feat: implement game prime

Makefile

@@ -26,4 +26,7 @@ brain-gcd:
 	./bin/brain-gcd
 
 brain-progression:
-	./bin/brain-progression
+	./bin/brain-progression
+
+brain-prime:
+	./bin/brain-prime

bin/brain-prime

@@ -0,0 +1,9 @@
+#!/usr/bin/env php
+<?php
+
+use function BrainGames\Engine\runBrainGame;
+
+require_once __DIR__ . '/../src/bootstrap.php';
+
+$module = 'PrimeGame';
+runBrainGame($module);

src/Games/PrimeGame.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace BrainGames\Games\EvenGame;
+
+use const BrainGames\Utils\ModuleUtils\HANDLER_QUESTION;
+use const BrainGames\Utils\ModuleUtils\LOCATION_HANDLERS;
+use const BrainGames\Utils\ModuleUtils\LOCATION_SETTINGS;
+use const BrainGames\Utils\ModuleUtils\SETTING_RULES;
+
+return static function ($module) {
+    $module[LOCATION_SETTINGS][SETTING_RULES] = 'Answer "yes" if given number is prime. Otherwise answer "no".';
+
+    $module[LOCATION_HANDLERS][HANDLER_QUESTION] = function () {
+        $isPrime = function ($number) {
+            if ($number <= 1) {
+                return false;
+            }
+
+            for ($i = 2; $i * $i <= $number; $i++) {
+                if ($number % $i === 0) {
+                    return false;
+                }
+            }
+
+            return true;
+        };
+
+
+        $question = random_int(1, 100);
+        $isPrime = $isPrime($question);
+        return [$question, $isPrime ? 'yes' : 'no'];
+    };
+
+    return $module;
+};