import {useRef} from 'react'

/** button that opens file upload window */
export function FileUploadButton(props: {
  onFiles: (files: File[]) => void
  className?: string
  children?: React.ReactNode
  disabled?: boolean
}) {
  const {onFiles, className, children, disabled} = props
  const ref = useRef<HTMLInputElement>(null)
  return (
    <>
      <button
        type={'button'}
        className={className}
        disabled={disabled}
        onClick={() => ref.current?.click()}
      >
        {children}
      </button>
      <input
        ref={ref}
        type="file"
        accept=".gif,.jpg,.jpeg,.png,.webp, image/*"
        multiple
        className="hidden"
        onChange={(e: React.ChangeEvent<HTMLInputElement>) => {
          const files = e.target.files
          if (files) {
            onFiles(Array.from(files))
            if (ref.current) {
              ref.current.value = '' // clear file input in case user reuploads
            }
          }
        }}
      />
    </>
  )
}