import {
  getDomResizeObserverCompKey,
  getFixedTotalWidthByColumnKey,
  clsName,
} from '../util/index.js'
import { getValByUnit } from '../../../src/utils/index.js'
import {
  COMPS_NAME,
  COLUMN_TYPES,
  EXPAND_TRIGGER_TYPES,
} from '../util/constant'
// import eventCenter from '@P/events/event-center'
import VueDomResizeObserver from '@P/src/components/resize-observer/index.js'
import BodyTr from './body-tr.jsx'
import BodyTrScrolling from './body-tr-scrolling.jsx'
import ExpandTr from './expand-tr.jsx'
import { GLOBAL_EVENT } from '@P/events/global-events.js'
import { defineComponent } from 'vue'
export default defineComponent({
  name: COMPS_NAME.FAN_TABLE_BODY,
  components: {
    BodyTr
  },
  inject: ['eventCenter'],
  props: {
    tableViewportWidth: {
      type: Number,
      default: 0,
    },
    columnsOptionResetTime: {
      type: Number,
      default: 0,
    },
    colgroups: {
      type: Array,
      required: true,
    },
    actualRenderTableData: {
      type: Array,
      required: true,
    },
    hasFixedColumn: {
      type: Boolean,
      default: false,
    },
    allRowKeys: {
      type: Array,
      required: true,
    },
    // expand row option
    expandOption: {
      type: Object,
      default: function () {
        return null
      },
    },
    // checkbox option
    checkboxOption: {
      type: Object,
      default: function () {
        return null
      },
    },
    // radio option
    radioOption: {
      type: Object,
      default: function () {
        return null
      },
    },
    // virual scroll
    virtualScrollOption: {
      type: Object,
      default: null,
    },
    // is virtual scroll
    isVirtualScroll: {
      type: Boolean,
      default: false,
    },
    // is scrolling
    showVirtualScrollingPlaceholder: {
      type: Boolean,
      default: false,
    },
    rowKeyFieldName: {
      type: String,
      default: null,
    },
    // cell style option
    cellStyleOption: {
      type: Object,
      default: function () {
        return null
      },
    },
    // cell span option
    cellSpanOption: {
      type: Object,
      default: function () {
        return null
      },
    },
    // highlight row key
    highlightRowKey: {
      type: [String, Number],
      default: null,
    },
    // event custom option
    eventCustomOption: {
      type: Object,
      default: function () {
        return null
      },
    },
    // cell selection option
    cellSelectionOption: {
      type: Object,
      default: function () {
        return null
      },
    },
    // cell selection data
    cellSelectionData: {
      type: Object,
      default: function () {
        return null
      },
    },
    // cell selection range data
    cellSelectionRangeData: {
      type: Object,
      default: function () {
        return null
      },
    },
    bodyIndicatorRowKeys: {
      type: Object,
      default: function () {
        return null
      },
    },
    // edit option
    editOption: {
      type: Object,
      default: function () {
        return null
      },
    },
  },
  emits: ['highlightRowChange', 'bodyCellWidthChange'],
  data() {
    return {
      // columns widths map
      colsWidths: new Map(),
      /*
        internal expand row keys
        1、当没有设置 expandedRowKeys 时生效
      */
      internalExpandRowkeys: [],
      /*
        1、存储当前多选功能的rowkey 信息
      */
      internalCheckboxSelectedRowKeys: [],
      /*
            1、存储当前单选功能的rowkey 信息
            */
      internalRadioSelectedRowKey: null,
      // virtual scroll preview rendered rowKey
      virtualScrollPreviewRenderedRowKeys: [],
      // virtual scroll repeat rendered rowKey
      virtualScrollRepeatRenderedRowKeys: [],
    }
  },
  computed: {
    /*
      column collenction info
      1、style of each column
      2、class of each column
    */
    columnCollection() {
      const columnCollection = []

      const { colgroups } = this

      colgroups.forEach((col) => {
        const colKey = col.key

        const columnCollectionItem = {
          colKey,
          class: {
            [clsName('last-left-fixed-column')]:
                            this.isLastLeftFixedColumn(col),
            [clsName('first-right-fixed-column')]:
                            this.isfirstRightFixedColumn(col),
          },
          style: {},
        }

