<template>
  <div>
    <el-card class="box-card" shadow="always">
      <div slot="header" class="clearfix">
        <span>{{ title }}</span>
        <el-button-group style="float: right;">
          <el-button size="mini" icon="el-icon-s-data" round @click="dataPreview">数据预览</el-button>
          <el-button size="mini" icon="el-icon-back" round @click="showCard">返回</el-button>
        </el-button-group>
      </div>
      <div :style="classCardbody">
        <el-form ref="form" :model="form" label-width="80px" disabled>
          <el-form-item label="数据源" prop="sourceId">
            <el-select v-model="form.sourceId" placeholder="请选择数据源">
              <el-option
                v-for="source in sourceOptions"
                :key="source.id"
                :label="source.sourceName"
                :value="source.id"
                :disabled="source.status === '0'"
              ></el-option>
            </el-select>
          </el-form-item>
          <el-form-item label="数据集名称" prop="setName">
            <el-input v-model="form.setName" placeholder="请输入数据集名称" />
          </el-form-item>
          <el-divider content-position="left">数据集</el-divider>
          <el-row>
            <el-col :span="24" style="padding: 0 20px;">
              <sql-editor
                ref="sqleditor"
                :value="form.setSql"
                :readOnly="true"
                style="height: 300px;"
              ></sql-editor>
            </el-col>
          </el-row>
          <el-divider content-position="left">数据模型定义</el-divider>
          <el-row style="height: 300px;padding: 0 20px;">
            <el-col :span="12" style="border: 1px dashed #999;height: 100%;">
              <div class="tag-group" >
                <el-tag v-for="(item, index) in columnList" :key="index" class="draggable-tag">
                  {{ item.col }}
                </el-tag>
              </div>
            </el-col>
            <el-col :span="12" style="box-shadow: 0 0 1px 1px #ccc;height: 100%;">
              <el-row>
                <el-divider content-position="left">维度列</el-divider>
                <el-col>
                  <div style="height: 90px; border: 1px dashed #999; margin: 0 10px;">
                    <el-tag v-for="(item, index) in dimensionList" :key="index" class="draggable-item">
                      {{ item.alias ? item.alias + '(' + item.col + ')' : item.col }}
                    </el-tag>
                  </div>
                </el-col>
              </el-row>
              <el-row>
                <el-divider content-position="left">指标列</el-divider>
                <el-col>
                  <div style="height: 90px; border: 1px dashed #999; margin: 0 10px;">
                    <el-tag v-for="(item, index) in measureList" :key="index" class="draggable-item">
                      {{ item.alias ? item.alias + '(' + item.col + ')' : item.col }}
                    </el-tag>
                  </div>
                </el-col>
              </el-row>
            </el-col>
          </el-row>
          <el-form-item label="状态" prop="status">
            <el-radio-group v-model="form.status">
              <el-radio
                v-for="dict in statusOptions"
                :key="dict.id"
                :label="dict.itemText"
              >{{dict.itemValue}}</el-radio>
            </el-radio-group>
          </el-form-item>
          <el-form-item label="备注" prop="remark">
            <el-input v-model="form.remark" type="textarea" placeholder="请输入内容" />
          </el-form-item>
        </el-form>
        <el-drawer
          :visible.sync="drawer"
          direction="btt"
          :with-header="false">
          <el-table :data="previewData.dataList" stripe border
                    :max-height="200"
                    style="width: 100%; margin: 15px 0;">
            <el-table-column label="序号" width="55" align="center">
              <template slot-scope="scope">
                <span>{{ scope.$index + 1 }}</span>
              </template>
            </el-table-column>
            <template v-for="(column, index) in previewData.columnList">
              <el-table-column
                :prop="column"
                :label="column"
                :key="index"
                align="center"
                show-overflow-tooltip
              />
            </template>
          </el-table>
          <el-pagination
            :page-sizes="[10, 20, 50, 100]"
            layout="total, sizes, prev, pager, next, jumper"
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page.sync="previewData.pageNum"
            :page-size.sync="previewData.pageSize"
            :total="previewData.dataTotal"
          ></el-pagination>
        </el-drawer>
      </div>
    </el-card>
  </div>
</template>

