zengzy / hhrcs_web · Files

MapEditor.vue 156 KB
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<template>
  <div class="map-editor-wrapper">
    <VaCard class="map-editor-card">
      <VaCardContent class="map-editor-content">
        <!-- 左侧配置面板 20% -->
        <div class="config-panel-wrapper">
          <div class="config-panel-inner">
            <!-- 顶部按钮组 -->
            <div class="panel-actions-top">
              <VaButton @click="saveMap" :disabled="isSaving" color="primary" size="small">{{ t('maps.editor.buttons.save') }}</VaButton>
              <VaButton @click="goBack" color="secondary" size="small">{{ t('maps.editor.buttons.back') }}</VaButton>
            </div>
            
            <h6 class="panel-title">{{ t('maps.editor.titles.elementConfig') }}</h6>
            
            <!-- 节点配置 -->
            <div v-if="selectedSingleNode" class="config-form">
              <VaInput :label="t('maps.editor.labels.code')" :model-value="selectedSingleNode.code" disabled readonly class="mb-3" />
              
              <VaSelect 
                :label="t('maps.editor.labels.type')" 
                v-model="selectedSingleNode.type" 
                :options="nodeTypeOptions"
                text-by="text"
                value-by="value"
                @update:model-value="syncToCurrentMap"
                class="mb-3"
              />
              
              <VaInput 
                :label="t('maps.editor.labels.coordinateX')" 
                v-model.number="selectedSingleNode.x" 
                type="number"
                @change="syncToCurrentMap"
                class="mb-3"
              />
              
              <VaInput 
                :label="t('maps.editor.labels.coordinateY')" 
                v-model.number="selectedSingleNode.y" 
                type="number"
                @change="syncToCurrentMap"
                class="mb-3"
              />
              
              <VaSelect 
                :label="t('maps.editor.labels.orientation')" 
                v-model.number="selectedSingleNode.orientation" 
                :options="orientationOptions"
                text-by="text"
                value-by="value"
                @update:model-value="syncToCurrentMap"
                class="mb-3"
              />
              
              <VaCheckbox 
                v-model="selectedSingleNode.allowRotate" 
                :label="t('maps.editor.labels.allowRotate')"
                @update:model-value="syncToCurrentMap"
                class="mb-2"
              />
              
              <VaCheckbox 
                v-model="selectedSingleNode.allowReverseEntry" 
                :label="t('maps.editor.labels.allowReverseEntry')"
                @update:model-value="syncToCurrentMap"
                class="mb-3"
              />
              
              <VaInput 
                :label="t('maps.editor.labels.maxCoordinateOffset')" 
                v-model.number="selectedSingleNode.maxCoordinateOffset" 
                type="number"
                :step="0.01"
                @change="syncToCurrentMap"
                class="mb-3"
              />
              
              <VaInput 
                :label="t('maps.editor.labels.maxAngleDeviation')" 
                v-model.number="selectedSingleNode.maxAngleDeviation" 
                type="number"
                :step="0.1"
                @change="syncToCurrentMap"
                class="mb-3"
              />
              
              <VaInput 
                :label="t('maps.editor.labels.maxSpeed')" 
                v-model.number="selectedSingleNode.maxSpeed" 
                type="number"
                :step="0.1"
                @change="syncToCurrentMap"
                class="mb-3"
              />
            </div>

            <!-- 连线配置 -->
            <div v-else-if="selectedSingleEdge" class="config-form">
              <VaInput :label="t('maps.editor.labels.code')" :model-value="selectedSingleEdge.code" disabled readonly class="mb-3" />
              
              <VaInput :label="t('maps.editor.labels.startNodeCode')" :model-value="selectedSingleEdge.sourceCode" disabled readonly class="mb-3" />
              
              <VaInput :label="t('maps.editor.labels.endNodeCode')" :model-value="selectedSingleEdge.targetCode" disabled readonly class="mb-3" />
              
              <VaCheckbox 
                v-model="selectedSingleEdge.isReverse" 
                :label="t('maps.editor.labels.isReverse')"
                @update:model-value="syncToCurrentMap"
                class="mb-2"
              />
              
              <VaCheckbox 
                :model-value="!!selectedSingleEdge.isArc" 
                :label="t('maps.editor.labels.isArc')"
                disabled
                class="mb-2"
              />
              
              <VaInput 
                :label="t('maps.editor.labels.centerX')" 
                :model-value="typeof selectedSingleEdge.centerX === 'number' ? selectedSingleEdge.centerX.toFixed(3) : ''" 
                disabled 
                readonly
                class="mb-3"
              />
              
              <VaInput 
                :label="t('maps.editor.labels.centerY')" 
                :model-value="typeof selectedSingleEdge.centerY === 'number' ? selectedSingleEdge.centerY.toFixed(3) : ''" 
                disabled 
                readonly
              />
            </div>

            <!-- 弧线配置 -->
            <div v-else-if="selectedSingleArc" class="config-form">
              <VaInput :label="t('maps.editor.labels.code')" :model-value="selectedSingleArc.code" disabled readonly class="mb-3" />
              
              <VaInput :label="t('maps.editor.labels.startNodeCode')" :model-value="getArcStartNodeId(selectedSingleArc)" disabled readonly class="mb-3" />
              
              <VaInput :label="t('maps.editor.labels.endNodeCode')" :model-value="getArcEndNodeId(selectedSingleArc)" disabled readonly class="mb-3" />
              
              <VaCheckbox 
                v-model="selectedSingleArc.isReverse" 
                :label="t('maps.editor.labels.isReverse')"
                @update:model-value="syncToCurrentMap"
                class="mb-2"
              />
              
              <VaCheckbox 
                :model-value="true" 
                :label="t('maps.editor.labels.isArc')"
                disabled
                class="mb-2"
              />
              
              <VaInput 
                :label="t('maps.editor.labels.centerX')" 
                :model-value="typeof selectedSingleArc.centerX === 'number' ? selectedSingleArc.centerX.toFixed(3) : ''" 
                disabled 
                readonly
                class="mb-3"
              />
              
              <VaInput 
                :label="t('maps.editor.labels.centerY')" 
                :model-value="typeof selectedSingleArc.centerY === 'number' ? selectedSingleArc.centerY.toFixed(3) : ''" 
                disabled 
                readonly
              />
            </div>

            <!-- 资源配置 -->
            <div v-else-if="selectedSingleResource" class="config-form">
              <VaInput :label="t('maps.editor.labels.code')" :model-value="selectedSingleResource.resourceCode" disabled readonly class="mb-3" />

              <VaInput
                :label="t('maps.editor.labels.name')"
                v-model="selectedSingleResource.resourceName"
                @change="syncResourcesToCurrentMap"
                class="mb-3"
              />

              <VaSelect
                :label="t('maps.editor.labels.type')"
                v-model="selectedSingleResource.type"
                :options="resourceTypeOptions"
                text-by="text"
                value-by="value"
                @update:model-value="syncResourcesToCurrentMap"
                class="mb-3"
              />

              <VaInput
                :label="t('maps.editor.labels.capacity')"
                v-model.number="selectedSingleResource.capacity"
                type="number"
                :min="1"
                @change="syncResourcesToCurrentMap"
                class="mb-3"
              />

              <VaInput
                :label="t('maps.editor.labels.maxSpeed')"
                v-model.number="selectedSingleResource.maxSpeed"
                type="number"
                :step="0.1"
                @change="syncResourcesToCurrentMap"
                class="mb-3"
              />

              <VaCheckbox
                v-model="selectedSingleResource.canRotate"
                :label="t('maps.editor.labels.canRotate')"
                @update:model-value="syncResourcesToCurrentMap"
                class="mb-3"
              />

              <VaSelect
                :label="t('maps.editor.labels.entryAction')"
                v-model="selectedSingleResource.entryAction"
                :options="resourceActionTypeOptions"
                text-by="text"
                value-by="value"
                @update:model-value="syncResourcesToCurrentMap"
                class="mb-3"
              />

              <VaSelect
                :label="t('maps.editor.labels.exitAction')"
                v-model="selectedSingleResource.exitAction"
                :options="resourceActionTypeOptions"
                text-by="text"
                value-by="value"
                @update:model-value="syncResourcesToCurrentMap"
                class="mb-3"
              />

              <div class="text-secondary small mb-2">{{ t('maps.editor.messages.resourcePointsCount', { count: selectedSingleResource.locationCoordinates?.length || 0 }) }}</div>
            </div>

            <!-- 未选中提示 -->
            <div v-else class="text-secondary">{{ t('maps.editor.messages.selectNodeOrEdge') }}</div>
          </div>
        </div>

        <!-- 右侧地图预览 80% -->
        <div class="preview-panel-wrapper">
          <div class="map-preview">
            <!-- 工具栏 -->
            <div class="toolbar-container">
              <VaButtonGroup v-if="currentMap.type === 1"  class="toolbar-group">
                <VaButton 
                  :color="mode === 'select' ? 'primary' : 'secondary'"
                  @click="setMode('select')"
                  icon="touch_app"
                  size="small"
                  :title="t('maps.editor.buttons.select')"
                />
                <VaButton 
                  :color="mode === 'pan' ? 'primary' : 'secondary'"
                  @click="setMode('pan')"
                  icon="pan_tool"
                  size="small"
                  :title="t('maps.editor.buttons.pan')"
                />
                <VaButton 
                  :color="mode === 'addNode' ? 'primary' : 'secondary'"
                  @click="setMode('addNode')"
                  icon="add_circle"
                  size="small"
                  :title="t('maps.editor.buttons.addNode')"
                />
                <VaButton 
                  :color="mode === 'connect' ? 'primary' : 'secondary'"
                  @click="setMode('connect')"
                  icon="link"
                  size="small"
                  :title="t('maps.editor.buttons.connect')"
                />
                <VaButton 
                  :color="mode === 'arc' ? 'primary' : 'secondary'"
                  @click="setMode('arc')"
                  icon="architecture"
                  size="small"
                  :title="t('maps.editor.buttons.arc')"
                />
                <VaButton 
                  color="secondary"
                  @click="openBatchArcPanel"
                  :disabled="selectedStraightEdgeCount < 2"
                  icon="compass_calibration"
                  size="small"
                  :title="t('maps.editor.buttons.batchArc')"
                />
                <VaButton 
                  color="secondary"
                  @click="generateFourVariantsForSelectedEdges"
                  :disabled="(selectedEdgeId == null && selectedEdgeIds.size === 0) && (selectedArcId == null && selectedArcIds.size === 0)"
                  icon="shuffle"
                  size="small"
                  :title="t('maps.editor.buttons.fourWayEdge')"
                />
                <VaButton 
                  color="secondary"
                  @click="generateEdgesForSelectedNodesX"
                  :disabled="!(selectedNodeIds.size >= 2)"
                  icon="swap_horiz"
                  size="small"
                  :title="t('maps.editor.buttons.xDirectionEdge')"
                />
                <VaButton 
                  color="secondary"
                  @click="generateEdgesForSelectedNodesY"
                  :disabled="!(selectedNodeIds.size >= 2)"
                  icon="swap_vert"
                  size="small"
                  :title="t('maps.editor.buttons.yDirectionEdge')"
                />
                <VaButton 
                  color="secondary"
                  @click="openBatchEditPanel"
                  :disabled="selectedNodeIds.size < 2"
                  icon="edit"
                  size="small"
                  :title="t('maps.editor.buttons.batchEdit')"
                />
                <VaButton 
                  color="secondary"
                  @click="openCopyPanel"
                  :disabled="(selectedNodeIds.size === 0 && selectedNodeId == null)"
                  icon="content_copy"
                  size="small"
                  :title="t('maps.editor.buttons.copy')"
                />
                <VaButton 
                  color="secondary"
                  @click="openMovePanel"
                  :disabled="(selectedNodeIds.size === 0 && selectedNodeId == null)"
                  icon="open_with"
                  size="small"
                  :title="t('maps.editor.buttons.move')"
                />
              </VaButtonGroup>

              <!-- 资源区域工具按钮组 -->
              <VaButtonGroup class="toolbar-group">
                <VaButton
                  v-for="resType in resourceTypeOptions"
                  :key="resType.value"
                  :color="mode === 'addResource' && currentResourceType === resType.value ? 'primary' : 'secondary'"
                  @click="setResourceMode(resType.value)"
                  :icon="getResourceIcon(resType.value)"
                  size="small"
                  :title="resType.text"
                />
                <VaButton
                  color="danger"
                  @click="deleteSelectedResource"
                  :disabled="selectedResourceId == null"
                  icon="delete"
                  size="small"
                  :title="t('maps.editor.buttons.deleteResource')"
                />
              </VaButtonGroup>

              <VaButtonGroup  class="toolbar-group">
                <VaButton
                  color="secondary"
                  @click="() => bgFileInputRef && bgFileInputRef.click()"
                  icon="add_photo_alternate"
                  size="small"
                  :title="t('maps.editor.buttons.importBgImage')"
                />
                <VaButton 
                  color="secondary"
                  @click="openBgSettingsModal"
                  icon="settings"
                  size="small"
                  :title="t('maps.editor.buttons.bgSettings')"
                />
                <VaButton 
                  color="secondary"
                  @click="clearBgImage"
                  :disabled="!bgImageUrl"
                  icon="delete"
                  size="small"
                  :title="t('maps.editor.buttons.clearBgImage')"
                />
                <input ref="bgFileInputRef" type="file" accept="image/*,.pgm" @change="onBgFileChange" style="display:none" />
              </VaButtonGroup>

              <VaButtonGroup class="toolbar-group">
                <VaButton 
                  color="secondary"
                  @click="undo"
                  :disabled="!canUndo"
                  icon="undo"
                  size="small"
                  :title="t('maps.editor.buttons.undo')"
                />
                <VaButton 
                  color="secondary"
                  @click="zoomIn"
                  icon="zoom_in"
                  size="small"
                  :title="t('maps.editor.buttons.zoomIn')"
                />
                <VaButton 
                  color="secondary"
                  @click="zoomOut"
                  icon="zoom_out"
                  size="small"
                  :title="t('maps.editor.buttons.zoomOut')"
                />
                <VaButton 
                  color="secondary"
                  @click="resetView"
                  icon="history"
                  size="small"
                  :title="t('maps.editor.buttons.resetView')"
                />
              </VaButtonGroup>

              <div class="stats-text">{{ t('maps.editor.stats.statsFormat', { nodes: nodes.length, edges: edges.length }) }}</div>
            </div>

                <div :class="['topo-canvas', canvasCursorClass, 'flex-grow-1']"
                     @mousedown="onCanvasMouseDown"
                     @mousemove="onCanvasMouseMove"
                     @mouseup="onCanvasMouseUp"
                     @mouseleave="onCanvasMouseUp"
                     @wheel.prevent="onCanvasWheel">
                  <svg :width="'100%'" :height="'100%'" ref="svgRef">
                    <defs>
                      <marker id="arrow-black" viewBox="0 0 10 10" refX="10" refY="5" markerUnits="strokeWidth" markerWidth="10" markerHeight="6" orient="auto">
                        <path d="M 0 0 L 10 5 L 0 10 z" fill="#000000" />
                      </marker>
                      <marker id="arrow-blue" viewBox="0 0 10 10" refX="10" refY="5" markerUnits="strokeWidth" markerWidth="10" markerHeight="6" orient="auto">
                        <path d="M 0 0 L 10 5 L 0 10 z" fill="#0d6efd" />
                      </marker>
                      <marker id="arrow-red" viewBox="0 0 10 10" refX="10" refY="5" markerUnits="strokeWidth" markerWidth="10" markerHeight="6" orient="auto">
                        <path d="M 0 0 L 10 5 L 0 10 z" fill="#dc3545" />
                      </marker>
                      <marker id="arrow-orange" viewBox="0 0 10 10" refX="10" refY="5" markerUnits="strokeWidth" markerWidth="10" markerHeight="6" orient="auto">
                        <path d="M 0 0 L 10 5 L 0 10 z" fill="#f59f00" />
                      </marker>
                    </defs>
                    