        const { fixed, align } = col

        columnCollectionItem.style['text-align'] = align || 'center'

        if (fixed) {
          let totalWidth = 0
          // column index
          const columnIndex = colgroups.findIndex(
            (x) => x.key === colKey,
          )
          if (
            (fixed === 'left' && columnIndex > 0) ||
                        (fixed === 'right' &&
                            columnIndex < colgroups.length - 1)
          ) {
            totalWidth = getFixedTotalWidthByColumnKey({
              colgroups,
              colKey,
              fixed,
            })

            totalWidth = getValByUnit(totalWidth)
          }

          columnCollectionItem.style.left =
                        fixed === 'left' ? totalWidth : ''
          columnCollectionItem.style.right =
                        fixed === 'right' ? totalWidth : ''
        }

        columnCollection.push(columnCollectionItem)
      })
      return columnCollection
    },
    // expand column
    expandColumn() {
      return this.colgroups.find((x) => x.type === COLUMN_TYPES.EXPAND)
    },
    /*
        是否是可控行展开
        1、当设置了 expandedRowKeys 属性时则为可控行展开
        */
    isControlledExpand() {
      return (
        this.expandOption &&
                Array.isArray(this.expandOption.expandedRowKeys)
      )
    },

    // expanded row keys
    expandedRowkeys() {
      return this.isControlledExpand
        ? this.expandOption.expandedRowKeys
        : this.internalExpandRowkeys
    },

    // disable row selected row keys
    disableCheckboxSelectedRowKeys() {
      const result = []

      const { checkboxOption, internalCheckboxSelectedRowKeys } = this

      if (!checkboxOption) {
        return result
      }
      const { disableSelectedRowKeys } = checkboxOption

      if (
        internalCheckboxSelectedRowKeys.length > 0 &&
                Array.isArray(disableSelectedRowKeys) &&
                disableSelectedRowKeys.length > 0
      ) {
        disableSelectedRowKeys.forEach((rowkey) => {
          if (internalCheckboxSelectedRowKeys.includes(rowkey)) {
            result.push(rowkey)
          }
        })
      }

      return result
    },

    // disable row unselected row keys
    disableCheckboxUnselectedRowKeys() {
      const result = []

      const { checkboxOption, internalCheckboxSelectedRowKeys } = this

      if (!checkboxOption) {
        return result
      }
      const { disableSelectedRowKeys } = checkboxOption

      if (
        Array.isArray(disableSelectedRowKeys) &&
                disableSelectedRowKeys.length > 0
      ) {
        disableSelectedRowKeys.forEach((rowkey) => {
          if (!internalCheckboxSelectedRowKeys.includes(rowkey)) {
            result.push(rowkey)
          }
        })
      }

      return result
    },

    /*
        is row keys selected all
        为 true 的条件：选中数量 + 禁用选中数量 === 总量
        */
    isCheckboxSelectedAll() {
      if (this.allRowKeys.length > 0) {
        if (
          this.internalCheckboxSelectedRowKeys.length +
                        this.disableCheckboxUnselectedRowKeys.length ===
                    this.allRowKeys.length
        ) {
          return true
        }
      }

      return false
    },
    // is checkbox indeterminate
    isCheckboxIndeterminate() {
      const { internalCheckboxSelectedRowKeys, allRowKeys } = this

      return (
        internalCheckboxSelectedRowKeys.length > 0 &&
                internalCheckboxSelectedRowKeys.length < allRowKeys.length
      )
    },
    // 是否是受控属性（取决于selectedRowKey）
    isControlledRadio() {
      const { radioOption } = this

