lamed_learn/src/helper_parameter.js

Learning through code templates

// console.log("Starting helper_parameter.js...");
// helper_parameter.js
// Purpose: The purpose of this....
// Date Created: 6/2/2018
// Created by : Perez Lamed van Niekerk
// ------------------------------------------------------
/* jshint esversion: 6 */

const _test = require('lamed_test')
const { Ok, notOk, notOk_Then, Equal, notEqual, con, testAND } = _test // eslint-disable-line
// con.traceSet(0)

// const _io = require('./helper_io')
// const _lio = require('lamed_io')
const _app = require('lamed_consoleapp')
// const _ = require('lodash') // npm install lodash --save
const _filter = require('lodash.filter')
const _uniq = require('lodash.uniq')

function parametersParse (code) {
  let parms = []
  if (code.includes('$')) {
    parms = code.split('$')
    parms[0] = '' // remove first part of the template
    // con.log(parms);
    /* filter out false positives */
    parms = _filter(parms, (item) => {
      /* If these chars is in the parameter -> filter it out */
      var error = item.includesAny(' ', '{', ';', '/', ':', '.', '\r\n')
      if (error === false && item.length <= 1) error = true
      if (error === false) return item
    })
    // con.log({parms});
    parms = _uniq(parms)
    // if (Array.isArray(parms) === false) parms = []
    if (parms.length > 2) parms = []
    // {
    //   throw new Error('Max of two parameters supported! [' + parms + ']')
    // }
  }
  return parms
}

/* Parse the template, remove $END$ and identify parameters */
function parametersGet (code) {
  return new Promise((resolve, reject) => {
    const parms = parametersParse(code)
    if (parms.length === 0) {
      /* There is no parameters */
      resolve('')
    } else {
      /* Get parameter input from the user */
      con.logBold(`\n${code}\n`)

      /* readLine() */
      const QA = parms.replaceAll('_', ' ')
      // _io.IO().readLine(`Please enter '${QA[0]}':`)
      _app.readLine(`Please enter '${QA[0]}':`)
        .then((result) => {
          if (parms.length === 2) {
            /* readLine() */
            // _io.IO().readLine(`Please enter '${QA[1]}':`)
            _app.readLine(`Please enter '${QA[1]}':`)
              .then((result2) => {
                resolve({
                  parameter1: parms[0],
                  keyword1: result,
                  parameter2: parms[1],
                  keyword2: result2
                })
              }).catch(() => resolve(''))
          } else {
            resolve({ parameter1: parms[0], keyword1: result })
          }
        }).catch(() => resolve(''))
    }
  })
}

// Exports --------------------------
module.exports = { parametersParse, parametersGet }