import { DataGridTypes, IFormatProps } from 'devextreme-react/data-grid'
import { DataType, HorizontalEdge, SortOrder, ValidationRule } from 'devextreme/common'
import CustomStore from 'devextreme/data/custom_store'
import { SelectedFilterOperation } from 'devextreme/ui/data_grid'
import { dynamicFetch } from '../services/form.service'
import { useLocalization } from '../utils/hooks/useLocalization'
import { addCss } from '../views/list/Utils'
import { useDialogContext } from '../views/shared/DialogContext'
import { usePWA } from '../utils/hooks/usePWA'
import { usePermission } from '../utils/hooks/usePermission'
import { GridColumnData } from '../views/list/GridColumnData'
import {
  ColumnFormatDto,
  EditingFormItemDto,
  GridDto,
  PlatformEditorTypes,
  UiCommandButtonPositionTypeEnum,
  UiLookupDataSourceTypeEnum,
} from '../proxy/form/models'

const cellTemplateMultiValue = (
  cellElement: HTMLElement,
  cellInfo: DataGridTypes.ColumnCellTemplateData<any, any>,
) => {
  if (cellInfo?.value) {
    const text = Array.isArray(cellInfo.value)
      ? cellInfo.value
          .map((a: any) => {
            const { lookup } = cellInfo.column
            if (lookup && lookup.calculateCellValue) {
              return lookup.calculateCellValue(a)
            }

            return ''
          })
          .join(', ')
      : cellInfo.value

    cellElement.textContent = text
    cellElement.title = text
  }
}

function calculateFilterExpressionMultiValue(
  this: DataGridTypes.Column,
  filterValue: any,
  selectedFilterOperation: string | null,
): string | Array<any> {
  if (filterValue) {
    if (selectedFilterOperation == '=' || selectedFilterOperation === null) {
      return [this.dataField, 'contains', filterValue]
    } else if (selectedFilterOperation == '<>') {
      return [this.dataField, 'notcontains', filterValue]
    } else {
      return [this.dataField, selectedFilterOperation, filterValue]
    }
  } else {
    // filterValue null ise isblank veya isnotblank secilmistir
    if (selectedFilterOperation === '=') {
      return [
        this.dataField,
        selectedFilterOperation,
        filterValue,
        'or',
        this.dataField,
        selectedFilterOperation,
        ' ',
      ]
    } else if (selectedFilterOperation === '<>') {
      return [
        this.dataField,
        selectedFilterOperation,
        filterValue,
        'and',
        this.dataField,
        selectedFilterOperation,
        ' ',
      ]
    } else {
      return [this.dataField, selectedFilterOperation, filterValue]
    }
  }
}

const useListFormColumns = ({
  gridDto,
  listFormCode,
  isSubForm,
}: {
  gridDto?: GridDto
  listFormCode: string
  isSubForm?: boolean
}) => {
  const dialog: any = useDialogContext()
  const { translate } = useLocalization()
  const { checkPermission } = usePermission()
  const isPwaMode = usePWA()

  const lookupDataSource = (options: any, colData: any, listFormCode: string) => {
    const { lookupDto } = colData
    const filters = []
    if (lookupDto.cascadeParentFields) {
      if (lookupDto.dataSourceType == UiLookupDataSourceTypeEnum.StaticData) {
        filters.push([
          lookupDto?.cascadeRelationField,
          lookupDto?.cascadeFilterOperator,
          options?.data[lookupDto?.cascadeParentField],
        ])
        //TODO: Statik data test edilecek
      } else {
        const data = options?.data ?? options
        for (const cascadeParentField of lookupDto.cascadeParentFields.split(',')) {
          filters.push(data[cascadeParentField])
        }
      }
    }
    //UiLookupDataSourceTypeEnum :
    // Data = 1 (Statik Data),
    // Query = 2 (API'den geliyor fakat API query çalıştırıyor)
    // WebService = 3 (API servisten geliyor)
    if (lookupDto.dataSourceType == UiLookupDataSourceTypeEnum.StaticData) {
      return createLookupStaticDataSource(
        () => JSON.parse(lookupDto?.lookupQuery),
        filters.length ? filters : null,
      )
    } else if (lookupDto.dataSourceType == UiLookupDataSourceTypeEnum.Query) {
      return createLookupQueryDataSource(listFormCode, colData.fieldName, filters)
    } else if (lookupDto.dataSourceType == UiLookupDataSourceTypeEnum.WebService) {
      return createLookupApiDataSource(
        listFormCode,
        lookupDto?.lookupQuery,
        filters,
        colData.lookupDto?.valueExpr?.toLowerCase(),
      )
    } else {
      return {
        store: [],
      }
    }
  }

