import type { FileInputItem } from './hooks';

export const IMAGE_FILE_EXTENSION_REGEX = /\.(avif|bmp|gif|heic|heif|ico|jpe?g|png|svg|webp)$/i;

export const getFileName = (file: FileInputItem) => {
  if (typeof file === 'string') {
    return file;
  }

  return file.name;
};

export const getFileExtension = (file: FileInputItem) => {
  const parts = getFileName(file).split('.');
  return parts.length > 1 ? `.${parts.pop()}` : '';
};

const isImageFileUrl = (value: string) => {
  const normalizedValue = value.split(/[?#]/)[0] || '';

  return value.startsWith('data:image/') || IMAGE_FILE_EXTENSION_REGEX.test(normalizedValue);
};

export const getImagePreviewSource = (file: FileInputItem) => {
  if (typeof file === 'string') {
    return isImageFileUrl(file) ? file : undefined;
  }

  return undefined;
};