diff --git a/.gitignore b/.gitignore
new file mode 100644
index 000000000..23a84b44d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+.idea/
+/vendor/
+.env
+/helpers/
\ No newline at end of file
diff --git a/README.md b/README.md
index e16b2a49b..0eb8a186d 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,11 @@
-# PHP_2023
+# Homework 16. Design patterns
 
-https://otus.ru/lessons/razrabotchik-php/?utm_source=github&utm_medium=free&utm_campaign=otus
+
+Разрабатываем часть интернет-ресторана. Продаёт он фаст-фуд.
+
+1. Абстрактная фабрика будет отвечать за генерацию базового продукта-прототипа: бургер, сэндвич или хот-дог
+2. При готовке каждого типа продукта Декоратор будет добавлять составляющие к базовому продукту либо по рецепту, либо по пожеланию клиента (салат, лук, перец и т.д.)
+3. Наблюдатель подписывается на статус приготовления и отправляет оповещения о том, что изменился статус приготовления продукта.
+4. Адаптер используем для сущности пицца.
+5. Строитель будет отвечать за то, что нужно приготовить.
+6. Все сущности должны по максимуму генерироваться через DI.
diff --git a/composer.json b/composer.json
new file mode 100644
index 000000000..0d72d3ad3
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,15 @@
+{
+    "name": "dmitry/hw16",
+    "type": "project",
+    "autoload": {
+        "psr-4": {
+            "Dmitry\\Hw16\\": "src/"
+        }
+    },
+    "authors": [
+        {
+            "name": "Dmitry Aleynik"
+        }
+    ],
+    "require": {}
+}
diff --git a/index.php b/index.php
new file mode 100644
index 000000000..3623b3741
--- /dev/null
+++ b/index.php
@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+require 'vendor/autoload.php';
+
+use Dmitry\Hw16\App;
+
+
+try {
+    $app = new App();
+    $app->run();
+} catch (\Exception $e) {
+    throw new \Exception($e->getMessage());
+}
diff --git a/src/App.php b/src/App.php
new file mode 100644
index 000000000..24b71cacd
--- /dev/null
+++ b/src/App.php
@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Dmitry\Hw16;
+
+use Dmitry\Hw16\Application\Adapter\PizzaAdapter;
+use Dmitry\Hw16\Application\Decorator\OnionDecorator;
+use Dmitry\Hw16\Application\Decorator\PepperDecorator;
+use Dmitry\Hw16\Application\Decorator\SaladDecorator;
+use Dmitry\Hw16\Application\Factory\BurgerFactory;
+use Dmitry\Hw16\Application\Factory\ProductFactory;
+use Dmitry\Hw16\Application\Publisher\Publisher;
+use Dmitry\Hw16\Application\Services\CookingInterface;
+use Dmitry\Hw16\Application\Services\CookingService;
+use Dmitry\Hw16\Application\UseCase\CookingUseCase;
+
+class App
+{
+    private CookingInterface $cookingService;
+
+    public function __construct()
+    {
+        $this->cookingService = new CookingService(new Publisher());
+    }
+
+    public function run(): void
+    {
+        $burger = ProductFactory::makeFood('burger');
+        $sandwich = new PepperDecorator(new OnionDecorator(new SaladDecorator(ProductFactory::makeFood('sandwich'))));
+        $pizza = new PizzaAdapter();
+        $usecase = new CookingUseCase();
+        $usecase($this->cookingService, $burger, $sandwich, $pizza);
+    }
+}
diff --git a/src/Application/Adapter/PizzaAdapter.php b/src/Application/Adapter/PizzaAdapter.php
new file mode 100644
index 000000000..f9a5f22a0
--- /dev/null
+++ b/src/Application/Adapter/PizzaAdapter.php
@@ -0,0 +1,31 @@
+<?php
+
+namespace Dmitry\Hw16\Application\Adapter;
+
+use Dmitry\Hw16\Domain\Entity\Pizza;
+use Dmitry\Hw16\Domain\Entity\ProductInterface;
+
+class PizzaAdapter implements ProductInterface
+{
+    private ProductInterface $pizza;
+
+    public function __construct()
+    {
+        $this->createPizza();
+    }
+
+    private function createPizza(): void
+    {
+        $this->pizza = new Pizza();
+    }
+
+    public function getName(): string
+    {
+        return $this->pizza->getName();
