diff --git a/.gitignore b/.gitignore
new file mode 100644
index 00000000..0a2ab674
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+.idea
+vendor
+.env
+dbdata
diff --git a/README.md b/README.md
index 6490de86..aaf128bb 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,3 @@
-# PHP2021
\ No newline at end of file
+# PHP2021
+
+https://otus.ru/lessons/razrabotchik-php/?utm_source=github&utm_medium=free&utm_campaign=otus
diff --git a/code/app.php b/code/app.php
new file mode 100644
index 00000000..289e1685
--- /dev/null
+++ b/code/app.php
@@ -0,0 +1,11 @@
+<?php
+
+require_once('vendor/autoload.php');
+
+try {
+    $app = new App\Application();
+    $app->run();
+}
+catch(Exception $e) {
+    App\Response::generateBadRequestResponse($e->getMessage());
+}
\ No newline at end of file
diff --git a/code/app/Adapters/KitchenAdapter.php b/code/app/Adapters/KitchenAdapter.php
new file mode 100644
index 00000000..b4a32b2a
--- /dev/null
+++ b/code/app/Adapters/KitchenAdapter.php
@@ -0,0 +1,46 @@
+<?php
+
+namespace App\Adapters;
+
+use App\Meal\MealInterface;
+use Exception;
+
+class KitchenAdapter
+{
+    private KitchenService $kitchenService;
+
+    /**
+     * @param KitchenService $kitchenService
+     */
+    public function __construct(KitchenService $kitchenService)
+    {
+        $this->kitchenService = $kitchenService;
+    }
+
+    /**
+     * @param MealInterface $meal
+     * @return void
+     * @throws Exception
+     */
+    public function cookMeal(MealInterface $meal): void
+    {
+        $currentIngredients = $meal->getIngredients();
+        $meal->resetIngredients();
+        $meal->addIngredients($this->kitchenService->fry($currentIngredients));
+
+        if ($this->kitchenService->checkMealQuality($meal)) {
+            $meal->setStatus('Cooked and checked');
+        } else {
+            throw new Exception('Cooking failed');
+        }
+    }
+
+    /**
+     * @param MealInterface $meal
+     * @return void
+     */
+    public function utilizeMeal(MealInterface $meal): void
+    {
+        $this->kitchenService->utilize($meal);
+    }
+}
\ No newline at end of file
diff --git a/code/app/Adapters/KitchenService.php b/code/app/Adapters/KitchenService.php
new file mode 100644
index 00000000..24c0a3a4
--- /dev/null
+++ b/code/app/Adapters/KitchenService.php
@@ -0,0 +1,55 @@
+<?php
+
+namespace App\Adapters;
+
+use App\Meal\MealInterface;
+
+class KitchenService
+{
+    private static array $needFried = [
+        'bread',
+        'cutlet',
+        'sausage',
+        'sausage slices',
+        'onion',
+        'beef',
+    ];
+
+    /**
+     * @param array $ingredients
+     * @return array
+     */
+    public function fry(array $ingredients): array
+    {
+        $cookedIngredients = [];
+        foreach ($ingredients as $ingredient => $value) {
+            if (in_array($ingredient, self::$needFried)) {
+                $cookedIngredients["fried_{$ingredient}"] = $value;
+            } else {
+                $cookedIngredients[$ingredient] = $value;
+            }
+        }
+
+        return $cookedIngredients;
+    }
+
+    /**
+     * @param MealInterface $meal
+     * @return bool
+     */
+    public function checkMealQuality(MealInterface $meal): bool
+    {
+        foreach ($meal->getIngredients() as $ingredient => $value)
+            if (in_array($ingredient, self::$needFried)) return false;
+        return true;
+    }
+
+    /**
+     * @param MealInterface $meal
+     * @return void
+     */
+    public function utilize(MealInterface $meal): void
+    {
+        $meal->setStatus('Utilized');
+    }
+}
\ No newline at end of file
diff --git a/code/app/Application.php b/code/app/Application.php
new file mode 100644