      return (
        radioOption &&
                Object.keys(radioOption).includes('selectedRowKey')
      )
    },
  },
  watch: {
    // watch expand Option
    expandOption: {
      handler: function () {
        this.initInternalExpandRowKeys()
      },
      immediate: true,
    },
    // watch expandOption expandedRowKeys
    'expandOption.expandedRowKeys': {
      handler: function () {
        this.initInternalExpandRowKeys()
      },
    },
    // watch checkbox option
    checkboxOption: {
      handler: function () {
        this.initInternalCheckboxSelectedRowKeys()
      },
      immediate: true,
    },
    // watch selectedRowKeys
    'checkboxOption.selectedRowKeys': {
      handler: function () {
        this.resetInternalCheckboxSelectedRowKeys()
      },
    },
    // watch internalCheckboxSelectedRowKeys
    internalCheckboxSelectedRowKeys: {
      handler: function () {
        // send to checkbox all(in header)
        this.sendToCheckboxAll()
      },
    },
    // watch checkbox option
    radioOption: {
      handler: function () {
        this.initInternalRadioSelectedRowKey()
      },
      immediate: true,
    },
    // watch selectedRowKeys
    'radioOption.selectedRowKey': {
      handler: function () {
        this.initInternalRadioSelectedRowKey()
      },
    },
  },
  mounted() {
    // receive checkbox row selected change from FAN_TABLE_BODY_CHECKBOX_CONTENT
    this.eventCenter.on(GLOBAL_EVENT.CHECKBOX_SELECTED_ROW_CHANGE, (params) => {
      this.checkboxSelectedRowChange(params)
    })

    // receive checkbox row selected change from FAN_TABLE_BODY_CHECKBOX_CONTENT
    this.eventCenter.on(GLOBAL_EVENT.CHECKBOX_SELECTED_ALL_CHANGE_BODY, (params) => {
      this.checkboxSelectedAllChange(params)
    })

    // receive radio row selected change from FAN_TABLE_BODY_RADIO_CONTENT
    this.eventCenter.on(GLOBAL_EVENT.RADIO_SELECTED_ROW_CHANGE, (params) => {
      this.radioSelectedRowChange(params)
    })

    // recieve tr click
    this.eventCenter.on(GLOBAL_EVENT.BODY_ROW_CLICK, (params) => {
      this.rowClick(params)
    })

    if (this.checkboxOption) {
      // 这里 nextTick 解决由于子组件先初始化，导致父组件无法接收消息的问题
      this.$nextTick(() => {
        this.sendToCheckboxAll()
      })
    }
  },
  methods: {
    // is last left fixed column
    isLastLeftFixedColumn(column) {
      let result = false

      const { colgroups } = this

      const { fixed } = column

      if (fixed === 'left') {
        const { field } = column
        const leftFixedColumns = colgroups.filter(
          (x) => x.fixed === 'left',
        )
        const index = leftFixedColumns.findIndex(
          (x) => x.field === field,
        )

        if (index === leftFixedColumns.length - 1) {
          result = true
        }
      }
      return result
    },

    // is first right fixed column
    isfirstRightFixedColumn(column) {
      let result = false

      const { colgroups } = this

      const { fixed } = column

      if (fixed === 'right') {
        const { field } = column
        const rightFixedColumns = colgroups.filter(
          (x) => x.fixed === 'right',
        )

        if (rightFixedColumns[0].field === field) {
          result = true
        }
      }
      return result
    },

    /*
         * @expandRowChange
         * @desc  row expand change
         * @param {object} rowData - row data
         * @param {number} rowIndex - row index
         */
    expandRowChange(rowData, rowIndex) {
      const {
        expandOption,
        internalExpandRowkeys,
        expandedRowkeys,
        rowKeyFieldName,
      } = this

      // deal before expand row method
      if (typeof expandOption.beforeExpandRowChange === 'function') {
        const beforeExpandRowResult =
                    expandOption.beforeExpandRowChange({
                      beforeExpandedRowKeys: expandedRowkeys,
                      row: rowData,
                      rowIndex,
                    })
        // interrupt execute
        if (beforeExpandRowResult === false) {
          return false
        }
      }

      const rowKey = rowData[rowKeyFieldName]

      const rowKeyIndex = internalExpandRowkeys.indexOf(rowKey)
      if (rowKeyIndex > -1) {
        internalExpandRowkeys.splice(rowKeyIndex, 1)
      } else {
        internalExpandRowkeys.push(rowKey)
      }

      // deal after expand row method
      if (typeof expandOption.afterExpandRowChange === 'function') {
        expandOption.afterExpandRowChange({
          afterExpandedRowKeys: internalExpandRowkeys,
          row: rowData,
          rowIndex,
        })
      }
    },

