hover { background: #21262d; color: #e6edf3; }
  .tb-btn.active { background: rgba(79,140,205,.18); border-color: #4f8ccd; color: #4f8ccd; }
  .tb-btn.tb-mode { font-weight: 600; }
  #lb-save-status {
    font-size: .75rem;
    color: #484f58;
    margin-left: auto;
    white-space: nowrap;
  }
  #lb-save-status.saving { color: #f0883e; }
  #lb-save-status.saved  { color: #3fb950; }

  /* ── Konva stage container ───────────────────────────────────────────────── */
  #lb-stage { flex: 1; overflow: hidden; position: relative; }
  #konva-container { width: 100%; height: 100%; }
  #konva-container.drag-over { outline: 2px dashed #4f8ccd; outline-offset: -2px; }

  /* Ghost that follows cursor during drag-over canvas */
  #lb-drag-ghost {
    position: fixed;
    pointer-events: none;
    background: #1f2937;
    border: 1px solid #58a6ff;
    border-radius: .4rem;
    padding: .3rem .6rem;
    font-size: .8rem;
    color: #58a6ff;
    display: none;
    z-index: 9999;
  }
</style>

<div id="lb-wrap">

  <!-- ══ Sidebar ══════════════════════════════════════════════════════════════ -->
  <div id="lb-sidebar">
    <div id="lb-sidebar-header">
      <i class="bi bi-map text-info"></i>
      <span class="text-truncate" title="{{ layout.name }}">{{ layout.name }}</span>
    </div>
    <div id="lb-sidebar-body">

      <!-- ── Structure tools (shown in structure mode) ──────────────────── -->
      <div id="lb-structure-palette">
        <div class="lb-section-label">Draw tool</div>

        <button class="lb-tool-btn active" data-tool="select">
          <i class="bi bi-cursor"></i> Select / Move
        </button>
        <button class="lb-tool-btn" data-tool="pan">
          <i class="bi bi-arrows-move"></i> Pan
        </button>

        <div class="lb-section-label" style="margin-top:.5rem">Structure shapes</div>

        <button class="lb-tool-btn" data-tool="wall" style="border-left:3px solid #6e7681">
          <i class="bi bi-square-fill" style="color:#6e7681"></i> Wall
          <span class="ms-auto text-secondary" style="font-size:.7rem">drag</span>
        </button>
        <button class="lb-tool-btn" data-tool="room" style="border-left:3px solid #4f8ccd">
          <i class="bi bi-square" style="color:#4f8ccd"></i> Room
          <span class="ms-auto text-secondary" style="font-size:.7rem">drag</span>
        </button>
        <button class="lb-tool-btn" data-tool="door" style="border-left:3px solid #f0883e">
          <i class="bi bi-slash-circle" style="color:#f0883e"></i> Door
          <span class="ms-auto text-secondary" style="font-size:.7rem">drag</span>
        </button>
        <button class="lb-tool-btn" data-tool="window" style="border-left:3px solid #79c0ff">
          <i class="bi bi-grip-horizontal" style="color:#79c0ff"></i> Window
          <span class="ms-auto text-secondary" style="font-size:.7rem">drag</span>
        </button>
        <button class="lb-tool-btn" data-tool="fence" style="border-left:3px solid #8b5cf6">
          <i class="bi bi-border-all" style="color:#8b5cf6"></i> Fence
          <span class="ms-auto text-secondary" style="font-size:.7rem">drag</span>
        </button>
        <button class="lb-tool-btn" data-tool="text" style="border-left:3px solid #f0883e">
          <i class="bi bi-fonts" style="color:#f0883e"></i> Text label
          <span class="ms-auto text-secondary" style="font-size:.7rem">click</span>
        </button>

        <div class="lb-section-label" style="margin-top:.5rem">Canvas</div>
        <button class="lb-tool-btn" id="btn-clear-structure" onclick="LB.clearStructure()">
          <i class="bi bi-eraser text-danger"></i> Clear structure
        </button>
      </div>

      <!-- ── Device palette (shown in devices mode) ─────────────────────── -->
      <div id="lb-devices-palette" style="display:none">