  const createLookupStaticDataSource = (
    load: () => any,
    filter: any = null,
    key: any = 'key',
    sort: any = 'name',
  ) => ({
    store: new CustomStore({
      key,
      loadMode: 'raw',
      load,
    }),
    sort,
    filter,
  })

  const createLookupQueryDataSource = (
    listFormCode?: string,
    listFormFieldName?: string,
    filters?: any[],
  ) => {
    return new CustomStore({
      loadMode: 'raw',
      load: async (loadOptions) => {
        if (!isSubForm && listFormCode && !window.location.pathname.includes(listFormCode)) {
          return
        }

        try {
          const response = await dynamicFetch('list-form-select/lookup', 'POST', null, {
            listFormCode,
            listFormFieldName,
            filters,
          })

          return response.data.map((a: any) => ({
            key: a.Key,
            name: a.Name,
            group: a.Group,
          }))
        } catch (error: any) {
          // toast.push(
          //   <Notification type="danger" duration={2000}>
          //     Select error
          //     {error.toString()}
          //   </Notification>,
          //   {
          //     placement: 'top-end',
          //   },
          // )
          return null
        }
      },
    })
  }

  const createLookupApiDataSource = (
    listFormCode?: string,
    lookupQuery?: string,
    filters?: any[],
    keyName?: string,
  ) => {
    return new CustomStore({
      key: keyName,
      loadMode: 'raw',
      load: async (loadOptions) => {
        //Sayfa degismisse istek yapma
        if (!isSubForm && listFormCode && !window.location.pathname.includes(listFormCode)) {
          return
        }
        if (!lookupQuery) {
          return
        }

        const [method, url, body, keySelector, nameSelector, groupSelector] = lookupQuery.split(';')
        //POST;https://tcmb.gov.tr/api/doviz;{"dovizType":@param0};a=>a.DovizId;a=>a.DovizName;a=>a.Ulke

        //TODO: Body dinamik params test edilecek
        if (filters?.length) {
          for (let i = 0; i < filters.length; i++) {
            body.replace(`@param${i}`, filters[i])
          }
        }

        try {
          const response = await dynamicFetch(url, method, null, body)
          let { data } = response
          if (!data) {
            // toast.push(
            //   <Notification type="danger" duration={2000}>
            //     {'Lookup Datası boş geldi.'}
            //   </Notification>,
            //   {
            //     placement: 'top-end',
            //   },
            // )
            return
          }

          if (!Array.isArray(data)) {
            data = [data]
          }

          return data.map((a: any) => ({
            key: eval(keySelector),
            name: eval(nameSelector),
            group: eval(groupSelector),
          }))
        } catch {
          // toast.push(
          //   <Notification type="danger" duration={2000}>
          //     {'Network error'}
          //   </Notification>,
          //   {
          //     placement: 'top-end',
          //   },
          // )
          return
        }
      },
    })
  }

  const getCommandColumn = (): GridColumnData | undefined => {
    if (!gridDto) {
      return
    }

    const hasUpdate =
      gridDto.gridOptions.editingOptionDto.allowUpdating &&
      checkPermission(gridDto.gridOptions.permissionDto.u)

    const hasDelete =
      gridDto.gridOptions.editingOptionDto.allowDeleting &&
      checkPermission(gridDto.gridOptions.permissionDto.d)

    const hasCommandButtons = gridDto.gridOptions.commandColumnDto.length > 0

    // Eğer hiçbir buton eklenecek durumda değilse: çık
    if (!hasUpdate && !hasDelete && !hasCommandButtons) {
      return
    }

    const column = {
      type: 'buttons',
      width: 'auto',
      buttons: [] as any,
    }

    if (hasUpdate) {
      column.buttons.push('edit')
    }

    if (hasDelete) {
      column.buttons.push('delete')
    }

    gridDto.gridOptions.commandColumnDto.forEach((action) => {
      if (action.buttonPosition !== UiCommandButtonPositionTypeEnum.CommandColumn) return
      if (!checkPermission(action.authName)) return

      const item = {
        visible: true,
        hint: action.hint,
        icon: action.icon,
        text: translate('::' + action.text),
        onClick: (e: any) => {
          if (typeof e.event?.preventDefault === 'function') {
            e.event.preventDefault()
          }