    /*
         * @rowClick
         * @desc  row expand click event
         * @param {object} rowData - row data
         * @param {number} rowIndex - row index
         */
    rowClick({ rowData, rowIndex }) {
      const {
        expandOption,
        isExpandRow,
        expandRowChange,
        rowKeyFieldName,
      } = this

      // 行高亮功能
      if (rowKeyFieldName) {
        const rowKey = rowData[rowKeyFieldName]
        // this.$emit(EMIT_EVENTS.HIGHLIGHT_ROW_CHANGE, { rowKey })
        this.$emit('highlightRowChange', { rowKey })
      }

      // 行展开功能
      if (!isExpandRow({ rowData, rowIndex })) {
        return false
      }

      const trigger = expandOption.trigger

      // expand row by click row
      if (trigger === EXPAND_TRIGGER_TYPES.ROW) {
        expandRowChange(rowData, rowIndex)
      }
    },

    /*
         * @isExpandRow
         * @desc  is expand row
         * @param {object} rowData - row data
         * @param {number} rowIndex - row index
         */
    isExpandRow({ rowData, rowIndex }) {
      let result = false

      const { expandColumn, expandOption } = this

      if (expandColumn && expandOption) {
        // 是否允许展开
        let expandable = true
        if (typeof expandOption.expandable === 'function') {
          expandable = expandOption.expandable({
            row: rowData,
            column: expandColumn,
            rowIndex,
          })
        }

        if (expandable !== false) {
          result = true
        }
      }

      return result
    },

    /*
         * @tdSizeChange
         * @desc  td size change
         * @param {any} key - column key
         * @param {number|string} width - column real width
         */
    tdSizeChange({ key, width }) {
      const { colsWidths } = this
      colsWidths.set(key, width)
      // this.$emit(EMIT_EVENTS.BODY_CELL_WIDTH_CHANGE, colsWidths)
      this.$emit('bodyCellWidthChange', colsWidths)
    },

    // init internal expand row keys
    initInternalExpandRowKeys() {
      const { expandOption, isControlledExpand, allRowKeys } = this

      if (!expandOption) {
        return false
      }

      if (isControlledExpand) {
        this.internalExpandRowkeys =
                    expandOption.expandedRowKeys.slice(0)
      } else if (expandOption.defaultExpandAllRows) {
        this.internalExpandRowkeys = allRowKeys
      } else if (expandOption.defaultExpandedRowKeys) {
        this.internalExpandRowkeys =
                    expandOption.defaultExpandedRowKeys.slice(0)
      }
    },
    // get expand row
    getExpandRowComp({ rowData, rowIndex }) {
      if (this.isExpandRow({ rowData, rowIndex })) {
        const expandTrProps = {
          tableViewportWidth: this.tableViewportWidth,
          colgroups: this.colgroups,
          expandOption: this.expandOption,
          expandedRowkeys: this.expandedRowkeys,
          expandColumn: this.expandColumn,
          rowKeyFieldName: this.rowKeyFieldName,
          rowData,
          rowIndex,
        }

        return <ExpandTr {...expandTrProps} />
      }

      return null
    },

    // send to checkbox all
    sendToCheckboxAll() {
      const { isCheckboxSelectedAll, isCheckboxIndeterminate } = this

      this.eventCenter.emit(GLOBAL_EVENT.CHECKBOX_SELECTED_ALL_INFO,
        {
          isIndeterminate: isCheckboxIndeterminate,
          isSelected: isCheckboxSelectedAll,
        },
      )
    },

    // init internal Radio SelectedRowKey
    initInternalRadioSelectedRowKey() {
      const { radioOption, isControlledRadio } = this

      if (!radioOption) {
        return false
      }

      const { selectedRowKey, defaultSelectedRowKey } = radioOption

      this.internalRadioSelectedRowKey = isControlledRadio
        ? selectedRowKey
        : defaultSelectedRowKey
    },

