ipfs/src/components/Add/Dropzone.tsx

import React, { useCallback, ReactElement } from 'react'
import { FileWithPath, useDropzone } from 'react-dropzone'
import styles from './Dropzone.module.css'

export default function Dropzone({
  handleOnDrop,
  disabled,
  multiple,
  error
}: {
  handleOnDrop(files: FileWithPath[]): void
  disabled?: boolean
  multiple?: boolean
  error?: string
}): ReactElement {
  const onDrop = useCallback(
    (acceptedFiles) => handleOnDrop(acceptedFiles),
    [handleOnDrop]
  )

  const { getRootProps, getInputProps, isDragActive, isDragReject } =
    useDropzone({ onDrop })

  return (
    <div
      {...getRootProps({
        className: isDragActive
          ? styles.dragover
          : disabled
          ? styles.disabled
          : styles.dropzone
      })}
    >
      <input {...getInputProps({ multiple })} />
      {isDragActive && !isDragReject ? (
        `Drop it like it's hot!`
      ) : multiple === false ? (
        `Drag 'n' drop a file here, or click to select a file.`
      ) : error !== undefined ? (
        <div className={styles.error}>{error}</div>
      ) : (
        `Drag 'n' drop some files here, or click to select files.`
      )}
    </div>
  )
}