import { h, ref, Ref, computed, inject, reactive, nextTick, PropType } from 'vue'
import { defineVxeComponent } from '../../../ui/src/comp'
import { VxeUI } from '../../../ui'
import XEUtils from 'xe-utils'
import { parseFile } from '../../../ui/src/utils'
import { errLog } from '../../../ui/src/log'

import type { VxeTablePrivateMethods, VxeTableConstructor, VxeTableMethods, VxeTableDefines } from '../../../../types'

const { getI18n, getIcon, renderEmptyElement } = VxeUI

export default defineVxeComponent({
  name: 'VxeTableImportPanel',
  props: {
    defaultOptions: {
      type: Object as PropType<VxeTableDefines.ImportParamsObj>,
      default: () => ({} as VxeTableDefines.ImportParamsObj)
    },
    storeData: {
      type: Object as PropType<VxeTableDefines.ImportStoreObj>,
      default: () => ({} as VxeTableDefines.ImportStoreObj)
    }
  },
  setup (props) {
    const VxeUIModalComponent = VxeUI.getComponent('VxeModal')
    const VxeUIButtonComponent = VxeUI.getComponent('VxeButton')
    const VxeUISelectComponent = VxeUI.getComponent('VxeSelect')

    const $xeTable = inject('$xeTable', {} as VxeTableConstructor & VxeTableMethods & VxeTablePrivateMethods)
    const { computeImportOpts } = $xeTable.getComputeMaps()

    const reactData = reactive({
      loading: false
    })

    const refFileBtn = ref() as Ref<HTMLButtonElement>

    const computeSelectName = computed(() => {
      const { storeData } = props
      return `${storeData.filename}.${storeData.type}`
    })

    const computeHasFile = computed(() => {
      const { storeData } = props
      return storeData.file && storeData.type
    })

    const computeParseTypeLabel = computed(() => {
      const { storeData } = props
      const { type, typeList } = storeData
      if (type) {
        const selectItem = XEUtils.find(typeList, item => type === item.value)
        return `${selectItem ? selectItem.label : '*.*'}`
      }
      return `*.${typeList.map((item) => item.value).join(', *.')}`
    })

    const clearFileEvent = () => {
      const { storeData } = props
      Object.assign(storeData, {
        filename: '',
        sheetName: '',
        type: ''
      })
    }

    const selectFileEvent = () => {
      const { storeData, defaultOptions } = props
      $xeTable.readFile(defaultOptions).then((params) => {
        const { file } = params
        Object.assign(storeData, parseFile(file), { file })
      }).catch(() => {})
    }

    const showEvent = () => {
      nextTick(() => {
        const targetElem = refFileBtn.value
        if (targetElem) {
          targetElem.focus()
        }
      })
    }

    const cancelEvent = () => {
      const { storeData } = props
      storeData.visible = false
    }

    const importEvent = () => {
      const { storeData, defaultOptions } = props
      const importOpts = computeImportOpts.value
      reactData.loading = true
      $xeTable.importByFile(storeData.file, Object.assign({}, importOpts, defaultOptions)).then(() => {
        reactData.loading = false
        storeData.visible = false
      }).catch(() => {
        reactData.loading = false
      })
    }

    const renderVN = () => {
      const $xeGrid = $xeTable.xeGrid
      const $xeGantt = $xeTable.xeGantt

