import {TerminalInput} from './TerminalInput';

const yes = ['y', 'yes'];
const no = ['n', 'no'];

const validate = (value: string) => (
  yes.includes(value.toLowerCase()) || no.includes(value.toLowerCase())
);

const getHint = (value: string) => {
  if (value && !validate(value)) {
    return 'Enter yes or no (y/n)';
  }
  return '';
};

export namespace TerminalConfirm {
  export async function ask(question: string, noPrompt?: boolean, answer?: boolean, hint: string = '') {

    if (noPrompt) {
      const yesOrNo = answer ? 'yes' : 'no';
      console.info(`${question}: ${yesOrNo}`);
      return answer;
    }

    const result = await TerminalInput.ask(question, {
      getHint: (value) => getHint(value) || hint,
      validate,
      clearOnInvalidInput: true
    });

    return yes.includes(result.toLowerCase());
  }
}