<script>
import { getDataSet } from '@/api/visual/dataset'
import { listDataSource, queryByPage } from '@/api/metadata/datasource'
import SqlEditor from '@/components/SqlEditor'

export default {
  name: 'DataSetDetail',
  components: {
    SqlEditor
  },
  props: {
    data: {
      type: Object,
      default: function () {
        return {}
      }
    }
  },
  data () {
    return {
      classCardbody: {
        overflow: 'auto',
        height: document.body.offsetHeight - 240 + 'px'
      },
      title: '数据集详情',
      // 展示切换
      showOptions: {
        data: {},
        showList: true,
        showAdd: false,
        showEdit: false,
        showDetail: false
      },
      // 表单参数
      form: {},
      // 状态数据字典
      statusOptions: [],
      // 数据源数据字典
      sourceOptions: [],
      // 解析字段
      columns: [],
      columnList: [],
      dimensionList: [],
      measureList: [],
      drawer: false,
      previewData: {
        dataList: [],
        columnList: [],
        pageNum: 1,
        pageSize: 20,
        dataTotal: 0
      }
    }
  },
  created () {
    console.log('id:' + this.data.id)
    this.getDicts('sys_common_status').then(response => {
      if (response.success) {
        this.statusOptions = response.data
      }
    })
    this.getDataSourceList()
  },
  mounted () {
    this.getDataSet(this.data.id)
  },
  methods: {
    showCard () {
      this.$emit('showCard', this.showOptions)
    },
    getDataSourceList () {
      listDataSource().then(response => {
        if (response.success) {
          this.sourceOptions = response.data
        }
      })
    },
    /** 获取详情 */
    getDataSet: function (id) {
      getDataSet(id).then(response => {
        if (response.success) {
          this.form = response.data
          this.columns = this.form.schemaConfig.columns || []
          if (this.columns && this.columns.length > 0) {
            this.dimensionList = this.form.schemaConfig.dimensions || []
            this.measureList = this.form.schemaConfig.measures || []
            this.columnList = this.columns.filter(x => [...this.dimensionList, ...this.measureList].every(y => y.col !== x)).map(function (item) {
              let json = {}
              json.col = item
              json.alias = ''
              return json
            })
          }
          this.$refs.sqleditor.editor.setValue(this.form.setSql)
        }
      })
    },
    dataPreview () {
      if (!this.form.sourceId) {
        return
      }
      if (!this.form.setSql) {
        return
      }
      let data = {}
      data.dataSourceId = this.form.sourceId
      data.sql = this.form.setSql
      data.pageNum = this.previewData.pageNum
      data.pageSize = this.previewData.pageSize
      queryByPage(data).then(response => {
        if (response.success) {
          const { data } = response
          let dataList = data.data || []
          let columnList = []
          if (dataList.length > 0) {
            columnList = Object.keys(dataList[0])
          }
          this.previewData.dataList = dataList
          this.previewData.columnList = columnList
          this.previewData.dataTotal = data.total
          this.drawer = true
        }
      })
    },
    handleSizeChange (val) {
      this.previewData.pageNum = 1
      this.previewData.pageSize = val
      this.dataPreview()
    },
    handleCurrentChange (val) {
      this.previewData.pageNum = val
      this.dataPreview()
    }
  }
}
</script>

<style lang="scss" scoped>
.draggable-tag {
  margin: 10px;
  cursor: move;
}
.draggable-item {
  cursor: move;
  margin: 5px 5px;
  display: inline-block;
  border: 1px solid #ebecef;
  height: 32px;
  line-height: 30px;
  border-radius: 4px;
  .draggable-item-handle {
    background-color: #ecf5ff;
    border-color: #d9ecff;
    display: inline-block;
    height: 32px;
    padding: 0 10px;
    line-height: 30px;
    font-size: 12px;
    color: #409EFF;
    border-width: 1px;
    border-style: solid;
    box-sizing: border-box;
    white-space: nowrap;
    cursor: pointer;
    margin-left: -5px;
  }
}
</style>