                    <!-- World space content (Cartesian: X right, Y up) -->
                    <g :transform="`translate(${viewport.x}, ${viewport.y}) scale(${viewport.scale})`">
                      <!-- background image (world space) -->
                      <g v-if="bgImageUrl">
                        <g :transform="`translate(${bgWorldWidth / 2 + bgOffsetX}, ${-bgWorldHeight / 2 - bgOffsetY}) rotate(${bgRotation}) translate(${-bgWorldWidth / 2}, ${bgWorldHeight / 2})`">
                          <image
                            :href="bgImageUrl"
                            :x="0"
                            :y="-bgWorldHeight"
                            :width="bgWorldWidth"
                            :height="bgWorldHeight"
                            :opacity="bgOpacity"
                            preserveAspectRatio="none"
                            crossorigin="anonymous"
                          />
                        </g>
                      </g>
                      <!-- grid -->
                      <g class="grid">
                        <g>
                          <line v-for="gx in gridXLines" :key="`gx-${gx.x}`"
                                :x1="gx.x" :y1="-worldBounds.yMin" :x2="gx.x" :y2="-worldBounds.yMax"
                                :stroke="gx.major ? '#e9ecef' : '#f1f3f5'" :stroke-width="(gx.major ? 0.1 : 0.05) / viewport.scale" />
                        </g>
                        <g>
                          <line v-for="gy in gridYLines" :key="`gy-${gy.y}`"
                                :x1="worldBounds.xMin" :y1="-gy.y" :x2="worldBounds.xMax" :y2="-gy.y"
                                :stroke="gy.major ? '#e9ecef' : '#f1f3f5'" :stroke-width="(gy.major ? 0.1 : 0.05) / viewport.scale" />
                        </g>
                        <!-- axes -->
                        <line :x1="0" :y1="-worldBounds.yMin" :x2="0" :y2="-worldBounds.yMax" stroke="#adb5bd" :stroke-width="0.2 / viewport.scale" />
                        <line :x1="worldBounds.xMin" y1="0" :x2="worldBounds.xMax" y2="0" stroke="#adb5bd" :stroke-width="0.2 / viewport.scale" />
                      </g>
                      <!-- resources (区域) -->
                      <g class="resources">
                        <g v-for="resource in resources" :key="resource.id">
                          <polygon
                            :points="getResourcePolygonPoints(resource)"
                            :fill="getResourceColor(resource.type, 0.3)"
                            :stroke="selectedResourceId === resource.id ? '#0d6efd' : getResourceColor(resource.type, 1)"
                            :stroke-width="(selectedResourceId === resource.id ? 2 : 1) / viewport.scale"
                            :stroke-dasharray="selectedResourceId === resource.id ? 'none' : `${0.5 / viewport.scale} ${0.25 / viewport.scale}`"
                            @mousedown.stop="onResourceMouseDown(resource, $event)"
                            @click.stop="onResourceClick(resource, $event)"
                            style="cursor: pointer"
                          />
                          <text
                            v-if="resource.locationCoordinates && resource.locationCoordinates.length > 0"
                            :x="getResourceCenter(resource).x"
                            :y="-getResourceCenter(resource).y"
                            :font-size="15 / viewport.scale"
                            fill="#333"
                            text-anchor="middle"
                            dominant-baseline="middle"
                          >{{ resource.resourceName || resource.resourceCode }}</text>   
                        </g>
                        <!-- 正在绘制的资源区域预览 -->
                        <g v-if="mode === 'addResource' && resourceDrawingPoints.length > 0">
                          <polygon
                            v-if="resourceDrawingPoints.length >= 3"
                            :points="resourceDrawingPoints.map(p => `${p.x},${-p.y}`).join(' ')"
                            :fill="getResourceColor(currentResourceType, 0.2)"
                            :stroke="getResourceColor(currentResourceType, 1)"
                            :stroke-width="0.15 / viewport.scale"
                            stroke-dasharray="0.3 0.15"
                          />
                          <polyline
                            v-else
                            :points="resourceDrawingPoints.map(p => `${p.x},${-p.y}`).join(' ')"
                            fill="none"
                            :stroke="getResourceColor(currentResourceType, 1)"
                            :stroke-width="0.15 / viewport.scale"
                            stroke-dasharray="0.3 0.15"
                          />
                          <circle
                            v-for="(pt, idx) in resourceDrawingPoints"
                            :key="idx"
                            :cx="pt.x"
                            :cy="-pt.y"
                            :r="2 / viewport.scale"
                            :fill="getResourceColor(currentResourceType, 1)"
                          />
                        </g>
                      </g>
                      <!-- edges -->
                      <g class="edges">
                        <g v-for="edge in edges.filter(e => !e.curve)" :key="edge.id">
                          <path
                            :d="getEdgePath(edge)"
                            fill="none"
                            :stroke="getEdgeStroke(edge)"
                            :stroke-width="(mode === 'arc' && arcMode.step === 1 && (arcMode.firstEdgeId === edge.id || arcHoverEdgeId === edge.id)) ? 8 : (isEdgeSelected(edge.id) ? 8 : 6)"
                            :stroke-dasharray="(mode === 'arc' && arcMode.step === 1 && (arcMode.firstEdgeId === edge.id || arcHoverEdgeId === edge.id)) ? '8 6' : null"
                            :marker-mid="getEdgeMarker(edge)"
                          />
                          <path
                            :d="getEdgePath(edge)"
                            fill="none"
                            stroke="transparent"
                            :stroke-width="16"
                            pointer-events="stroke"
                            @click.stop="onEdgeClick(edge, $event)"
                          />
                        </g>
                      </g>
                      <!-- arcs -->
                      <g class="arcs">
                        <g v-for="arc in edges.filter(e => e.curve)" :key="arc.id">
                          <path
                            :d="getArcPath(arc)"
                            fill="none"
                            :stroke="getArcStroke(arc)"
                            :stroke-width="isArcSelected(arc.id) ? 8 : 6"
                            :marker-mid="getArcMarker(arc)"
                          />
                          <!-- clickable overlay to improve hit area -->
                          <path
                            :d="getArcPath(arc)"
                            fill="none"
                            stroke="transparent"
                            :stroke-width="16"
                            pointer-events="stroke"
                            @click.stop="onArcClick($event)"
                          />
                        </g>
                      </g>
                      <!-- nodes -->
                      <g class="nodes">
                        <g v-for="node in nodes" :key="node.id"
                           class="node"
                           :transform="`translate(${node.x}, ${-node.y})`"
                           @mousedown.stop="onNodeMouseDown($event, node)"
                           @click.stop="onNodeClick($event, node)">
                          <!-- 储位类型：1000x1000橙黄色方框 -->
                          <g v-if="node.type === 2" pointer-events="none">
                            <rect
                              x="-500" y="-500"
                              width="1000" height="1000"
                              rx="50" ry="50"
                              :fill="isNodeSelected(node.id) ? '#7bbfea' : '#fcf16e'"
                              :stroke="isNodeSelected(node.id) ? '#0d6efd' : '#fdb933'"
                              stroke-width="50"
                              pointer-events="auto"
                            />
                            <!-- 库位状态图标：禁用=红叉，占用=绿色托盘，预占用=灰色托盘 -->
                            <text v-if="getStorageStatus(node) === 3"
                                  x="0" y="0"
                                  text-anchor="middle"
                                  dominant-baseline="central"
                                  font-size="600"
                                  fill="#dc3545"
                                  pointer-events="none">✕</text>
                            <text v-else-if="getStorageStatus(node) === 1"
                                  x="0" y="0"
                                  text-anchor="middle"
                                  dominant-baseline="central"
                                  font-size="500"
                                  fill="#28a745"
                                  pointer-events="none">▣</text>
                            <text v-else-if="getStorageStatus(node) === 2"
                                  x="0" y="0"
                                  text-anchor="middle"
                                  dominant-baseline="central"
                                  font-size="500"
                                  fill="#6c757d"
                                  pointer-events="none">▣</text>
                            <text v-else
                              x="0" y="0"
                              text-anchor="middle"
                              alignment-baseline="central"
                              dominant-baseline="central"
                              font-size="200"
                              :fill="isNodeSelected(node.id) ? '#0d6efd' : '#d68910'"
                              pointer-events="none">{{ node.name || node.code }}</text>
                          </g>
                          <!-- 非储位类型：圆形 -->
                          <circle v-else :r="NODE_RADIUS"
                                  :fill="isNodeSelected(node.id) ? '#0d6efd' : getNodeFill(node)"
                                  :stroke="isNodeSelected(node.id) ? '#0d6efd' : getNodeStroke(node)"
                                  :stroke-width="getNodeStrokeWidth(node)" />
                          <text v-if="!isNodeSelected(node.id) && node.type === 3"
                                x="0" y="0"
                                text-anchor="middle"
                                alignment-baseline="central"
                                dominant-baseline="central"
                                :font-size="NODE_RADIUS * 1.4"
                                fill="#28a745"
                                pointer-events="none">⚡</text>
                          <text v-if="!isNodeSelected(node.id) && node.type === 4"
                                x="0" y="0"
                                text-anchor="middle"
                                alignment-baseline="central"
                                dominant-baseline="central"
                                :font-size="NODE_RADIUS * 1.4"
                                fill="#ffffff"
                                pointer-events="none">P</text>
                          <text v-if="!isNodeSelected(node.id) && node.type === 1"
                                x="0" y="0"
                                text-anchor="middle"
                                alignment-baseline="central"
                                dominant-baseline="central"
                                :font-size="NODE_RADIUS * 1.2"
                                fill="#ff6b6b"
                                pointer-events="none"></text>
                        </g>
                      </g>
                  <!-- snap guides -->
                  <g v-if="snapGuideX != null || snapGuideY != null" class="snap-guides">
                    <line v-if="snapGuideX != null"
                          :x1="snapGuideX"
                          :y1="-worldBounds.yMin"
                          :x2="snapGuideX"
                          :y2="-worldBounds.yMax"
                          class="snap-guide-line" />
                    <line v-if="snapGuideY != null"
                          :x1="worldBounds.xMin"
                          :y1="-snapGuideY"
                          :x2="worldBounds.xMax"
                          :y2="-snapGuideY"
                          class="snap-guide-line" />
                  </g>
                    </g>
                    <!-- marquee selection (screen space) -->
                    <!-- Rulers (screen space, rendered on top) -->
                    <g class="ruler-top" style="pointer-events: none;">
                      <rect x="0" y="0" :width="canvasSize.width" height="16" fill="#f8f9fa" />
                      <g>
                        <g v-for="t in topRulerTicks" :key="`rtx-${t.x}`">
                          <line :x1="t.x" y1="0" :x2="t.x" :y2="t.major ? 12 : 8" stroke="#adb5bd" stroke-width="1" />
                          <text v-if="t.major" :x="t.x + 2" y="14" font-size="10" fill="#868e96">{{ t.label }}</text>
                        </g>
                      </g>
                    </g>
                    <g class="ruler-left" style="pointer-events: none;">
                      <rect x="0" y="0" width="32" :height="canvasSize.height" fill="#f8f9fa" />
                      <g>
                        <g v-for="t in leftRulerTicks" :key="`rty-${t.y}`">
                          <line x1="0" :y1="t.y" :x2="t.major ? 20 : 12" :y2="t.y" stroke="#adb5bd" stroke-width="1" />
                          <text v-if="t.major" x="22" :y="t.y - 2" font-size="10" fill="#868e96">{{ t.label }}</text>
                        </g>
                      </g>
                    </g>
                    
                    
                    <g v-if="isMarqueeSelecting">
                      <rect :x="marqueeRect.x"
                            :y="marqueeRect.y"
                            :width="marqueeRect.width"
                            :height="marqueeRect.height"
                            class="marquee-rect" />
                    </g>
                  </svg>
                  <!-- 鼠标提示：选择第一条边（屏幕坐标系） -->
                  <div
                    v-if="mode === 'arc' && arcMode.step === 0"
                    class="mouse-hint"
                    :style="{ left: mousePos.x + 12 + 'px', top: mousePos.y + 12 + 'px' }"
                  >
                    {{ t('maps.editor.messages.selectFirstEdge') }}
                  </div>
                  <div
                    v-if="pickCycleInfo && pickCycleInfo.visible"
                    class="mouse-hint"
                    :style="{ left: mousePos.x + 12 + 'px', top: mousePos.y + 12 + 'px' }"
                  >
                    {{ t('maps.editor.messages.candidate') }} {{ pickCycleInfo.index + 1 }}/{{ pickCycleInfo.total }}
                  </div>
              <!-- 圆弧半径面板 -->
              <VaCard v-if="showArcRadiusPanel" class="floating-panel floating-panel-enhanced" @mousedown.stop @click.stop>
                <VaCardTitle class="panel-title-enhanced">
                  <VaIcon name="architecture" class="panel-icon" />
                  {{ t('maps.editor.titles.setArcRadius') }}
                </VaCardTitle>
                <VaCardContent class="panel-content-enhanced">
                  <VaChip color="info" size="small" class="mb-3">
                    {{ t('maps.editor.messages.maxRadius', { radius: arcMaxRadius.toFixed(3) }) }}
                  </VaChip>
                  <VaInput 
                    v-model.number="arcRadiusInput" 
                    :label="t('maps.editor.labels.arcRadius')"
                    type="number"
                    :min="0.0001"
                    :step="0.001"
                    class="mb-4"
                  >
                    <template #prepend>
                      <VaIcon name="straighten" size="small" />
                    </template>
                  </VaInput>
                  <div class="d-flex justify-content-end gap-2">
                    <VaButton @click="cancelArcRadiusPanel" preset="secondary" size="small" icon="close">{{ t('maps.editor.buttons.cancel') }}</VaButton>
                    <VaButton @click="confirmArcRadius" size="small" icon="check">{{ t('maps.editor.buttons.confirm') }}</VaButton>
                  </div>
                </VaCardContent>
              </VaCard>

              <!-- 批量圆弧面板 -->
              <VaCard v-if="batchArcPanelVisible" class="floating-panel floating-panel-enhanced" @mousedown.stop @click.stop>
                <VaCardTitle class="panel-title-enhanced">
                  <VaIcon name="compass_calibration" class="panel-icon" />
                  {{ t('maps.editor.titles.batchGenerateArc') }}
                </VaCardTitle>
                <VaCardContent class="panel-content-enhanced">
                  <VaChip color="success" size="small" class="mb-3">
                    <VaIcon name="done_all" size="small" />
                    {{ t('maps.editor.messages.selectedLines', { count: selectedStraightEdgeCount }) }}
                  </VaChip>
                  <VaInput 
                    v-model.number="batchArcRadiusInput" 
                    :label="t('maps.editor.labels.arcRadius')"
                    type="number"
                    :min="0.0001"
                    :step="0.001"
                    class="mb-4"
                  >
                    <template #prepend>
                      <VaIcon name="straighten" size="small" />
                    </template>
                  </VaInput>
                  <div class="d-flex justify-content-end gap-2">
                    <VaButton @click="cancelBatchArcPanel" preset="secondary" size="small" icon="close">{{ t('maps.editor.buttons.cancel') }}</VaButton>
                    <VaButton @click="confirmBatchArcRadius" size="small" icon="auto_awesome">{{ t('maps.editor.buttons.generate') }}</VaButton>
                  </div>
                </VaCardContent>
              </VaCard>

              <!-- 批量编辑面板 -->
              <VaCard v-if="batchEditPanelVisible" class="floating-panel floating-panel-enhanced" @mousedown.stop @click.stop>
                <VaCardTitle class="panel-title-enhanced">
                  <VaIcon name="edit" class="panel-icon" />
                  {{ t('maps.editor.titles.batchEditNodes') }}
                </VaCardTitle>
                <VaCardContent class="panel-content-enhanced">
                  <VaChip color="primary" size="small" class="mb-3">
                    <VaIcon name="check_circle" size="small" />
                    {{ t('maps.editor.messages.selectedNodes', { count: selectedNodeIds.size }) }}
                  </VaChip>
                  <VaSelect 
                    v-model="batchNodeTypeChoice" 
                    :label="t('maps.editor.labels.nodeType')"
                    :options="batchNodeTypeOptions"
                    text-by="text"
                    value-by="value"
                    class="mb-3"
                  >
                    <template #prepend>
                      <VaIcon name="category" size="small" />
                    </template>
                  </VaSelect>
                  <VaSelect 
                    v-model="batchNodeOrientationChoice" 
                    :label="t('maps.editor.labels.nodeOrientation')"
                    :options="batchNodeOrientationOptions"
                    text-by="text"
                    value-by="value"
                    class="mb-3"
                  >
                    <template #prepend>
                      <VaIcon name="explore" size="small" />
                    </template>
                  </VaSelect>
                  <VaSelect 
                    v-model="batchNodeAllowRotateChoice" 
                    :label="t('maps.editor.labels.allowRotateLabel')"
                    :options="batchRotateOptions"
                    text-by="text"
                    value-by="value"
                    class="mb-3"
                  >
                    <template #prepend>
                      <VaIcon name="360" size="small" />
                    </template>
                  </VaSelect>
                  <VaSelect 
                    v-model="batchNodeAllowReverseEntryChoice" 
                    :label="t('maps.editor.labels.reverseEntryLabel')"
                    :options="batchBooleanOptions"
                    text-by="text"
                    value-by="value"
                    class="mb-4"
                  >
                    <template #prepend>
                      <VaIcon name="u_turn_left" size="small" />
                    </template>
                  </VaSelect>
                  <div class="d-flex justify-content-end gap-2">
                    <VaButton @click="cancelBatchEditPanel" preset="secondary" size="small" icon="close">{{ t('maps.editor.buttons.cancel') }}</VaButton>
                    <VaButton @click="confirmBatchEdit" size="small" icon="check">{{ t('maps.editor.buttons.apply') }}</VaButton>
                  </div>
                </VaCardContent>
              </VaCard>

              <!-- 复制面板 -->
              <VaCard v-if="copyPanelVisible" class="floating-panel floating-panel-enhanced" @mousedown.stop @click.stop>
                <VaCardTitle class="panel-title-enhanced">
                  <VaIcon name="content_copy" class="panel-icon" />
                  {{ t('maps.editor.titles.copyAndMove') }}
                </VaCardTitle>
                <VaCardContent class="panel-content-enhanced">
                  <VaChip color="warning" size="small" class="mb-3">
                    <VaIcon name="check_circle" size="small" />
                    {{ t('maps.editor.messages.selectedNodes', { count: selectedNodeIds.size }) }}
                  </VaChip>
                  <VaInput 
                    v-model.number="copyOffsetX" 
                    :label="t('maps.editor.labels.xOffset')"
                    type="number"
                    :step="1"
                    class="mb-3"
                  >
                    <template #prepend>
                      <VaIcon name="swap_horiz" size="small" />
                    </template>
                  </VaInput>
                  <VaInput 
                    v-model.number="copyOffsetY" 
                    :label="t('maps.editor.labels.yOffset')"
                    type="number"
                    :step="1"
                    class="mb-4"
                  >
                    <template #prepend>
                      <VaIcon name="swap_vert" size="small" />
                    </template>
                  </VaInput>
                  <div class="d-flex justify-content-end gap-2">
                    <VaButton @click="cancelCopyPanel" preset="secondary" size="small" icon="close">{{ t('maps.editor.buttons.cancel') }}</VaButton>
                    <VaButton 
                      @click="confirmCopy" 
                      size="small"
                      icon="content_copy"
                      :disabled="(Number(copyOffsetX) || 0) === 0 && (Number(copyOffsetY) || 0) === 0"
                    >
                      {{ t('maps.editor.buttons.copy') }}
                    </VaButton>
                  </div>
                </VaCardContent>
              </VaCard>

              <!-- 平移面板 -->
              <VaCard v-if="movePanelVisible" class="floating-panel floating-panel-enhanced" @mousedown.stop @click.stop>
                <VaCardTitle class="panel-title-enhanced">
                  <VaIcon name="open_with" class="panel-icon" />
                  {{ t('maps.editor.titles.moveSelectedElements') }}
                </VaCardTitle>
                <VaCardContent class="panel-content-enhanced">
                  <VaChip color="primary" size="small" class="mb-3">
                    <VaIcon name="check_circle" size="small" />
                    {{ t('maps.editor.messages.selectedNodes', { count: selectedNodeIds.size }) }}
                  </VaChip>
                  <VaInput 
                    v-model.number="moveOffsetX" 
                    :label="t('maps.editor.labels.xOffset')"
                    type="number"
                    :step="1"
                    class="mb-3"
                  >
                    <template #prepend>
                      <VaIcon name="swap_horiz" size="small" />
                    </template>
                  </VaInput>
                  <VaInput 
                    v-model.number="moveOffsetY" 
                    :label="t('maps.editor.labels.yOffset')"
                    type="number"
                    :step="1"
                    class="mb-4"
                  >
                    <template #prepend>
                      <VaIcon name="swap_vert" size="small" />
                    </template>
                  </VaInput>
                  <div class="d-flex justify-content-end gap-2">
                    <VaButton @click="cancelMovePanel" preset="secondary" size="small" icon="close">{{ t('maps.editor.buttons.cancel') }}</VaButton>
                    <VaButton 
                      @click="confirmMove" 
                      size="small"
                      icon="open_with"
                      :disabled="(Number(moveOffsetX) || 0) === 0 && (Number(moveOffsetY) || 0) === 0"
                    >
                      {{ t('maps.editor.buttons.move') }}
                    </VaButton>
                  </div>
                </VaCardContent>
              </VaCard>
            </div>
          </div>
        </div>
      </VaCardContent>
    </VaCard>

    <!-- 背景图设置弹窗 -->
    <VaModal
      v-model="bgSettingsModalVisible"
      :title="t('maps.editor.titles.bgSettings')"
      size="small"
      :close-button="true"
      :ok-text="t('maps.editor.buttons.confirm')"
      :cancel-text="t('maps.editor.buttons.cancel')"
      @ok="saveBgSettings"
    >
      <div class="bg-settings-content">
        <VaInput
          v-model.number="bgScale"
          :label="t('maps.editor.labels.scale')"
          type="number"
          :min="0.01"
          :step="0.1"
          class="mb-3"
        />
        <VaInput
          v-model.number="bgOpacity"
          :label="t('maps.editor.labels.opacity')"
          type="number"
          :min="0"
          :max="1"
          :step="0.05"
          class="mb-3"
        />
        <VaInput
          v-model.number="bgRotation"
          :label="t('maps.editor.labels.rotation')"
          type="number"
          :min="-180"
          :max="180"
          :step="1"
          class="mb-3"
        />
        <VaInput
          v-model.number="bgOffsetX"
          :label="t('maps.editor.labels.offsetX')"
          type="number"
          :step="0.01"
          class="mb-3"
        />
        <VaInput
          v-model.number="bgOffsetY"
          :label="t('maps.editor.labels.offsetY')"
          type="number"
          :step="0.01"
          class="mb-3"
        />
        <div class="text-secondary small mb-3">
          {{ t('maps.editor.messages.rotationHint') }}
        </div>
      </div>
    </VaModal>

    <!-- 确认返回弹窗 -->
    <VaModal
      v-model="confirmBackModalVisible"
      :title="t('maps.editor.titles.confirmBack')"
      size="small"
      :close-button="true"
      :ok-text="t('maps.editor.buttons.confirm')"
      :cancel-text="t('maps.editor.buttons.cancel')"
      @ok="confirmBack"
    >
      <div class="text-secondary mb-3">
        {{ t('maps.editor.messages.unsavedChanges') }}
      </div>
    </VaModal>

    <!-- 保存中加载弹窗 -->
    <VaModal
      v-model="isSaving"
      :title="t('maps.editor.titles.saving')"
      size="small"
      :close-button="false"
      :hide-default-actions="true"
      no-outside-dismiss
    >
      <div class="loading-content">
        <VaProgressCircle indeterminate />
        <div class="loading-text">{{ t('maps.editor.messages.savingData') }}</div>
      </div>
    </VaModal>
  </div>
</template>

<script setup>
import { ref, onMounted, onUnmounted, computed, watch, getCurrentInstance, nextTick } from 'vue'
import { useRoute, useRouter } from 'vue-router'
import { useI18n } from 'vue-i18n'
import mapsApi from '../../services/maps'
import { useToast } from 'vuestic-ui'
import { useOptions } from '../../composables/useOptions'

const route = useRoute()
const router = useRouter()
const { t } = useI18n()
const { loadOptions, getMapNodeTypeOptions, getMapResourceTypeOptions } = useOptions()

const nodeTypeOptions = computed(() => getMapNodeTypeOptions())
const resourceTypeOptions = computed(() => getMapResourceTypeOptions())

