basant307/AI_Governance_Project

1'use strict';2 3const prompts = require('./prompts');4 5const passOn = ['suggest', 'format', 'onState', 'validate', 'onRender', 'type'];6const noop = () => {};7 8/**9 * Prompt for a series of questions10 * @param {Array|Object} questions Single question object or Array of question objects11 * @param {Function} [onSubmit] Callback function called on prompt submit12 * @param {Function} [onCancel] Callback function called on cancel/abort13 * @returns {Object} Object with values from user input14 */15async function prompt(questions=[], { onSubmit=noop, onCancel=noop }={}) {16  const answers = {};17  const override = prompt._override || {};18  questions = [].concat(questions);19  let answer, question, quit, name, type, lastPrompt;20 21  const getFormattedAnswer = async (question, answer, skipValidation = false) => {22    if (!skipValidation && question.validate && question.validate(answer) !== true) {23      return;24    }25    return question.format ? await question.format(answer, answers) : answer26  };27 28  for (question of questions) {29    ({ name, type } = question);30 31    // evaluate type first and skip if type is a falsy value32    if (typeof type === 'function') {33      type = await type(answer, { ...answers }, question)34      question['type'] = type35    }36    if (!type) continue;37 38    // if property is a function, invoke it unless it's a special function39    for (let key in question) {40      if (passOn.includes(key)) continue;41      let value = question[key];42      question[key] = typeof value === 'function' ? await value(answer, { ...answers }, lastPrompt) : value;43    }44 45    lastPrompt = question;46 47    if (typeof question.message !== 'string') {48      throw new Error('prompt message is required');49    }50 51    // update vars in case they changed52    ({ name, type } = question);53 54    if (prompts[type] === void 0) {55      throw new Error(`prompt type (${type}) is not defined`);56    }57 58    if (override[question.name] !== undefined) {59      answer = await getFormattedAnswer(question, override[question.name]);60      if (answer !== undefined) {61        answers[name] = answer;62        continue;63      }64    }65 66    try {67      // Get the injected answer if there is one or prompt the user68      answer = prompt._injected ? getInjectedAnswer(prompt._injected, question.initial) : await prompts[type](question);69      answers[name] = answer = await getFormattedAnswer(question, answer, true);70      quit = await onSubmit(question, answer, answers);71    } catch (err) {72      quit = !(await onCancel(question, answers));73    }74 75    if (quit) return answers;76  }77 78  return answers;79}80 81function getInjectedAnswer(injected, deafultValue) {82  const answer = injected.shift();83    if (answer instanceof Error) {84      throw answer;85    }86 87    return (answer === undefined) ? deafultValue : answer;88}89 90function inject(answers) {91  prompt._injected = (prompt._injected || []).concat(answers);92}93 94function override(answers) {95  prompt._override = Object.assign({}, answers);96}97 98module.exports = Object.assign(prompt, { prompt, prompts, inject, override });99