import * as URL from 'url';
import { GitRepoTemplate } from './repo-template-entity';
import * as path from 'path';
import { InitError } from '../error/init-error';


export function parse(url: string): URL.Url {
  return URL.parse(url);
}

export function getProjectNameFromUrl(url: string) {
  let slash = url.lastIndexOf('/');
  if (slash && slash >= 0) {
    url = url.substr(slash + 1);
  }

  if (url.endsWith('.git')) {
    return url.substr(0, url.length - 4);
  }
  return url;
}

export function isUrlFormat(url: string) {
  return url.includes(':') || url.includes('/');
}

export function extractTemplateInfo(url: URL.Url) : GitRepoTemplate {
  let pathname = url.pathname || '';
  if (pathname.endsWith('.git')) {
    pathname = pathname.substr(0, pathname.length - 4);
  }
  const pathArr = pathname.split('/');
  if (pathArr.length < 3) {
    throw new InitError('Git repo url not correct.');
  }
  const ownerName = pathArr[1];
  const repoName = pathArr[2];
  const branch = (pathArr.length < 5) ? 'master' : pathArr[4];
  const hasSubPath = pathArr.length > 5;
  let subPath = '';
  if (hasSubPath) {
    subPath = path.join.apply(null, pathArr.slice(5));
  }

  let zipFile = '';
  if (url.hostname && url.hostname.includes('github')) {
    zipFile = `${url.protocol}//${url.host}/${ownerName}/${repoName}/archive/${branch}.zip`;
  }

  return {
    host: url.host,
    ownerName: ownerName,
    repoName: repoName,
    branch: branch,
    hasSubPath: hasSubPath,
    subPath: subPath,
    zipFile: zipFile
  };
}