// 资源动作类型选项
const resourceActionTypeOptions = computed(() => [
  { text: t('maps.editor.resourceActions.none'), value: 0 },
  { text: t('maps.editor.resourceActions.actionList'), value: 1 },
  { text: t('maps.editor.resourceActions.networkRequest'), value: 2 },
])

const orientationOptions = computed(() => [
  { text: t('maps.editor.orientations.none'), value: null },
  { text: t('maps.editor.orientations.deg0'), value: 0 },
  { text: t('maps.editor.orientations.deg90'), value: 90 },
  { text: t('maps.editor.orientations.deg180'), value: 180 },
  { text: t('maps.editor.orientations.deg270'), value: 270 },
])

const batchNodeTypeOptions = computed(() => [
  { text: t('maps.editor.booleanOptions.noChange') + t('maps.editor.labels.type'), value: 'NO_CHANGE' },
  ...nodeTypeOptions.value
])

const batchNodeOrientationOptions = computed(() => [
  { text: t('maps.editor.booleanOptions.noChange') + t('maps.editor.labels.orientation'), value: 'NO_CHANGE' },
  { text: t('maps.editor.orientations.none'), value: 'NULL' },
  { text: t('maps.editor.orientations.deg0'), value: '0' },
  { text: t('maps.editor.orientations.deg90'), value: '90' },
  { text: t('maps.editor.orientations.deg180'), value: '180' },
  { text: t('maps.editor.orientations.deg270'), value: '270' },
])

const batchBooleanOptions = computed(() => [
  { text: t('maps.editor.booleanOptions.noChange'), value: 'NO_CHANGE' },
  { text: t('maps.editor.booleanOptions.yes'), value: 'TRUE' },
  { text: t('maps.editor.booleanOptions.no'), value: 'FALSE' },
])

const batchRotateOptions = computed(() => [
  { text: t('maps.editor.booleanOptions.noChange'), value: 'NO_CHANGE' },
  { text: t('maps.editor.booleanOptions.allow'), value: 'TRUE' },
  { text: t('maps.editor.booleanOptions.notAllow'), value: 'FALSE' },
])

// 响应式数据
const isEditMode = ref(false)
const currentMap = ref({
  id: null,
  name: '',
  code: '',
  type: 1,
  description: '',
  // 拓扑数据
  nodes: [],
  edges: [],
  resources: []
})

// ======== 表单验证（名称/编码/类型） ========
const editorErrors = ref({ name: '', code: '', type: '' })
const editorTouched = ref({ name: false, code: false, type: false })
const NAME_MAX = 50
const CODE_PATTERN = /^[A-Z]{2}$/

const validateEditorField = (field) => {
  const v = currentMap.value
  switch (field) {
    case 'name':
      editorErrors.value.name = !v.name
        ? t('maps.editor.validation.nameRequired')
        : v.name.length > NAME_MAX
        ? t('maps.editor.validation.nameTooLong', { max: NAME_MAX })
        : ''
      break
    case 'code':
      editorErrors.value.code = !v.code
        ? t('maps.editor.validation.codeRequired')
        : !CODE_PATTERN.test(v.code)
        ? t('maps.editor.validation.codeInvalid')
        : ''
      break
    case 'type':
      editorErrors.value.type = !v.type ? t('maps.editor.validation.typeRequired') : ''
      break
    default:
      break
  }
}
const { proxy } = getCurrentInstance()
const validateEditorAll = () => {
  ;['name', 'code', 'type'].forEach(validateEditorField)
  return Object.values(editorErrors.value).every(x => !x)
}

const isEditorFormValid = computed(() => {
  const v = currentMap.value
  return !!(v.name && v.code && v.type && Object.values(editorErrors.value).every(x => !x))
})

const markTouchedEditor = (field) => {
  if (field in editorTouched.value) editorTouched.value[field] = true
}

const onEditorInput = (field) => {
  if (editorTouched.value[field]) validateEditorField(field)
}

const onCodeInputEditor = (e) => {
  const raw = (e?.target?.value ?? '').toString().toUpperCase().replace(/[^A-Z]/g, '')
  currentMap.value.code = raw.slice(0, 2)
  validateEditorField('code')
}

// 统一生成边的业务编码：倒车则追加 "-P"
const formatEdgeCode = (sourceCode, targetCode, isReverse) => {
  if (!sourceCode || !targetCode) return ''
  return `${sourceCode}-${targetCode}${isReverse ? '-P' : ''}`
}

// 方法
const onMapTypeChange = () => {}
const { init: notify } = useToast()
const isSaving = ref(false)
const saveMap = async () => {
  if (isSaving.value) return
  try {
    isSaving.value = true
    // 确保拓扑数据已同步，并转换为保存格式
    const nodesToSave = nodes.value.map(node => ({
      nodeId: String(node.id),
      nodeCode: node.code,
      nodeName: node.name || '',
      x: node.x,
      y: node.y,
      theta: node.orientation,
      allowRotate: node.allowRotate || false,
      type: node.type,
      isReverseParking: node.allowReverseEntry || false,
      maxCoordinateOffset: node.maxCoordinateOffset,
      maxAngleDeviation: node.maxAngleDeviation,
      maxSpeed: node.maxSpeed,
      active: true
    }))
    
    const edgesToSave = edges.value.map(edge => ({
      edgeId: String(edge.id),
      fromNode: edge.sourceCode,
      toNode: edge.targetCode,
      edgeCode: formatEdgeCode(edge.sourceCode, edge.targetCode, !!edge.isReverse),
      edgeName: edge.name || '',
      regress: edge.isReverse || false,
      isCurve: edge.curve || false,
      radius: edge.radius,
      centerX: edge.centerX,
      centerY: edge.centerY,
      active: true
    }))

    const resourcesToSave = resources.value.map(resource => ({
      resourceId: String(resource.id),
      resourceCode: resource.resourceCode,
      resourceName: resource.resourceName || '',
      type: resource.type,
      capacity: resource.capacity || 999,
      maxSpeed: resource.maxSpeed || 2,
      canRotate: resource.canRotate !== false,
      entryAction: resource.entryAction || 0,
      exitAction: resource.exitAction || 0,
      locationCoordinates: resource.locationCoordinates || [],
      active: resource.active !== false
    }))

    const payload = {
      mapId: currentMap.value.id ? String(currentMap.value.id) : undefined,
      mapCode: currentMap.value.code,
      mapName: currentMap.value.name,
      mapType: currentMap.value.type,
      version: currentMap.value.version,
      description: currentMap.value.description,
      active: true,
      mapNodes: nodesToSave,
      mapEdges: edgesToSave,
      mapResources: resourcesToSave
    }
    
    console.log(payload)
    const res = await mapsApi.Canvas(payload)
    if(res.success) {
      notify({ message: t('maps.editor.messages.saveSuccess'), color: 'success' })
    }
    else{
      notify({ message: (t('maps.editor.messages.saveFailed') + ': ' + res.message), color: 'failed' })
    }
  } catch (error) {
    notify({ message: t('maps.editor.messages.saveFailed', { error: error?.message || '' }), color: 'danger' })
  } finally {
    isSaving.value = false
  }
}

const previewMap = () => {
  var jsonStr = JSON.stringify(currentMap.value);
  console.log(jsonStr);
  // 打开预览窗口或模态框
  notify({ message: t('maps.editor.messages.previewDeveloping'), color: 'info' })
}

const confirmBackModalVisible = ref(false)

const goBack = () => {
  confirmBackModalVisible.value = true
}

const confirmBack = () => {
  confirmBackModalVisible.value = false
  router.push({ name: 'maps' })
}

const loadMapData = async (mapId) => {
  try {
    const res = await mapsApi.getDetails(String(mapId))
    const data = (res && (res.Data ?? res.data)) || res || {}

    currentMap.value.id = String(data.mapId ?? data.id ?? mapId);
    currentMap.value.name = data.mapName ?? data.name ?? '';
    currentMap.value.code = data.mapCode ?? data.code ?? '';
    currentMap.value.type = data.mapType ?? data.type ?? 1;
    currentMap.value.description = data.description ?? '';
    
    // 处理节点数据：转换后端字段到前端字段
    const nodes = data.mapNodes ?? data.nodes ?? []
    console.log('[loadMapData] 原始节点数据:', nodes)
    const nodeIdToCodeMap = new Map()
    currentMap.value.nodes = nodes.map(node => {
      const nodeId = String(node.nodeId ?? node.id)
      const nodeCode = node.nodeCode ?? node.code ?? node.label ?? `N${node.nodeId ?? node.id}`
      nodeIdToCodeMap.set(nodeId, nodeCode)
      return {
        id: nodeId,
        x: node.x,
        y: node.y,
        code: nodeCode,
        name: node.nodeName ?? node.name ?? '',
        orientation: node.theta ?? node.orientation,
        allowRotate: node.allowRotate ?? false,
        type: node.type,
        allowReverseEntry: node.isReverseParking ?? node.allowReverseEntry ?? false,
        maxCoordinateOffset: node.maxCoordinateOffset ?? 0.5,
        maxAngleDeviation: node.maxAngleDeviation ?? 15,
        maxSpeed: node.maxSpeed ?? 1.2,
        storageLocations: node.storageLocations ?? []
      }
    })
    console.log(12313)
    // 打印储位节点的库位数据
    const storeNodes = currentMap.value.nodes.filter(n => n.type === 2)
    console.log('[loadMapData] 储位节点数量:', storeNodes.length)
    storeNodes.forEach(n => console.log('[loadMapData] 储位节点:', n.code, 'storageLocations:', n.storageLocations))
    console.log('[loadMapData] 转换后节点数据:', currentMap.value.nodes)

    // 处理边数据：转换后端字段到前端字段
    const edges = data.mapEdges ?? data.edges ?? []
    currentMap.value.edges = edges.map(edge => {
      // fromNode/toNode 是 nodeId（UUID），需要通过映射转换为 nodeCode
      const sourceCode = edge.fromNode ? (nodeIdToCodeMap.get(String(edge.fromNode)) ?? edge.sourceCode ?? '') : (edge.sourceCode ?? '')
      const targetCode = edge.toNode ? (nodeIdToCodeMap.get(String(edge.toNode)) ?? edge.targetCode ?? '') : (edge.targetCode ?? '')
      const isCurve = edge.isCurve ?? edge.curve ?? false
      const base = {
        id: String(edge.edgeId ?? edge.id),
        sourceCode,
        targetCode,
        code: edge.edgeCode ?? edge.code ?? formatEdgeCode(sourceCode, targetCode, !!edge.regress),
        name: edge.edgeName ?? edge.name ?? '',
        isReverse: edge.regress ?? edge.isReverse ?? false,
        curve: isCurve,
        radius: edge.radius,
        centerX: edge.centerX,
        centerY: edge.centerY
      }
      if (isCurve && edge.controlPoints && edge.controlPoints.length >= 2) {
        base.startX = edge.controlPoints[0].x
        base.startY = edge.controlPoints[0].y
        base.endX = edge.controlPoints[1].x
        base.endY = edge.controlPoints[1].y
      }
      return base
    })
    
    // 初始化 ID 计数器，确保新生成的 ID 不会与现有数据冲突
    if (currentMap.value.nodes && currentMap.value.nodes.length > 0) {
      const maxNodeId = Math.max(...currentMap.value.nodes.map(n => {
        const id = typeof n.id === 'string' ? parseInt(n.id, 10) : n.id
        return isNaN(id) ? 0 : id
      }))
      if (maxNodeId >= nextNodeIdCounter) {
        nextNodeIdCounter = maxNodeId + 1
      }
    }
    if (currentMap.value.edges && currentMap.value.edges.length > 0) {
      const maxEdgeId = Math.max(...currentMap.value.edges.map(e => {
        const id = typeof e.id === 'string' ? parseInt(e.id, 10) : e.id
        return isNaN(id) ? 0 : id
      }))
      if (maxEdgeId >= nextEdgeIdCounter) {
        nextEdgeIdCounter = maxEdgeId + 1
      }
    }

    // 处理资源数据：转换后端字段到前端字段
    const resourcesData = data.mapResources ?? data.resources ?? []
    console.log('[loadMapData] 原始资源数据:', resourcesData)
    currentMap.value.resources = resourcesData.map(resource => ({
      id: String(resource.resourceId ?? resource.id),
      resourceCode: resource.resourceCode ?? resource.code ?? '',
      resourceName: resource.resourceName ?? resource.name ?? '',
      type: resource.type ?? 1,
      capacity: resource.capacity ?? 999,
      maxSpeed: resource.maxSpeed ?? 2,
      canRotate: resource.canRotate !== false,
      entryAction: resource.entryAction ?? 0,
      exitAction: resource.exitAction ?? 0,
      locationCoordinates: resource.locationCoordinates ?? [],
      active: resource.active !== false
    }))
    console.log('[loadMapData] 转换后资源数据:', currentMap.value.resources)

    // 初始化资源 ID 计数器
    if (currentMap.value.resources && currentMap.value.resources.length > 0) {
      const maxResourceId = Math.max(...currentMap.value.resources.map(r => {
        const match = String(r.id).match(/\d+/)
        return match ? parseInt(match[0], 10) : 0
      }))
      if (maxResourceId >= nextResourceIdCounter) {
        nextResourceIdCounter = maxResourceId + 1
      }
    }

    // 加载背景图文件信息
    try {
      const fileRes = await mapsApi.getMapFile(String(mapId))
      const fileData = (fileRes && (fileRes.Data ?? fileRes.data)) || null
      
      if (fileData && fileData.fileUrl) {
        // 使用后端返回的完整URL，添加时间戳防止缓存
        const timestamp = new Date().getTime()
        const imageUrl = `${fileData.fileUrl}?t=${timestamp}`
        
        console.log('加载背景图:', imageUrl)
        
        // 加载图片
        const img = new Image()
        img.onload = () => {
          bgImgSize.value = { width: img.naturalWidth || img.width || 0, height: img.naturalHeight || img.height || 0 }
          bgImageUrl.value = imageUrl
          bgOpacity.value = fileData.opacity ?? 1
          bgRotation.value = fileData.rotation ?? 0
          bgOffsetX.value = fileData.offsetX ?? 0
          bgOffsetY.value = fileData.offsetY ?? 0

          // 如果数据库中的 scale 值太小（小于1），说明是旧的计算方式，使用默认计算
          const dbScale = fileData.scale ?? 0
          if (dbScale > 0 && dbScale < 1) {
            // 旧的 scale 值，重新计算合理的默认值
            bgScale.value = bgImgSize.value.width ? Math.max(0.01, 800 / bgImgSize.value.width) : 1
          } else {
            // 使用数据库中的值或默认值
            bgScale.value = dbScale || (bgImgSize.value.width ? Math.max(0.01, 800 / bgImgSize.value.width) : 1)
          }

          console.log('背景图加载成功:', {
            width: bgImgSize.value.width,
            height: bgImgSize.value.height,
            opacity: bgOpacity.value,
            scale: bgScale.value,
            dbScale: fileData.scale,
            bgWorldWidth: bgWorldWidth.value,
            bgWorldHeight: bgWorldHeight.value,
            url: bgImageUrl.value
          })

          // 如果没有节点数据，重置视图以显示背景图
          if (!nodes.value || nodes.value.length === 0) {
            setTimeout(() => {
              setFirstQuadrantView()
            }, 100)
          }
        }
        img.onerror = (err) => {
          console.error('加载背景图失败:', imageUrl, err)
        }
        img.src = imageUrl
      }
    } catch (error) {
      console.error('加载背景图信息失败:', error)
    }
  } catch (error) {
    console.error('加载地图详情失败:', error)
  }
}

// ======== 拓扑编辑逻辑 ========
const mode = ref('select') // select | addNode | connect | arc | pan | addResource
// 默认节点可视直径（屏幕像素）
const NODE_DIAMETER = 256
const NODE_RADIUS = NODE_DIAMETER / 2
const NODE_STROKE_WIDTH = 2
// 最小缩放（范围扩大1倍）
const MIN_SCALE = 0.005
const nodes = ref(currentMap.value.nodes)
const edges = ref(currentMap.value.edges)
const resources = ref(currentMap.value.resources)
const snapGuideX = ref(null)
const snapGuideY = ref(null)

// ======== 资源区域相关状态 ========
const selectedResourceId = ref(null)
const currentResourceType = ref(1) // 当前选中的资源类型
const resourceDrawingPoints = ref([]) // 正在绘制的资源区域点集
let nextResourceIdCounter = 1

// 当外部载入数据后，同步到本地编辑状态
watch(() => currentMap.value.nodes, (val) => {
  console.log('[watch nodes] 触发更新, 节点数量:', val?.length)
  nodes.value = val || []
}, { immediate: true })
watch(() => currentMap.value.edges, (val) => { edges.value = val || [] }, { immediate: true })
watch(() => currentMap.value.resources, (val) => { resources.value = val || [] }, { immediate: true })

const viewport = ref({ x: 0, y: 0, scale: 0.1 })
let isPanning = false
let panStart = { x: 0, y: 0 }
let viewportStart = { x: 0, y: 0 }
const svgRef = ref(null)
const canvasSize = ref({ width: 0, height: 0 })
let resizeObserver = null

const selectedNodeId = ref(null) // legacy single-select (kept for compatibility)
const selectedEdgeId = ref(null) // legacy single-select (kept for compatibility)
const selectedNodeIds = ref(new Set())
const selectedEdgeIds = ref(new Set())
const selectedArcId = ref(null)
const selectedArcIds = ref(new Set())
const arcMode = ref({ step: 0, firstEdgeId: null, secondEdgeId: null })
const arcHoverEdgeId = ref(null)
const showArcRadiusPanel = ref(false)
const arcRadiusInput = ref(1)
const arcMaxRadius = ref(0)

// ======== 批量切线圆弧（UI 状态） ========
const batchArcPanelVisible = ref(false)
const batchArcRadiusInput = ref(1)

// ======== 批量编辑节点（UI 状态） ========
const batchEditPanelVisible = ref(false)
const batchNodeTypeChoice = ref('NO_CHANGE') // 'NO_CHANGE' | 1 | 2 | 3 | 4
const batchNodeOrientationChoice = ref('NO_CHANGE') // 'NO_CHANGE' | 'NULL' | '0' | '90' | '180' | '270'
const batchNodeAllowRotateChoice = ref('NO_CHANGE') // 'NO_CHANGE' | 'TRUE' | 'FALSE'
const batchNodeAllowReverseEntryChoice = ref('NO_CHANGE') // 'NO_CHANGE' | 'TRUE' | 'FALSE'

// ======== 复制并平移（UI 状态） ========
const copyPanelVisible = ref(false)
const copyOffsetX = ref(0)
const copyOffsetY = ref(0)

// ======== 平移（UI 状态） ========
const movePanelVisible = ref(false)
const moveOffsetX = ref(0)
const moveOffsetY = ref(0)

// ======== 背景图（导入与比例） ========
const bgFileInputRef = ref(null)
const bgImageUrl = ref('')
const bgImgSize = ref({ width: 0, height: 0 }) // 像素尺寸
const bgScale = ref(1) // 比例：每像素对应的世界单位
const bgOpacity = ref(0.6) // 透明度 0~1
const bgRotation = ref(0) // 旋转角度（度）
const bgOffsetX = ref(0) // 地图左下角偏移量X
const bgOffsetY = ref(0) // 地图左下角偏移量Y
const bgSettingsModalVisible = ref(false) // 背景图设置弹窗
const bgWorldWidth = computed(() => Math.max(0, Math.round((bgImgSize.value.width || 0) * (bgScale.value || 0))))
const bgWorldHeight = computed(() => Math.max(0, Math.round((bgImgSize.value.height || 0) * (bgScale.value || 0))))

const revokeBgUrl = () => {
  try {
    if (bgImageUrl.value && bgImageUrl.value.startsWith('blob:')) URL.revokeObjectURL(bgImageUrl.value)
  } catch {}
}

const onBgFileChange = async (evt) => {
  const input = evt?.target
  const file = input && input.files && input.files[0]
  if (!file) return
  
  const lowerName = (file.name || '').toLowerCase()
  const isPgm = lowerName.endsWith('.pgm')

  if (isPgm) {
    revokeBgUrl()
    handlePgmFile(file)
      .catch(() => {})
      .finally(() => { try { if (input) input.value = '' } catch {} })
    return
  }

  revokeBgUrl()
  const objectUrl = URL.createObjectURL(file)
  const img = new Image()
  img.onload = async () => {
    bgImgSize.value = { width: img.naturalWidth || img.width || 0, height: img.naturalHeight || img.height || 0 }
    bgImageUrl.value = objectUrl
    if (!bgScale.value || bgScale.value <= 0) {
      bgScale.value = bgImgSize.value.width ? Math.max(0.01, 800 / bgImgSize.value.width) : 1
    }

