andela-iamao / react-raise

/**

 * Construct questions and ask then using the inquirer module

 * @class Inquire

 */

class Inquire {

  /**

   * Creates an instance of Inquire.

   * @memberOf Inquire

   */

  constructor() {

    this.questions = [];

    this.validate = {

        return (value && ['y', 'n', 'yes', 'no'].indexOf(value.toLowerCase()) !== -1) ?

          true : 'Invalid input to yes/no question';

      }

    };

  }

  /**

   * Add a question to the questions property

   * @param {String} name - name of the question

   * @param {String} type - type of input

   * @param {String} message - body of the message

   * @param {String} validate - validation method to use

   * @returns {Void} - returns nothing

   *

   * @memberOf Inquire

   */

  question(name, type, message, validate) {

    const details = {

      name,

      type,

      message,

      validate: (!validate) ? undefined : this.validate[validate]

    };

    this.questions.push(details);

  }

  /**

   * Combine and ask all the questions in the questions property

   * @param {Function} callback - function to run after user is done with questions

   * @returns {Void} - returns nothing

   * @memberOf Inquire

   */

  ask(callback) {

    return new Promise((resolve) => {

      inquirer.prompt(this.questions).then((answers) => {

        callback(answers);

        resolve(answers);

      });

    });

  }

}

module.exports = Inquire;