          if (action.url) {
            let url = action.url?.replace('@LISTFORMCODE', listFormCode)
            gridDto.columnFormats.forEach((field) => {
              if (field.fieldName) {
                url = url.replace(`@${field.fieldName}`, e.row.data[field.fieldName])
              }
            })
            window.open(url, isPwaMode ? '_self' : action.urlTarget)
          } else if (action.dialogName) {
            if (action.dialogParameters) {
              const dynamicMap = JSON.parse(action.dialogParameters)
              for (const [key, value] of Object.entries<string>(dynamicMap)) {
                dynamicMap[key] = value.startsWith('@') ? e.row.data[value.replace('@', '')] : value
              }
              dialog.setConfig({
                component: action.dialogName,
                props: dynamicMap,
              })
            }
          } else if (action.onClick) {
            eval(action.onClick)
          }
        },
      }

      column.buttons.push(item)
    })

    return column as GridColumnData
  }

  const getColumns = (columnFormats: ColumnFormatDto[]) => {
    const columns: GridColumnData[] = []

    if (!gridDto || !columnFormats) {
      return columns
    }
    columnFormats.forEach((colData) => {
      if (!colData.canRead || !colData.isActive) {
        return
      }
      const column: GridColumnData = {}
      column.colData = colData // Onemli: Baska event-callback lerde kullanmak icin eklendi, colData.lookupDto?.editorTemplateType
      //column.showEditorAlways = true
      column.dataField = colData.fieldName
      if (colData.dataType) column.dataType = colData.dataType as DataType
      if (colData.captionName) column.caption = translate('::' + colData.captionName)
      if (colData.width > 0) column.width = colData.width
      column.visible = colData.visible

      column.alignment = colData.alignment
      column.format = colData.format
      column.editorOptions = { ...(colData.editorOptions as IFormatProps) }

      // columnCustomizationDto
      column.fixed = colData.columnCustomizationDto?.fixed
      column.fixedPosition = colData.columnCustomizationDto?.fixedPosition as HorizontalEdge
      column.allowReordering = colData.columnCustomizationDto?.allowReordering

      // sort
      if (colData.sortIndex >= 0) {
        column.sortIndex = colData.sortIndex
        column.sortOrder = colData.sortDirection as SortOrder
      }

      // filterRow
      column.allowFiltering = colData.columnFilterDto?.allowFiltering
      column.selectedFilterOperation = colData.columnFilterDto
        ?.selectedFilterOperation as SelectedFilterOperation
      column.filterValue = colData.columnFilterDto?.filterValue

      // headerFilter
      column.allowHeaderFiltering = colData.columnHeaderDto?.allowHeaderFiltering
      if (column.allowHeaderFiltering == true) {
        column.headerFilter = {}
        column.headerFilter.allowSearch = colData.columnHeaderDto?.allowSearch
        column.headerFilter.dataSource = colData.columnHeaderDto?.dataSource
      }

      // search
      column.allowSearch = colData.allowSearch

      //export
      column.allowExporting = colData.canExport

      // grouping
      column.allowGrouping = colData.columnGroupingDto?.allowGrouping
      //if (colData.columnGroupingDto?.groupIndex > 0)
      //    column.groupIndex = colData.columnGroupingDto?.groupIndex;
      //column.autoExpandGroup = colData.columnGroupingDto?.autoExpandGroup;

      // constsa dinamik olarak css verilerini ekle
      if (colData.columnCssClass) {
        column.cssClass = colData.columnCssClass
        if (colData.columnCssValue) {
          addCss(colData.columnCssValue)
        }
      }

      column.allowEditing = colData.columnEditingDto?.allowEditing

      // #region lookup ayarlari
      if (colData.lookupDto?.dataSourceType) {
        // UiColumnEditorTemplateTypeEnum : None:0, Table:1, TagBox:2
        const allItems = gridDto.gridOptions.editingFormDto.flatMap((group) => group.items)
        const formItem = allItems.find((a) => a?.dataField === colData.fieldName)
        if (formItem?.editorType2 === PlatformEditorTypes.dxTagBox) {
          column.extras = {
            multiValue: true,
            editorOptions: formItem.editorOptions,
            tagBoxOptions: formItem.tagBoxOptions,
          }
          column.editCellTemplate = 'cellEditTagBox'
          column.calculateFilterExpression = calculateFilterExpressionMultiValue
          column.cellTemplate = cellTemplateMultiValue
        } else if (formItem?.editorType2 === PlatformEditorTypes.dxGridBox) {
          column.extras = {
            multiValue: false,
            editorOptions: formItem.editorOptions,
            gridBoxOptions: formItem.gridBoxOptions,
          }
          column.editCellTemplate = 'cellEditGridBox'
          column.cellTemplate = cellTemplateMultiValue
          if (formItem.gridBoxOptions?.selectionMode === 'multiple') {
            column.calculateFilterExpression = calculateFilterExpressionMultiValue
            column.extras.multiValue = true
          }
        }

        column.lookup = {
          valueExpr: colData.lookupDto?.valueExpr?.toLowerCase(),
          displayExpr: colData.lookupDto?.displayExpr?.toLowerCase(),
          dataSource: (o) => lookupDataSource(o, colData, listFormCode),
        }
        //column.lookup.dataSource = lookupDataSource(null, colData)

