import type { BookType } from 'xlsx'
import { flatten } from 'flat'
import {
  ChevronDownIcon,
  DownloadIcon,
  FileSpreadsheetIcon,
  FileTextIcon
} from 'lucide-react'
import * as XLSX from 'xlsx'

import {
  DropdownMenu,
  DropdownMenuContent,
  DropdownMenuGroup,
  DropdownMenuItem,
  DropdownMenuTrigger
} from './ui/dropdown-menu'
import { Button } from './ui/button'

export function ExportMenu({
  name,
  headers,
  selectedRows = []
}: {
  name: string
  headers: Record<string, string>
  selectedRows: object[]
}) {
  const exportFile = (bookType: BookType) => () => {
    if (!selectedRows.length) {
      return
    }
    const header = Object.keys(headers)
    const data = selectedRows.map((data) => {
      const obj: Record<string, string> = flatten(data)
      return Object.fromEntries(header.map((k) => [k, obj?.[k]]))
    })
    const workbook = XLSX.utils.book_new()
    const worksheet = XLSX.utils.json_to_sheet(data, { header })

    XLSX.utils.sheet_add_aoa(worksheet, [Object.values(headers)], {
      origin: 'A1'
    })
    XLSX.utils.book_append_sheet(workbook, worksheet, 'Sheet1')
    XLSX.writeFile(workbook, `${name}_${+new Date()}.${bookType}`, {
      bookType,
      compression: true
    })
  }

  return (
    <DropdownMenu>
      <DropdownMenuTrigger asChild>
        <Button variant="outline" className="cursor-pointer">
          <DownloadIcon /> Baixar <ChevronDownIcon />
        </Button>
      </DropdownMenuTrigger>
      <DropdownMenuContent className="w-52" align="start">
        <DropdownMenuGroup className="*:cursor-pointer">
          <DropdownMenuItem onClick={exportFile('xlsx')}>
            <FileSpreadsheetIcon /> Microsoft Excel (.xlsx)
          </DropdownMenuItem>
          <DropdownMenuItem onClick={exportFile('csv')}>
            <FileTextIcon /> CSV (.csv)
          </DropdownMenuItem>
        </DropdownMenuGroup>
      </DropdownMenuContent>
    </DropdownMenu>
  )
}