    // 上传文件到服务器
    if (currentMap.value.id) {
      try {
        const formData = new FormData()
        formData.append('file', file)
        formData.append('opacity', String(bgOpacity.value))
        formData.append('scale', String(bgScale.value))
        formData.append('rotation', String(bgRotation.value || 0))
        
        const response = await mapsApi.uploadFile(currentMap.value.id, formData)
        
        if (response.success) {
          notify({ message: t('maps.editor.messages.uploadSuccess') || '背景图片上传成功', color: 'success' })
        } else {
          notify({ message: t('maps.editor.messages.uploadFailed') || '背景图片上传失败: ' + (response.message || ''), color: 'danger' })
        }
      } catch (error) {
        console.error('上传背景图片失败:', error)
        notify({ message: t('maps.editor.messages.uploadFailed') || '背景图片上传失败', color: 'danger' })
      }
    }
  }
  img.onerror = () => {
    URL.revokeObjectURL(objectUrl)
  }
  img.src = objectUrl
  try { if (input) input.value = '' } catch {}
}

const clearBgImage = async () => {
  if (!currentMap.value.id) {
    revokeBgUrl()
    bgImageUrl.value = ''
    bgImgSize.value = { width: 0, height: 0 }
    bgRotation.value = 0
    return
  }

  try {
    const response = await mapsApi.deleteMapFile(currentMap.value.id)
    
    if (response.success) {
      revokeBgUrl()
      bgImageUrl.value = ''
      bgImgSize.value = { width: 0, height: 0 }
      bgRotation.value = 0
      notify({ message: t('maps.editor.messages.bgImageDeleted') || '背景图已删除', color: 'success' })
    } else {
      notify({ message: t('maps.editor.messages.bgImageDeleteFailed') || '删除背景图失败', color: 'danger' })
    }
  } catch (error) {
    console.error('删除背景图失败:', error)
    notify({ message: t('maps.editor.messages.bgImageDeleteFailed') || '删除背景图失败', color: 'danger' })
  }
}

const openBgSettingsModal = () => {
  bgSettingsModalVisible.value = true
}

const closeBgSettingsModal = () => {
  bgSettingsModalVisible.value = false
}

const saveBgSettings = async () => {
  if (!currentMap.value.id) return

  // 如果没有背景图，只保存本地参数，不调用后端
  if (!bgImageUrl.value) {
    notify({ message: t('maps.editor.messages.noImageToSave') || '请先上传背景图片', color: 'warning' })
    return
  }

  try {
    const formData = new FormData()
    formData.append('opacity', String(bgOpacity.value))
    formData.append('scale', String(bgScale.value))
    formData.append('rotation', String(bgRotation.value))
    formData.append('offsetX', String(bgOffsetX.value))
    formData.append('offsetY', String(bgOffsetY.value))

    const response = await mapsApi.updateFileSettings(currentMap.value.id, formData)

    if (response.success) {
      notify({ message: t('maps.editor.messages.settingsSaved') || '设置已保存', color: 'success' })
    } else {
      notify({ message: t('maps.editor.messages.settingsSaveFailed') || '设置保存失败', color: 'danger' })
    }
  } catch (error) {
    console.error('保存背景图设置失败:', error)
    notify({ message: t('maps.editor.messages.settingsSaveFailed') || '设置保存失败', color: 'danger' })
  }
}

// ======== 撤销历史 ========
const historyStack = ref([])
const isRestoringHistory = ref(false)
const MAX_HISTORY = 200

const canUndo = computed(() => historyStack.value.length > 0)

const pushHistorySnapshot = () => {
  if (isRestoringHistory.value) return
  try {
    const snapshot = {
      nodes: JSON.parse(JSON.stringify(nodes.value || [])),
      edges: JSON.parse(JSON.stringify(edges.value || [])),
      selectedNodeIds: Array.from(selectedNodeIds.value || []),
      selectedEdgeIds: Array.from(selectedEdgeIds.value || []),
      selectedArcIds: Array.from(selectedArcIds.value || []),
      selectedNodeId: selectedNodeId.value ?? null,
      selectedEdgeId: selectedEdgeId.value ?? null,
      selectedArcId: selectedArcId.value ?? null,
      pendingConnectSourceId: pendingConnectSourceId.value ?? null,
      viewport: { ...(viewport.value || { x: 0, y: 0, scale: 1 }) }
    }
    historyStack.value.push(snapshot)
    if (historyStack.value.length > MAX_HISTORY) historyStack.value.shift()
  } catch {}
}

const undo = () => {
  if (historyStack.value.length === 0) return
  const snap = historyStack.value.pop()
  if (!snap) return
  isRestoringHistory.value = true
  try {
    nodes.value = Array.isArray(snap.nodes) ? snap.nodes : []
    edges.value = Array.isArray(snap.edges) ? snap.edges : []
    selectedNodeIds.value = new Set(snap.selectedNodeIds || [])
    selectedEdgeIds.value = new Set(snap.selectedEdgeIds || [])
    selectedArcIds.value = new Set(snap.selectedArcIds || [])
    selectedNodeId.value = snap.selectedNodeId ?? null
    selectedEdgeId.value = snap.selectedEdgeId ?? null
    selectedArcId.value = snap.selectedArcId ?? null
    pendingConnectSourceId.value = snap.pendingConnectSourceId ?? null
    if (snap.viewport) viewport.value = { ...snap.viewport }
    syncToCurrentMap()
  } finally {
    isRestoringHistory.value = false
  }
}

// 解析并渲染 PGM（P2/P5）为 PNG DataURL，然后设置为背景
const handlePgmFile = async (file) => {
  const buffer = await file.arrayBuffer()
  const parsed = parsePGM(buffer)
  if (!parsed) return
  const { width, height, pixels } = parsed
  const canvas = document.createElement('canvas')
  canvas.width = width
  canvas.height = height
  const ctx = canvas.getContext('2d', { willReadFrequently: true })
  const imageData = ctx.createImageData(width, height)
  const data = imageData.data
  for (let i = 0; i < width * height; i++) {
    const v = pixels[i]
    const j = i * 4
    data[j] = v
    data[j + 1] = v
    data[j + 2] = v
    data[j + 3] = 255
  }
  ctx.putImageData(imageData, 0, 0)
  const dataUrl = canvas.toDataURL('image/png')
  bgImgSize.value = { width, height }
  bgImageUrl.value = dataUrl
  if (!bgScale.value || bgScale.value <= 0) {
    bgScale.value = width ? Math.max(0.01, 800 / width) : 1
  }

  // 上传 PGM 转换后的 PNG 到服务器
  if (currentMap.value.id) {
    try {
      // 将 canvas 转换为 Blob
      const blob = await new Promise(resolve => canvas.toBlob(resolve, 'image/png'))
      if (!blob) return
      
      // 创建 File 对象
      const pngFile = new File([blob], file.name.replace(/\.pgm$/i, '.png'), { type: 'image/png' })
      
      const formData = new FormData()
      formData.append('file', pngFile)
      formData.append('opacity', String(bgOpacity.value))
      formData.append('scale', String(bgScale.value))
      formData.append('rotation', String(bgRotation.value || 0))
      
      const response = await mapsApi.uploadFile(currentMap.value.id, formData)
      
      if (response.success) {
        notify({ message: t('maps.editor.messages.uploadSuccess') || '背景图片上传成功', color: 'success' })
      } else {
        notify({ message: t('maps.editor.messages.uploadFailed') || '背景图片上传失败: ' + (response.message || ''), color: 'danger' })
      }
    } catch (error) {
      console.error('上传 PGM 背景图片失败:', error)
      notify({ message: t('maps.editor.messages.uploadFailed') || '背景图片上传失败', color: 'danger' })
    }
  }
}

// 基础 PGM 解析，支持 P2(ASCII) 与 P5(Binary, 1 或 2 字节灰度)
const parsePGM = (arrayBuffer) => {
  const bytes = new Uint8Array(arrayBuffer)
  let i = 0

  const isWs = (c) => c === 9 || c === 10 || c === 13 || c === 32
  const skipWsAndComments = (idx) => {
    let p = idx
    while (p < bytes.length) {
      if (bytes[p] === 35) { // '#'
        while (p < bytes.length && bytes[p] !== 10 && bytes[p] !== 13) p++
      } else if (isWs(bytes[p])) {
        p++
      } else {
        break
      }
    }
    return p
  }

  const readInt = () => {
    i = skipWsAndComments(i)
    if (i >= bytes.length) return null
    let sign = 1
    if (bytes[i] === 43 || bytes[i] === 45) { // '+' or '-'
      if (bytes[i] === 45) sign = -1
      i++
    }
    let val = 0
    let found = false
    while (i < bytes.length) {
      const c = bytes[i]
      if (c >= 48 && c <= 57) { // '0'-'9'
        val = val * 10 + (c - 48)
        found = true
        i++
      } else {
        break
      }
    }
    return found ? sign * val : null
  }

  i = skipWsAndComments(i)
  if (i + 1 >= bytes.length) return null
  if (bytes[i] !== 80) return null // 'P'
  i++
  const magic = bytes[i++]
  if (magic !== 50 && magic !== 53) return null // '2' or '5'

  const width = readInt()
  const height = readInt()
  const maxVal = readInt()
  if (!(width > 0 && height > 0 && maxVal > 0)) return null

  const total = width * height
  const pixels = new Uint8Array(total)

  if (magic === 50) {
    // P2 ASCII
    for (let k = 0; k < total; k++) {
      const v = readInt()
      if (v == null) return null
      let vv = Math.max(0, Math.min(maxVal, v))
      if (maxVal !== 255) vv = Math.round(vv * 255 / maxVal)
      pixels[k] = vv
    }
    return { width, height, maxVal, pixels }
  }

  // P5 Binary
  i = skipWsAndComments(i)
  if (maxVal < 256) {
    if (i + total > bytes.length) return null
    for (let k = 0; k < total; k++) {
      let v = bytes[i + k]
      if (maxVal !== 255) v = Math.round(v * 255 / maxVal)
      pixels[k] = v
    }
  } else {
    if (i + total * 2 > bytes.length) return null
    for (let k = 0; k < total; k++) {
      const hi = bytes[i + 2 * k]
      const lo = bytes[i + 2 * k + 1]
      let v = (hi << 8) | lo
      v = Math.round(v * 255 / maxVal)
      pixels[k] = v
    }
  }
  return { width, height, maxVal, pixels }
}

const isNodeSelected = (id) => selectedNodeIds.value.has(id) || selectedNodeId.value === id
const isEdgeSelected = (id) => selectedEdgeIds.value.has(id) || selectedEdgeId.value === id
const isArcSelected = (id) => selectedArcIds.value.has(id) || selectedArcId.value === id
let dragNodeState = { isDragging: false, nodeId: null, offsetX: 0, offsetY: 0 }
let dragResourceState = { isDragging: false, resourceId: null, offsetX: 0, offsetY: 0 }
const pendingConnectSourceId = ref(null)
let nextNodeIdCounter = 1000
let nextEdgeIdCounter = 1000
const getNextNodeId = () => String(++nextNodeIdCounter)
const getNextEdgeId = () => String(++nextEdgeIdCounter)

// marquee selection (screen space)
const isMarqueeSelecting = ref(false)
const marqueeStart = ref({ x: 0, y: 0 })
const marqueeEnd = ref({ x: 0, y: 0 })
const mousePos = ref({ x: 0, y: 0 }) // 屏幕坐标（相对SVG容器）
// 叠在线段精准选取（连点轮换）
const pickCycleInfo = ref({ visible: false, index: 0, total: 0, candidatesKey: '', pos: { x: 0, y: 0 }, lastClickTs: 0 })
let pickCycleHideTimer = null
const marqueeRect = computed(() => {
  const x1 = Math.min(marqueeStart.value.x, marqueeEnd.value.x)
  const y1 = Math.min(marqueeStart.value.y, marqueeEnd.value.y)
  const x2 = Math.max(marqueeStart.value.x, marqueeEnd.value.x)
  const y2 = Math.max(marqueeStart.value.y, marqueeEnd.value.y)
  return { x: x1, y: y1, width: x2 - x1, height: y2 - y1 }
})

const setMode = (m) => {
  mode.value = m
  pendingConnectSourceId.value = null
  // 切换模式时清空辅助线
  snapGuideX.value = null
  snapGuideY.value = null
  arcHoverEdgeId.value = null
  if (mode.value !== 'arc') arcMode.value = { step: 0, firstEdgeId: null, secondEdgeId: null }
  showArcRadiusPanel.value = false
}

const getNodeById = (id) => nodes.value.find(n => n.id === id)
// 使用 Map 做 code -> node 的快速索引，避免渲染期 O(N·E) 线性查找
const codeToNodeMap = computed(() => {
  const m = new Map()
  for (const n of (nodes.value || [])) {
    if (n && typeof n.code === 'string') m.set(n.code, n)
  }
  return m
})
const getNodeByCode = (code) => codeToNodeMap.value.get(code) || null
const getNodeCodeById = (id) => {
  const node = getNodeById(id)
  return node ? node.code : null
}
const getNodeIdByCode = (code) => {
  const node = getNodeByCode(code)
  return node ? node.id : null
}

// 生成唯一的节点业务编码，避免与现有节点重复
const getAllNodeCodesSet = () => {
  const set = new Set()
  for (const n of (nodes.value || [])) {
    if (n && typeof n.code === 'string' && n.code) set.add(n.code)
  }
  return set
}

const generateUniqueNodeCode = (prefix = 'N') => {
  const used = getAllNodeCodesSet()
  const regex = new RegExp(`^${prefix}(\\d+)$`)
  let maxNum = 0
  for (const c of used) {
    const m = c.match(regex)
    if (m) {
      const num = parseInt(m[1], 10)
      if (!Number.isNaN(num) && num > maxNum) maxNum = num
    }
  }
  let candidateNum = maxNum + 1
  let candidate = `${prefix}${candidateNum}`
  while (used.has(candidate)) {
    candidateNum += 1
    candidate = `${prefix}${candidateNum}`
  }
  return candidate
}

// 为节点与边补充默认属性
const ensureNodeDefaults = (node) => {
  if (node == null) return
  if (node.name === undefined) node.name = node.code ?? ''
  if (node.type === undefined) node.type = 1
  if (node.orientation === undefined) node.orientation = null
  if (node.allowRotate === undefined) node.allowRotate = false
  if (node.allowReverseEntry === undefined) node.allowReverseEntry = false
  if (node.maxCoordinateOffset === undefined) node.maxCoordinateOffset = 0.5
  if (node.maxAngleDeviation === undefined) node.maxAngleDeviation = 15
  if (node.maxSpeed === undefined) node.maxSpeed = 1.2
}

const ensureEdgeDefaults = (edge) => {
  if (edge == null) return
  if (edge.name === undefined) edge.name = ''
  if (edge.isReverse === undefined) edge.isReverse = false
  if (edge.isArc === undefined) edge.isArc = false
  if (edge.centerX === undefined) edge.centerX = null
  if (edge.centerY === undefined) edge.centerY = null
  // 确保sourceCode和targetCode字段存在
  if (edge.sourceCode === undefined && edge.sourceId !== undefined) {
    edge.sourceCode = getNodeCodeById(edge.sourceId)
  }
  if (edge.targetCode === undefined && edge.targetId !== undefined) {
    edge.targetCode = getNodeCodeById(edge.targetId)
  }
  // 确保code字段存在
  if (edge.code === undefined && edge.sourceCode && edge.targetCode) {
    edge.code = formatEdgeCode(edge.sourceCode, edge.targetCode, !!edge.isReverse)
  }
}

const ensureArcDefaults = (arc) => {
  if (arc == null) return
  if (arc.name === undefined) arc.name = ''
  if (arc.isReverse === undefined) arc.isReverse = false
}

/**
 * 获取储位状态
 * @param node 节点对象
 * @returns 状态值：0=空闲，1=占用，2=预占用，3=禁用
 * @author zzy
 */
const getStorageStatus = (node) => {
  if (!node?.storageLocations?.length) {
    console.log('[getStorageStatus] 节点无库位数据:', node?.code, node?.storageLocations)
    return 0
  }
  const status = node.storageLocations[0].status ?? 0
  console.log('[getStorageStatus] 节点库位状态:', node.code, status)
  return status
}

// 节点填充颜色：储位为橙黄色，其它为白色（未选中时）
const getNodeFill = (node) => {
  if (!node || !node.type) return '#ffffff'
  if (node.type === 1) return '#74c0fc'  // speediness
  if (node.type === 4) return '#0d47a1'  // parking
  return node.type === 2 ? '#ffb020' : '#ffffff'  // store
}

// 节点描边颜色：跟随类型
const getNodeStroke = (node) => {
  if (!node) return '#6c757d'
  // 当允许旋转时，外圆线显示为蓝色
  if (node.allowRotate) return '#0d6efd'
  if (!node.type) return '#6c757d'
  if (node.type === 3) return '#28a745'  // charger
  if (node.type === 2) return '#d9480f'  // store
  if (node.type === 4) return '#0d47a1'  // parking
  return '#6c757d'
}

// 节点描边粗细与监控界面一致：选中为 6，未选中为 2
const getNodeStrokeWidth = (node) => {
  if (!node) return 2
  return isNodeSelected(node.id) ? 6 : 2
}

// 选中单个元素（优先支持多选集合中单个的情况）
const selectedSingleNode = computed(() => {
  if (selectedNodeIds.value && selectedNodeIds.value.size === 1) {
    const id = Array.from(selectedNodeIds.value)[0]
    const n = getNodeById(id)
    ensureNodeDefaults(n)
    return n || null
  }
  if (selectedNodeId.value != null) {
    const n = getNodeById(selectedNodeId.value)
    ensureNodeDefaults(n)
    return n || null
  }
  return null
})

const selectedSingleEdge = computed(() => {
  if (selectedEdgeIds.value && selectedEdgeIds.value.size === 1) {
    const id = Array.from(selectedEdgeIds.value)[0]
    const e = edges.value.find(x => x.id === id)
    ensureEdgeDefaults(e)
    return e || null
  }
  if (selectedEdgeId.value != null) {
    const e = edges.value.find(x => x.id === selectedEdgeId.value)
    ensureEdgeDefaults(e)
    return e || null
  }
  return null
})

const selectedSingleArc = computed(() => {
  if (selectedArcIds.value && selectedArcIds.value.size === 1) {
    const id = Array.from(selectedArcIds.value)[0]
    const a = (edges.value || []).find(x => x.id === id && x.curve)
    ensureArcDefaults(a)
    return a || null
  }
  if (selectedArcId.value != null) {
    const a = (edges.value || []).find(x => x.id === selectedArcId.value && x.curve)
    ensureArcDefaults(a)
    return a || null
  }
  return null
})

// 选中的单个资源
const selectedSingleResource = computed(() => {
  if (selectedResourceId.value != null) {
    return (resources.value || []).find(r => r.id === selectedResourceId.value) || null
  }
  return null
})

// 已选直线数量（不包含弧线）
const selectedStraightEdgeCount = computed(() => {
  const ids = new Set(selectedEdgeIds.value)
  if (selectedEdgeId.value != null) ids.add(selectedEdgeId.value)
  let count = 0
  for (const id of ids) {
    const e = edges.value.find(x => x.id === id)
    if (e && !e.curve) count += 1
  }
  return count
})

const getArcStartNodeId = (arc) => {
  if (!arc) return ''
  if (arc.sourceCode != null) return arc.sourceCode
  const n = findExistingNodeAt(arc.startX, arc.startY, 1e-4)
  return n ? n.code : ''
}

const getArcEndNodeId = (arc) => {
  if (!arc) return ''
  if (arc.targetCode != null) return arc.targetCode
  const n = findExistingNodeAt(arc.endX, arc.endY, 1e-4)
  return n ? n.code : ''
}

const toWorldPoint = (clientX, clientY) => {
  const svg = document.querySelector('.topo-canvas svg')
  const rect = svg?.getBoundingClientRect()
  if (!rect) return { x: 0, y: 0 }
  const scaleEff = viewport.value.scale || 1
  const x = (clientX - rect.left - viewport.value.x) / scaleEff
  const yScreen = (clientY - rect.top - viewport.value.y) / scaleEff
  // Cartesian Y up: invert screen y
  const y = -yScreen
  return { x, y }
}

// ======== 对齐吸附（同 X/Y 轴） ========
const SNAP_THRESHOLD_PX = 8

const getSvgRect = () => {
  const el = svgRef.value
  return el ? el.getBoundingClientRect() : null
}

const getMouseScreenPoint = (e) => {
  const rect = getSvgRect()
  if (!rect) return { x: 0, y: 0 }
  return { x: e.clientX - rect.left, y: e.clientY - rect.top }
}

const worldToScreenX = (worldX) => {
  const scaleEff = viewport.value.scale || 1
  return worldX * scaleEff + (viewport.value.x || 0)
}
const worldToScreenY = (worldY) => {
  const scaleEff = viewport.value.scale || 1
  return (-worldY) * scaleEff + (viewport.value.y || 0)
}

const findNearestSnapX = (screenX, excludeNodeId = null) => {
  let best = { dx: Number.POSITIVE_INFINITY, worldX: null }
  for (const n of nodes.value) {
    if (excludeNodeId != null && n.id === excludeNodeId) continue
    const nx = worldToScreenX(n.x)
    const dx = Math.abs(screenX - nx)
    if (dx < best.dx) best = { dx, worldX: n.x }
  }
  return best.dx <= SNAP_THRESHOLD_PX ? best.worldX : null
}

const findNearestSnapY = (screenY, excludeNodeId = null) => {
  let best = { dy: Number.POSITIVE_INFINITY, worldY: null }
  for (const n of nodes.value) {
    if (excludeNodeId != null && n.id === excludeNodeId) continue
    const ny = worldToScreenY(n.y)
    const dy = Math.abs(screenY - ny)
    if (dy < best.dy) best = { dy, worldY: n.y }
  }
  return best.dy <= SNAP_THRESHOLD_PX ? best.worldY : null
}

const getSnappedWorldFromEvent = (e, baseOffsetX = 0, baseOffsetY = 0, excludeNodeId = null) => {
  // 先算出基于鼠标与偏移的候选世界坐标
  const p = toWorldPoint(e.clientX, e.clientY)
  let candidateX = Math.round(p.x + baseOffsetX)
  let candidateY = Math.round(p.y + baseOffsetY)

