start a restructure

Structural/Facade/Facade.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace DesignPatterns\Facade;
+
+/**
+ *
+ * 
+ */
+class Facade
+{
+    /**
+     * @var OsInterface
+     */
+    protected $os;
+
+    /**
+     * @var BiosInterface
+     */
+    protected $bios;
+
+    /**
+     * This is the perfect time to use a dependency injection container
+     * to create an instance of this class
+     *
+     * @param BiosInterface $bios
+     * @param OsInterface   $os
+     */
+    public function __construct(BiosInterface $bios, OsInterface $os)
+    {
+        $this->bios = $bios;
+        $this->os = $os;
+    }
+
+    /**
+     * turn on the system
+     */
+    public function turnOn()
+    {
+        $this->bios->execute();
+        $this->bios->waitForKeyPress();
+        $this->bios->launch($this->os);
+    }
+
+    /**
+     * turn off the system
+     */
+    public function turnOff()
+    {
+        $this->os->halt();
+        $this->bios->powerDown();
+    }
+}