import { useAxios } from '@/hooks/useAxios'

// 파일 다운로드
export const handleFileDown = async (keyNo, zipYn) => {
  const { promiseGet } = useAxios()

  const url = `/api/board/file/download`
  const params = new URLSearchParams({
    keyNo: keyNo,
    zipYn: zipYn,
  })
  const options = { responseType: 'blob' }
  const apiUrl = `${url}?${params.toString()}`

  await promiseGet({ url: apiUrl, option: options })
    .then((resultData) => {
      if (resultData) {
        const blob = new Blob([resultData.data], { type: resultData.headers['content-type'] || 'application/octet-stream' })
        const fileUrl = window.URL.createObjectURL(blob)
        const link = document.createElement('a')

        const contentDisposition = resultData.headers.get('content-disposition')
        let filename = 'filename'
        if (contentDisposition) {
          const matches = contentDisposition.match(/filename="?([^"]+)"?/)
          if (matches && matches[1]) {
            filename = matches[1]
          }
        }

        link.download = decodeURIComponent(filename)
        link.href = fileUrl
        document.body.appendChild(link)
        link.click()
        link.remove()
        window.URL.revokeObjectURL(fileUrl)
      }
    })
    .catch((error) => {
      alert('File does not exist.')
    })
}

// 페이지 번호 생성
export const generateBlockPagination = (currentPage, totalPages, pageBlock) => {
  const currentBlock = Math.ceil(currentPage / pageBlock)

  let startPage = (currentBlock - 1) * pageBlock + 1
  let endPage = startPage + pageBlock - 1

  if (endPage > totalPages) {
    endPage = totalPages
  }

  let pageArr = []

  for (let i = startPage; i <= endPage; i++) {
    pageArr.push(i)
  }

  return pageArr
}