import { h, ref, computed, watch, getCurrentInstance } from 'vue'

import QTh from './QTh.js'

import QSeparator from '../separator/QSeparator.js'
import QIcon from '../icon/QIcon.js'
import QVirtualScroll from '../virtual-scroll/QVirtualScroll.js'
import QSelect from '../select/QSelect.js'
import QLinearProgress from '../linear-progress/QLinearProgress.js'
import QCheckbox from '../checkbox/QCheckbox.js'
import QBtn from '../btn/QBtn.js'

import getTableMiddle from './get-table-middle.js'

import useDark, {
  useDarkProps
} from '../../composables/private.use-dark/use-dark.js'
import { commonVirtScrollPropsList } from '../virtual-scroll/use-virtual-scroll.js'
import useFullscreen, {
  useFullscreenProps,
  useFullscreenEmits
} from '../../composables/private.use-fullscreen/use-fullscreen.js'

import { useTableSort, useTableSortProps } from './table-sort.js'
import { useTableFilter, useTableFilterProps } from './table-filter.js'
import {
  useTablePaginationState,
  useTablePagination,
  useTablePaginationProps
} from './table-pagination.js'
import {
  useTableRowSelection,
  useTableRowSelectionProps,
  useTableRowSelectionEmits
} from './table-row-selection.js'
import {
  useTableRowExpand,
  useTableRowExpandProps,
  useTableRowExpandEmits
} from './table-row-expand.js'
import {
  useTableColumnSelection,
  useTableColumnSelectionProps
} from './table-column-selection.js'

import {
  injectProp,
  injectMultipleProps
} from '../../utils/private.inject-obj-prop/inject-obj-prop.js'
import { createComponent } from '../../utils/private.create/create.js'

const bottomClass = 'q-table__bottom row items-center'

const virtScrollPassthroughProps = {}
commonVirtScrollPropsList.forEach(p => {
  virtScrollPassthroughProps[p] = {}
})

export default createComponent({
  name: 'QTable',

  props: {
    rows: {
      type: Array,
      required: true
    },
    rowKey: {
      type: [String, Function],
      default: 'id'
    },

    columns: Array,
    loading: Boolean,

    iconFirstPage: String,
    iconPrevPage: String,
    iconNextPage: String,
    iconLastPage: String,

    title: String,

    hideHeader: Boolean,

    grid: Boolean,
    gridHeader: Boolean,

    dense: Boolean,
    flat: Boolean,
    bordered: Boolean,
    square: Boolean,
    separator: {
      type: String,
      default: 'horizontal',
      validator: v => ['horizontal', 'vertical', 'cell', 'none'].includes(v)
    },
    wrapCells: Boolean,

    virtualScroll: Boolean,
    virtualScrollTarget: {},
    ...virtScrollPassthroughProps,

    noDataLabel: String,
    noResultsLabel: String,
    loadingLabel: String,
    selectedRowsLabel: Function,
    rowsPerPageLabel: String,
    paginationLabel: Function,

    color: {
      type: String,
      default: 'grey-8'
    },

    titleClass: [String, Array, Object],
    tableStyle: [String, Array, Object],
    tableClass: [String, Array, Object],
    tableHeaderStyle: [String, Array, Object],
    tableHeaderClass: [String, Array, Object],
    tableRowStyleFn: Function,
    tableRowClassFn: Function,
    cardContainerClass: [String, Array, Object],
    cardContainerStyle: [String, Array, Object],
    cardStyle: [String, Array, Object],
    cardClass: [String, Array, Object],
    cardStyleFn: Function,
    cardClassFn: Function,

    hideBottom: Boolean,
    hideSelectedBanner: Boolean,
    hideNoData: Boolean,
    hidePagination: Boolean,

    onRowClick: Function,
    onRowDblclick: Function,
    onRowContextmenu: Function,