index 00000000..252338f6
--- /dev/null
+++ b/code/app/Application.php
@@ -0,0 +1,54 @@
+<?php
+
+namespace App;
+
+use App\Observer\Customer;
+use App\Strategy\BurgerStrategy;
+use App\Strategy\HotDogStrategy;
+use App\Strategy\OrderContext;
+use App\Strategy\SandwichStrategy;
+use Exception;
+
+class Application
+{
+    private $request;
+
+    /**
+     * @throws Exception
+     */
+    public function __construct()
+    {
+        try {
+            $this->request = RequestValidator::validate($_POST);
+        } catch (Exception $e) {
+            throw new Exception($e->getMessage());
+        }
+    }
+
+    /**
+     * @return void
+     * @throws Exception
+     */
+    public function run(): void
+    {
+        $customer = new Customer();
+        $order = new OrderContext($customer);
+
+        switch ($_POST['meal']) {
+            case 'Burger':
+                $order->setCookingStrategy(new BurgerStrategy());
+                break;
+            case 'HotDog':
+                $order->setCookingStrategy(new HotDogStrategy());
+                break;
+            case 'Sandwich':
+                $order->setCookingStrategy(new SandwichStrategy());
+                break;
+            default:
+                throw new Exception('No meal choosed');
+        }
+
+        $meal = $order->getOrderedMeal($_POST['client_ingredients'] ?? []);
+        print_r($meal->getIngredients());
+    }
+}
\ No newline at end of file
diff --git a/code/app/Decorators/BurgerDecorator.php b/code/app/Decorators/BurgerDecorator.php
new file mode 100644
index 00000000..f513f3e1
--- /dev/null
+++ b/code/app/Decorators/BurgerDecorator.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace App\Decorators;
+
+
+class BurgerDecorator extends MealDecorator
+{
+    private MealDecorator $mealDecorator;
+    private static array $baseRecipe = [
+        'pickles' => 3,
+        'onion' => 2,
+        'lettuce' => 1,
+        'cotlete' => 1,
+    ];
+
+    /**
+     * @param MealDecorator $mealBaseClass
+     * @return void
+     */
+    public function __constructor(MealDecorator $mealBaseClass): void
+    {
+        $this->mealDecorator = $mealBaseClass;
+    }
+
+    /**
+     * @return void
+     */
+    public function addBaseIngredients(): void
+    {
+        $this->mealDecorator->ingredients = array_merge(
+            $this->mealDecorator->ingredients,
+            $this->mealDecorator->getAdapter()->addIngredients(self::$baseRecipe)
+        );
+        $this->mealDecorator->setStatus('Added base burger recipe ingredients');
+    }
+}
\ No newline at end of file
diff --git a/code/app/Decorators/CustomerIngredientsDecorator.php b/code/app/Decorators/CustomerIngredientsDecorator.php
new file mode 100644
index 00000000..f13d0efa
--- /dev/null
+++ b/code/app/Decorators/CustomerIngredientsDecorator.php
@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Decorators;
+
+use App\Meal\MealBaseClass;
+
+class CustomerIngredientsDecorator extends MealDecorator
+{
+    private MealDecorator $mealDecorator;
+
+    /**
+     * @param MealBaseClass $mealBaseClass
+     * @return void
+     */
+    public function __constructor(MealBaseClass $mealBaseClass): void
+    {
+        $this->mealDecorator = $mealBaseClass;
+    }
+
+    /**
+     * @param array $customerIngredients
+     * @return void
+     */
+    public function addCustomerIngredients(array $customerIngredients): void
+    {
+        $this->mealDecorator->ingredients = array_merge(
+            $this->mealDecorator->ingredients,
+            $this->mealDecorator->getAdapter()->addIngredients($customerIngredients)
+        );
+        $this->mealDecorator->setStatus('Added client Ingredients');
+    }
+
+
+}
\ No newline at end of file