  // 将候选世界坐标换算到屏幕坐标，用于阈值判断
  const screenX = worldToScreenX(candidateX)
  const screenY = worldToScreenY(candidateY)

  // 查找最近的同 X/Y 轴对齐目标
  const snappedX = findNearestSnapX(screenX, excludeNodeId)
  const snappedY = findNearestSnapY(screenY, excludeNodeId)

  if (snappedX != null) candidateX = snappedX
  if (snappedY != null) candidateY = snappedY

  // 更新辅助线显示
  snapGuideX.value = snappedX != null ? snappedX : null
  snapGuideY.value = snappedY != null ? snappedY : null

  return { x: candidateX, y: candidateY }
}

const onCanvasMouseDown = (e) => {
  // Middle mouse button pans regardless of mode
  if (e && e.button === 1) {
    isPanning = true
    panStart = { x: e.clientX, y: e.clientY }
    viewportStart = { x: viewport.value.x, y: viewport.value.y }
    try { e.preventDefault && e.preventDefault() } catch {}
    return
  }

  if (mode.value === 'pan') {
    isPanning = true
    panStart = { x: e.clientX, y: e.clientY }
    viewportStart = { x: viewport.value.x, y: viewport.value.y }
    return
  }

  if (mode.value === 'addNode') {
    const p = getSnappedWorldFromEvent(e)
    pushHistorySnapshot()
    const newNode = { id: getNextNodeId(), x: Math.round(p.x), y: Math.round(p.y), code: generateUniqueNodeCode('N'), orientation: null, allowRotate: false, maxCoordinateOffset: 0.5, maxAngleDeviation: 15, maxSpeed: 1.2 }
    nodes.value.push(newNode)
    selectedNodeId.value = newNode.id
    syncToCurrentMap()
    return
  }

  // 资源区域绘制模式：收集点击坐标
  if (mode.value === 'addResource') {
    const p = toWorldPoint(e.clientX, e.clientY)
    resourceDrawingPoints.value.push({ x: Math.round(p.x * 100) / 100, y: Math.round(p.y * 100) / 100 })
    return
  }

  if (mode.value === 'select') {
    // start marquee selection
    const p = getMouseScreenPoint(e)
    marqueeStart.value = p
    marqueeEnd.value = p
    isMarqueeSelecting.value = true
    selectedNodeId.value = null
    selectedEdgeId.value = null
    selectedArcId.value = null
    selectedResourceId.value = null
    if (!e.shiftKey) {
      selectedNodeIds.value = new Set()
      selectedEdgeIds.value = new Set()
      selectedArcIds.value = new Set()
    }
  }
}

const onCanvasMouseMove = (e) => {
  // 更新鼠标屏幕位置（用于提示）
  const rect = getSvgRect()
  if (rect) {
    mousePos.value = { x: e.clientX - rect.left, y: e.clientY - rect.top }
  }

  if (isPanning) {
    const dx = e.clientX - panStart.x
    const dy = e.clientY - panStart.y
    viewport.value.x = viewportStart.x + dx
    viewport.value.y = viewportStart.y + dy
    // 平移时不显示吸附辅助线
    snapGuideX.value = null
    snapGuideY.value = null
  }

  if (dragNodeState.isDragging && dragNodeState.nodeId != null) {
    const node = getNodeById(dragNodeState.nodeId)
    if (node) {
      const p = getSnappedWorldFromEvent(
        e,
        dragNodeState.offsetX,
        dragNodeState.offsetY,
        dragNodeState.nodeId
      )
      node.x = Math.round(p.x)
      node.y = Math.round(p.y)
      // 拖拽过程中不进行全量同步，结束时统一同步以降低重渲染
    }
    return
  }

  // 资源区域拖拽
  if (dragResourceState.isDragging && dragResourceState.resourceId != null) {
    const resource = resources.value.find(r => r.id === dragResourceState.resourceId)
    if (resource && resource.locationCoordinates) {
      const p = toWorldPoint(e.clientX, e.clientY)
      const dx = p.x - dragResourceState.offsetX
      const dy = p.y - dragResourceState.offsetY
      dragResourceState.offsetX = p.x
      dragResourceState.offsetY = p.y
      resource.locationCoordinates.forEach(coord => {
        coord.x = Math.round((coord.x + dx) * 100) / 100
        coord.y = Math.round((coord.y + dy) * 100) / 100
      })
    }
    return
  }

  // addNode 模式下，移动时给出吸附预览
  if (mode.value === 'addNode') {
    getSnappedWorldFromEvent(e)
    return
  }

  // marquee selection live update
  if (mode.value === 'select' && isMarqueeSelecting.value) {
    marqueeEnd.value = getMouseScreenPoint(e)
    scheduleMarqueeSelectionUpdate(!!e.shiftKey)
    return
  }

  // arc 模式第二条边选择时的悬停高亮
  if (mode.value === 'arc' && arcMode.value.step === 1) {
    const p = getMouseScreenPoint(e)
    const ids = getEdgeCandidatesAtPoint(p.x, p.y)
    // 过滤掉第一条已选中的边
    const hoverId = ids.find(id => id !== arcMode.value.firstEdgeId) ?? null
    arcHoverEdgeId.value = hoverId || null
  }

  // 其他情况隐藏辅助线
  if (mode.value !== 'addNode') {
    snapGuideX.value = null
    snapGuideY.value = null
  }
}

const onCanvasMouseUp = () => {
  const wasDragging = !!dragNodeState.isDragging
  const wasResourceDragging = !!dragResourceState.isDragging
  isPanning = false
  dragNodeState = { isDragging: false, nodeId: null, offsetX: 0, offsetY: 0 }
  dragResourceState = { isDragging: false, resourceId: null, offsetX: 0, offsetY: 0 }
  // 结束交互时清空辅助线（addNode 悬停除外，由 move 决定）
  if (mode.value !== 'addNode') {
    snapGuideX.value = null
    snapGuideY.value = null
  }
  if (mode.value !== 'arc') {
    arcHoverEdgeId.value = null
  }
  // end marquee
  if (isMarqueeSelecting.value) {
    isMarqueeSelecting.value = false
  }
  if (wasDragging) syncToCurrentMap()
  if (wasResourceDragging) syncResourcesToCurrentMap()
}

const onCanvasWheel = (e) => {
  const factor = e.deltaY > 0 ? 0.9 : 1.1
  const newScale = Math.min(3, Math.max(MIN_SCALE, viewport.value.scale * factor))

  // 缩放中心围绕鼠标位置
  const svg = document.querySelector('.topo-canvas svg')
  const rect = svg?.getBoundingClientRect()
  if (rect) {
    const cx = e.clientX - rect.left
    const cy = e.clientY - rect.top
    const scaleFactor = newScale / viewport.value.scale
    viewport.value.x = cx - scaleFactor * (cx - viewport.value.x)
    viewport.value.y = cy - scaleFactor * (cy - viewport.value.y)
  }

  viewport.value.scale = newScale
}

const onNodeMouseDown = (e, node) => {
  // Middle mouse button pans even when down on a node
  if (e && e.button === 1) {
    isPanning = true
    panStart = { x: e.clientX, y: e.clientY }
    viewportStart = { x: viewport.value.x, y: viewport.value.y }
    try { e.preventDefault && e.preventDefault() } catch {}
    return
  }

  if (mode.value === 'select') {
    pushHistorySnapshot()
    selectedNodeId.value = node.id
    const p = toWorldPoint(e.clientX, e.clientY)
    dragNodeState = { isDragging: true, nodeId: node.id, offsetX: node.x - p.x, offsetY: node.y - p.y }
  } else if (mode.value === 'pan') {
    onCanvasMouseDown(e)
  }
}

const onNodeClick = (evt, node) => {
  if (mode.value === 'connect') {
    if (!pendingConnectSourceId.value) {
      // 第一次点击：设置起点
      pendingConnectSourceId.value = node.id
      selectedNodeId.value = node.id
    } else if (pendingConnectSourceId.value === node.id) {
      // 点击同一节点：取消连线链
      pendingConnectSourceId.value = null
      selectedNodeId.value = node.id
    } else {
      // 创建从上一个节点到当前节点的边（非连续连线：创建后清空起点）
      const sourceCode = getNodeCodeById(pendingConnectSourceId.value)
      const targetCode = getNodeCodeById(node.id)
      const edgeCode = formatEdgeCode(sourceCode, targetCode, false)
      // 若已存在相同三元组或重复编码，则不再新增
      const dupTriple = edgeExists(sourceCode, targetCode, false)
      const dupCode = codeExists(edgeCode)
      if (dupTriple || dupCode) {
        const exist = edges.value.find(e => !e.curve && e.sourceCode === sourceCode && e.targetCode === targetCode && !!e.isReverse === false)
        if (exist) {
          selectedEdgeId.value = exist.id
          selectedEdgeIds.value = new Set([exist.id])
        }
        // 非连续：检测到重复后也结束一次连线操作
        pendingConnectSourceId.value = null
        selectedNodeId.value = node.id
        return
      }
      pushHistorySnapshot()
      const newEdge = { id: getNextEdgeId(), sourceCode, targetCode, code: edgeCode, isReverse: false, curve: false, isArc: false }
      edges.value.push(newEdge)
      // 非连续：成功创建后清空起点
      pendingConnectSourceId.value = null
      selectedNodeId.value = node.id
      syncToCurrentMap()
    }
  } else if (mode.value === 'select') {
    // 点击节点时选中节点并清空边的选择
    if (!evt || !evt.shiftKey) {
      selectedNodeIds.value = new Set([node.id])
    } else {
      const set = new Set(selectedNodeIds.value)
      if (set.has(node.id)) set.delete(node.id); else set.add(node.id)
      selectedNodeIds.value = set
    }
    selectedNodeId.value = node.id
    selectedEdgeId.value = null
    selectedEdgeIds.value = new Set()
  }
}

const onEdgeClick = (edge, evt) => {
  const e = evt || window.event
  const p = getMouseScreenPoint(e)
  const candidateIds = getEdgeCandidatesAtPoint(p.x, p.y)
  const pickedId = pickEdgeFromCandidates(candidateIds, p.x, p.y)
  if (pickedId == null) return

  if (mode.value === 'select') {
    if (!e || !e.shiftKey) {
      selectedEdgeIds.value = new Set([pickedId])
    } else {
      const set = new Set(selectedEdgeIds.value)
      if (set.has(pickedId)) set.delete(pickedId); else set.add(pickedId)
      selectedEdgeIds.value = set
    }
    selectedEdgeId.value = pickedId
    selectedNodeId.value = null
    selectedNodeIds.value = new Set()
    selectedArcId.value = null
    selectedArcIds.value = new Set()
  } else if (mode.value === 'arc') {
    if (arcMode.value.step === 0) {
      arcMode.value.firstEdgeId = pickedId
      arcMode.value.step = 1
    } else if (arcMode.value.step === 1) {
      if (pickedId === arcMode.value.firstEdgeId) {
        arcMode.value = { step: 0, firstEdgeId: null, secondEdgeId: null }
        return
      }
      arcMode.value.secondEdgeId = pickedId
      arcHoverEdgeId.value = null
      prepareArcRadiusPanel()
    }
  }
}

const PICK_RADIUS_PX = 36

const getEdgeCandidatesAtPoint = (sx, sy) => {
  const arr = []
  for (const ed of edges.value) {
    const s = getNodeByCode(ed.sourceCode)
    const t = getNodeByCode(ed.targetCode)
    if (!s || !t) continue
    const x1 = worldToScreenX(s.x)
    const y1 = worldToScreenY(s.y)
    const x2 = worldToScreenX(t.x)
    const y2 = worldToScreenY(t.y)
    const d = pointToSegmentDistancePx(sx, sy, x1, y1, x2, y2)
    if (d <= PICK_RADIUS_PX) arr.push({ id: ed.id, d })
  }
  arr.sort((a, b) => (a.d - b.d) || (a.id - b.id))
  return arr.map(x => x.id)
}

const pointToSegmentDistancePx = (px, py, x1, y1, x2, y2) => {
  const vx = x2 - x1
  const vy = y2 - y1
  const wx = px - x1
  const wy = py - y1
  const c1 = vx * wx + vy * wy
  if (c1 <= 0) return Math.hypot(px - x1, py - y1)
  const c2 = vx * vx + vy * vy
  if (c2 <= c1) return Math.hypot(px - x2, py - y2)
  const t = c1 / c2
  const projx = x1 + t * vx
  const projy = y1 + t * vy
  return Math.hypot(px - projx, py - projy)
}

const pickEdgeFromCandidates = (ids, sx, sy) => {
  if (!ids || ids.length === 0) {
    pickCycleInfo.value.visible = false
    return null
  }
  const key = ids.join(',')
  const now = Date.now()
  const last = pickCycleInfo.value
  const near = Math.hypot((sx - last.pos.x), (sy - last.pos.y)) <= 4
  const sameSet = last.candidatesKey === key
  const within = now - (last.lastClickTs || 0) <= 1000
  let index = 0
  if (sameSet && near && within) {
    index = (last.index + 1) % ids.length
  }
  pickCycleInfo.value = { visible: true, index, total: ids.length, candidatesKey: key, pos: { x: sx, y: sy }, lastClickTs: now }
  if (pickCycleHideTimer) clearTimeout(pickCycleHideTimer)
  pickCycleHideTimer = setTimeout(() => { pickCycleInfo.value.visible = false }, 900)
  return ids[index]
}

const onArcClick = (evt) => {
  if (mode.value !== 'select') return
  const e = evt || window.event
  const p = getMouseScreenPoint(e)
  const candidateIds = getArcCandidatesAtPoint(p.x, p.y)
  const pickedId = pickArcFromCandidates(candidateIds, p.x, p.y)
  if (pickedId == null) return
  if (!e || !e.shiftKey) {
    selectedArcIds.value = new Set([pickedId])
  } else {
    const set = new Set(selectedArcIds.value)
    if (set.has(pickedId)) set.delete(pickedId); else set.add(pickedId)
    selectedArcIds.value = set
  }
  selectedArcId.value = pickedId
  // clear others when selecting arcs (single source of truth like nodes/edges)
  selectedNodeId.value = null
  selectedEdgeId.value = null
  selectedNodeIds.value = new Set()
  selectedEdgeIds.value = new Set()
}

const getArcCandidatesAtPoint = (sx, sy) => {
  const arr = []
  for (const a of (edges.value || []).filter(e => e.curve)) {
    const d = pointToArcDistancePx(a, sx, sy)
    if (d <= PICK_RADIUS_PX) arr.push({ id: a.id, d })
  }
  arr.sort((a, b) => (a.d - b.d) || (a.id > b.id ? 1 : -1))
  return arr.map(x => x.id)
}

const pointToArcDistancePx = (arc, px, py) => {
  // sample the polyline along the arc path and compute min distance in screen space
  const toRad = (deg) => deg * (Math.PI / 180)
  const toDeg = (rad) => rad * (180 / Math.PI)
  const normDeg = (a) => { let x = a % 360; if (x < 0) x += 360; return x }
  const normDelta = (a0, a1) => {
    const raw = a1 - a0
    let d = ((raw % 360) + 360) % 360
    if (d > 180) d -= 360
    return d
  }
  // compute angles from geometry instead of chargerd fields
  const startAngle = normDeg(toDeg(Math.atan2(-(arc.startY - arc.centerY), arc.startX - arc.centerX)))
  const endAngle = normDeg(toDeg(Math.atan2(-(arc.endY - arc.centerY), arc.endX - arc.centerX)))
  const delta = normDelta(startAngle, endAngle)
  const steps = Math.max(8, Math.min(64, Math.ceil(Math.abs(delta) / 6)))
  let minD = Number.POSITIVE_INFINITY
  let prev = null
  for (let i = 0; i <= steps; i++) {
    const t = i / steps
    const ang = startAngle + delta * t
    const x = arc.centerX + arc.radius * Math.cos(toRad(ang))
    const y = arc.centerY - arc.radius * Math.sin(toRad(ang))
    const sxp = worldToScreenX(x)
    const syp = worldToScreenY(y)
    if (prev) {
      const d = pointToSegmentDistancePx(px, py, prev.x, prev.y, sxp, syp)
      if (d < minD) minD = d
    }
    prev = { x: sxp, y: syp }
  }
  return minD
}

const pickArcFromCandidates = (ids, sx, sy) => {
  if (!ids || ids.length === 0) {
    pickCycleInfo.value.visible = false
    return null
  }
  const key = `arc:` + ids.join(',')
  const now = Date.now()
  const last = pickCycleInfo.value
  const near = Math.hypot((sx - last.pos.x), (sy - last.pos.y)) <= 4
  const sameSet = last.candidatesKey === key
  const within = now - (last.lastClickTs || 0) <= 1000
  let index = 0
  if (sameSet && near && within) {
    index = (last.index + 1) % ids.length
  }
  pickCycleInfo.value = { visible: true, index, total: ids.length, candidatesKey: key, pos: { x: sx, y: sy }, lastClickTs: now }
  if (pickCycleHideTimer) clearTimeout(pickCycleHideTimer)
  pickCycleHideTimer = setTimeout(() => { pickCycleInfo.value.visible = false }, 900)
  return ids[index]
}

const zoomIn = () => { viewport.value.scale = Math.min(3, viewport.value.scale + 0.1) }
const zoomOut = () => { viewport.value.scale = Math.max(MIN_SCALE, viewport.value.scale - 0.1) }
const setFirstQuadrantView = () => {
  const height = canvasSize.value.height || 0
  viewport.value = { x: 0, y: height, scale: 0.1 }
}
const resetView = () => { setFirstQuadrantView() }

const syncToCurrentMap = () => {
  // 规范化边的业务编码（倒车后缀 -P）
  const normalizedEdges = (edges.value || []).map(e => ({
    ...e,
    code: formatEdgeCode(e.sourceCode, e.targetCode, !!e.isReverse)
  }))
  edges.value = normalizedEdges
  currentMap.value.nodes = [...nodes.value]
  currentMap.value.edges = normalizedEdges
}

// ======== 资源区域相关方法 ========
const syncResourcesToCurrentMap = () => {
  currentMap.value.resources = [...resources.value]
}

const getNextResourceId = () => {
  return `R${nextResourceIdCounter++}`
}

const generateUniqueResourceCode = (prefix = 'RES') => {
  const used = new Set((resources.value || []).map(r => r.resourceCode))
  let num = 1
  let candidate = `${prefix}${num}`
  while (used.has(candidate)) {
    num++
    candidate = `${prefix}${num}`
  }
  return candidate
}

// 设置资源绘制模式
const setResourceMode = (resourceType) => {
  if (mode.value === 'addResource' && currentResourceType.value === resourceType) {
    // 如果已经在绘制模式且类型相同，完成当前绘制
    finishResourceDrawing()
  } else {
    // 切换到资源绘制模式
    mode.value = 'addResource'
    currentResourceType.value = resourceType
    resourceDrawingPoints.value = []
    selectedResourceId.value = null
  }
}

// 完成资源区域绘制
const finishResourceDrawing = () => {
  if (resourceDrawingPoints.value.length >= 3) {
    pushHistorySnapshot()
    const newResource = {
      id: getNextResourceId(),
      resourceCode: generateUniqueResourceCode('RES'),
      resourceName: '',
      type: currentResourceType.value,
      capacity: 999,
      maxSpeed: 2,
      canRotate: true,
      entryAction: 0,
      exitAction: 0,
      locationCoordinates: [...resourceDrawingPoints.value],
      active: true
    }
    resources.value.push(newResource)
    selectedResourceId.value = newResource.id
    syncResourcesToCurrentMap()
  }
  resourceDrawingPoints.value = []
  mode.value = 'select'
}

// 取消资源区域绘制
const cancelResourceDrawing = () => {
  resourceDrawingPoints.value = []
  mode.value = 'select'
}

// 撤销资源绘制的最后一个点
const undoLastResourcePoint = () => {
  if (resourceDrawingPoints.value.length > 0) {
    resourceDrawingPoints.value.pop()
  }
}

// 更新资源数据
const updateResource = (resourceId, updates) => {
  const resource = resources.value.find(r => r.id === resourceId)
  if (resource) {
    Object.assign(resource, updates)
    syncResourcesToCurrentMap()
  }
}

// 根据 ID 获取资源
const getResourceById = (resourceId) => {
  return resources.value.find(r => r.id === resourceId) || null
}