+    }
+
+    public function makeCooked(): void
+    {
+        $this->pizza->makeCooked();
+    }
+}
diff --git a/src/Application/Builder/ProductBuilder.php b/src/Application/Builder/ProductBuilder.php
new file mode 100644
index 000000000..e416ca40e
--- /dev/null
+++ b/src/Application/Builder/ProductBuilder.php
@@ -0,0 +1,44 @@
+<?php
+
+namespace Dmitry\Hw16\Application\Builder;
+
+use Dmitry\Hw16\Application\Decorator\OnionDecorator;
+use Dmitry\Hw16\Application\Decorator\PepperDecorator;
+use Dmitry\Hw16\Application\Decorator\SaladDecorator;
+use Dmitry\Hw16\Domain\Entity\ProductInterface;
+
+class ProductBuilder
+{
+    private ProductInterface $product;
+
+    public function __construct(ProductInterface $product)
+    {
+        $this->product = $this->product;
+    }
+
+
+    public function addOnion(): self
+    {
+        $this->product = new OnionDecorator($this->product);
+        return $this;
+    }
+
+    public function addPepper(): self
+    {
+        $this->product = new PepperDecorator($this->product);
+        return $this;
+    }
+
+
+    public function addSalad(): self
+    {
+        $this->product = new SaladDecorator($this->product);
+        return $this;
+    }
+
+
+    public function build(): ProductInterface
+    {
+        return $this->product;
+    }
+}
diff --git a/src/Application/Decorator/OnionDecorator.php b/src/Application/Decorator/OnionDecorator.php
new file mode 100644
index 000000000..3bb857a9f
--- /dev/null
+++ b/src/Application/Decorator/OnionDecorator.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace Dmitry\Hw16\Application\Decorator;
+
+use Dmitry\Hw16\Domain\Entity\ProductInterface;
+
+class OnionDecorator implements ProductInterface
+{
+    private $product;
+
+    public function __construct($product)
+    {
+        $this->product = $product;
+    }
+
+    public function makeCooked(): void
+    {
+        $this->product->makeCooked();
+    }
+
+    public function getName(): string
+    {
+        return $this->product->getName() . ' с луком';
+    }
+}
diff --git a/src/Application/Decorator/PepperDecorator.php b/src/Application/Decorator/PepperDecorator.php
new file mode 100644
index 000000000..b0d8dfb33
--- /dev/null
+++ b/src/Application/Decorator/PepperDecorator.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace Dmitry\Hw16\Application\Decorator;
+
+use Dmitry\Hw16\Domain\Entity\ProductInterface;
+
+class PepperDecorator implements ProductInterface
+{
+    private $product;
+
+    public function __construct($product)
+    {
+        $this->product = $product;
+    }
+
+    public function makeCooked(): void
+    {
+        $this->product->makeCooked();
+    }
+
+    public function getName(): string
+    {
+        return $this->product->getName() . ' с перцем';
+    }
+}
diff --git a/src/Application/Decorator/SaladDecorator.php b/src/Application/Decorator/SaladDecorator.php
new file mode 100644
index 000000000..71ded8d10
--- /dev/null
+++ b/src/Application/Decorator/SaladDecorator.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace Dmitry\Hw16\Application\Decorator;
+
+use Dmitry\Hw16\Domain\Entity\ProductInterface;
+
+class SaladDecorator implements ProductInterface
+{
+    private $product;
+
+    public function __construct($product)
+    {
+        $this->product = $product;
+    }
+
+    public function makeCooked(): void
+    {
+        $this->product->makeCooked();
+    }
+
+    public function getName(): string
+    {
+        return $this->product->getName() . ' с салатом';
+    }
+}
diff --git a/src/Application/Factory/ProductFactory.php b/src/Application/Factory/ProductFactory.php
new file mode 100644
index 000000000..04b54ff42
--- /dev/null
+++ b/src/Application/Factory/ProductFactory.php
@@ -0,0 +1,31 @@
+<?php
+
+namespace Dmitry\Hw16\Application\Factory;
+
+use Dmitry\Hw16\Domain\Entity\Burger;