diff --git a/code/app/Decorators/HotDogDecorator.php b/code/app/Decorators/HotDogDecorator.php
new file mode 100644
index 00000000..e40ccfd1
--- /dev/null
+++ b/code/app/Decorators/HotDogDecorator.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace App\Decorators;
+
+use App\Meal\MealBaseClass;
+
+class HotDogDecorator extends MealDecorator
+{
+    private MealDecorator $mealDecorator;
+    private static array $baseRecipe = [
+        'ketchup' => 1,
+        'mustard' => 1,
+        'sausage' => 1,
+    ];
+
+    /**
+     * @param MealBaseClass $mealBaseClass
+     * @return void
+     */
+    public function __constructor(MealBaseClass $mealBaseClass): void
+    {
+        $this->mealDecorator = $mealBaseClass;
+    }
+
+    /**
+     * @return void
+     */
+    public function addBaseIngredients(): void
+    {
+        $this->mealDecorator->ingredients = array_merge(
+            $this->mealDecorator->ingredients,
+            $this->mealDecorator->getAdapter()->addIngredients(self::$baseRecipe)
+        );
+        $this->mealDecorator->setStatus('Added base hot-dog recipe ingredients');
+    }
+}
\ No newline at end of file
diff --git a/code/app/Decorators/MealDecorator.php b/code/app/Decorators/MealDecorator.php
new file mode 100644
index 00000000..c6a0d520
--- /dev/null
+++ b/code/app/Decorators/MealDecorator.php
@@ -0,0 +1,76 @@
+<?php
+
+namespace App\Decorators;
+
+use App\Meal\IngredientAdapter;
+use App\Meal\MealBaseClass;
+use SplObjectStorage;
+
+class MealDecorator extends MealBaseClass
+{
+    private MealBaseClass $mealBaseClass;
+    private SplObjectStorage $splObjectStorage;
+    private IngredientAdapter $adapter;
+
+    /**
+     * @param MealBaseClass $mealBaseClass
+     * @return void
+     */
+    public function __constructor(MealBaseClass $mealBaseClass): void
+    {
+        parent::__constructor();
+        $this->mealBaseClass = $mealBaseClass;
+        $this->adapter = new IngredientAdapter();
+        $this->resetIngredients();
+    }
+
+    /**
+     * @return void
+     */
+    public function resetIngredients(): void
+    {
+        $this->ingredients = $this->mealBaseClass->getIngredients();
+    }
+
+    /**
+     * @param string $status
+     * @return void
+     */
+    public function setStatus(string $status): void
+    {
+        $this->mealBaseClass->setStatus($status);
+    }
+
+    /**
+     * @return string
+     */
+    public function getBaseType(): string
+    {
+        return get_class($this->mealBaseClass);
+    }
+
+    /**
+     * @return array
+     */
+    public function getIngredients(): array
+    {
+        return $this->ingredients;
+    }
+
+    /**
+     * @param array $ingredients
+     * @return void
+     */
+    public function addIngredients(array $ingredients = []): void
+    {
+        $this->ingredients = array_merge($this->ingredients, $ingredients);
+    }
+
+    /**
+     * @return IngredientAdapter
+     */
+    public function getAdapter(): IngredientAdapter
+    {
+        return $this->adapter;
+    }
+}
\ No newline at end of file
diff --git a/code/app/Decorators/SandwichDecorator.php b/code/app/Decorators/SandwichDecorator.php
new file mode 100644
index 00000000..5935de9f
--- /dev/null
+++ b/code/app/Decorators/SandwichDecorator.php
@@ -0,0 +1,35 @@
+<?php
+
+namespace App\Decorators;
+
+use App\Meal\MealBaseClass;
+
+class SandwichDecorator extends MealDecorator
+{
+    private MealDecorator $mealDecorator;
+    private static array $baseRecipe = [
+        'ham' => 1,
+        'cheese' => 2,
+    ];
+
+    /**
+     * @param MealBaseClass $mealBaseClass
+     * @return void
+     */
+    public function __constructor(MealBaseClass $mealBaseClass): void
+    {