    ...useDarkProps,
    ...useFullscreenProps,

    ...useTableColumnSelectionProps,
    ...useTableFilterProps,
    ...useTablePaginationProps,
    ...useTableRowExpandProps,
    ...useTableRowSelectionProps,
    ...useTableSortProps
  },

  emits: [
    'request',
    'virtualScroll',
    ...useFullscreenEmits,
    ...useTableRowExpandEmits,
    ...useTableRowSelectionEmits
  ],

  setup(props, { slots, emit }) {
    const vm = getCurrentInstance()
    const {
      proxy: { $q }
    } = vm

    const isDark = useDark(props, $q)
    const { inFullscreen, toggleFullscreen } = useFullscreen()

    const getRowKey = computed(() =>
      typeof props.rowKey === 'function'
        ? props.rowKey
        : row => row[props.rowKey]
    )

    const rootRef = ref(null)
    const virtScrollRef = ref(null)
    const hasVirtScroll = computed(
      () => props.grid !== true && props.virtualScroll === true
    )

    const cardDefaultClass = computed(
      () =>
        ' q-table__card' +
        (isDark.value === true ? ' q-table__card--dark q-dark' : '') +
        (props.square === true ? ' q-table--square' : '') +
        (props.flat === true ? ' q-table--flat' : '') +
        (props.bordered === true ? ' q-table--bordered' : '')
    )

    const containerClass = computed(
      () =>
        `q-table__container q-table--${props.separator}-separator column no-wrap` +
        (props.grid === true ? ' q-table--grid' : cardDefaultClass.value) +
        (isDark.value === true ? ' q-table--dark' : '') +
        (props.dense === true ? ' q-table--dense' : '') +
        (props.wrapCells === false ? ' q-table--no-wrap' : '') +
        (inFullscreen.value === true ? ' fullscreen scroll' : '')
    )

    const rootContainerClass = computed(
      () =>
        containerClass.value +
        (props.loading === true ? ' q-table--loading' : '')
    )

    watch(
      () =>
        props.tableStyle +
        props.tableClass +
        props.tableHeaderStyle +
        props.tableHeaderClass +
        containerClass.value,
      () => {
        if (hasVirtScroll.value === true) virtScrollRef.value?.reset()
      }
    )

    const {
      innerPagination,
      computedPagination,
      isServerSide,

      requestServerInteraction,
      setPagination
    } = useTablePaginationState(vm, getCellValue)

    const { computedFilterMethod } = useTableFilter(props, setPagination)
    const { isRowExpanded, setExpanded, updateExpanded } = useTableRowExpand(
      props,
      emit
    )

    const filteredSortedRows = computed(() => {
      let rows = props.rows

      if (isServerSide.value === true || rows.length === 0) {
        return rows
      }

      const { sortBy, descending } = computedPagination.value

      if (props.filter) {
        rows = computedFilterMethod.value(
          rows,
          props.filter,
          computedCols.value,
          getCellValue
        )
      }

      if (columnToSort.value !== null) {
        rows = computedSortMethod.value(
          props.rows === rows ? rows.slice() : rows,
          sortBy,
          descending
        )
      }

      return rows
    })

    const filteredSortedRowsNumber = computed(
      () => filteredSortedRows.value.length
    )

    const computedRows = computed(() => {
      let rows = filteredSortedRows.value

      if (isServerSide.value === true) {
        return rows
      }

      const { rowsPerPage } = computedPagination.value

      if (rowsPerPage !== 0) {
        if (firstRowIndex.value === 0 && props.rows !== rows) {
          if (rows.length > lastRowIndex.value) {
            rows = rows.slice(0, lastRowIndex.value)
          }
        } else {
          rows = rows.slice(firstRowIndex.value, lastRowIndex.value)
        }
      }

      return rows
    })

    const {
      hasSelectionMode,
      singleSelection,
      multipleSelection,
      allRowsSelected,
      someRowsSelected,
      rowsSelectedNumber,

      isRowSelected,
      clearSelection,
      updateSelection
    } = useTableRowSelection(props, emit, computedRows, getRowKey)

    const { colList, computedCols, computedColsMap, computedColspan } =
      useTableColumnSelection(props, computedPagination, hasSelectionMode)

    const { columnToSort, computedSortMethod, sort } = useTableSort(
      props,
      computedPagination,
      colList,
      setPagination
    )

    const {
      firstRowIndex,
      lastRowIndex,
      isFirstPage,
      isLastPage,
      pagesNumber,
      computedRowsPerPageOptions,
      computedRowsNumber,

      firstPage,
      prevPage,
      nextPage,
      lastPage
    } = useTablePagination(
      vm,
      innerPagination,
      computedPagination,
      isServerSide,
      setPagination,
      filteredSortedRowsNumber
    )

