dond/cli.js

A library for simulating the hit UK/US game show.

'use strict';

let readline = require('readline');
let rl = readline.createInterface(process.stdin, process.stdout);
let DondGame = require('./index.js');
let usDefaults = require('./settings/deal-us-standard');
let prefix = '> ';

let game = new DondGame(usDefaults.briefcases, usDefaults.casesToPick);

if (!game.isGameSane) {
  console.log('Invalid settings passed in. Please fix.');
  process.exit(-2);
}

let currentState = 'intro';

function whenLineEntered(line) {
  line = line.trim();

  function processIntroState() {
    if (line === '') {
      console.log('Who are you again? You have to have a name.');
    }
    else {
      game.startGame(line);
      console.log(`Welcome ${line}. Now, pick your case.`);
      currentState = 'startGame';
    }
  }

  function processStartGameState() {
    let wantedNumber = Number.parseInt(line, 10);
    let pickedCase = game.pickStartingCase(wantedNumber);
    if (Number.isNaN(pickedCase)) {
      console.log('Invalid case number chosen. Please select a valid case number.');
    }
    else {
      console.log(`You now own case ${pickedCase}.`);
      console.log(`Available cases: ${game.getAvailableCases()}`);
      console.log(`Values in play: ${game.getValuesInPlay()}`);
      console.log(`Please pick ${game.casesToPick} cases, one at a time.`);
      currentState = 'eliminatingCases';
    }
  }

  function processEliminatingCasesState() {
    let wantedNumber = Number.parseInt(line, 10);
    let eliminatedValue = game.pickCase(wantedNumber);
    if (!eliminatedValue) {
      console.log('Invalid case number chosen. Please select a valid case number.');
      console.log(`Available cases: ${game.getAvailableCases()}`);
    }
    else {
      console.log(`Case ${wantedNumber} contained ${eliminatedValue}.`);
      let casesLeftToOpen = game.casesToPick;
      console.log(`Available cases: ${game.getAvailableCases()}`);
      console.log(`Values still in play: ${game.getValuesInPlay()}`);
      if (casesLeftToOpen === 0) {
        // switch the state.
        currentState = 'offerAvailable';
        console.log(`The offer is at ${game.getOffer()}`);
        console.log('Deal or no deal? (Please type "deal" or "nodeal")');
      }
      else {
        console.log(`Please pick another case. There are ${casesLeftToOpen} left to open.`);
      }
    }
  }

  function processOfferAvailableState() {
    if (line !== 'deal' && line !== 'nodeal') {
      console.log(`The offer is at ${game.lastOffer}`);
      console.log('Deal or no deal? (Please type "deal" or "nodeal")');
    }
    else if (line === 'nodeal') {
      let hasMoreRounds = game.sayNoDeal();
      console.log(`Available cases: ${game.getAvailableCases()}`);
      if (hasMoreRounds) {
        console.log(`Please pick ${game.casesToPick} cases, one at a time.`);
        currentState = 'eliminatingCases';
      }
      else {
        console.log(`Your case is worth ${game.revealPlayerCase()}`);
        rl.close();
      }
    }
    else if (line === 'deal') {
      game.sayDeal();
      console.log(`A deal of ${game.lastOffer} has been accepted!`);
      console.log(`Your case contained ${game.revealPlayerCase()}`);
      rl.close();
    }
  }

  switch (currentState) {
    case 'intro':
      processIntroState();
      break;
    case 'startGame':
      processStartGameState();
      break;
    case 'eliminatingCases':
      processEliminatingCasesState();
      break;
    case 'offerAvailable':
      processOfferAvailableState();
      break;
  }

  rl.setPrompt(prefix, prefix.length);
  rl.prompt();
}

function whenLeaving() {
  console.log();
  console.log('Thanks for playing.');
  process.exit(0);
}

rl.on('line', whenLineEntered).on('close', whenLeaving);

console.log('Welcome to Deal or No Deal. Now, who are you?');
rl.setPrompt(prefix, prefix.length);
rl.prompt();