+        $this->mealDecorator = $mealBaseClass;
+    }
+
+    /**
+     * @return void
+     */
+    public function addBaseIngredients(): void
+    {
+        $this->mealDecorator->ingredients = array_merge(
+            $this->mealDecorator->ingredients,
+            $this->mealDecorator->getAdapter()->addIngredients(self::$baseRecipe)
+        );
+        $this->mealDecorator->setStatus('Added base sandwich recipe ingredients');
+    }
+}
\ No newline at end of file
diff --git a/code/app/Factories/BurgerFactory.php b/code/app/Factories/BurgerFactory.php
new file mode 100644
index 00000000..eafb2af4
--- /dev/null
+++ b/code/app/Factories/BurgerFactory.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace App\Factory;
+
+use App\Meal\MealInterface;
+
+class BurgerFactory extends MealFactory
+{
+    public function createMealBase(): MealInterface
+    {
+
+    }
+}
\ No newline at end of file
diff --git a/code/app/Factories/HotDogFactory.php b/code/app/Factories/HotDogFactory.php
new file mode 100644
index 00000000..fbd619db
--- /dev/null
+++ b/code/app/Factories/HotDogFactory.php
@@ -0,0 +1,14 @@
+<?php
+
+namespace App\Factory;
+
+use App\Meal\HotDog;
+use App\Meal\MealInterface;
+
+class HotDogFactory extends MealFactory
+{
+    public function createMealBase(): MealInterface
+    {
+        return new HotDog();
+    }
+}
\ No newline at end of file
diff --git a/code/app/Factories/MealFactory.php b/code/app/Factories/MealFactory.php
new file mode 100644
index 00000000..b073e45c
--- /dev/null
+++ b/code/app/Factories/MealFactory.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace App\Factory;
+
+use App\Meal\MealInterface;
+
+abstract class MealFactory
+{
+    abstract public function createMealBase(): MealInterface;
+}
\ No newline at end of file
diff --git a/code/app/Factories/SandwichFactory.php b/code/app/Factories/SandwichFactory.php
new file mode 100644
index 00000000..b78cae6d
--- /dev/null
+++ b/code/app/Factories/SandwichFactory.php
@@ -0,0 +1,14 @@
+<?php
+
+namespace App\Factory;
+
+use App\Meal\MealInterface;
+use App\Meal\Sandwich;
+
+class SandwichFactory extends MealFactory
+{
+    public function createMealBase(): MealInterface
+    {
+        return new Sandwich();
+    }
+}
\ No newline at end of file
diff --git a/code/app/Meals/Burger.php b/code/app/Meals/Burger.php
new file mode 100644
index 00000000..f1ed9901
--- /dev/null
+++ b/code/app/Meals/Burger.php
@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Meal;
+
+class Burger extends MealBaseClass
+{
+    public function __constructor(): void
+    {
+        parent::__constructor();
+        $this->setIngredients([
+            new Ingredient('bread'),
+            new Ingredient('cutlet',2),
+            new Ingredient('cheese',3),
+            new Ingredient('lettuce leaf'),
+            new Ingredient('tomato slice'),
+            new Ingredient('sauce'),
+            new Ingredient('cucumber slice'),
+        ]);
+    }
+
+}
\ No newline at end of file
diff --git a/code/app/Meals/HotDog.php b/code/app/Meals/HotDog.php
new file mode 100644
index 00000000..d85385be
--- /dev/null
+++ b/code/app/Meals/HotDog.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace App\Meal;
+
+class HotDog extends MealBaseClass
+{
+    public function __constructor(): void
+    {
+        parent::__constructor();
+        $this->setIngredients([
+            new Ingredient('bread'),
+            new Ingredient('sausage'),
+            new Ingredient('sauce'),
+            new Ingredient('carrot')
+        ]);
+    }
+}
\ No newline at end of file
diff --git a/code/app/Meals/Ingredient.php b/code/app/Meals/Ingredient.php
new file mode 100644
index 00000000..e3e97734
--- /dev/null
