/* ---------------------------------------------- *
 * ------------------ classes ------------------- *
 * ---------------------------------------------- */
export class GitRepo {
  host: string;
  user: string;
  repo: string;
  accessToken?: string;
  sshUrl: string;
  httpsUrl: string;
  constructor(stringArg: string, tokenArg?: string) {
    const regexMatches = gitRegex(stringArg);
    if (!regexMatches) {
      throw new Error(`Invalid git repository URL: ${stringArg}`);
    }
    this.host = regexMatches[1];
    this.user = regexMatches[2];
    this.repo = regexMatches[3];
    this.accessToken = tokenArg;
    this.sshUrl = gitLink(this.host, this.user, this.repo, this.accessToken, 'ssh');
    this.httpsUrl = gitLink(this.host, this.user, this.repo, this.accessToken, 'https');
  }
}

/* ---------------------------------------------- *
 * ------------------ helpers ------------------- *
 * ---------------------------------------------- */
const gitRegex = function (stringArg: string): RegExpExecArray | null {
  const regexString =
    /([a-zA-Z0-9\-_\.]*)(?:\/|\:)([a-zA-Z0-9\-_\.]*)(?:\/)([a-zA-Z0-9\-_\.]*)(?:\.git)/;
  const regexMatches = regexString.exec(stringArg);
  return regexMatches;
};

const gitLink = function (
  hostArg: string,
  userArg: string,
  repoArg: string,
  tokenArg = '',
  linkTypeArg: 'https' | 'ssh'
): string {
  if (tokenArg !== '') {
    tokenArg = tokenArg + '@';
  }
  switch (linkTypeArg) {
    case 'https':
      return 'https://' + tokenArg + hostArg + '/' + userArg + '/' + repoArg + '.git';
    case 'ssh':
      return 'git@' + hostArg + ':' + userArg + '/' + repoArg + '.git';
  }
};