    // init internal Checkbox SelectedRowKeys
    initInternalCheckboxSelectedRowKeys() {
      let result = []
      const { checkboxOption, allRowKeys } = this

      if (!checkboxOption) {
        return false
      }

      const {
        selectedRowKeys,
        defaultSelectedAllRows,
        defaultSelectedRowKeys,
      } = checkboxOption

      if (Array.isArray(selectedRowKeys)) {
        result = selectedRowKeys
      } else if (defaultSelectedAllRows) {
        result = allRowKeys
      } else if (Array.isArray(defaultSelectedRowKeys)) {
        result = defaultSelectedRowKeys
      }
      this.internalCheckboxSelectedRowKeys = result
    },
    // reset internalCheckboxSelectedRowKeys by selectedRowKeys
    resetInternalCheckboxSelectedRowKeys() {
      this.internalCheckboxSelectedRowKeys =
                this.checkboxOption.selectedRowKeys.slice(0)
    },

    /*
         * @checkboxSelectedRowChange
         * @desc  selected row change
         * @param {number|string} rowKey - rowKey
         * @param {bool} isSelected
         */
    checkboxSelectedRowChange({ rowKey, isSelected }) {
      const {
        checkboxOption,
        internalCheckboxSelectedRowKeys,
        rowKeyFieldName,
      } = this

      let selectedRowChange = null
      let selectedRowKeys = null
      if (!checkboxOption) return
      if (checkboxOption.selectedRowChange) {
        selectedRowChange = checkboxOption.selectedRowChange
      }
      if (checkboxOption.selectedRowKeys) {
        selectedRowKeys = checkboxOption.selectedRowKeys
      }

      const internalCheckboxSelectedRowKeysTemp =
                internalCheckboxSelectedRowKeys.slice(0)

      // will selected
      const rowKeyIndex =
                internalCheckboxSelectedRowKeysTemp.indexOf(rowKey)
      if (isSelected) {
        // bug fixed:通过行点击触发，导致key重复的问题
        if (rowKeyIndex === -1) {
          internalCheckboxSelectedRowKeysTemp.push(rowKey)
        }
      } else {
        if (rowKeyIndex > -1) {
          internalCheckboxSelectedRowKeysTemp.splice(rowKeyIndex, 1)
        }
      }

      // 非可控才改变 internalCheckboxSelectedRowKeys
      if (!Array.isArray(selectedRowKeys)) {
        this.internalCheckboxSelectedRowKeys =
                    internalCheckboxSelectedRowKeysTemp
      }

      selectedRowChange({
        row: this.actualRenderTableData.find(
          (x) => x[rowKeyFieldName] === rowKey,
        ),
        isSelected,
        selectedRowKeys: internalCheckboxSelectedRowKeysTemp,
      })
    },

    /*
         * @checkboxSelectedAllChange
         * @desc  selected all change
         * @param {bool} isSelected - is selected
         */
    checkboxSelectedAllChange({ isSelected }) {
      const {
        checkboxOption,
        internalCheckboxSelectedRowKeys,
        allRowKeys,
        disableCheckboxSelectedRowKeys,
        disableCheckboxUnselectedRowKeys,
      } = this
      if (!checkboxOption) return
      const { selectedAllChange, selectedRowKeys } = checkboxOption

      let internalCheckboxSelectedRowKeysTemp =
                internalCheckboxSelectedRowKeys.slice(0)
      // selected all
      if (isSelected) {
        // except disable Row Unselected keys
        const allSelectedKeys = allRowKeys.slice(0)
        if (disableCheckboxUnselectedRowKeys.length > 0) {
          disableCheckboxUnselectedRowKeys.forEach((rowkey) => {
            const index = allSelectedKeys.indexOf(rowkey)
            if (index > -1) {
              allSelectedKeys.splice(index, 1)
            }
          })
        }

        internalCheckboxSelectedRowKeysTemp = allSelectedKeys
      } else {
        // except disable Row Selected keys
        internalCheckboxSelectedRowKeysTemp =
                    disableCheckboxSelectedRowKeys
      }

      // 非可控才改变 internalCheckboxSelectedRowKeys
      if (!Array.isArray(selectedRowKeys)) {
        this.internalCheckboxSelectedRowKeys =
                    internalCheckboxSelectedRowKeysTemp
      }

      selectedAllChange && selectedAllChange({
        isSelected,
        selectedRowKeys: internalCheckboxSelectedRowKeysTemp,
        // changeRowKeys:
      })
    },