+++ b/code/app/Meals/Ingredient.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace App\Meal;
+
+class Ingredient
+{
+    private string $name;
+    private int $amount;
+
+    /**
+     * @param string $name
+     * @param int $amount
+     */
+    public function __construct(string $name, int $amount = 1)
+    {
+        $this->name = $name;
+        $this->amount = $amount;
+    }
+
+    /**
+     * @return string
+     */
+    public function getName(): string
+    {
+        return $this->name;
+    }
+
+    /**
+     * @return int
+     */
+    public function getAmount(): int
+    {
+        return $this->amount;
+    }
+
+
+}
\ No newline at end of file
diff --git a/code/app/Meals/IngredientAdapter.php b/code/app/Meals/IngredientAdapter.php
new file mode 100644
index 00000000..48ba0c2d
--- /dev/null
+++ b/code/app/Meals/IngredientAdapter.php
@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Meal;
+
+class IngredientAdapter
+{
+    /**
+     * @param array $ingredients
+     * @return array
+     */
+    public function addIngredients(array $ingredients): array
+    {
+        $arrObjectIngredients = [];
+        foreach ($ingredients as $ingredient => $amount)
+        {
+            $arrObjectIngredients[] = new Ingredient($ingredient, (int) $amount);
+        }
+
+        return $arrObjectIngredients;
+    }
+}
\ No newline at end of file
diff --git a/code/app/Meals/MealBaseClass.php b/code/app/Meals/MealBaseClass.php
new file mode 100644
index 00000000..eb3337c4
--- /dev/null
+++ b/code/app/Meals/MealBaseClass.php
@@ -0,0 +1,95 @@
+<?php
+
+namespace App\Meal;
+
+use SplObjectStorage;
+use SplObserver;
+use SplSubject;
+
+class MealBaseClass implements MealInterface, SplSubject
+{
+    public array $ingredients;
+    private string $status;
+    private SplObjectStorage $objectStorage;
+
+    /**
+     * @return void
+     */
+    public function __constructor(): void
+    {
+        $this->objectStorage = new SplObjectStorage();
+    }
+
+    /**
+     * @return array
+     */
+    public function getIngredients(): array
+    {
+        return $this->ingredients;
+    }
+
+    /**
+     * @param SplObserver $observer
+     * @return void
+     */
+    public function attach(SplObserver $observer): void
+    {
+        $this->objectStorage->attach($observer);
+    }
+
+    /**
+     * @param SplObserver $observer
+     * @return void
+     */
+    public function detach(SplObserver $observer): void
+    {
+        $this->objectStorage->detach($observer);
+    }
+
+    /**
+     * @return void
+     */
+    public function notify(): void
+    {
+        foreach ($this->objectStorage as $item) {
+            $item->update($this);
+        }
+    }
+
+    /**
+     * @param string $status
+     * @return void
+     */
+    public function setStatus(string $status): void
+    {
+        $this->status = $status;
+        $this->notify();
+    }
+
+    /**
+     * @return string
+     */
+    public function getStatus(): string
+    {
+        return $this->status;
+    }
+
+    /**
+     * @param array $ingredients
+     * @return void
+     */
+    public function setIngredients(array $ingredients = []): void
+    {
+        $this->ingredients = $ingredients;
+    }
+
+    /**
+     * @param array $ingredients
+     * @return void
+     */
+    public function addIngredients(array $ingredients = []): void
+    {
+        $this->ingredients = array_merge($this->ingredients, $ingredients);
+    }
+
+}
\ No newline at end of file
diff --git a/code/app/Meals/MealInterface.php b/code/app/Meals/MealInterface.php
new file mode 100644
index 00000000..299e8671
--- /dev/null
+++ b/code/app/Meals/MealInterface.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace App\Meal;
+
+interface MealInterface
+{