+use Dmitry\Hw16\Domain\Entity\Product;
+use Dmitry\Hw16\Domain\Entity\Sandwich;
+use Dmitry\Hw16\Domain\Entity\Hotdog;
+
+class ProductFactory
+{
+    private function __construct()
+    {
+        //Method disabled
+    }
+
+    public static function makeFood(string $type): Product
+    {
+        switch ($type) {
+            case 'burger':
+                return new Burger();
+            case 'sandwich':
+                return new Sandwich();
+            case 'hotdog':
+                return new Hotdog();
+            default:
+                throw new \Exception('Неизвестный продукт - ' . $type);
+                break;
+        }
+    }
+}
diff --git a/src/Application/Publisher/Publisher.php b/src/Application/Publisher/Publisher.php
new file mode 100644
index 000000000..a6f1bca1e
--- /dev/null
+++ b/src/Application/Publisher/Publisher.php
@@ -0,0 +1,26 @@
+<?php
+
+namespace Dmitry\Hw16\Application\Publisher;
+
+class Publisher implements PublisherInterface
+{
+    private $subscribers = [];
+
+    public function subscribe(SubscriberInterface $subscriber): void
+    {
+        $this->subscribers[spl_object_id($subscriber)] = $subscriber;
+    }
+
+    public function unsubscribe(SubscriberInterface $subscriber): void
+    {
+        unset($this->subscribers[spl_object_id($subscriber)]);
+    }
+
+    public function notify($product, $status)
+    {
+        var_dump($product->getName() . ' - ' . $status);
+        foreach ($this->subscribers as $subscriber) {
+            $subscriber->notify($product, $status);
+        }
+    }
+}
diff --git a/src/Application/Publisher/PublisherInterface.php b/src/Application/Publisher/PublisherInterface.php
new file mode 100644
index 000000000..954cb752f
--- /dev/null
+++ b/src/Application/Publisher/PublisherInterface.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace Dmitry\Hw16\Application\Publisher;
+
+use Dmitry\Hw16\Domain\Entity\Product;
+use MongoDB\Driver\Monitoring\Subscriber;
+
+interface PublisherInterface
+{
+    public function subscribe(SubscriberInterface $subscriber): void;
+
+    public function unsubscribe(SubscriberInterface $subscriber): void;
+
+    public function notify(Product $product, string $status);
+}
diff --git a/src/Application/Publisher/SubscriberInterface.php b/src/Application/Publisher/SubscriberInterface.php
new file mode 100644
index 000000000..9f5c5dc96
--- /dev/null
+++ b/src/Application/Publisher/SubscriberInterface.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace Dmitry\Hw16\Application\Publisher;
+
+use Dmitry\Hw16\Domain\Entity\Product;
+
+interface SubscriberInterface
+{
+    public function notify(Product $product, string $status);
+}
diff --git a/src/Application/Services/CookingInterface.php b/src/Application/Services/CookingInterface.php
new file mode 100644
index 000000000..79fc86efc
--- /dev/null
+++ b/src/Application/Services/CookingInterface.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace Dmitry\Hw16\Application\Services;
+
+use Dmitry\Hw16\Application\Publisher\PublisherInterface;
+use Dmitry\Hw16\Domain\Entity\ProductInterface;
+
+interface CookingInterface
+{
+    public function __construct(PublisherInterface $publisher);
+
+    public function cook(ProductInterface $product): ProductInterface;
+}
diff --git a/src/Application/Services/CookingService.php b/src/Application/Services/CookingService.php
new file mode 100644
index 000000000..0bc1188ed
--- /dev/null
+++ b/src/Application/Services/CookingService.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace Dmitry\Hw16\Application\Services;
+
+use Dmitry\Hw16\Application\Publisher\PublisherInterface;
+use Dmitry\Hw16\Domain\Entity\ProductInterface;
+
+class CookingService implements CookingInterface
+{
+    private PublisherInterface $publisher;
+
+    public function __construct(PublisherInterface $publisher)
