daruk-cli/src/lib/generate/ask.js

init Daruk repository with template

const async = require('async')
const inquirer = require('inquirer')
const evaluate = require('./eval')

// Support types from prompt-for which was used before
const promptMapping = {
  string: 'input',
  boolean: 'confirm'
}

module.exports = function (prompts) {
  return (files, metalsmith, done) => {
    ask(prompts, metalsmith.metadata(), done)
  }
}

/**
 * Ask questions, return results.
 *
 * @param {Object} prompts
 * @param {Object} data
 * @param {Function} done
 */

function ask (prompts, data, done) {
  async.eachSeries(Object.keys(prompts), (key, next) => {
    prompt(data, key, prompts[key], next)
  }, done)
}

/**
 * Inquirer prompt wrapper.
 *
 * @param {Object} data
 * @param {String} key
 * @param {Object} prompt
 * @param {Function} done
 */

function prompt (data, key, prompt, done) {
  // skip prompts whose when condition is not met
  if (prompt.when && !evaluate(prompt.when, data)) {
    return done()
  }

  let promptDefault = prompt.default
  if (typeof prompt.default === 'function') {
    promptDefault = function () {
      return prompt.default.bind(this)(data)
    }
  }

  inquirer.prompt([{
    type: promptMapping[prompt.type] || prompt.type,
    name: key,
    message: prompt.message || prompt.label || key,
    default: promptDefault,
    choices: prompt.choices || [],
    validate: function (res) {
      if (!prompt.required) {
        return true
      }
      const msg = `${prompt.message} cannot be empty`
      if (typeof res === 'string') {
        return res !== '' || msg
      }
      if (Array.isArray(res)) {
        return res.length > 0 || msg
      }
      if (Object.prototype.toString.call(res) === '[object Object]') {
        return Object.keys(res).length > 0 || msg
      }
      return true
    }
  }]).then(answers => {
    if (Array.isArray(answers[key])) {
      data[key] = {}
      answers[key].forEach(multiChoiceAnswer => {
        data[key][multiChoiceAnswer] = true
      })
    } else if (typeof answers[key] === 'string') {
      data[key] = answers[key].replace(/"/g, '\\"')
    } else {
      data[key] = answers[key]
    }
    done()
  }).catch(done)
}