        //cascadeEmptyFields verisi dolu ise bu kolon/field bir parent field dir
        if (colData.lookupDto.cascadeEmptyFields) {
          // parent field guncellendigi zaman bu fonksiyon cagrilir
          column.setCellValue = function (rowData: any, value: any) {
            if (!colData.fieldName) return
            //console.log({ rowData, value, colData })
            rowData[colData.fieldName] = Array.isArray(value) ? value[0] : value
            // cascadeEmptyFields alani aralarinda virgul olacak sekilde bosaltilmak istenen alanlari saklar
            colData?.lookupDto?.cascadeEmptyFields?.split(',').forEach((emptyField: any) => {
              rowData[emptyField] = null
            })
          }
        }
      }
      // #endregion
      if (colData.validationRuleDto) {
        // for server side validation : https://js.devexpress.com/Demos/WidgetsGallery/Demo/DataGrid/DataValidation/jQuery/Light/
        column.validationRules = colData.validationRuleDto as ValidationRule[]
      }

      columns.push(column)
    })

    return columns
  }

  const getBandedColumns = () => {
    if (!gridDto) {
      return
    }

    const columns: GridColumnData[] = []
    const insertedColumns: (string | undefined)[] = []

    const commandColumn = getCommandColumn()
    if (commandColumn) {
      columns.push(commandColumn)
    }

    for (const col of gridDto.columnFormats) {
      if (!col.fieldName) {
        return
      }
      if (insertedColumns.some((a) => a === col.fieldName)) {
        // kolon zaten eklenmis ise islem yapma
        return
      }

      if (col.bandName) {
        // banded kolon ise; en fazla iki kirilima kadar eklenir
        const bands = col.bandName.split(':') // ic ice banded kolon const ise aralarinda : kullanilir
        if (bands.length > 1) {
          // band + band + column seklinde ise      :

          let topBand = columns.find((e) => e.caption == bands[0] && e.isBand == true)
          if (!topBand) {
            // en ustteki band ilk defa ekleniyor ise
            topBand = { caption: bands[0], columns: [] as GridColumnData[], isBand: true }
            columns.push(topBand)
          }
          topBand.columns ??= [] as GridColumnData[]

          const band2 = { caption: bands[1], columns: [] as GridColumnData[], isBand: true }
          topBand.columns.push(band2)

          const rData = gridDto.columnFormats.filter((e) => e.bandName == col.bandName)
          const cols = getColumns(rData) as GridColumnData[]
          band2.columns.push(...cols)
          insertedColumns.push(...cols.map((e) => e.dataField))
        } else {
          // band + column
          const band = { caption: bands[0], columns: [] as GridColumnData[], isBand: true }
          const rData = gridDto.columnFormats.filter((e) => e.bandName == bands[0])
          const cols = getColumns(rData) as GridColumnData[]
          band.columns.push(...cols)
          columns.push(band)
          insertedColumns.push(...cols.map((e) => e.dataField))
        }
      } else {
        // band a bagli olmayan kolonlar
        const cols = getColumns([col])
        //console.log({ col, cols: JSON.stringify(cols) })
        columns.push(...cols)
        insertedColumns.push(...cols.map((e) => e.dataField))
      }
    }

    // FormEditingExtraItem
    // Devexpress Gridde kaydete basılınca
    // formda gözükecek olan EditingFormDto.Items elemanları gelmiyor
    // Sadece grid'de tanımlanmış columnları getiriyor.
    // Bu elemanları da getirmesi için aşağıdaki şekilde,
    // columns'da olmayan alanları da gizli olarak ekliyoruz
    if (columns?.length) {
      gridDto.gridOptions.editingFormDto.forEach((group) => {
        group.items?.forEach((item: EditingFormItemDto) => {
          if (!columns.some((a) => a.dataField === item.dataField)) {
            columns.push({
              dataField: item.dataField,
              visible: false,
              showInColumnChooser: false,
            })
            insertedColumns.push(item.dataField)
          }
        })
      })
    }

    return columns
  }

  return {
    getBandedColumns,
  }
}

export { useListFormColumns }