// 添加新资源（用于外部调用）
const addResource = (resourceData) => {
  pushHistorySnapshot()
  const newResource = {
    id: getNextResourceId(),
    resourceCode: resourceData.resourceCode || generateUniqueResourceCode('RES'),
    resourceName: resourceData.resourceName || '',
    type: resourceData.type || 1,
    capacity: resourceData.capacity || 999,
    maxSpeed: resourceData.maxSpeed || 2,
    canRotate: resourceData.canRotate !== false,
    entryAction: resourceData.entryAction || 0,
    exitAction: resourceData.exitAction || 0,
    locationCoordinates: resourceData.locationCoordinates || [],
    active: resourceData.active !== false
  }
  resources.value.push(newResource)
  syncResourcesToCurrentMap()
  return newResource
}

// 获取资源类型对应的图标
const getResourceIcon = (type) => {
  const icons = {
    1: 'local_parking',    // 停靠点
    2: 'ev_station',       // 充电桩
    3: 'elevator',         // 电梯
    4: 'air',              // 风淋门
    5: 'conveyor_belt',    // 传送带
    6: 'inventory_2',      // 存储区
    7: 'crop_free',        // 标记区域
    8: 'more_horiz'        // 其他
  }
  return icons[type] || 'crop_free'
}

// 获取资源类型对应的颜色
const getResourceColor = (type, alpha = 1) => {
  const colors = {
    1: `rgba(33, 150, 243, ${alpha})`,   // 停靠点 - 蓝色
    2: `rgba(76, 175, 80, ${alpha})`,    // 充电桩 - 绿色
    3: `rgba(156, 39, 176, ${alpha})`,   // 电梯 - 紫色
    4: `rgba(0, 188, 212, ${alpha})`,    // 风淋门 - 青色
    5: `rgba(255, 152, 0, ${alpha})`,    // 传送带 - 橙色
    6: `rgba(121, 85, 72, ${alpha})`,    // 存储区 - 棕色
    7: `rgba(158, 158, 158, ${alpha})`,  // 标记区域 - 灰色
    8: `rgba(96, 125, 139, ${alpha})`    // 其他 - 蓝灰色
  }
  return colors[type] || `rgba(158, 158, 158, ${alpha})`
}

// 获取资源多边形的点字符串
const getResourcePolygonPoints = (resource) => {
  if (!resource.locationCoordinates || resource.locationCoordinates.length === 0) return ''
  return resource.locationCoordinates.map(p => `${p.x},${-p.y}`).join(' ')
}

// 获取资源区域中心点
const getResourceCenter = (resource) => {
  if (!resource.locationCoordinates || resource.locationCoordinates.length === 0) {
    return { x: 0, y: 0 }
  }
  const pts = resource.locationCoordinates
  const sumX = pts.reduce((acc, p) => acc + p.x, 0)
  const sumY = pts.reduce((acc, p) => acc + p.y, 0)
  return { x: sumX / pts.length, y: sumY / pts.length }
}

// 资源点击事件
const onResourceClick = (resource, evt) => {
  evt.stopPropagation()
  if (mode.value === 'select') {
    selectedResourceId.value = resource.id
    selectedNodeId.value = null
    selectedEdgeId.value = null
    selectedArcId.value = null
    selectedNodeIds.value = new Set()
    selectedEdgeIds.value = new Set()
    selectedArcIds.value = new Set()
  }
}

// 资源鼠标按下事件（启动拖拽）
const onResourceMouseDown = (resource, evt) => {
  if (evt && evt.button === 1) {
    isPanning = true
    panStart = { x: evt.clientX, y: evt.clientY }
    viewportStart = { x: viewport.value.x, y: viewport.value.y }
    try { evt.preventDefault && evt.preventDefault() } catch {}
    return
  }
  if (mode.value === 'select' && selectedResourceId.value === resource.id) {
    pushHistorySnapshot()
    const p = toWorldPoint(evt.clientX, evt.clientY)
    dragResourceState = { isDragging: true, resourceId: resource.id, offsetX: p.x, offsetY: p.y }
  }
}

// 删除选中的资源
const deleteSelectedResource = () => {
  if (selectedResourceId.value == null) return
  pushHistorySnapshot()
  resources.value = resources.value.filter(r => r.id !== selectedResourceId.value)
  selectedResourceId.value = null
  syncResourcesToCurrentMap()
}

const canvasCursorClass = computed(() => {
  switch (mode.value) {
    case 'addNode': return 'cursor-crosshair'
    case 'addResource': return 'cursor-crosshair'
    case 'pan': return 'cursor-grab'
    case 'connect': return 'cursor-alias'
    case 'arc': return 'cursor-alias'
    default: return 'cursor-default'
  }
})

  // Node inner scale to keep visual size constant regardless of viewport zoom
  const nodeScreenScale = computed(() => {
    const s = viewport.value.scale || 1
    return s > 0 ? (1 / s) : 1
  })

// ======== 网格与刻度 ========
const worldBounds = computed(() => {
  const w = canvasSize.value.width || 0
  const h = canvasSize.value.height || 0
  const scaleEff = viewport.value.scale || 1
  const xMin = (-viewport.value.x) / scaleEff
  // For Cartesian Y up, map screen to world: worldY = -(screenY - viewport.y)/scaleEff
  const yMax = (viewport.value.y) / scaleEff
  const yMin = -((h - viewport.value.y) / scaleEff)
  const xMax = (w - viewport.value.x) / scaleEff
  return { xMin, xMax, yMin, yMax }
})

const gridStep = computed(() => {
  // 动态选择合适的网格间距（世界单位）
  // 目标：每格在屏幕上约 targetPx 像素；使用 1/2/5 系列（...0.1,0.2,0.5,1,2,5,10...）
  const targetPx = 20 // 约 40px 一个格
  const scaleEff = (viewport.value.scale || 1)
  const raw = targetPx / scaleEff
  if (!(raw > 0)) return 1
  const exp = Math.floor(Math.log10(raw))
  const mag = Math.pow(10, exp)
  const norm = raw / mag
  let mult = 1
  if (norm < 1.5) mult = 1
  else if (norm < 3) mult = 2
  else if (norm < 7) mult = 5
  else mult = 10
  return mag * mult
})

const gridXLines = computed(() => {
  const { xMin, xMax } = worldBounds.value
  const step = gridStep.value
  const start = Math.floor(xMin / step) * step
  const end = Math.ceil(xMax / step) * step
  const lines = []
  for (let x = start; x <= end; x += step) {
    lines.push({ x, major: (x % (step * 5) === 0) })
  }
  return lines
})

const gridYLines = computed(() => {
  const { yMin, yMax } = worldBounds.value
  const step = gridStep.value
  const start = Math.floor(yMin / step) * step
  const end = Math.ceil(yMax / step) * step
  const lines = []
  for (let y = start; y <= end; y += step) {
    lines.push({ y, major: (y % (step * 5) === 0) })
  }
  return lines
})

const topRulerTicks = computed(() => {
  const step = gridStep.value
  const ticks = []
  for (const gx of gridXLines.value) {
    const scaleEff = viewport.value.scale || 1
    const screenX = gx.x * scaleEff + viewport.value.x
    if (screenX >= 32 && screenX <= (canvasSize.value.width || 0)) {
      ticks.push({ x: screenX, major: gx.major, label: gx.major ? gx.x : '' })
    }
  }
  return ticks
})

const leftRulerTicks = computed(() => {
  const ticks = []
  for (const gy of gridYLines.value) {
    // Cartesian Y up: world y -> screen y = -y
    const scaleEff = viewport.value.scale || 1
    const screenY = (-gy.y) * scaleEff + viewport.value.y
    if (screenY >= 16 && screenY <= (canvasSize.value.height || 0)) {
      ticks.push({ y: screenY, major: gy.major, label: gy.major ? gy.y : '' })
    }
  }
  return ticks
})

const updateCanvasSize = () => {
  const el = svgRef.value
  if (!el) return
  const rect = el.getBoundingClientRect()
  canvasSize.value = { width: Math.round(rect.width), height: Math.round(rect.height) }
}

onMounted(() => {
  nextTick(() => {
    const initCanvas = () => {
      updateCanvasSize()
      // 确保尺寸有效后再设置视图
      if (canvasSize.value.width > 0 && canvasSize.value.height > 0) {
        setFirstQuadrantView()
      } else {
        // 尺寸无效时延迟重试
        requestAnimationFrame(initCanvas)
        return
      }
      window.addEventListener('resize', updateCanvasSize)
      window.addEventListener('keydown', onKeyDown)
      if (window.ResizeObserver) {
        resizeObserver = new ResizeObserver(() => {
          updateCanvasSize()
          // 首次获取有效尺寸时重新设置视图
          if (canvasSize.value.height > 0 && viewport.value.y === 0) {
            setFirstQuadrantView()
          }
        })
        if (svgRef.value) resizeObserver.observe(svgRef.value)
      }
      try { document.body && document.body.classList && document.body.classList.add('no-scroll') } catch {}
    }
    requestAnimationFrame(initCanvas)
  })
  // 加载下拉选项数据
  loadOptions()
  //检查是否为编辑模式
  const mapId = route.params.id || route.query.id
  if (mapId) {
    isEditMode.value = true
    loadMapData(String(mapId))
  }
})

onUnmounted(() => {
  window.removeEventListener('resize', updateCanvasSize)
  window.removeEventListener('keydown', onKeyDown)
  if (resizeObserver) try { resizeObserver.disconnect() } catch {}
  resizeObserver = null
  // 恢复页面滚动
  try { document.body && document.body.classList && document.body.classList.remove('no-scroll') } catch {}
})

const deleteSelectedEdge = () => {
  if (selectedEdgeIds.value.size === 0 && selectedEdgeId.value == null) return
  pushHistorySnapshot()
  const ids = new Set(selectedEdgeIds.value)
  if (selectedEdgeId.value != null) ids.add(selectedEdgeId.value)
  edges.value = edges.value.filter(e => !ids.has(e.id))
  selectedEdgeId.value = null
  selectedEdgeIds.value = new Set()
  // prune arcs whose edges were removed
  pruneInvalidArcs()
  syncToCurrentMap()
}

// ===== 为框选节点：按X方向最近点生成一条直线（去重） =====
const generateEdgesForSelectedNodesX = () => {
  const nodeIds = Array.from(new Set(selectedNodeIds.value))
  if (nodeIds.length < 2) return
  pushHistorySnapshot()
  const selected = nodeIds.map(id => getNodeById(id)).filter(Boolean)
  if (selected.length < 2) return

  const EPS = 1e-6
  const floatsEq = (a, b) => Math.abs(a - b) <= EPS

  const addEdgeOneWay = (from, to) => {
    if (!from || !to || from.id === to.id) return
    let source = from
    let target = to
    if (from.x > to.x || (floatsEq(from.x, to.x) && from.y > to.y)) {
      source = to
      target = from
    }
    const edgeCode = formatEdgeCode(source.code, target.code, false)
    const dupTriple = edgeExists(source.code, target.code, false)
    const dupCode = codeExists(edgeCode)
    if (dupTriple || dupCode) return
    const name = `${source?.code ?? source.id}-${target?.code ?? target.id}`
    edges.value.push({ id: getNextEdgeId(), sourceCode: source.code, targetCode: target.code, code: edgeCode, isReverse: false, curve: false, isArc: false, name })
  }

  // For each node: find nearest aligned on X (same Y) within selection
  for (const n of selected) {
    let left = null, right = null
    for (const m of selected) {
      if (!m || m.id === n.id) continue
      if (floatsEq(m.y, n.y)) {
        if (m.x < n.x) { if (!left || m.x > left.x) left = m }
        if (m.x > n.x) { if (!right || m.x < right.x) right = m }
      }
    }
    if (left) addEdgeOneWay(n, left)
    if (right) addEdgeOneWay(n, right)
  }

  syncToCurrentMap()
}

// ===== 为框选节点：按Y方向最近点生成一条直线（去重） =====
const generateEdgesForSelectedNodesY = () => {
  const nodeIds = Array.from(new Set(selectedNodeIds.value))
  if (nodeIds.length < 2) return
  pushHistorySnapshot()
  const selected = nodeIds.map(id => getNodeById(id)).filter(Boolean)
  if (selected.length < 2) return

  const EPS = 1e-6
  const floatsEq = (a, b) => Math.abs(a - b) <= EPS

  const addEdgeOneWay = (from, to) => {
    if (!from || !to || from.id === to.id) return
    let source = from
    let target = to
    if (from.x > to.x || (floatsEq(from.x, to.x) && from.y > to.y)) {
      source = to
      target = from
    }
    const edgeCode = formatEdgeCode(source.code, target.code, false)
    const dupTriple = edgeExists(source.code, target.code, false)
    const dupCode = codeExists(edgeCode)
    if (dupTriple || dupCode) return
    const name = `${source?.code ?? source.id}-${target?.code ?? target.id}`
    edges.value.push({ id: getNextEdgeId(), sourceCode: source.code, targetCode: target.code, code: edgeCode, isReverse: false, curve: false, isArc: false, name })
  }

  // For each node: find nearest aligned on Y (same X) within selection
  for (const n of selected) {
    let up = null, down = null
    for (const m of selected) {
      if (!m || m.id === n.id) continue
      if (floatsEq(m.x, n.x)) {
        if (m.y < n.y) { if (!down || m.y > down.y) down = m }
        if (m.y > n.y) { if (!up || m.y < up.y) up = m }
      }
    }
    if (up) addEdgeOneWay(n, up)
    if (down) addEdgeOneWay(n, down)
  }

  syncToCurrentMap()
}

const deleteSelectedNode = () => {
  if (selectedNodeIds.value.size === 0 && selectedNodeId.value == null) return
  pushHistorySnapshot()
  const nodeIds = new Set(selectedNodeIds.value)
  if (selectedNodeId.value != null) nodeIds.add(selectedNodeId.value)
  
  // 获取要删除的节点的code集合
  const nodeCodesToDelete = new Set()
  for (const nodeId of nodeIds) {
    const node = getNodeById(nodeId)
    if (node && node.code) {
      nodeCodesToDelete.add(node.code)
    }
  }
  
  nodes.value = nodes.value.filter(n => !nodeIds.has(n.id))
  
  // 删除关联的边（基于sourceCode和targetCode）
  edges.value = edges.value.filter(e => {
    return !nodeCodesToDelete.has(e.sourceCode) && !nodeCodesToDelete.has(e.targetCode)
  })
  
  selectedNodeId.value = null
  selectedEdgeId.value = null
  selectedNodeIds.value = new Set()
  selectedEdgeIds.value = new Set()
  // prune arcs whose edges were removed by node deletion
  pruneInvalidArcs()
  syncToCurrentMap()
}

const deleteSelectedArc = () => {
  if (selectedArcIds.value.size === 0 && selectedArcId.value == null) return
  pushHistorySnapshot()
  const ids = new Set(selectedArcIds.value)
  if (selectedArcId.value != null) ids.add(selectedArcId.value)
  edges.value = edges.value.filter(a => !(a.curve && ids.has(a.id)))
  selectedArcId.value = null
  selectedArcIds.value = new Set()
  syncToCurrentMap()
}

const pruneInvalidArcs = () => {
  // No edge id linkage maintained after removing edge1Id/edge2Id
  const arcIdSet = new Set(edges.value.filter(e => e.curve).map(x => x.id))
  if (selectedArcId.value != null && !arcIdSet.has(selectedArcId.value)) selectedArcId.value = null
  const newSel = new Set()
  for (const id of selectedArcIds.value) { if (arcIdSet.has(id)) newSel.add(id) }
  selectedArcIds.value = newSel
}

const onKeyDown = (e) => {
  // Ignore global delete/backspace when typing in inputs/textareas/selects or contenteditable
  const target = e.target
  const tag = target && target.tagName ? String(target.tagName).toLowerCase() : ''
  const isEditable = !!(target && (target.isContentEditable || tag === 'input' || tag === 'textarea' || tag === 'select'))
  if (isEditable) return

  // 资源绘制模式：ESC 取消绘制，Enter 完成绘制
  if (mode.value === 'addResource') {
    if (e.key === 'Escape') {
      e.preventDefault()
      cancelResourceDrawing()
      return
    }
    if (e.key === 'Enter') {
      e.preventDefault()
      finishResourceDrawing()
      return
    }
    if (e.key === 'Backspace') {
      e.preventDefault()
      undoLastResourcePoint()
      return
    }
  }

  if (e.key === 'Delete' || e.key === 'Backspace') {
    const hasNodeSel = selectedNodeId.value != null || selectedNodeIds.value.size > 0
    const hasEdgeSel = selectedEdgeId.value != null || selectedEdgeIds.value.size > 0
    const hasArcSel = selectedArcId.value != null || selectedArcIds.value.size > 0
    const hasResourceSel = selectedResourceId.value != null
    if (hasNodeSel || hasEdgeSel || hasArcSel || hasResourceSel) {
      e.preventDefault()
      // delete all selected types in one go
      if (hasNodeSel) deleteSelectedNode()
      if (hasEdgeSel) deleteSelectedEdge()
      if (hasArcSel) deleteSelectedArc()
      if (hasResourceSel) deleteSelectedResource()
    }
  }
}

const updateMarqueeSelection = (isAdditive) => {
  const rect = marqueeRect.value
  const isNodeInside = (n) => {
    const sx = worldToScreenX(n.x)
    const sy = worldToScreenY(n.y)
    return sx >= rect.x && sx <= rect.x + rect.width && sy >= rect.y && sy <= rect.y + rect.height
  }

  const newSelectedNodes = new Set(isAdditive ? selectedNodeIds.value : [])
  for (const n of nodes.value) {
    if (isNodeInside(n)) newSelectedNodes.add(n.id)
  }
  selectedNodeIds.value = newSelectedNodes

  // auto-select edges whose both endpoints are selected
  const selectedNodeSet = selectedNodeIds.value
  const newSelectedEdges = new Set(isAdditive ? selectedEdgeIds.value : [])
  for (const e of edges.value) {
    const sourceNode = getNodeByCode(e.sourceCode)
    const targetNode = getNodeByCode(e.targetCode)
    if (sourceNode && targetNode && selectedNodeSet.has(sourceNode.id) && selectedNodeSet.has(targetNode.id)) {
      newSelectedEdges.add(e.id)
    }
  }
  selectedEdgeIds.value = newSelectedEdges

  // arcs selection by marquee: if both arc endpoints are inside, select it
  const newSelectedArcs = new Set(isAdditive ? selectedArcIds.value : [])
  for (const a of (edges.value || []).filter(e => e.curve)) {
    const sx1 = worldToScreenX(a.startX)
    const sy1 = worldToScreenY(a.startY)
    const sx2 = worldToScreenX(a.endX)
    const sy2 = worldToScreenY(a.endY)
    const inside1 = sx1 >= rect.x && sx1 <= rect.x + rect.width && sy1 >= rect.y && sy1 <= rect.y + rect.height
    const inside2 = sx2 >= rect.x && sx2 <= rect.x + rect.width && sy2 >= rect.y && sy2 <= rect.y + rect.height
    if (inside1 && inside2) newSelectedArcs.add(a.id)
  }
  selectedArcIds.value = newSelectedArcs
}

// 使用 rAF 节流框选集合更新，降低大数据量下的每帧计算
let marqueeUpdateScheduled = false
let marqueeIsAdditivePending = false
const scheduleMarqueeSelectionUpdate = (isAdditive) => {
  marqueeIsAdditivePending = !!isAdditive
  if (marqueeUpdateScheduled) return
  marqueeUpdateScheduled = true
  requestAnimationFrame(() => {
    marqueeUpdateScheduled = false
    updateMarqueeSelection(marqueeIsAdditivePending)
  })
}