+    {
+        $this->publisher = $publisher;
+    }
+
+    public function cook(ProductInterface $product): ProductInterface
+    {
+        $this->publisher->notify($product, 'Отправлен готовиться');
+        $product->makeCooked();
+        $this->publisher->notify($product, 'Приготовлен');
+        return $product;
+    }
+}
diff --git a/src/Application/UseCase/CookingUseCase.php b/src/Application/UseCase/CookingUseCase.php
new file mode 100644
index 000000000..448229543
--- /dev/null
+++ b/src/Application/UseCase/CookingUseCase.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace Dmitry\Hw16\Application\UseCase;
+
+use Dmitry\Hw16\Application\Services\CookingInterface;
+use Dmitry\Hw16\Domain\Entity\ProductInterface;
+
+class CookingUseCase
+{
+    public function __invoke(
+        CookingInterface $cookingService,
+        ProductInterface ...$product
+    ) {
+        foreach ($product as $item) {
+            $cookingService->cook($item);
+        }
+    }
+}
diff --git a/src/Domain/Entity/Burger.php b/src/Domain/Entity/Burger.php
new file mode 100644
index 000000000..9ad29a61b
--- /dev/null
+++ b/src/Domain/Entity/Burger.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace Dmitry\Hw16\Domain\Entity;
+
+use Dmitry\Hw16\Domain\Entity\AbstractProduct;
+
+class Burger extends Product
+{
+    public function __construct()
+    {
+        $this->name = 'Бургер';
+    }
+}
diff --git a/src/Domain/Entity/Hotdog.php b/src/Domain/Entity/Hotdog.php
new file mode 100644
index 000000000..a2acc6c9e
--- /dev/null
+++ b/src/Domain/Entity/Hotdog.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace Dmitry\Hw16\Domain\Entity;
+
+use Dmitry\Hw16\Domain\Entity\AbstractProduct;
+
+class Hotdog extends Product
+{
+    public function __construct()
+    {
+        $this->name = 'Хотдог';
+    }
+}
diff --git a/src/Domain/Entity/Pizza.php b/src/Domain/Entity/Pizza.php
new file mode 100644
index 000000000..51a927fa0
--- /dev/null
+++ b/src/Domain/Entity/Pizza.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace Dmitry\Hw16\Domain\Entity;
+
+class Pizza implements ProductInterface
+{
+    private string $name;
+    private bool $is_cooked = false;
+
+    public function __construct()
+    {
+        $this->name = 'Пицца';
+    }
+
+    public function getName(): string
+    {
+        return $this->name;
+    }
+
+    public function makeCooked(): void
+    {
+        $this->is_cooked = true;
+    }
+}
diff --git a/src/Domain/Entity/Product.php b/src/Domain/Entity/Product.php
new file mode 100644
index 000000000..36c7f033b
--- /dev/null
+++ b/src/Domain/Entity/Product.php
@@ -0,0 +1,21 @@
+<?php
+
+namespace Dmitry\Hw16\Domain\Entity;
+
+abstract class Product implements ProductInterface
+{
+    protected $name;
+    private bool $is_cooked = false;
+
+    abstract public function __construct();
+
+    public function getName(): string
+    {
+        return $this->name;
+    }
+
+    public function makeCooked(): void
+    {
+        $this->is_cooked = true;
+    }
+}
diff --git a/src/Domain/Entity/ProductInterface.php b/src/Domain/Entity/ProductInterface.php
new file mode 100644
index 000000000..71d1aff19
--- /dev/null
+++ b/src/Domain/Entity/ProductInterface.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace Dmitry\Hw16\Domain\Entity;
+
+interface ProductInterface
+{
+    public function getName(): string;
+
+    public function makeCooked(): void;
+}
diff --git a/src/Domain/Entity/Sandwich.php b/src/Domain/Entity/Sandwich.php
new file mode 100644
index 000000000..248bbd8d1
--- /dev/null
+++ b/src/Domain/Entity/Sandwich.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace Dmitry\Hw16\Domain\Entity;
+
+use Dmitry\Hw16\Domain\Entity\AbstractProduct;
+
+class Sandwich extends Product
+{
+    public function __construct()
+    {
+        $this->name = 'Сэндвич';
+    }
+}