<template xmlns:el-col="http://www.w3.org/1999/html">
  <el-col>
    <el-col>
      <el-row class="title-css">
        <span class="title-text">
          {{ $t('commons.datasource') }}
        </span>
        <el-button icon="el-icon-plus" type="text" size="mini" style="float: right;" @click="addFolder" />

      </el-row>
      <el-divider />
      <el-row>
        <el-form>
          <el-form-item class="form-item">
            <el-input
              v-model="key"
              size="mini"
              :placeholder="$t('chart.search')"
              prefix-icon="el-icon-search"
              clearable
            />
          </el-form-item>
        </el-form>
      </el-row>

      <el-col class="custom-tree-container">
        <div class="block">
          <el-tree
            ref="myDsTree"
            :default-expanded-keys="expandedArray"
            :data="tData"
            node-key="id"
            default-expand-all
            :expand-on-click-node="true"
            :filter-node-method="filterNode"
            @node-click="nodeClick"
          >
            <span slot-scope="{ node, data }" class="custom-tree-node-list father">
              <span style="display: flex;flex: 1;width: 0;">
                <span v-if="data.type !== 'folder'">
                  <svg-icon icon-class="datasource" class="ds-icon-scene" />
                </span>
                <span v-if="data.type === 'folder'">
                  <i class="el-icon-folder" />
                </span>
                <span style="margin-left: 6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;">{{ data.name }}</span>
              </span>
              <span class="child">
                <span v-if="data.type ==='folder'" @click.stop>
                  <span class="el-dropdown-link">
                    <el-button
                      icon="el-icon-plus"
                      type="text"
                      size="small"
                      @click="addFolderWithType(data)"
                    />
                  </span>

                </span>
                <span v-if="data.type !=='folder'" style="margin-left: 12px;" @click.stop>
                  <span class="el-dropdown-link">
                    <el-button
                      icon="el-icon-delete"
                      type="text"
                      size="small"
                      @click="_handleDelete(data)"
                    />
                  </span>
                  <!-- <el-dropdown trigger="click" size="small" @command="clickFileMore">
                    <span class="el-dropdown-link">
                      <el-button
                        icon="el-icon-more"
                        type="text"
                        size="small"
                      />
                    </span>
                    <el-dropdown-menu slot="dropdown">
                      <el-dropdown-item icon="el-icon-edit" :command="beforeClickFile('edit',data,node)">
                        {{ $t('panel.edit') }}
                      </el-dropdown-item>

                      <el-dropdown-item icon="el-icon-delete" :command="beforeClickFile('delete',data,node)">
                        {{ $t('panel.delete') }}
                      </el-dropdown-item>
                    </el-dropdown-menu>
                  </el-dropdown> -->
                </span>
              </span>
            </span>
          </el-tree>
        </div>
      </el-col>
    </el-col>
  </el-col>
</template>
<script>
import { listDatasource, delDs } from '@/api/system/datasource'
export default {
  name: 'DsTree',
  data() {
    return {
      expandedArray: [],
      tData: [],
      showSearchInput: false,
      key: ''
    }
  },
  watch: {
    key(val) {
      this.$refs.myDsTree.filter(val)
    }
  },
  mounted() {
    this.queryTreeDatas()
  },
  methods: {
    filterNode(value, data) {
      if (!value) return true
      return data.name.indexOf(value) !== -1
    },
    showSearchWidget() {
      this.showSearchInput = true
    },
    closeSearchWidget() {
      this.key = ''
      this.showSearchInput = false
    },
    queryTreeDatas() {
      listDatasource().then(res => {
        this.tData = this.buildTree(res.data)
      })
    },
    buildTree(array) {
      const types = {}
      const newArr = []
      for (let index = 0; index < array.length; index++) {
        const element = array[index]
        if (!(element.type in types)) {
          types[element.type] = []
          // newArr.push(...element, ...{ children: types[element.type] })
          newArr.push({ id: element.type, name: element.type, type: 'folder', children: types[element.type] })
        }
        types[element.type].push(element)
        // newArr.children.push({ id: element.id, label: element.name })
      }
      return newArr
    },

    addFolder() {
      this.switchMain('DsForm')
    },
    addFolderWithType(data) {
      this.switchMain('DsForm', { type: data.id })
    },
    nodeClick(node, data) {
      if (node.type === 'folder') return
      this.showInfo(data)
    },

    clickFileMore(param) {
      const { optType, data } = param
      switch (optType) {
        case 'edit':
          this.edit(data)
          break
        case 'delete':
          this._handleDelete(data)
          break
        default:
          break
      }
    },
    beforeClickFile(optType, data, node) {
      return { optType, data, node }
    },
    edit(row) {
      this.switchMain('DsForm', row)
    },
    showInfo(row) {
      const param = { ...row.data, ...{ showModel: 'show' }}
      this.switchMain('DsForm', param)
    },
    _handleDelete(datasource) {
      this.$confirm(this.$t('datasource.delete_warning'), '', {
        confirmButtonText: this.$t('commons.confirm'),
        cancelButtonText: this.$t('commons.cancel'),
        type: 'warning'
      }).then(() => {
        delDs(datasource.id).then(res => {
          this.$success(this.$t('commons.delete_success'))
          this.queryTreeDatas()
        })
      }).catch(() => {
        this.$message({
          type: 'info',
          message: this.$t('commons.delete_cancelled')
        })
      })
    },
    switchMain(component, componentParam) {
      this.$emit('switch-main', {
        component,
        componentParam
      })
    }
  }
}
</script>
<style lang="scss" scoped>
  .el-divider--horizontal {
    margin: 12px 0
  }

  .search-input {
    padding: 12px 0;
  }

  .custom-tree-container{
    margin-top: 10px;
  }

  .custom-tree-node {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 14px;
    padding-right:8px;
  }

  .custom-tree-node-list {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 14px;
    padding:0 8px;
  }

  .tree-list>>>.el-tree-node__expand-icon.is-leaf{
    display: none;
  }

  .custom-position {
    flex: 1;
    display: flex;
    align-items: center;
    font-size: 14px;
    flex-flow: row nowrap;
  }

  .form-item {
    margin-bottom: 0;
  }

  .title-css {
    height: 26px;
  }

  .title-text {
    line-height: 26px;
  }

  .dialog-css >>> .el-dialog__header {
    padding: 20px 20px 0;
  }

  .dialog-css >>> .el-dialog__body {
    padding: 10px 20px 20px;
  }

  .form-item>>>.el-form-item__label{
    font-size: 12px;
  }

  .scene-title{
    width: 100%;
    display: flex;
  }
  .scene-title-name{
    width: 100%;
    overflow: hidden;
    display: inline-block;
    white-space: nowrap;
    text-overflow: ellipsis;
  }
  .father .child {
    display: none;
  }
  .father:hover .child {
    display: inline;
  }
</style>