    const nothingToDisplay = computed(() => computedRows.value.length === 0)

    const virtProps = computed(() => {
      const acc = {}

      commonVirtScrollPropsList.forEach(p => {
        acc[p] = props[p]
      })

      if (acc.virtualScrollItemSize === void 0) {
        acc.virtualScrollItemSize = props.dense === true ? 28 : 48
      }

      return acc
    })

    function resetVirtualScroll() {
      if (hasVirtScroll.value === true) virtScrollRef.value.reset()
    }

    function getBody() {
      if (props.grid === true) {
        return getGridBody()
      }

      const header = props.hideHeader !== true ? getTHead : null

      if (hasVirtScroll.value === true) {
        const topRow = slots['top-row']
        const bottomRow = slots['bottom-row']

        const virtSlots = {
          default: slotProps =>
            getTBodyTR(slotProps.item, slots.body, slotProps.index)
        }

        if (topRow !== void 0) {
          const topContent = h('tbody', topRow({ cols: computedCols.value }))

          virtSlots.before =
            header === null
              ? () => topContent
              : () => [header()].concat(topContent)
        } else if (header !== null) {
          virtSlots.before = header
        }

        if (bottomRow !== void 0) {
          virtSlots.after = () =>
            h('tbody', bottomRow({ cols: computedCols.value }))
        }

        return h(
          QVirtualScroll,
          {
            ref: virtScrollRef,
            class: props.tableClass,
            style: props.tableStyle,
            ...virtProps.value,
            scrollTarget: props.virtualScrollTarget,
            items: computedRows.value,
            type: '__qtable',
            tableColspan: computedColspan.value,
            onVirtualScroll: onVScroll
          },
          virtSlots
        )
      }

      const child = [getTBody()]

      if (header !== null) {
        child.unshift(header())
      }

      return getTableMiddle(
        {
          class: ['q-table__middle scroll', props.tableClass],
          style: props.tableStyle
        },
        child
      )
    }

    function scrollTo(toIndex, edge) {
      if (virtScrollRef.value !== null) {
        virtScrollRef.value.scrollTo(toIndex, edge)
        return
      }

      toIndex = parseInt(toIndex, 10)
      const rowEl = rootRef.value.querySelector(
        `tbody tr:nth-of-type(${toIndex + 1})`
      )

      if (rowEl !== null) {
        const scrollTarget = rootRef.value.querySelector(
          '.q-table__middle.scroll'
        )
        const offsetTop = rowEl.offsetTop - props.virtualScrollStickySizeStart
        const direction =
          offsetTop < scrollTarget.scrollTop ? 'decrease' : 'increase'

        scrollTarget.scrollTop = offsetTop

        emit('virtualScroll', {
          index: toIndex,
          from: 0,
          to: innerPagination.value.rowsPerPage - 1,
          direction
        })
      }
    }

    function onVScroll(info) {
      emit('virtualScroll', info)
    }

    function getProgress() {
      return [
        h(QLinearProgress, {
          class: 'q-table__linear-progress',
          color: props.color,
          dark: isDark.value,
          indeterminate: true,
          trackColor: 'transparent'
        })
      ]
    }

    function getTBodyTR(row, bodySlot, pageIndex) {
      const key = getRowKey.value(row),
        selected = isRowSelected(key)

      if (bodySlot !== void 0) {
        const cfg = {
          key,
          row,
          pageIndex,
          __trClass: selected ? 'selected' : ''
        }

        if (props.tableRowStyleFn !== void 0) {
          cfg.__trStyle = props.tableRowStyleFn(row)
        }

        if (props.tableRowClassFn !== void 0) {
          const cls = props.tableRowClassFn(row)
          if (cls) {
            cfg.__trClass = `${cls} ${cfg.__trClass}`
          }
        }

        return bodySlot(getBodyScope(cfg))
      }

      const bodyCell = slots['body-cell'],
        child = computedCols.value.map(col => {
          const bodyCellCol = slots[`body-cell-${col.name}`],
            slot = bodyCellCol !== void 0 ? bodyCellCol : bodyCell

          return slot !== void 0
            ? slot(getBodyCellScope({ key, row, pageIndex, col }))
            : h(
                'td',
                {
                  class: col.__tdClass(row),
                  style: col.__tdStyle(row)
                },
                getCellValue(col, row)
              )
        })