// ======== 圆弧计算（参考 edubeam arcUtils） ========
const calculateArcBetweenEdges = (edge1, edge2, radius, arcId) => {
  const n11 = getNodeByCode(edge1.sourceCode)
  const n12 = getNodeByCode(edge1.targetCode)
  const n21 = getNodeByCode(edge2.sourceCode)
  const n22 = getNodeByCode(edge2.targetCode)
  if (!n11 || !n12 || !n21 || !n22) return null

  const p1a = { x: n11.x, y: n11.y }
  const p1b = { x: n12.x, y: n12.y }
  const p2a = { x: n21.x, y: n21.y }
  const p2b = { x: n22.x, y: n22.y }

  const intersection = findLineIntersectionInfinite(p1a, p1b, p2a, p2b)
  if (!intersection) return null

  const len1 = Math.hypot(p1b.x - p1a.x, p1b.y - p1a.y)
  const len2 = Math.hypot(p2b.x - p2a.x, p2b.y - p2a.y)
  if (len1 < 1e-12 || len2 < 1e-12) return null

  const u1Line = { x: (p1b.x - p1a.x) / len1, y: (p1b.y - p1a.y) / len1 }
  const u2Line = { x: (p2b.x - p2a.x) / len2, y: (p2b.y - p2a.y) / len2 }

  const selectDirection = (pa, pb, uLine, ip) => {
    const sA = (pa.x - ip.x) * uLine.x + (pa.y - ip.y) * uLine.y
    const sB = (pb.x - ip.x) * uLine.x + (pb.y - ip.y) * uLine.y
    const pos1 = Math.max(0, Math.max(sA, sB))
    const sA2 = -sA
    const sB2 = -sB
    const pos2 = Math.max(0, Math.max(sA2, sB2))
    if (pos2 > pos1 + 1e-12) return { u: { x: -uLine.x, y: -uLine.y }, sPosMax: pos2 }
    return { u: uLine, sPosMax: pos1 }
  }

  const dirSel1 = selectDirection(p1a, p1b, u1Line, intersection)
  const dirSel2 = selectDirection(p2a, p2b, u2Line, intersection)
  const u1 = dirSel1.u
  const u2 = dirSel2.u

  const dot = Math.max(-1, Math.min(1, u1.x * u2.x + u1.y * u2.y))
  const theta = Math.acos(dot)
  if (!(theta > 1e-6 && theta < Math.PI - 1e-6)) return null

  const sinHalf = Math.sin(theta / 2)
  const cosHalf = Math.cos(theta / 2)
  if (Math.abs(sinHalf) < 1e-12) return null

  let radiusUsed = radius
  let d = radiusUsed * (cosHalf / sinHalf)

  const s1PosMax = dirSel1.sPosMax
  const s2PosMax = dirSel2.sPosMax
  const dMax = Math.min(s1PosMax, s2PosMax)
  if (dMax <= 1e-12) return null
  const rMax = dMax * Math.tan(theta / 2)
  if (rMax <= 1e-12) return null
  if (radiusUsed > rMax + 1e-8) radiusUsed = rMax
  d = radiusUsed * (cosHalf / sinHalf)
  if (d > dMax + 1e-8) return null

  const bisectorVec = { x: u1.x + u2.x, y: u1.y + u2.y }
  const bisLen = Math.hypot(bisectorVec.x, bisectorVec.y)
  if (bisLen < 1e-12) return null
  const bisUnit = { x: bisectorVec.x / bisLen, y: bisectorVec.y / bisLen }
  const h = radiusUsed / sinHalf
  const centerX = intersection.x + bisUnit.x * h
  const centerY = intersection.y + bisUnit.y * h

  const startPoint = { x: intersection.x + u1.x * d, y: intersection.y + u1.y * d }
  const endPoint = { x: intersection.x + u2.x * d, y: intersection.y + u2.y * d }

  if (!isPointOnLineSegment(p1a, p1b, startPoint, 1e-6)) return null
  if (!isPointOnLineSegment(p2a, p2b, endPoint, 1e-6)) return null

  const toDeg = (rad) => rad * (180 / Math.PI)
  const normDeg = (a) => { let x = a % 360; if (x < 0) x += 360; return x }
  const shortestDelta = (a0, a1) => { let dlt = (a1 - a0) % 360; if (dlt <= -180) dlt += 360; if (dlt > 180) dlt -= 360; return dlt }

  // start/end angles are derivable when rendering; do not persist them on edges

  return {
    id: arcId,
    radius: radiusUsed,
    centerX,
    centerY,
    startX: startPoint.x,
    startY: startPoint.y,
    endX: endPoint.x,
    endY: endPoint.y
  }
}

const findLineIntersectionInfinite = (p1, p2, p3, p4) => {
  const x1 = p1.x, y1 = p1.y
  const x2 = p2.x, y2 = p2.y
  const x3 = p3.x, y3 = p3.y
  const x4 = p4.x, y4 = p4.y
  const denom = (x1 - x2) * (y3 - y4) - (y1 - y2) * (x3 - x4)
  if (Math.abs(denom) < 1e-10) return null
  const t = ((x1 - x3) * (y3 - y4) - (y1 - y3) * (x3 - x4)) / denom
  return { x: x1 + t * (x2 - x1), y: y1 + t * (y2 - y1) }
}

const isPointOnLineSegment = (p1, p2, point, tolerance = 1e-6) => {
  const dx = p2.x - p1.x
  const dy = p2.y - p1.y
  const length = Math.sqrt(dx * dx + dy * dy)
  if (length === 0) return false
  const t = ((point.x - p1.x) * dx + (point.y - p1.y) * dy) / (length * length)
  if (t < 0 || t > 1) return false
  const closestX = p1.x + t * dx
  const closestY = p1.y + t * dy
  const distance = Math.sqrt((point.x - closestX) ** 2 + (point.y - closestY) ** 2)
  return distance <= tolerance
}

const getArcPath = (arc) => {
  if (!arc) return ''
  const toRad = (deg) => deg * (Math.PI / 180)
  const toDeg = (rad) => rad * (180 / Math.PI)
  const normDeg = (a) => { let x = a % 360; if (x < 0) x += 360; return x }
  const normDelta = (a0, a1) => {
    const raw = a1 - a0
    let d = ((raw % 360) + 360) % 360
    if (d > 180) d -= 360
    return d
  }
  const startAngle = normDeg(toDeg(Math.atan2(-(arc.startY - arc.centerY), arc.startX - arc.centerX)))
  const endAngle = normDeg(toDeg(Math.atan2(-(arc.endY - arc.centerY), arc.endX - arc.centerX)))
  const delta = normDelta(startAngle, endAngle)
  const sweepFlag = delta > 0 ? 1 : 0
  // mid at 2/3 of angular delta
  const midAngle = startAngle + delta * (2 / 3)
  const rx = arc.radius
  const ry = arc.radius
  // world coords (y up), convert to screen by negating y in path
  const x1 = arc.startX
  const y1s = -arc.startY
  const xm = arc.centerX + rx * Math.cos(toRad(midAngle))
  const ym = arc.centerY - ry * Math.sin(toRad(midAngle))
  const xms = xm
  const yms = -ym
  const x2 = arc.endX
  const y2s = -arc.endY
  // Both segments are <= 180 degrees, safe to use largeArcFlag=0
  const largeArcFlag = 0
  return `M ${x1},${y1s} A ${rx},${ry} 0 ${largeArcFlag},${sweepFlag} ${xms},${yms} A ${rx},${ry} 0 ${largeArcFlag},${sweepFlag} ${x2},${y2s}`
}

const getEdgePath = (edge) => {
  if (!edge) return ''
  const s = getNodeByCode(edge.sourceCode)
  const t = getNodeByCode(edge.targetCode)
  if (!s || !t) return ''
  const dx = t.x - s.x
  const dy = t.y - s.y
  const xm = s.x + (2 / 3) * dx
  const ym = s.y + (2 / 3) * dy
  const x1 = s.x
  const y1s = -s.y
  const xms = xm
  const yms = -ym
  const x2 = t.x
  const y2s = -t.y
  return `M ${x1},${y1s} L ${xms},${yms} L ${x2},${y2s}`
}

// 线段颜色和箭头颜色保持一致
const getEdgeStroke = (edge) => {
  if (mode.value === 'arc' && arcMode.value.step === 1 && arcMode.value.firstEdgeId === edge.id) return '#f59f00'
  if (mode.value === 'arc' && arcMode.value.step === 1 && arcHoverEdgeId.value === edge.id) return '#0d6efd'
  // 非选中时黑色线；选中时根据倒车与否变化
  if (!isEdgeSelected(edge.id)) return '#000000'
  if (edge.isReverse) return '#dc3545'
  return '#0d6efd'
}

const getEdgeMarker = (edge) => {
  if (mode.value === 'arc' && arcMode.value.step === 1 && arcMode.value.firstEdgeId === edge.id) return 'url(#arrow-orange)'
  if (mode.value === 'arc' && arcMode.value.step === 1 && arcHoverEdgeId.value === edge.id) return 'url(#arrow-blue)'
  // 非选中时统一黑色箭头；选中时根据倒车与否变化
  if (!isEdgeSelected(edge.id)) return 'url(#arrow-black)'
  if (edge.isReverse) return 'url(#arrow-red)'
  return 'url(#arrow-blue)'
}

// 弧线颜色与箭头
const getArcStroke = (arc) => {
  // 非选中时黑色线；选中时根据倒车与否变化
  if (!isArcSelected(arc.id)) return '#000000'
  if (arc.isReverse) return '#dc3545'
  return '#0d6efd'
}

const getArcMarker = (arc) => {
  // 非选中时黑色箭头；选中时根据倒车与否变化
  if (!isArcSelected(arc.id)) return 'url(#arrow-black)'
  if (arc.isReverse) return 'url(#arrow-red)'
  return 'url(#arrow-blue)'
}

const createArcBetweenSelectedEdges = () => {
  const e1 = edges.value.find(e => e.id === arcMode.value.firstEdgeId)
  const e2 = edges.value.find(e => e.id === arcMode.value.secondEdgeId)
  if (!e1 || !e2) return
  const arcId = getNextEdgeId()
  const radius = Math.min(Math.max(0.0001, arcRadiusInput.value || 0.0001), arcMaxRadius.value || 1e9)
  const arc = calculateArcBetweenEdges(e1, e2, radius, arcId)
  if (!arc) return
  pushHistorySnapshot()
  // 在两条选中边的切点处创建/复用节点，并对边进行分割
  const startNodeCode = ensureNodeAtPointAndSplitEdge(e1, arc.startX, arc.startY)
  const endNodeCode = ensureNodeAtPointAndSplitEdge(e2, arc.endX, arc.endY)
  // 绑定圆弧端点节点编号
  arc.sourceCode = startNodeCode
  arc.targetCode = endNodeCode
  arc.code = formatEdgeCode(startNodeCode, endNodeCode, false)
  // 记录圆弧（融合到 edges 列表），避免重复编码
  if (!codeExists(arc.code)) {
    edges.value.push({ ...arc, curve: true, isReverse: false, name: arc.name ?? '' })
  }
  // 清空边选择，避免引用已被分割的旧边
  selectedEdgeId.value = null
  selectedEdgeIds.value = new Set()
  syncToCurrentMap()
}

const prepareArcRadiusPanel = () => {
  // 计算最大半径（通过二分搜索）
  const e1 = edges.value.find(e => e.id === arcMode.value.firstEdgeId)
  const e2 = edges.value.find(e => e.id === arcMode.value.secondEdgeId)
  if (!e1 || !e2) return
  const arcId = `probe_${Date.now()}`
  let lo = 0.0001, hi = 100000, best = 0
  for (let i = 0; i < 40; i++) {
    const mid = (lo + hi) / 2
    const res = calculateArcBetweenEdges(e1, e2, mid, arcId)
    if (res) { best = mid; lo = mid } else { hi = mid }
  }
  arcMaxRadius.value = best
  arcRadiusInput.value = Math.max(0.0001, Number(best.toFixed(3)))
  showArcRadiusPanel.value = true
}

const cancelArcRadiusPanel = () => {
  showArcRadiusPanel.value = false
  arcMode.value = { step: 0, firstEdgeId: null, secondEdgeId: null }
  arcHoverEdgeId.value = null
}

const confirmArcRadius = () => {
  createArcBetweenSelectedEdges()
  showArcRadiusPanel.value = false
  arcMode.value = { step: 0, firstEdgeId: null, secondEdgeId: null }
  mode.value = 'select'
  arcHoverEdgeId.value = null
}

// ======== 批量切线圆弧 ========
const openBatchArcPanel = () => {
  if (selectedStraightEdgeCount.value < 2) return
  batchArcRadiusInput.value = Math.max(0.0001, Number((batchArcRadiusInput.value || 1).toFixed(3)))
  batchArcPanelVisible.value = true
}

const cancelBatchArcPanel = () => {
  batchArcPanelVisible.value = false
}

const confirmBatchArcRadius = () => {
  const r = Math.max(0.0001, batchArcRadiusInput.value || 0.0001)
  generateBatchTangentialArcs(r)
  batchArcPanelVisible.value = false
}

// ======== 批量编辑节点 ========
const openBatchEditPanel = () => {
  if (selectedNodeIds.value.size < 2) return
  batchNodeTypeChoice.value = 'NO_CHANGE'
  batchNodeOrientationChoice.value = 'NO_CHANGE'
  batchNodeAllowRotateChoice.value = 'NO_CHANGE'
  batchNodeAllowReverseEntryChoice.value = 'NO_CHANGE'
  batchEditPanelVisible.value = true
}

const cancelBatchEditPanel = () => {
  batchEditPanelVisible.value = false
}

const confirmBatchEdit = () => {
  const applyType = batchNodeTypeChoice.value !== 'NO_CHANGE'
  const applyOri = batchNodeOrientationChoice.value !== 'NO_CHANGE'
  const applyRotate = batchNodeAllowRotateChoice.value !== 'NO_CHANGE'
  const applyReverse = batchNodeAllowReverseEntryChoice.value !== 'NO_CHANGE'
  if (!applyType && !applyOri && !applyRotate && !applyReverse) {
    batchEditPanelVisible.value = false
    return
  }
  pushHistorySnapshot()
  const ids = Array.from(selectedNodeIds.value || [])
  for (const id of ids) {
    const n = getNodeById(id)
    if (!n) continue
    ensureNodeDefaults(n)
    if (applyType) {
      n.type = batchNodeTypeChoice.value
    }
    if (applyOri) {
      if (batchNodeOrientationChoice.value === 'NULL') {
        n.orientation = null
      } else {
        const num = Number(batchNodeOrientationChoice.value)
        if (!Number.isNaN(num)) n.orientation = num
      }
    }
    if (applyRotate) {
      n.allowRotate = (batchNodeAllowRotateChoice.value === 'TRUE')
    }
    if (applyReverse) {
      n.allowReverseEntry = (batchNodeAllowReverseEntryChoice.value === 'TRUE')
    }
  }
  syncToCurrentMap()
  batchEditPanelVisible.value = false
}

// ======== 复制并平移 ========
const openCopyPanel = () => {
  const hasNodeSel = (selectedNodeIds.value && selectedNodeIds.value.size > 0) || (selectedNodeId.value != null)
  if (!hasNodeSel) return
  copyOffsetX.value = 0
  copyOffsetY.value = 0
  copyPanelVisible.value = true
}

const cancelCopyPanel = () => {
  copyPanelVisible.value = false
}

const confirmCopy = () => {
  const dx = Number(copyOffsetX.value) || 0
  const dy = Number(copyOffsetY.value) || 0
  // 禁止在 (0,0) 偏移时复制
  if (dx === 0 && dy === 0) {
    try { proxy?.$swal?.fire(t('maps.editor.messages.offsetCannotBeZero'), '', 'warning') } catch {}
    return
  }
  // 收集选中节点（包含单选）
  const nodeIdSet = new Set(selectedNodeIds.value || [])
  if (selectedNodeId.value != null) nodeIdSet.add(selectedNodeId.value)
  if (nodeIdSet.size === 0) { copyPanelVisible.value = false; return }

  // 构建选中节点、以及旧code集合
  const selectedNodes = Array.from(nodeIdSet).map(id => getNodeById(id)).filter(Boolean)
  const selectedNodeCodeSet = new Set(selectedNodes.map(n => n.code).filter(Boolean))

  // 维护一个局部已用code集合，避免新节点编码冲突
  const usedCodes = getAllNodeCodesSet()
  const generateUniqueNodeCodeLocal = (prefix = 'N') => {
    const regex = new RegExp(`^${prefix}(\\d+)$`)
    let maxNum = 0
    for (const c of usedCodes) {
      const m = c.match(regex)
      if (m) {
        const num = parseInt(m[1], 10)
        if (!Number.isNaN(num) && num > maxNum) maxNum = num
      }
    }
    let candidateNum = maxNum + 1
    let candidate = `${prefix}${candidateNum}`
    while (usedCodes.has(candidate)) {
      candidateNum += 1
      candidate = `${prefix}${candidateNum}`
    }
    usedCodes.add(candidate)
    return candidate
  }

  pushHistorySnapshot()

  // 1) 复制节点（ID新、编码新、坐标偏移，属性保持）
  const oldCodeToNewCode = new Map()
  const newNodeIds = []
  for (const src of selectedNodes) {
    const newId = getNextNodeId()
    const newCode = generateUniqueNodeCodeLocal('N')
    const dst = {
      id: newId,
      x: Math.round((src.x || 0) + dx),
      y: Math.round((src.y || 0) + dy),
      code: newCode,
      name: src.name ?? '',
      type: src.type ?? 1,
      orientation: src.orientation ?? null,
      allowRotate: !!src.allowRotate,
      allowReverseEntry: !!src.allowReverseEntry,
      maxCoordinateOffset: src.maxCoordinateOffset ?? 0.5,
      maxAngleDeviation: src.maxAngleDeviation ?? 15,
      maxSpeed: src.maxSpeed ?? 1.2,
    }
    ensureNodeDefaults(dst)
    nodes.value.push(dst)
    oldCodeToNewCode.set(src.code, newCode)
    newNodeIds.push(newId)
  }

  // 2) 复制直线边：仅当两端节点均在选中节点集合内
  const edgeIdSet = new Set(selectedEdgeIds.value || [])
  if (selectedEdgeId.value != null) edgeIdSet.add(selectedEdgeId.value)
  const newEdgeIds = []
  for (const eid of edgeIdSet) {
    const e = (edges.value || []).find(x => x.id === eid && !x.curve)
    if (!e) continue
    const a = e.sourceCode
    const b = e.targetCode
    if (!selectedNodeCodeSet.has(a) || !selectedNodeCodeSet.has(b)) continue
    const na = oldCodeToNewCode.get(a)
    const nb = oldCodeToNewCode.get(b)
    if (!na || !nb) continue
    const attrs = { name: e.name ?? '', isReverse: !!e.isReverse }
    const newCode = formatEdgeCode(na, nb, !!attrs.isReverse)
    if (edgeExists(na, nb, !!attrs.isReverse) || codeExists(newCode)) continue
    const ne = { id: getNextEdgeId(), sourceCode: na, targetCode: nb, code: newCode, isReverse: !!attrs.isReverse, curve: false, isArc: false, name: attrs.name }
    edges.value.push(ne)
    newEdgeIds.push(ne.id)
  }

  // 3) 复制弧线：仅当两端节点均在选中节点集合内；几何整体平移
  const arcIdSet = new Set(selectedArcIds.value || [])
  if (selectedArcId.value != null) arcIdSet.add(selectedArcId.value)
  for (const aid of arcIdSet) {
    const a = (edges.value || []).find(x => x.id === aid && x.curve)
    if (!a) continue
    const s = a.sourceCode
    const t = a.targetCode
    if (!selectedNodeCodeSet.has(s) || !selectedNodeCodeSet.has(t)) continue
    const ns = oldCodeToNewCode.get(s)
    const nt = oldCodeToNewCode.get(t)
    if (!ns || !nt) continue
    const newCode = formatEdgeCode(ns, nt, !!a.isReverse)
    if (codeExists(newCode)) continue
    const ar = {
      id: getNextEdgeId(),
      curve: true,
      isReverse: !!a.isReverse,
      radius: a.radius,
      centerX: (a.centerX ?? 0) + dx,
      centerY: (a.centerY ?? 0) + dy,
      startX: (a.startX ?? 0) + dx,
      startY: (a.startY ?? 0) + dy,
      endX: (a.endX ?? 0) + dx,
      endY: (a.endY ?? 0) + dy,
      sourceCode: ns,
      targetCode: nt,
      code: newCode,
      name: a.name ?? ''
    }
    edges.value.push(ar)
    newEdgeIds.push(ar.id)
  }

  // 4) 更新选择为新复制的内容
  selectedNodeIds.value = new Set(newNodeIds)
  selectedEdgeIds.value = new Set(newEdgeIds)
  selectedArcIds.value = new Set(newEdgeIds.filter(id => {
    const ed = edges.value.find(e => e.id === id)
    return !!(ed && ed.curve)
  }))
  selectedNodeId.value = null
  selectedEdgeId.value = null
  selectedArcId.value = null

  syncToCurrentMap()
  copyPanelVisible.value = false
}

// ======== 平移 ========
const openMovePanel = () => {
  const hasNodeSel = (selectedNodeIds.value && selectedNodeIds.value.size > 0) || (selectedNodeId.value != null)
  if (!hasNodeSel) return
  moveOffsetX.value = 0
  moveOffsetY.value = 0
  movePanelVisible.value = true
}

const cancelMovePanel = () => {
  movePanelVisible.value = false
}

const confirmMove = () => {
  const dx = Number(moveOffsetX.value) || 0
  const dy = Number(moveOffsetY.value) || 0
  // 禁止在 (0,0) 偏移时平移
  if (dx === 0 && dy === 0) {
    return
  }
  // 收集选中节点（包含单选）
  const nodeIdSet = new Set(selectedNodeIds.value || [])
  if (selectedNodeId.value != null) nodeIdSet.add(selectedNodeId.value)
  if (nodeIdSet.size === 0) { movePanelVisible.value = false; return }

  pushHistorySnapshot()

