<template>
  <div>
    <el-input v-model="deptName" class="mb-20px" clearable placeholder="请输入资料分类名称">
      <template #prefix>
        <Icon icon="ep:search" />
      </template>
    </el-input>
  </div>
  <div ref="treeContainer" class="tree-container">
    <el-tree
      ref="treeRef"
      :data="fileList"
      :expand-on-click-node="false"
      :filter-node-method="filterNode"
      :props="defaultProps"
      default-expand-all
      highlight-current
      node-key="id"
      @node-click="handleNodeClick"
      @node-contextmenu="handleRightClick"
      style="height: 33em"
      draggable
      :allow-drop="allowDrop"
      @node-drop="handleNodeDrop"
      @node-drag-start="handleDragStart"
      @node-drag-over="handleDragOver"
      @node-drag-end="handleDragEnd"

    >
      <template #default="{ node}">
        <div style="display: flex; justify-content: space-between;align-items: center;width: 100%">
          <div>
            <el-icon style="vertical-align: middle"><Folder /></el-icon>    <!-- 文件夹图标 -->
            <span style="vertical-align: middle;margin-left: 3px">{{ node.data.name }}</span>
          </div>
          <div>
            <icon style="vertical-align: middle" @click="handleRightClick" icon="ep:edit" />
          </div>
        </div>
      </template>
    </el-tree>
    <div v-if="dragTip.visible" class="drag-tip" :style="dragTip.style">
      移动到 {{ dragTip.text }}
    </div>
  </div>
  <div v-show="menuVisible" ref="contextMenuRef" class="custom-menu" :style="{ left: menuX + 'px', top: menuY + 'px' }">
    <ul>
      <li style="border-bottom: 1px solid #ccc;" @click="handleMenuClick('add')">新增子节点</li>
      <li style="border-bottom: 1px solid #ccc;" @click="handleMenuClick('edit')">编辑节点</li>
      <li @click="handleMenuClick('delete')">删除节点</li>
      <li @click="handleMenuClick('copy')">复制</li>
    </ul>
  </div>

  <Dialog v-model="dialogVisible" :title="dialogTitle" style="width: 40em">
    <el-form
      ref="formRef"
      v-loading="formLoading"
      :model="formData"
      :rules="formRules"
      label-width="80px"
    >
      <el-form-item label="资料分类名称" prop="name" label-width="110px">
        <el-input v-model="formData.name" placeholder="请输入资料分类名称" />
      </el-form-item>
      <el-form-item label="显示排序" prop="sort" label-width="110px">
        <el-input-number v-model="formData.sort" :min="0" controls-position="right" />
      </el-form-item>
      <el-form-item label="备注" prop="remark" label-width="110px">
        <el-input
          v-model="formData.remark"
          maxlength="11"
          placeholder="请输入备注"
          type="textarea"
        />
      </el-form-item>
    </el-form>
    <template #footer>
      <el-button type="primary" @click="submitForm">确 定</el-button>
      <el-button @click="dialogVisible = false">取 消</el-button>
    </template>
  </Dialog>
</template>

<script lang="ts" setup>
import { ElTree, FormRules } from 'element-plus'
import * as FileClassifyApi from '@/api/pms/info'
import * as InfoClassifyApi from '@/api/pms/info'
import { defaultProps, handleTree } from '@/utils/tree'
import { CommonStatusEnum } from '@/utils/constants'
import {IotInfoClassifyApi} from "@/api/pms/info";
import { Document, Folder, Search } from '@element-plus/icons-vue'
const { t } = useI18n() // 国际化
const message = useMessage() // 消息弹窗
const dialogVisible = ref(false) // 弹窗的是否展示
const dialogTitle = ref('') // 弹窗的标题
const formRef = ref() // 搜索的表单
const openForm = (type: string, id?: number) => {
  formRef.value.open(type, id)
}
const handleDragStart = (node) => {
  highlightedNode.value = null;
  dragTip.value.visible = true;
};
const highlightedNode = ref(null);
const handleDragOver = (dragNode, targetNode, event) => {
  // 高亮目标节点
  highlightedNode.value = targetNode;