      if (hasSelectionMode.value === true) {
        const slot = slots['body-selection']
        const content =
          slot !== void 0
            ? slot(getBodySelectionScope({ key, row, pageIndex }))
            : [
                h(QCheckbox, {
                  modelValue: selected,
                  color: props.color,
                  dark: isDark.value,
                  dense: props.dense,
                  'onUpdate:modelValue': (adding, evt) => {
                    updateSelection([key], [row], adding, evt)
                  }
                })
              ]

        child.unshift(h('td', { class: 'q-table--col-auto-width' }, content))
      }

      const data = { key, class: { selected } }

      if (props.onRowClick !== void 0) {
        data.class['cursor-pointer'] = true
        data.onClick = evt => {
          emit('rowClick', evt, row, pageIndex)
        }
      }

      if (props.onRowDblclick !== void 0) {
        data.class['cursor-pointer'] = true
        data.onDblclick = evt => {
          emit('rowDblclick', evt, row, pageIndex)
        }
      }

      if (props.onRowContextmenu !== void 0) {
        data.class['cursor-pointer'] = true
        data.onContextmenu = evt => {
          emit('rowContextmenu', evt, row, pageIndex)
        }
      }

      if (props.tableRowStyleFn !== void 0) {
        data.style = props.tableRowStyleFn(row)
      }

      if (props.tableRowClassFn !== void 0) {
        const cls = props.tableRowClassFn(row)
        if (cls) {
          data.class[cls] = true
        }
      }

      return h('tr', data, child)
    }

    function getTBody() {
      const body = slots.body,
        topRow = slots['top-row'],
        bottomRow = slots['bottom-row']

      let child = computedRows.value.map((row, pageIndex) =>
        getTBodyTR(row, body, pageIndex)
      )

      if (topRow !== void 0) {
        child = topRow({ cols: computedCols.value }).concat(child)
      }
      if (bottomRow !== void 0) {
        child = child.concat(bottomRow({ cols: computedCols.value }))
      }

      return h('tbody', child)
    }

    function getBodyScope(data) {
      injectBodyCommonScope(data)

      data.cols = data.cols.map(col =>
        injectProp({ ...col }, 'value', () => getCellValue(col, data.row))
      )

      return data
    }

    function getBodyCellScope(data) {
      injectBodyCommonScope(data)
      injectProp(data, 'value', () => getCellValue(data.col, data.row))
      return data
    }

    function getBodySelectionScope(data) {
      injectBodyCommonScope(data)
      return data
    }

    function injectBodyCommonScope(data) {
      Object.assign(data, {
        cols: computedCols.value,
        colsMap: computedColsMap.value,
        sort,
        rowIndex: firstRowIndex.value + data.pageIndex,
        color: props.color,
        dark: isDark.value,
        dense: props.dense
      })

      if (hasSelectionMode.value === true) {
        injectProp(
          data,
          'selected',
          () => isRowSelected(data.key),
          (adding, evt) => {
            updateSelection([data.key], [data.row], adding, evt)
          }
        )
      }

      injectProp(
        data,
        'expand',
        () => isRowExpanded(data.key),
        adding => {
          updateExpanded(data.key, adding)
        }
      )
    }

    function getCellValue(col, row) {
      const val =
        typeof col.field === 'function' ? col.field(row) : row[col.field]
      return col.format !== void 0 ? col.format(val, row) : val
    }

    const marginalsScope = computed(() => ({
      pagination: computedPagination.value,
      pagesNumber: pagesNumber.value,
      isFirstPage: isFirstPage.value,
      isLastPage: isLastPage.value,
      firstPage,
      prevPage,
      nextPage,
      lastPage,

      inFullscreen: inFullscreen.value,
      toggleFullscreen
    }))

    function getTopDiv() {
      const top = slots.top,
        topLeft = slots['top-left'],
        topRight = slots['top-right'],
        topSelection = slots['top-selection'],
        hasSelection =
          hasSelectionMode.value === true &&
          topSelection !== void 0 &&
          rowsSelectedNumber.value > 0,
        topClass = 'q-table__top relative-position row items-center'

      if (top !== void 0) {
        return h('div', { class: topClass }, [top(marginalsScope.value)])
      }