  // 1) 平移选中的节点
  const selectedNodes = Array.from(nodeIdSet).map(id => getNodeById(id)).filter(Boolean)
  const selectedNodeCodeSet = new Set(selectedNodes.map(n => n.code).filter(Boolean))
  
  for (const node of selectedNodes) {
    node.x = Math.round((node.x || 0) + dx)
    node.y = Math.round((node.y || 0) + dy)
  }

  // 2) 平移弧线：仅当两端节点均在选中节点集合内时才平移几何坐标
  const arcIdSet = new Set(selectedArcIds.value || [])
  if (selectedArcId.value != null) arcIdSet.add(selectedArcId.value)
  for (const aid of arcIdSet) {
    const a = (edges.value || []).find(x => x.id === aid && x.curve)
    if (!a) continue
    const s = a.sourceCode
    const t = a.targetCode
    // 只有当弧线的两端节点都被选中时，才平移弧线的几何坐标
    if (selectedNodeCodeSet.has(s) && selectedNodeCodeSet.has(t)) {
      a.centerX = (a.centerX ?? 0) + dx
      a.centerY = (a.centerY ?? 0) + dy
      a.startX = (a.startX ?? 0) + dx
      a.startY = (a.startY ?? 0) + dy
      a.endX = (a.endX ?? 0) + dx
      a.endY = (a.endY ?? 0) + dy
    }
  }

  syncToCurrentMap()
  movePanelVisible.value = false
}

// ======== 节点创建与边分割 ========
const EPS_PT = 1e-6

const findExistingNodeAt = (x, y, eps = EPS_PT) => {
  for (const n of nodes.value) {
    if (Math.hypot(n.x - x, n.y - y) <= eps) return n
  }
  return null
}

const createNodeAt = (x, y, namePrefix = 'N') => {
  const newId = getNextNodeId()
  const newNode = { id: newId, x, y, code: generateUniqueNodeCode(namePrefix), orientation: null, allowRotate: false, maxCoordinateOffset: 0.5, maxAngleDeviation: 15, maxSpeed: 1.2 }
  ensureNodeDefaults(newNode)
  nodes.value.push(newNode)
  return newNode
}

const ensureNodeAtPointAndSplitEdge = (edge, x, y) => {
  // 若切点接近端点，直接复用端点
  const src = getNodeByCode(edge.sourceCode)
  const tgt = getNodeByCode(edge.targetCode)
  if (!src || !tgt) return null
  if (Math.hypot(src.x - x, src.y - y) <= EPS_PT) return src.code
  if (Math.hypot(tgt.x - x, tgt.y - y) <= EPS_PT) return tgt.code

  // 若已存在同位置节点，复用之；否则创建
  const existing = findExistingNodeAt(x, y)
  const node = existing ?? createNodeAt(x, y)

  // 分割该边（若点在线段上且不在端点）
  if (isPointOnLineSegment({ x: src.x, y: src.y }, { x: tgt.x, y: tgt.y }, { x, y }, 1e-4)) {
    splitEdgeAtInternalPoint(edge, node.code)
  }
  return node.code
}

const cloneEdgeAttrs = (edge) => {
  const out = {}
  if ('name' in edge) out.name = edge.name
  if ('isReverse' in edge) out.isReverse = edge.isReverse
  return out
}

const splitEdgeAtInternalPoint = (edge, newNodeCode) => {
  // 防御：确认newNode落在该边内部（非端点）
  if (newNodeCode === edge.sourceCode || newNodeCode === edge.targetCode) return
  const src = getNodeByCode(edge.sourceCode)
  const tgt = getNodeByCode(edge.targetCode)
  const mid = getNodeByCode(newNodeCode)
  if (!src || !tgt || !mid) return
  // 再次确认在线段上
  if (!isPointOnLineSegment({ x: src.x, y: src.y }, { x: tgt.x, y: tgt.y }, { x: mid.x, y: mid.y }, 1e-4)) return

  // 移除原边，添加两条新边
  const idx = edges.value.findIndex(e => e.id === edge.id)
  if (idx === -1) return
  const attrs = cloneEdgeAttrs(edge)
  const newEdge1 = { 
    id: getNextEdgeId(), 
    sourceCode: edge.sourceCode, 
    targetCode: newNodeCode, 
    code: formatEdgeCode(edge.sourceCode, newNodeCode, !!attrs.isReverse),
    ...attrs 
  }
  const newEdge2 = { 
    id: getNextEdgeId(), 
    sourceCode: newNodeCode, 
    targetCode: edge.targetCode, 
    code: formatEdgeCode(newNodeCode, edge.targetCode, !!attrs.isReverse),
    ...attrs 
  }
  // 替换
  edges.value.splice(idx, 1)
  if (!edgeExists(newEdge1.sourceCode, newEdge1.targetCode, !!newEdge1.isReverse) && !codeExists(newEdge1.code)) {
    edges.value.push(newEdge1)
  }
  if (!edgeExists(newEdge2.sourceCode, newEdge2.targetCode, !!newEdge2.isReverse) && !codeExists(newEdge2.code)) {
    edges.value.push(newEdge2)
  }
}

// 在当前边集合中查找包含点(x,y)的直线边
const findStraightEdgeContainingPoint = (x, y, eps = 1e-4) => {
  for (const e of (edges.value || [])) {
    if (e.curve) continue
    const s = getNodeByCode(e.sourceCode)
    const t = getNodeByCode(e.targetCode)
    if (!s || !t) continue
    if (isPointOnLineSegment({ x: s.x, y: s.y }, { x: t.x, y: t.y }, { x, y }, eps)) {
      // 排除端点
      if (Math.hypot(s.x - x, s.y - y) <= eps) continue
      if (Math.hypot(t.x - x, t.y - y) <= eps) continue
      return e
    }
  }
  return null
}

// 在任意包含该点的直线边处确保节点存在，并进行分割，返回节点code
const ensureNodeAtPointAndSplitAnyEdge = (x, y) => {
  const existing = findExistingNodeAt(x, y)
  if (existing) return existing.code
  const node = createNodeAt(x, y)
  const host = findStraightEdgeContainingPoint(x, y)
  if (host) splitEdgeAtInternalPoint(host, node.code)
  return node.code
}

// 近似判断是否已存在相同几何弧（起止点+方向）
const arcGeometryExists = (sx, sy, ex, ey, isRev, eps = 1e-6) => {
  for (const a of (edges.value || []).filter(e => e.curve)) {
    const ok = Math.abs(a.startX - sx) <= eps && Math.abs(a.startY - sy) <= eps &&
               Math.abs(a.endX - ex) <= eps && Math.abs(a.endY - ey) <= eps &&
               (!!a.isReverse === !!isRev)
    if (ok) return true
  }
  return false
}

// 计算两条边在四个象限（方向组合）下、指定半径的所有可行切线圆弧
const calculateArcsAllQuadrantsBetweenEdges = (edge1, edge2, radius, idStart) => {
  const n11 = getNodeByCode(edge1.sourceCode)
  const n12 = getNodeByCode(edge1.targetCode)
  const n21 = getNodeByCode(edge2.sourceCode)
  const n22 = getNodeByCode(edge2.targetCode)
  if (!n11 || !n12 || !n21 || !n22) return []

  const p1a = { x: n11.x, y: n11.y }
  const p1b = { x: n12.x, y: n12.y }
  const p2a = { x: n21.x, y: n21.y }
  const p2b = { x: n22.x, y: n22.y }

  const ip = findLineIntersectionInfinite(p1a, p1b, p2a, p2b)
  if (!ip) return []

  const len1 = Math.hypot(p1b.x - p1a.x, p1b.y - p1a.y)
  const len2 = Math.hypot(p2b.x - p2a.x, p2b.y - p2a.y)
  if (len1 < 1e-12 || len2 < 1e-12) return []

  const u1Base = { x: (p1b.x - p1a.x) / len1, y: (p1b.y - p1a.y) / len1 }
  const u2Base = { x: (p2b.x - p2a.x) / len2, y: (p2b.y - p2a.y) / len2 }

  const variants = []
  const flips = [1, -1]
  for (const f1 of flips) {
    for (const f2 of flips) {
      const u1 = { x: u1Base.x * f1, y: u1Base.y * f1 }
      const u2 = { x: u2Base.x * f2, y: u2Base.y * f2 }
      const dotRaw = u1.x * u2.x + u1.y * u2.y
      const dot = Math.max(-1, Math.min(1, dotRaw))
      const theta = Math.acos(dot)
      if (!(theta > 1e-6 && theta < Math.PI - 1e-6)) continue
      const sinHalf = Math.sin(theta / 2)
      const cosHalf = Math.cos(theta / 2)
      if (Math.abs(sinHalf) < 1e-12) continue
      const d = radius * (cosHalf / sinHalf)
      // 最大可行d（基于各段在该方向上的可用正向长度）
      const proj = (p, u) => (p.x - ip.x) * u.x + (p.y - ip.y) * u.y
      const sPosMax1 = Math.max(0, Math.max(proj(p1a, u1), proj(p1b, u1)))
      const sPosMax2 = Math.max(0, Math.max(proj(p2a, u2), proj(p2b, u2)))
      if (!(d > 0 && d <= sPosMax1 + 1e-8 && d <= sPosMax2 + 1e-8)) continue
      // 角平分线方向
      const bis = { x: u1.x + u2.x, y: u1.y + u2.y }
      const bisLen = Math.hypot(bis.x, bis.y)
      if (bisLen < 1e-12) continue
      const bisUnit = { x: bis.x / bisLen, y: bis.y / bisLen }
      const h = radius / sinHalf
      const centerX = ip.x + bisUnit.x * h
      const centerY = ip.y + bisUnit.y * h
      const startPoint = { x: ip.x + u1.x * d, y: ip.y + u1.y * d }
      const endPoint = { x: ip.x + u2.x * d, y: ip.y + u2.y * d }
      if (!isPointOnLineSegment(p1a, p1b, startPoint, 1e-6)) continue
      if (!isPointOnLineSegment(p2a, p2b, endPoint, 1e-6)) continue
      variants.push({
        id: idStart,
        radius,
        centerX,
        centerY,
        startX: startPoint.x,
        startY: startPoint.y,
        endX: endPoint.x,
        endY: endPoint.y
      })
    }
  }
  return variants
}

const generateBatchTangentialArcs = (radius) => {
  pushHistorySnapshot()
  const ids = new Set(selectedEdgeIds.value)
  if (selectedEdgeId.value != null) ids.add(selectedEdgeId.value)
  const list = Array.from(ids)
    .map(id => edges.value.find(e => e.id === id))
    .filter(e => e && !e.curve)
  if (list.length < 2) return

  // 逐对尝试四象限圆弧
  for (let i = 0; i < list.length; i++) {
    for (let j = i + 1; j < list.length; j++) {
      const e1 = list[i]
      const e2 = list[j]
      const arcs = calculateArcsAllQuadrantsBetweenEdges(e1, e2, radius, getNextEdgeId())
      for (const a of arcs) {
        // 去重（几何级）
        if (arcGeometryExists(a.startX, a.startY, a.endX, a.endY, false)) continue
        // 在切点创建/复用节点，并分割承载的直线边
        const startCode = ensureNodeAtPointAndSplitAnyEdge(a.startX, a.startY)
        const endCode = ensureNodeAtPointAndSplitAnyEdge(a.endX, a.endY)
        // 生成业务编码并落库
        const code = formatEdgeCode(startCode, endCode, false)
        if (codeExists(code)) continue
        edges.value.push({
          id: getNextEdgeId(),
          curve: true,
          isReverse: false,
          radius: a.radius,
          centerX: a.centerX,
          centerY: a.centerY,
          startX: a.startX,
          startY: a.startY,
          endX: a.endX,
          endY: a.endY,
          sourceCode: startCode,
          targetCode: endCode,
          code,
          name: ''
        })
      }
    }
  }
  syncToCurrentMap()
}

// ======== 选中边批量生成四向连线（去重） ========
const ensureEdgeDefaultsForGen = (edge) => {
  if (edge == null) return
  if (edge.isReverse === undefined) edge.isReverse = false
  if (edge.isArc === undefined) edge.isArc = false
}

const edgeExists = (sourceCode, targetCode, isReverse) => {
  return edges.value.some(e => e.sourceCode === sourceCode && e.targetCode === targetCode && !!e.isReverse === !!isReverse && !e.curve)
}

const codeExists = (code) => {
  if (!code) return false
  return (edges.value || []).some(e => e.code === code)
}

const generateFourVariantsForSelectedEdges = () => {
  pushHistorySnapshot()
  const ids = new Set(selectedEdgeIds.value)
  if (selectedEdgeId.value != null) ids.add(selectedEdgeId.value)
  const arcIds = new Set(selectedArcIds.value)
  if (selectedArcId.value != null) arcIds.add(selectedArcId.value)
  if (ids.size === 0 && arcIds.size === 0) return
  for (const id of ids) {
    const base = edges.value.find(e => e.id === id)
    if (!base) continue
    // 若是弧线，跳过直线四向生成
    if (base.curve) continue
    ensureEdgeDefaultsForGen(base)
    const a = base.sourceCode
    const b = base.targetCode
    const nodeA = getNodeByCode(a)
    const nodeB = getNodeByCode(b)
    const nameAB = `${nodeA?.code ?? a}-${nodeB?.code ?? b}`
    const nameBA = `${nodeB?.code ?? b}-${nodeA?.code ?? a}`
    const variants = [
      { s: a, t: b, r: true,  name: `${nameAB} 倒车` },
      { s: a, t: b, r: false, name: `${nameAB} 非倒车` },
      { s: b, t: a, r: true,  name: `${nameBA} 倒车` },
      { s: b, t: a, r: false, name: `${nameBA} 非倒车` },
    ]
    for (const v of variants) {
      const edgeCode = formatEdgeCode(v.s, v.t, v.r)
      if (edgeExists(v.s, v.t, v.r) || codeExists(edgeCode)) continue
      const e = { id: getNextEdgeId(), sourceCode: v.s, targetCode: v.t, code: edgeCode, isReverse: v.r, curve: false, isArc: false, name: v.name }
      edges.value.push(e)
    }
  }
  // 扩展：对选中的弧线，生成四向圆弧（避免重复）
  const eps = 1e-6
  const floatsEq = (a, b) => Math.abs(a - b) <= eps
  const arcExists = (sx, sy, ex, ey, isRev) => {
    return (edges.value || []).some(ar => ar.curve &&
      floatsEq(ar.startX, sx) && floatsEq(ar.startY, sy) &&
      floatsEq(ar.endX, ex) && floatsEq(ar.endY, ey) &&
      (!!ar.isReverse === !!isRev)
    )
  }
  const reverseArcGeom = (a) => ({
    radius: a.radius,
    centerX: a.centerX,
    centerY: a.centerY,
    startX: a.endX,
    startY: a.endY,
    endX: a.startX,
    endY: a.startY,
  })
  for (const aid of arcIds) {
    const a = (edges.value || []).find(x => x.id === aid && x.curve)
    if (!a) continue
    // 命名：尽量用端点节点标签
    const sNode = findExistingNodeAt(a.startX, a.startY, 1e-4)
    const eNode = findExistingNodeAt(a.endX, a.endY, 1e-4)
    const sName = sNode?.code ?? 'S'
    const eName = eNode?.code ?? 'E'
    const nameAB = `${sName}-${eName}`
    const nameBA = `${eName}-${sName}`
    // AB: 倒车/非倒车
    const abFwd = { radius: a.radius, centerX: a.centerX, centerY: a.centerY, startX: a.startX, startY: a.startY, endX: a.endX, endY: a.endY, sourceCode: sNode?.code ?? null, targetCode: eNode?.code ?? null, code: formatEdgeCode(sName, eName, false), isReverse: false, name: `${nameAB} 非倒车` }
    const abRev = { ...abFwd, isReverse: true, code: formatEdgeCode(sName, eName, true), name: `${nameAB} 倒车` }
    // BA: 通过几何反向得到
    const revGeom = reverseArcGeom(a)
    const baFwd = { ...revGeom, sourceCode: eNode?.code ?? null, targetCode: sNode?.code ?? null, code: formatEdgeCode(eName, sName, false), isReverse: false, name: `${nameBA} 非倒车` }
    const baRev = { ...revGeom, sourceCode: eNode?.code ?? null, targetCode: sNode?.code ?? null, code: formatEdgeCode(eName, sName, true), isReverse: true, name: `${nameBA} 倒车` }
    const list = [abRev, abFwd, baRev, baFwd]
    for (const ar of list) {
      if (codeExists(ar.code)) continue
      if (!arcExists(ar.startX, ar.startY, ar.endX, ar.endY, ar.isReverse)) {
        edges.value.push({ ...ar, id: getNextEdgeId(), curve: true })
      }
    }
  }
  syncToCurrentMap()
}
</script>

<style scoped>
.map-editor-wrapper {
  height: calc(100vh - 135px);
  width: 100%;
  overflow: hidden;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.map-editor-card {
  height: 100%;
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0;
}

.map-editor-card :deep(.va-card__content) {
  padding: 0px 20px 20px 20px;
  height: 100%;
}

.map-editor-content {
  display: flex;
  height: 100%;
  gap: 0;
  padding: 0;
  overflow: hidden;
}

.config-panel-wrapper {
  width: 15%;
  height: 100%;
  border-right: 1px solid var(--va-background-border);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.config-panel-inner {
  padding: 1rem;
  overflow-y: auto;
  height: 100%;
}

.panel-title {
  color: var(--va-primary);
  margin-bottom: 1rem;
  font-weight: 600;
}

.panel-actions-top {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--va-background-border);
}

.config-form {
  display: flex;
  flex-direction: column;
}

.preview-panel-wrapper {
  width: 85%;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.map-preview {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 1rem;
  gap: 1rem;
}

.toolbar-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.toolbar-group {
  flex-shrink: 0;
}

.toolbar-input {
  display: inline-flex;
}

.toolbar-input-inline {
  display: inline-flex;
}

.toolbar-group.d-flex {
  gap: 0.5rem;
}

.align-items-center {
  align-items: center;
}

.stats-text {
  color: var(--va-text-secondary);
  font-size: 0.875rem;
  margin-left: auto;
}

.topo-canvas {
  flex: 1;
  display: flex;
  min-height: 0;
  background: #ffffff;
  border: 1px solid var(--va-background-border);
  border-radius: 4px;
  position: relative;
  user-select: none;
}

.topo-canvas svg {
  display: block;
  width: 100%;
  height: 100%;
}

.cursor-default { cursor: default; }
.cursor-crosshair { cursor: crosshair; }
.cursor-grab { cursor: grab; }
.cursor-alias { cursor: alias; }

.snap-guide-line {
  stroke: var(--va-primary);
  stroke-width: 20;
  stroke-dasharray: 20 15;
  pointer-events: none;
}

.marquee-rect {
  fill: transparent;
  stroke: var(--va-primary);
  stroke-width: 1;
  shape-rendering: crispEdges;
}

.mouse-hint {
  position: absolute;
  background: rgba(33, 37, 41, 0.9);
  color: #fff;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  pointer-events: none;
  z-index: 10;
  white-space: nowrap;
}

.floating-panel {
  position: absolute;
  right: 16px;
  top: 16px;
  width: 280px;
  z-index: 20;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.floating-panel-enhanced {
  width: 320px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15), 0 2px 8px rgba(0, 0, 0, 0.1);
  border-radius: 12px;
  overflow: hidden;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.panel-title-enhanced {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 20px;
  background: linear-gradient(135deg, var(--va-primary) 0%, var(--va-primary-dark) 100%);
  color: white;
  font-weight: 600;
  font-size: 16px;
  margin: 0;
}

.panel-icon {
  color: white;
  opacity: 0.9;
}

.panel-content-enhanced {
  padding: 50px 50px;
}

.panel-content-enhanced .va-chip {
  display: inline-flex;
}

.text-secondary {
  color: var(--va-text-secondary);
  font-size: 0.875rem;
}

.d-flex {
  display: flex;
}

.justify-content-end {
  justify-content: flex-end;
}

.gap-2 {
  gap: 0.5rem;
}

.mb-2 {
  margin-bottom: 0.5rem;
}

.mb-3 {
  margin-bottom: 1rem;
}

.bg-settings-content {
  padding: 0.5rem 0;
}

.small {
  font-size: 0.875rem;
}

.loading-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
}

.loading-text {
  color: var(--va-text-primary);
  font-size: 0.875rem;
  text-align: center;
}
</style>

<style>
html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}
.no-scroll {
  overflow: hidden !important;
}
</style>