  // 更新提示位置和内容
  dragTip.value.text = targetNode.label;
  dragTip.value.style = {
    left: `${event.clientX + 15}px`,
    top: `${event.clientY}px`
  };
};
const handleDragEnd = () => {
  highlightedNode.value = null;
  dragTip.value.visible = false;
};
const dragTip = ref({
  visible: false,
  text: '',
  style: {}
});
const handleNodeDrop = async (draggingNode, dropNode, dropType, event) => {
  // 获取拖拽后的新父节点ID和目标位置
  const newParentId = dropNode.data.id;
  const targetIndex = dropNode.parent.childNodes.findIndex(n => n.data.id === dropNode.data.id);
  // 更新本地数据
  draggingNode.data.parentId = newParentId;
  console.log(JSON.stringify(draggingNode.data))
  await InfoClassifyApi.IotInfoClassifyApi.removeIotInfoClassify(draggingNode.data)
};
const allowDrop = (draggingNode, dropNode, type) => {
  // 禁止拖拽到非文件夹节点内部
  //if (dropNode.data.type === 'dept') return false;

  // 限制最大层级（如不超过3层）
  return true
};
// 动态高度计算
const treeContainer = ref(null);
const setHeight = () => {
  if (!treeContainer.value) return;
  const windowHeight = window.innerHeight;
  const containerTop = treeContainer.value.offsetTop;
  treeContainer.value.style.height = `${windowHeight *0.50}px`; // 60px 底部预留
};

onMounted(async () => {
  await getTree()
  setHeight();
  emits('success', fileList.value[0].id)
  window.addEventListener('resize', setHeight);
});

onUnmounted(() => {
  window.removeEventListener('resize', setHeight);
});

const formLoading = ref(false) // 表单的加载中：1）修改时的数据加载；2）提交的按钮禁用
const formType = ref('') // 表单的类型：create - 新增；update - 修改
const formData = ref({
  id: undefined,
  parentId: undefined,
  deviceId: undefined,
  name: undefined,
  sort: undefined,
  status: CommonStatusEnum.ENABLE,
  remark: undefined
})
const formRules = reactive<FormRules>({
  name: [{ required: true, message: '资料分类名称不能为空', trigger: 'blur' }],
  sort: [{ required: true, message: '显示排序不能为空', trigger: 'blur' }],
  status: [{ required: true, message: '状态不能为空', trigger: 'blur' }]
})
const submitForm = async () => {
  // 校验表单
  if (!formRef) return
  const valid = await formRef.value.validate()
  if (!valid) return
  // 提交请求
  formLoading.value = true
  try {
    const data = formData.value as unknown as InfoClassifyApi.IotInfoClassifyVO
    if (formType.value === 'create') {
      data.parentId = nodeInfo.value.id
      data.deviceId = props.deviceId
      await InfoClassifyApi.IotInfoClassifyApi.createIotInfoClassify(data)
      message.success(t('common.createSuccess'))
    } else {
      await InfoClassifyApi.IotInfoClassifyApi.updateIotInfoClassify(data)
      message.success(t('common.updateSuccess'))
    }
    dialogVisible.value = false

  } finally {
    await getTree()
    formLoading.value = false
  }
}

/** 重置表单 */
const resetForm = () => {
  formData.value = {
    id: undefined,
    title: '',
    parentId: undefined,
    name: undefined,
    sort: undefined,
    leaderUserId: undefined,
    phone: undefined,
    email: undefined,
    status: CommonStatusEnum.ENABLE
  }
  formRef.value?.resetFields()
}
defineOptions({ name: 'DeviceFileTree' })
const props = defineProps({
  deviceId: { type: Number, required: true }
})
const deptName = ref('')
const nodeInfo = ref({})
const fileList = ref<Tree[]>([]) // 树形结构
const treeRef = ref<InstanceType<typeof ElTree>>()
const menuVisible = ref(false)
const menuX = ref(0)
const menuY = ref(0)
const contextMenuRef = ref(null) // 弹窗DOM引用
let selectedNode = null
const handleRightClick = (event, node, data) => {
  nodeInfo.value = node;
  console.log(JSON.stringify(nodeInfo.value))
  event.preventDefault()
  menuX.value = event.clientX
  menuY.value = event.clientY
  selectedNode = data
  menuVisible.value = true
}