      const { defaultOptions, storeData } = props
      const selectName = computeSelectName.value
      const hasFile = computeHasFile.value
      const parseTypeLabel = computeParseTypeLabel.value
      const slots = defaultOptions.slots || {}
      const topSlot = slots.top
      const bottomSlot = slots.bottom
      const defaultSlot = slots.default
      const footerSlot = slots.footer
      return VxeUIModalComponent
        ? h(VxeUIModalComponent, {
          id: 'VXE_IMPORT_MODAL',
          modelValue: storeData.visible,
          title: getI18n('vxe.import.impTitle'),
          className: 'vxe-table-export-popup-wrapper',
          width: 540,
          minWidth: 360,
          minHeight: 240,
          mask: true,
          lockView: true,
          showFooter: true,
          escClosable: true,
          maskClosable: true,
          showMaximize: true,
          resize: true,
          loading: reactData.loading,
          'onUpdate:modelValue' (value: any) {
            storeData.visible = value
          },
          onShow: showEvent
        }, {
          default: () => {
            const params = {
              $table: $xeTable,
              $grid: $xeGrid,
              $gantt: $xeGantt,
              options: defaultOptions,
              params: defaultOptions.params as any
            }
            return h('div', {
              class: 'vxe-table-export--panel'
            }, [
              topSlot
                ? h('div', {
                  class: 'vxe-table-export--panel-top'
                }, $xeTable.callSlot(topSlot, params))
                : renderEmptyElement($xeTable),
              h('div', {
                class: 'vxe-table-export--panel-body'
              }, defaultSlot
                ? $xeTable.callSlot(defaultSlot, params)
                : [
                    h('table', {
                      class: 'vxe-table-export--panel-table',
                      cellspacing: 0,
                      cellpadding: 0,
                      border: 0
                    }, [
                      h('tbody', [
                        h('tr', [
                          h('td', getI18n('vxe.import.impFile')),
                          h('td', [
                            hasFile
                              ? h('div', {
                                class: 'vxe-table-export--selected--file',
                                title: selectName
                              }, [
                                h('span', selectName),
                                h('i', {
                                  class: getIcon().INPUT_CLEAR,
                                  onClick: clearFileEvent
                                })
                              ])
                              : h('button', {
                                ref: refFileBtn,
                                class: 'vxe-table-export--select--file',
                                onClick: selectFileEvent
                              }, getI18n('vxe.import.impSelect'))
                          ])
                        ]),
                        h('tr', [
                          h('td', getI18n('vxe.import.impType')),
                          h('td', parseTypeLabel)
                        ]),
                        h('tr', [
                          h('td', getI18n('vxe.import.impMode')),
                          h('td', [
                            VxeUISelectComponent
                              ? h(VxeUISelectComponent, {
                                modelValue: defaultOptions.mode,
                                options: storeData.modeList,
                                'onUpdate:modelValue' (value: any) {
                                  defaultOptions.mode = value
                                }
                              })
                              : renderEmptyElement($xeTable)
                          ])
                        ])
                      ])
                    ])
                  ]
              ),
              bottomSlot
                ? h('div', {
                  class: 'vxe-table-export--panel-bottom'
                }, $xeTable.callSlot(bottomSlot, params))
                : renderEmptyElement($xeTable)
            ])
          },
          footer () {
            const params = {
              $table: $xeTable,
              $grid: $xeGrid,
              $gantt: $xeGantt,
              options: defaultOptions,
              params: defaultOptions.params as any
            }
            return h('div', {
              class: 'vxe-table-export--panel-footer'
            }, footerSlot
              ? $xeTable.callSlot(footerSlot, params)
              : [
                  h('div', {
                    class: 'vxe-table-export--panel-btns'
                  }, [
                    VxeUIButtonComponent
                      ? h(VxeUIButtonComponent, {
                        content: getI18n('vxe.import.impCancel'),
                        onClick: cancelEvent
                      })
                      : renderEmptyElement($xeTable),
                    VxeUIButtonComponent
                      ? h(VxeUIButtonComponent, {
                        status: 'primary',
                        disabled: !hasFile || reactData.loading,
                        content: getI18n('vxe.import.impConfirm'),
                        onClick: importEvent
                      })
                      : renderEmptyElement($xeTable)
                  ])
                ]
            )
          }
        })
        : renderEmptyElement($xeTable)
    }

    nextTick(() => {
      if (!VxeUIModalComponent) {
        errLog('vxe.error.reqComp', ['vxe-modal'])
      }
      if (!VxeUIButtonComponent) {
        errLog('vxe.error.reqComp', ['vxe-button'])
      }
      if (!VxeUISelectComponent) {
        errLog('vxe.error.reqComp', ['vxe-select'])
      }
    })

    return renderVN
  }
})