        <!-- Selected device panel (visible when a device is clicked) -->
        <div id="lb-device-selected" style="display:none">
          <div class="lb-section-label">Selected</div>
          <div id="lb-sel-card" class="p-2 rounded mb-2" style="background:#1c2129;border:1px solid #4f8ccd">
            <div id="lb-sel-name" style="color:#c9d1d9;font-weight:600;font-size:.84rem"></div>
            <div id="lb-sel-board" class="text-secondary" style="font-size:.72rem"></div>
            <div id="lb-sel-type" style="font-size:.7rem;color:#f0883e;margin-top:.15rem"></div>
          </div>
          <div class="text-secondary mb-2" style="font-size:.75rem;padding:.1rem .3rem">
            <i class="bi bi-arrows-move me-1"></i>Drag to reposition
          </div>
          <button class="lb-tool-btn" onclick="LB.removeSelectedDevice()">
            <i class="bi bi-trash text-danger"></i> Remove from canvas
          </button>
          <button class="lb-tool-btn" onclick="LB.deselectDevice()">
            <i class="bi bi-x-circle" style="color:#8b949e"></i> Deselect
          </button>
          <hr style="border-color:#30363d;margin:.4rem 0">
        </div>

        <div class="lb-section-label" id="lb-drag-hint">Drag onto canvas</div>
        <div id="lb-device-list">
          <!-- populated by JS from LB_CONFIG.boards -->
        </div>
      </div>

      <!-- ── View mode info (shown in view mode) ─────────────────────────── -->
      <div id="lb-view-info" style="display:none; padding:.5rem; color:#8b949e; font-size:.8rem; line-height:1.5">
        <i class="bi bi-info-circle me-1"></i>
        <strong>Live view</strong><br>
        Click relay / switch devices to toggle them.<br>
        State updates in real-time via WebSocket.
      </div>

    </div><!-- sidebar-body -->
  </div><!-- sidebar -->

  <!-- ══ Canvas area ══════════════════════════════════════════════════════════ -->
  <div id="lb-canvas-area">

    <!-- Toolbar -->
    <div id="lb-toolbar">
      <span class="tb-label">Mode</span>
      <button class="tb-btn tb-mode active" data-mode="structure">
        <i class="bi bi-pencil-square"></i> Structure
      </button>
      <button class="tb-btn tb-mode" data-mode="devices">
        <i class="bi bi-grid-3x3-gap"></i> Devices
      </button>
      <button class="tb-btn tb-mode" data-mode="view">
        <i class="bi bi-eye"></i> Live View
      </button>

      <div class="tb-sep"></div>
      <span class="tb-label">Zoom</span>
      <button class="tb-btn" onclick="LB.zoom(1.2)"><i class="bi bi-zoom-in"></i></button>
      <button class="tb-btn" onclick="LB.zoom(1/1.2)"><i class="bi bi-zoom-out"></i></button>
      <button class="tb-btn" onclick="LB.resetView()"><i class="bi bi-fullscreen"></i></button>

      <div class="tb-sep"></div>
      <button class="tb-btn" onclick="LB.clearDevices()" id="btn-clear-devices" title="Remove all devices from canvas">
        <i class="bi bi-trash text-warning"></i> Clear devices
      </button>

      <div class="tb-sep"></div>
      <button class="tb-btn" onclick="LB.save()" id="btn-save">
        <i class="bi bi-floppy"></i> Save
      </button>

      <span id="lb-save-status">Unsaved</span>
    </div>

    <!-- Konva container -->
    <div id="lb-stage">
      <div id="konva-container"></div>
    </div>

  </div><!-- canvas-area -->
</div><!-- lb-wrap -->

<!-- Drag ghost tooltip -->
<div id="lb-drag-ghost"></div>

{% endblock %}

{% block scripts %}
<script src="{{ url_for('static', filename='vendor/konva/konva.min.js') }}"></script>
<script>
// ── Server-injected config ────────────────────────────────────────────────────
window.LB_CONFIG = {
  layoutId:   {{ layout.id }},
  saveUrl:    "{{ url_for('layouts.save_layout', layout_id=layout.id) }}",
  canvasJson: {{ (layout.canvas_json or 'null') | safe }},
  boards:     {{ boards_data | tojson | safe }},
  toggleBase: "/boards/{boardId}/relay/{relayNum}/toggle",
};
</script>
<script src="{{ url_for('static', filename='js/layout_builder.js') }}"></script>
{% endblock %}