+    /**
+     * @return array
+     */
+    public function getIngredients(): array;
+}
\ No newline at end of file
diff --git a/code/app/Meals/Sandwich.php b/code/app/Meals/Sandwich.php
new file mode 100644
index 00000000..8a517670
--- /dev/null
+++ b/code/app/Meals/Sandwich.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace App\Meal;
+
+class Sandwich extends MealBaseClass
+{
+    public function __constructor(): void
+    {
+        parent::__constructor();
+        $this->setIngredients([
+            new Ingredient('bread'),
+            new Ingredient('sauce'),
+            new Ingredient('sausage slices',20),
+            new Ingredient('cheese'),
+        ]);
+    }
+}
\ No newline at end of file
diff --git a/code/app/Observers/Customer.php b/code/app/Observers/Customer.php
new file mode 100644
index 00000000..a7f5d250
--- /dev/null
+++ b/code/app/Observers/Customer.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace App\Observer;
+
+use SplSubject;
+
+class Customer implements \SplObserver
+{
+
+    /**
+     * @param SplSubject $subject
+     * @return void
+     */
+    public function update(SplSubject $subject): void
+    {
+        echo $subject->getStatus();
+    }
+}
\ No newline at end of file
diff --git a/code/app/RequestValidator.php b/code/app/RequestValidator.php
new file mode 100644
index 00000000..734d5710
--- /dev/null
+++ b/code/app/RequestValidator.php
@@ -0,0 +1,43 @@
+<?php
+
+namespace App;
+
+use Exception;
+
+class RequestValidator
+{
+    /**
+     * @param array $request
+     * @return array
+     * @throws Exception
+     */
+    public static function validate(array $request): array
+    {
+        if (!self::checkRequestType('POST')) {
+            throw new Exception('Неверный метод запроса');
+        }
+        if (self::checkRequestIsEmpty($request)) {
+            throw new Exception('Empty request');
+        }
+
+        return $request;
+    }
+
+    /**
+     * @param string $type
+     * @return bool
+     */
+    public static function checkRequestType(string $type): bool
+    {
+        return ($_SERVER['REQUEST_METHOD'] === $type);
+    }
+
+    /**
+     * @param array $request
+     * @return bool
+     */
+    public static function checkRequestIsEmpty(array $request): bool
+    {
+        return empty($request);
+    }
+}
\ No newline at end of file
diff --git a/code/app/Response.php b/code/app/Response.php
new file mode 100644
index 00000000..61766d9f
--- /dev/null
+++ b/code/app/Response.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace App;
+
+class Response
+{
+    public static function generateOkResponse($responseText)
+    {
+        header('HTTP/1.0 200 Ok');
+        echo $responseText.PHP_EOL;
+    }
+
+    public static function generateBadRequestResponse($responseText)
+    {
+        header('HTTP/1.0 400 Bad Request');
+        echo $responseText.PHP_EOL;
+    }
+}
\ No newline at end of file
diff --git a/code/app/Strategies/BurgerStrategy.php b/code/app/Strategies/BurgerStrategy.php
new file mode 100644
index 00000000..95adecdc
--- /dev/null
+++ b/code/app/Strategies/BurgerStrategy.php
@@ -0,0 +1,52 @@
+<?php
+
+namespace App\Strategy;
+
+use App\Decorators\BurgerDecorator;
+use App\Decorators\CustomerIngredientsDecorator;
+use App\Decorators\MealDecorator;
+use App\Factory\BurgerFactory;
+use App\Meal\MealInterface;
+use App\Observer\Customer;
+
+class BurgerStrategy implements CookingStrategyInterface
+{
+
+    /**
+     * @param array $ingredients
+     * @param Customer $customer
+     * @return MealInterface
+     */
+    public function prepareIngredients(array $ingredients, Customer $customer): MealInterface
+    {
+        $baseBurger = $this->generateBaseBurger();