      let child

      if (hasSelection === true) {
        child = topSelection(marginalsScope.value).slice()
      } else {
        child = []

        if (topLeft !== void 0) {
          child.push(
            h('div', { class: 'q-table__control' }, [
              topLeft(marginalsScope.value)
            ])
          )
        } else if (props.title) {
          child.push(
            h('div', { class: 'q-table__control' }, [
              h(
                'div',
                {
                  class: ['q-table__title', props.titleClass]
                },
                props.title
              )
            ])
          )
        }
      }

      if (topRight !== void 0) {
        child.push(h('div', { class: 'q-table__separator col' }))
        child.push(
          h('div', { class: 'q-table__control' }, [
            topRight(marginalsScope.value)
          ])
        )
      }

      if (child.length === 0) return
      return h('div', { class: topClass }, child)
    }

    const headerSelectedValue = computed(() =>
      someRowsSelected.value === true ? null : allRowsSelected.value
    )

    function getTHead() {
      const child = getTHeadTR()

      if (props.loading === true && slots.loading === void 0) {
        child.push(
          h('tr', { class: 'q-table__progress' }, [
            h(
              'th',
              {
                class: 'relative-position',
                colspan: computedColspan.value
              },
              getProgress()
            )
          ])
        )
      }

      return h('thead', child)
    }

    function getTHeadTR() {
      const header = slots.header,
        headerCell = slots['header-cell']

      if (header !== void 0) {
        return header(getHeaderScope({ header: true })).slice()
      }

      const child = computedCols.value.map(col => {
        const headerCellCol = slots[`header-cell-${col.name}`],
          slot = headerCellCol !== void 0 ? headerCellCol : headerCell,
          slotProps = getHeaderScope({ col })

        return slot !== void 0
          ? slot(slotProps)
          : h(
              QTh,
              {
                key: col.name,
                props: slotProps
              },
              () => col.label
            )
      })

      if (singleSelection.value === true && props.grid !== true) {
        child.unshift(h('th', { class: 'q-table--col-auto-width' }, ' '))
      } else if (multipleSelection.value === true) {
        const slot = slots['header-selection']
        const content =
          slot !== void 0
            ? slot(getHeaderScope({}))
            : [
                h(QCheckbox, {
                  color: props.color,
                  modelValue: headerSelectedValue.value,
                  dark: isDark.value,
                  dense: props.dense,
                  'onUpdate:modelValue': onMultipleSelectionSet
                })
              ]

        child.unshift(h('th', { class: 'q-table--col-auto-width' }, content))
      }

      return [
        h(
          'tr',
          {
            class: props.tableHeaderClass,
            style: props.tableHeaderStyle
          },
          child
        )
      ]
    }

    function getHeaderScope(data) {
      Object.assign(data, {
        cols: computedCols.value,
        sort,
        colsMap: computedColsMap.value,
        color: props.color,
        dark: isDark.value,
        dense: props.dense
      })

      if (multipleSelection.value === true) {
        injectProp(
          data,
          'selected',
          () => headerSelectedValue.value,
          onMultipleSelectionSet
        )
      }

      return data
    }

    function onMultipleSelectionSet(val) {
      if (someRowsSelected.value === true) {
        val = false
      }

      updateSelection(
        computedRows.value.map(getRowKey.value),
        computedRows.value,
        val
      )
    }

    const navIcon = computed(() => {
      const ico = [
        props.iconFirstPage || $q.iconSet.table.firstPage,
        props.iconPrevPage || $q.iconSet.table.prevPage,
        props.iconNextPage || $q.iconSet.table.nextPage,
        props.iconLastPage || $q.iconSet.table.lastPage
      ]
      return $q.lang.rtl === true ? ico.reverse() : ico
    })

    function getBottomDiv() {
      if (props.hideBottom === true) return

      if (nothingToDisplay.value === true) {
        if (props.hideNoData === true) return

        const message =
          props.loading === true
            ? props.loadingLabel || $q.lang.table.loading
            : props.filter
              ? props.noResultsLabel || $q.lang.table.noResults
              : props.noDataLabel || $q.lang.table.noData

        const noData = slots['no-data']
        const children =
          noData !== void 0
            ? [
                noData({
                  message,
                  icon: $q.iconSet.table.warning,
                  filter: props.filter
                })
              ]
            : [
                h(QIcon, {
                  class: 'q-table__bottom-nodata-icon',
                  name: $q.iconSet.table.warning
                }),
                message
              ]