    /*
         * @radioSelectedRowChange
         * @desc  selected all change
         * @param {number|string} rowKey - rowKey
         */
    radioSelectedRowChange({ rowKey }) {
      const { radioOption, rowKeyFieldName, isControlledRadio } = this
      let selectedRowChange = null
      if (!radioOption) {
        return
      }
      if (radioOption.selectedRowChange) {
        selectedRowChange = radioOption.selectedRowChange
      }

      // 非受控
      if (!isControlledRadio) {
        this.internalRadioSelectedRowKey = rowKey
      }

      selectedRowChange({
        row: this.actualRenderTableData.find(
          (x) => x[rowKeyFieldName] === rowKey,
        ),
      })
    },
    // get tr key
    getTrKey({ rowData, rowIndex }) {
      let result = rowIndex

      const { rowKeyFieldName } = this
      if (rowKeyFieldName) {
        result = rowData[rowKeyFieldName]
      }
      return result
    },

    /*
        rendering row keys
        virtual scrolling will invoke
        */
    renderingRowKeys(rowKeys) {
      const {
        virtualScrollPreviewRenderedRowKeys: previewRenderedRowKeys,
      } = this

      this.virtualScrollRepeatRenderedRowKeys = rowKeys.filter(
        (rowKey) => {
          return previewRenderedRowKeys.indexOf(rowKey) !== -1
        },
      )

      this.virtualScrollPreviewRenderedRowKeys = rowKeys
    },
  },
  render() {
    const {
      colgroups,
      actualRenderTableData,
      expandOption,
      expandRowChange,
      isExpandRow,
      getExpandRowComp,
      expandedRowkeys,
      checkboxOption,
      radioOption,
      rowKeyFieldName,
      tdSizeChange,
      internalCheckboxSelectedRowKeys,
      internalRadioSelectedRowKey,
      isVirtualScroll,
      cellStyleOption,
      showVirtualScrollingPlaceholder,
    } = this

    const { virtualScrollRepeatRenderedRowKeys } = this

    return (
      <tbody>
        {/* Measure each column width with additional hidden col */}
        <tr style="height:0;">
          {colgroups.map((column) => {
            const measureTdProps = {
              key: getDomResizeObserverCompKey(
                column.key,
                this.columnsOptionResetTime,
              ),
              tagName: 'td',
              id: column.key,
              onDomResizeChange: tdSizeChange,
              style: {
                padding: 0,
                border: 0,
                height: 0,
              },
            }
            return <VueDomResizeObserver {...measureTdProps} />
          })}
        </tr>
        {actualRenderTableData.map((rowData, rowIndex) => {
          const trProps = {
            key: this.getTrKey({ rowData, rowIndex }),
            rowIndex,
            rowData,
            colgroups,
            expandOption,
            expandedRowkeys,
            checkboxOption,
            radioOption,
            rowKeyFieldName,
            allRowKeys: this.allRowKeys,
            expandRowChange,
            internalCheckboxSelectedRowKeys,
            internalRadioSelectedRowKey,
            isVirtualScroll,
            isExpandRow: isExpandRow({ rowData, rowIndex }),
            cellStyleOption,
            cellSpanOption: this.cellSpanOption,
            highlightRowKey: this.highlightRowKey,
            eventCustomOption: this.eventCustomOption,
            cellSelectionData: this.cellSelectionData,
            editOption: this.editOption,
            columnCollection: this.columnCollection,
            cellSelectionRangeData: this.cellSelectionRangeData,
            bodyIndicatorRowKeys: this.bodyIndicatorRowKeys,
          }

          if (showVirtualScrollingPlaceholder) {
            const trPropsScrolling = {
              key: this.getTrKey({ rowData, rowIndex }),
              colgroups,
            }

            if (
              virtualScrollRepeatRenderedRowKeys.indexOf(
                rowData[this.rowKeyFieldName],
              ) !== -1
            ) {
              return [
                // body tr
                <BodyTr {...trProps} />,
              ]
            } else {
              return <BodyTrScrolling {...trPropsScrolling} />
            }
          } else {
            return [
              // body tr
              <BodyTr {...trProps} />,
              // expand row
              getExpandRowComp({ rowData, rowIndex }),
            ]
          }
        })}
      </tbody>
    )
  },
}
)