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#!/usr/bin/env node
// const { Command, Option } = require('commander'); // (normal include)
const { Command, Option } = require('../'); // include commander in git clone of commander repo
const program = new Command();

// You can use .conflicts() with a single string, which is the camel-case name of the conflicting option.
program
  .command('pay')
  .addOption(new Option('--cash').conflicts('creditCard'))
  .addOption(new Option('--credit-card'))
  .action((options) => {
    if (options.cash) {
      console.log('Paying by cash')
    } else if (options.creditCard) {
      console.log('Paying by credit card')
    } else {
      console.log('Payment method unknown')
    }
  });

  // The default value for an option does not cause a conflict.
  // A value specified using an environment variable is checked for conflicts.
program
  .command('source')
  .addOption(new Option('-p, --port <number>', 'port number for server')
    .default(80)
    .env('PORT')
  ).addOption(new Option('--interactive', 'prompt for user input instead of listening to a port')
    .conflicts('port')
  ).action((options) => {
    if (options.interactive) {
      console.log('What do you want to do today?')
    } else {
      console.log(`Running server on port: ${options.port}`);
    }
  });

// You can use .conflicts() with an array of option names.
// A negated option is not separate from the positive option for conflicts (they have same option name).
program
  .command('paint')
  .addOption(new Option('--summer', 'use a mixture of summer colors').conflicts(['autumn', 'colour']))
  .addOption(new Option('--autumn', 'use a mixture of autumn colors').conflicts(['summer', 'colour']))
  .addOption(new Option('--colour <shade>', 'use a single solid colour'))
  .addOption(new Option('--no-colour', 'leave surface natural'))
  .action((options) => {
    let colour = 'not specified';
    if (options.colour === false) {
      colour = 'natural';
    } else if (options.colour) {
      colour = options.colour;
    } else if (options.summer) {
      colour = 'summer';
    } else if (options.autumn) {
      colour = 'autumn';
    }
    console.log(`Painting colour is ${colour}`);
    });

program.parse();

// Try the following:
//    node options-conflicts.js pay --cash --credit-card
//
//    node options-conflicts.js source
//    node options-conflicts.js source --interactive
//    node options-conflicts.js source --port 8080 --interactive
//    PORT=8080 node options-conflicts.js source --interactive
//
//    node options-conflicts.js paint --colour=red --summer
//    node options-conflicts.js paint --no-colour --autumn