first project / step ninth / added Prime game, added prime bin, returned Cli.php file

Author: Eksi-tech

Makefile

@@ -16,6 +16,9 @@ brain-gcd:
 brain-progression:
 	bin/brain-progression
 
+brain-prime:
+	bin/brain-prime
+
 validate:
 	composer validate
 

bin/brain-games

@@ -3,4 +3,6 @@
 <?php
 
 require_once __DIR__ . '/../vendor/autoload.php';
-require_once __DIR__ . '/../src/Engine.php';
+require_once __DIR__ . '/../src/Cli.php';
+
+Src\Cli\RunGreeting();

bin/brain-prime

@@ -0,0 +1,9 @@
+#!/usr/bin/env php
+
+<?php
+
+require_once __DIR__ . '/../vendor/autoload.php';
+require_once __DIR__ . '/../src/Engine.php';
+require_once __DIR__ . '/../src/Games/Prime.php';
+
+runGame('Prime');

composer.json

@@ -17,7 +17,8 @@
     "bin/brain-even",
     "bin/brain-calc",
     "bin/brain-gcd",
-    "bin/brain-progression"
+    "bin/brain-progression",
+    "bin/brain-prime"
   ],
 
   "require-dev": {

src/Cli.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace Src\Cli;
+
+use function cli\line;
+use function cli\prompt;
+
+function RunGreeting()
+{
+    line('Welcome to the Brain Game!');
+    $name = prompt('May I have your name?');
+    line("Hello, %s!", $name);
+}

src/Games/Prime.php

@@ -0,0 +1,27 @@
+<?php
+
+function getRules(): string
+{
+    return 'Answer "yes" if given number is prime. Otherwise answer "no".';
+}
+
+function generateQuestion(): int
+{
+    return random_int(1, 101);
+}
+
+function getCorrectAnswer($question): string
+{
+    $number = (int)$question;
+    if ($number < 2) {
+        return 'no';
+    }
+
+    for ($i = 2; $i * $i <= $number; $i++) {
+        if ($number % $i == 0) {
+            return 'no';
+        }
+    }
+
+    return 'yes';
+}