        return h(
          'div',
          { class: bottomClass + ' q-table__bottom--nodata' },
          children
        )
      }

      const bottom = slots.bottom

      if (bottom !== void 0) {
        return h('div', { class: bottomClass }, [bottom(marginalsScope.value)])
      }

      const child =
        props.hideSelectedBanner !== true &&
        hasSelectionMode.value === true &&
        rowsSelectedNumber.value > 0
          ? [
              h('div', { class: 'q-table__control' }, [
                h('div', [
                  (props.selectedRowsLabel || $q.lang.table.selectedRecords)(
                    rowsSelectedNumber.value
                  )
                ])
              ])
            ]
          : []

      if (props.hidePagination !== true) {
        return h(
          'div',
          {
            class: bottomClass + ' justify-end'
          },
          getPaginationDiv(child)
        )
      }

      if (child.length !== 0) {
        return h('div', { class: bottomClass }, child)
      }
    }

    function onPagSelection(pag) {
      setPagination({
        page: 1,
        rowsPerPage: pag.value
      })
    }

    function getPaginationDiv(child) {
      let control
      const { rowsPerPage } = computedPagination.value,
        paginationLabel = props.paginationLabel || $q.lang.table.pagination,
        paginationSlot = slots.pagination,
        hasOpts = props.rowsPerPageOptions.length > 1

      child.push(h('div', { class: 'q-table__separator col' }))

      if (hasOpts === true) {
        child.push(
          h('div', { class: 'q-table__control' }, [
            h('span', { class: 'q-table__bottom-item' }, [
              props.rowsPerPageLabel || $q.lang.table.recordsPerPage
            ]),
            h(QSelect, {
              class: 'q-table__select inline q-table__bottom-item',
              color: props.color,
              modelValue: rowsPerPage,
              options: computedRowsPerPageOptions.value,
              displayValue:
                rowsPerPage === 0 ? $q.lang.table.allRows : rowsPerPage,
              dark: isDark.value,
              borderless: true,
              dense: true,
              optionsDense: true,
              optionsCover: true,
              'onUpdate:modelValue': onPagSelection
            })
          ])
        )
      }

      if (paginationSlot !== void 0) {
        control = paginationSlot(marginalsScope.value)
      } else {
        control = [
          h(
            'span',
            rowsPerPage !== 0 ? { class: 'q-table__bottom-item' } : {},
            [
              rowsPerPage
                ? paginationLabel(
                    firstRowIndex.value + 1,
                    Math.min(lastRowIndex.value, computedRowsNumber.value),
                    computedRowsNumber.value
                  )
                : paginationLabel(
                    1,
                    filteredSortedRowsNumber.value,
                    computedRowsNumber.value
                  )
            ]
          )
        ]

        if (rowsPerPage !== 0 && pagesNumber.value > 1) {
          const btnProps = {
            color: props.color,
            round: true,
            dense: true,
            flat: true
          }

          if (props.dense === true) {
            btnProps.size = 'sm'
          }

          if (pagesNumber.value > 2) {
            control.push(
              h(QBtn, {
                key: 'pgFirst',
                ...btnProps,
                icon: navIcon.value[0],
                disable: isFirstPage.value,
                'aria-label': $q.lang.pagination.first,
                onClick: firstPage
              })
            )
          }

          control.push(
            h(QBtn, {
              key: 'pgPrev',
              ...btnProps,
              icon: navIcon.value[1],
              disable: isFirstPage.value,
              'aria-label': $q.lang.pagination.prev,
              onClick: prevPage
            }),

            h(QBtn, {
              key: 'pgNext',
              ...btnProps,
              icon: navIcon.value[2],
              disable: isLastPage.value,
              'aria-label': $q.lang.pagination.next,
              onClick: nextPage
            })
          )

          if (pagesNumber.value > 2) {
            control.push(
              h(QBtn, {
                key: 'pgLast',
                ...btnProps,
                icon: navIcon.value[3],
                disable: isLastPage.value,
                'aria-label': $q.lang.pagination.last,
                onClick: lastPage
              })
            )
          }
        }
      }

      child.push(h('div', { class: 'q-table__control' }, control))