const handleMenuClick = async (action) => {
  switch (action) {
    case 'add':
      dialogVisible.value = true
      dialogTitle.value = '新增资料分类'
      formType.value = 'create'
      resetForm()
      break
    case 'edit':
      resetForm()
      dialogVisible.value = true
      dialogTitle.value = '编辑资料分类'
      formType.value = 'update'
      formData.value = nodeInfo.value
      console.log(JSON.stringify(formData.value))
      break
    case 'delete':
      // 删除的二次确认
      await message.delConfirm()
      // 发起删除
      await IotInfoClassifyApi.deleteIotInfoClassify(nodeInfo.value.id)
      message.success(t('common.delSuccess'))
      // 刷新列表
      await getTree()
      break
  }
  menuVisible.value = false
}
/** 获得部门树 */
const getTree = async () => {
  const res = await FileClassifyApi.IotInfoClassifyApi.getSimpleInfotClassifyList(props.deviceId)
  fileList.value = []
  fileList.value.push(...handleTree(res))
}

/** 基于名字过滤 */
const filterNode = (name: string, data: Tree) => {
  if (!name) return true
  return data.name.includes(name)
}

/** 处理部门被点击 */
const handleNodeClick = async (row: { [key: string]: any }) => {
  console.log(row)
  emits('node-click', row)
}
const emits = defineEmits(['node-click','success'])

/** 监听deptName */
watch(deptName, (val) => {
  treeRef.value!.filter(val)
})
const handleClickOutside = (event) => {
  if (
    menuVisible.value &&
    contextMenuRef.value &&
    !contextMenuRef.value.contains(event.target)
  ) {
    menuVisible.value = false
  }
}
watch(menuVisible, (visible) => {
  if (visible) {
    document.addEventListener('click', handleClickOutside)
  } else {
    document.removeEventListener('click', handleClickOutside)
  }
})
onBeforeUnmount(() => {
  document.removeEventListener('click', handleClickOutside)
})
/** 初始化 */
// onMounted(async () => {
//   await getTree()
// })
</script>
<style lang="scss" scoped>
.custom-menu {
  position: fixed;
  background: white;
  border: 1px solid #ccc;
  box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.1);
  z-index: 1000;
}
.custom-menu ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.custom-menu li {
  padding: 8px 20px;
  cursor: pointer;
  font-size: 14px;
  margin: 5px
}
.custom-menu li:hover {
  background: #77a0ec;
}
.tree-container {
  overflow-y: auto;
  min-width: 100%;
  border: 1px solid #e4e7ed;
  border-radius: 4px;
}
/* 自定义滚动条（可选） */
.tree-container::-webkit-scrollbar {
  width: 6px;
}
.tree-container::-webkit-scrollbar-thumb {
  background: #c0c4cc;
  border-radius: 3px;
}
.highlight {
  background-color: #f0f9ff;
  color: #409eff;
  padding: 2px 5px;
  border-radius: 3px;
}

/* 拖拽提示框样式 */
.drag-tip {
  position: fixed;
  background: #fff;
  border: 1px solid #409eff;
  padding: 5px 10px;
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  z-index: 9999;
}

/* 调整拖拽指示线样式 */
:deep(.el-tree-node__content) .el-tree-node__expand-icon {
  position: relative;
}

:deep(.el-tree-node__drop-indicator) {
  background-color: #409eff;
  height: 2px;
}

/* 禁止拖拽到内部时的缩进 */
:deep(.is-drop-inner) .el-tree-node__drop-indicator {
  background-color: #409eff;
  height: 100%;
  width: 4px;
  left: -8px !important;
}
</style>
