createGroups

const path = require('path');
const { program, InvalidArgumentError } = require('commander');

const groupsGenerator = require('./src/groupGenerator');

function myParseInt(value) {
  const parsedValue = parseInt(value, 10);
  // eslint-disable-next-line no-restricted-globals
  if (isNaN(parsedValue) || value === true) {
    throw new InvalidArgumentError('Not a number');
  }
  return parsedValue;
}

program
  .name('Random Group Generator')
  .description('This script creates a random groups from a list of names, can be seeded')
  .version('1.0.0');

program
  .argument('<filepath>', 'input filepath containing list of names')
  .option('-g, --groups <number>', 'number of groups', myParseInt, 2)
  .option('-o, --output <filepath>', 'output filepath', './output.txt')
  .option('-s, --seed <string>', 'Seed for the randomizer', undefined)
  .action((filepath, options) => {
    const {
      groups,
      seed,
      output,
    } = options;

    const inputPath = path.join(__dirname, filepath);
    const outputPath = path.join(__dirname, output);

    groupsGenerator({
      inputPath,
      outputPath,
      groupsNumber: groups,
      seed,
    });
  });

program.addHelpText('after', `

Example call:
  $ node createGroups ./input.txt -g 28`);

program.parse();