      return child
    }

    function getGridHeader() {
      const child =
        props.gridHeader === true
          ? [h('table', { class: 'q-table' }, [getTHead(h)])]
          : props.loading === true && slots.loading === void 0
            ? getProgress(h)
            : void 0

      return h('div', { class: 'q-table__middle' }, child)
    }

    function getGridBody() {
      const item =
        slots.item !== void 0
          ? slots.item
          : scope => {
              const child = scope.cols.map(col =>
                h('div', { class: 'q-table__grid-item-row' }, [
                  h('div', { class: 'q-table__grid-item-title' }, [col.label]),
                  h('div', { class: 'q-table__grid-item-value' }, [col.value])
                ])
              )

              if (hasSelectionMode.value === true) {
                const slot = slots['body-selection']
                const content =
                  slot !== void 0
                    ? slot(scope)
                    : [
                        h(QCheckbox, {
                          modelValue: scope.selected,
                          color: props.color,
                          dark: isDark.value,
                          dense: props.dense,
                          'onUpdate:modelValue': (adding, evt) => {
                            updateSelection(
                              [scope.key],
                              [scope.row],
                              adding,
                              evt
                            )
                          }
                        })
                      ]

                child.unshift(
                  h('div', { class: 'q-table__grid-item-row' }, content),
                  h(QSeparator, { dark: isDark.value })
                )
              }

              const data = {
                class: [
                  'q-table__grid-item-card' + cardDefaultClass.value,
                  props.cardClass
                ],
                style: props.cardStyle
              }

              if (props.cardStyleFn !== void 0) {
                data.style = [data.style, props.cardStyleFn(scope.row)]
              }

              if (props.cardClassFn !== void 0) {
                const cls = props.cardClassFn(scope.row)
                if (cls) {
                  data.class[0] += ` ${cls}`
                }
              }

              if (
                props.onRowClick !== void 0 ||
                props.onRowDblclick !== void 0 ||
                props.onRowContextmenu !== void 0
              ) {
                data.class[0] += ' cursor-pointer'

                if (props.onRowClick !== void 0) {
                  data.onClick = evt => {
                    emit('RowClick', evt, scope.row, scope.pageIndex)
                  }
                }

                if (props.onRowDblclick !== void 0) {
                  data.onDblclick = evt => {
                    emit('RowDblclick', evt, scope.row, scope.pageIndex)
                  }
                }

                if (props.onRowContextmenu !== void 0) {
                  data.onContextmenu = evt => {
                    emit('rowContextmenu', evt, scope.row, scope.pageIndex)
                  }
                }
              }

              return h(
                'div',
                {
                  class:
                    'q-table__grid-item col-xs-12 col-sm-6 col-md-4 col-lg-3' +
                    (scope.selected === true
                      ? ' q-table__grid-item--selected'
                      : '')
                },
                [h('div', data, child)]
              )
            }

      return h(
        'div',
        {
          class: ['q-table__grid-content row', props.cardContainerClass],
          style: props.cardContainerStyle
        },
        computedRows.value.map((row, pageIndex) =>
          item(
            getBodyScope({
              key: getRowKey.value(row),
              row,
              pageIndex
            })
          )
        )
      )
    }

    // expose public methods and needed computed props
    Object.assign(vm.proxy, {
      requestServerInteraction,
      setPagination,
      firstPage,
      prevPage,
      nextPage,
      lastPage,
      isRowSelected,
      clearSelection,
      isRowExpanded,
      setExpanded,
      sort,
      resetVirtualScroll,
      scrollTo,
      getCellValue
    })

    injectMultipleProps(vm.proxy, {
      filteredSortedRows: () => filteredSortedRows.value,
      computedRows: () => computedRows.value,
      computedRowsNumber: () => computedRowsNumber.value
    })

    return () => {
      const child = [getTopDiv()]
      const data = { ref: rootRef, class: rootContainerClass.value }

      if (props.grid === true) {
        child.push(getGridHeader())
      } else {
        Object.assign(data, {
          class: [data.class, props.cardClass],
          style: props.cardStyle
        })
      }

      child.push(getBody(), getBottomDiv())

      if (props.loading === true && slots.loading !== void 0) {
        child.push(slots.loading())
      }

      return h('div', data, child)
    }
  }
})
