PavelDeuce/backend-project-lvl3

import path from 'path';

export const transformToKebabNotation = (link) => {
  if (link.length === 0) return '';
  const { host = '', pathname } = new URL(link);
  const replaceValue = '-';
  const name = `${host}${pathname}`.replace(/[^a-z1-9]/g, replaceValue);
  return name
    .split(replaceValue)
    .filter((el) => el)
    .join(replaceValue);
};

export const linkTypesMapping = {
  html: 'html',
  file: 'file',
  directory: 'directory',
};

export const createLinkPath = (link, type = linkTypesMapping.file) => {
  const kebabLink = transformToKebabNotation(link);
  const htmlExtension = '.html';
  switch (type) {
    case linkTypesMapping.html:
      return `${kebabLink}${htmlExtension}`;
    case linkTypesMapping.directory:
      return `${kebabLink}_files`;
    case linkTypesMapping.file: {
      const extension = path.extname(link) || htmlExtension;
      const linkWithoutExtension = link.replace(extension, '');
      return `${transformToKebabNotation(linkWithoutExtension)}${extension}`;
    }
    default:
      throw new Error(`Unknown type - ${type}`);
  }
};