release 1.0.1: fix composer.json and src/Cli.php

composer.json

@@ -1,6 +1,9 @@
 {
   "name": "igor-i/brain-games",
-  "bin": ["bin/brain-games"],
+  "bin": [
+    "bin/brain-games",
+    "bin/brain-even"
+  ],
   "type": "project",
   "authors": [
     {

src/Cli.php

@@ -9,9 +9,67 @@
 
 use function cli\line;
 
-function run()
+const MULT = 7;
+const INCR = 7;
+const MOD = 10;
+
+function welcome()
 {
     line('Welcome to the Brain Game!');
+}
+
+function hello()
+{
     $name = \cli\prompt('May I have your name?');
-    line("Hello, %s!", $name);
+    line("Hello, %s!" . PHP_EOL, $name);
+
+    return $name;
+}
+
+function theEnd($name, $result = true)
+{
+    if ($result) {
+        line('Congratulations, %s!', $name);
+    } else {
+        line('Let\'s try again, %s!', $name);
+    }
+}
+
+function brainEven()
+{
+    welcome();
+    line('Answer "yes" if number even otherwise answer "no".' . PHP_EOL);
+    $name = hello();
+
+    $currRandom = MULT;
+    $result = true;
+    for ($i = 0; $i < 3; $i++) {
+        line("Question: %s", $currRandom);
+        $answer = \cli\prompt('Your answer');
+        if (isRightAnswer($currRandom, $answer)) {
+            line("Correct!");
+            $currRandom = getNextRandom($currRandom);
+        } else {
+            line("'%s' is wrong answer ;(. Correct answer was '%s'.", $answer, getCorrectAnswer($currRandom));
+            $result = false;
+            break;
+        }
+    }
+
+    theEnd($name, $result);
+}
+
+function getNextRandom($curr)
+{
+    return ($curr * MULT + INCR) % MOD;
+}
+
+function getCorrectAnswer($num)
+{
+    return ($num % 2) ? 'no' : 'yes';
+}
+
+function isRightAnswer($num, $answer)
+{
+    return ($answer == getCorrectAnswer($num)) ? true : false;
 }