+        $baseBurger->attach($customer);
+        $baseBurger->setStatus('Started');
+        return $this->addIngredients($baseBurger, $ingredients);
+    }
+
+    /**
+     * @return MealInterface
+     */
+    private function generateBaseBurger(): MealInterface
+    {
+        $factory = new BurgerFactory();
+        return $factory->createMealBase();
+    }
+
+    /**
+     * @param MealInterface $meal
+     * @param array $customerIngredients
+     * @return MealInterface
+     */
+    private function addIngredients(MealInterface $meal, array $customerIngredients): MealInterface
+    {
+        $decorator = new MealDecorator($meal);
+        $burgerDecorator = new BurgerDecorator($decorator);
+        $burgerDecorator->addBaseIngredients();
+        $customerDecorator = new CustomerIngredientsDecorator($decorator);
+        $customerDecorator->addCustomerIngredients($customerIngredients);
+
+        return $decorator;
+    }
+}
\ No newline at end of file
diff --git a/code/app/Strategies/CookingStrategyInterface.php b/code/app/Strategies/CookingStrategyInterface.php
new file mode 100644
index 00000000..4f8e3c32
--- /dev/null
+++ b/code/app/Strategies/CookingStrategyInterface.php
@@ -0,0 +1,16 @@
+<?php
+
+namespace App\Strategy;
+
+use App\Meal\MealInterface;
+use App\Observer\Customer;
+
+interface CookingStrategyInterface
+{
+    /**
+     * @param array $ingredients
+     * @param Customer $customer
+     * @return MealInterface
+     */
+    public function prepareIngredients(array $ingredients, Customer $customer): MealInterface;
+}
\ No newline at end of file
diff --git a/code/app/Strategies/HotDogStrategy.php b/code/app/Strategies/HotDogStrategy.php
new file mode 100644
index 00000000..53b85018
--- /dev/null
+++ b/code/app/Strategies/HotDogStrategy.php
@@ -0,0 +1,50 @@
+<?php
+
+namespace App\Strategy;
+
+use App\Decorators\CustomerIngredientsDecorator;
+use App\Decorators\HotDogDecorator;
+use App\Decorators\MealDecorator;
+use App\Factory\HotDogFactory;
+use App\Meal\MealInterface;
+use App\Observer\Customer;
+
+class HotDogStrategy implements CookingStrategyInterface
+{
+    /**
+     * @param array $ingredients
+     * @param Customer $customer
+     * @return MealInterface
+     */
+    public function prepareIngredients(array $ingredients, Customer $customer): MealInterface
+    {
+        $baseHotDog = $this->generateBaseHotDog();
+        $baseHotDog->attach($customer);
+        $baseHotDog->setStatus('Started');
+        return $this->addIngredients($baseHotDog, $ingredients);
+    }
+
+    /**
+     * @return MealInterface
+     */
+    private function generateBaseHotDog(): MealInterface
+    {
+        return (new HotDogFactory())->createMealBase();
+    }
+
+    /**
+     * @param MealInterface $meal
+     * @param array $customerIngredients
+     * @return MealInterface
+     */
+    private function addIngredients(MealInterface $meal, array $customerIngredients): MealInterface
+    {
+        $decorator = new MealDecorator($meal);
+        $hotDogDecorator = new HotDogDecorator($decorator);
+        $hotDogDecorator->addBaseIngredients();
+        $customerDecorator = new CustomerIngredientsDecorator($decorator);
+        $customerDecorator->addCustomerIngredients($customerIngredients);
+
+        return $decorator;
+    }
+}
\ No newline at end of file
diff --git a/code/app/Strategies/OrderContext.php b/code/app/Strategies/OrderContext.php
new file mode 100644
index 00000000..d628d509
--- /dev/null
+++ b/code/app/Strategies/OrderContext.php
@@ -0,0 +1,53 @@
+<?php
+
+namespace App\Strategy;
+
+use App\Adapters\KitchenAdapter;
+use App\Adapters\KitchenService;
+use App\Meal\MealInterface;
+use App\Observer\Customer;
+use Exception;
+
+class OrderContext
+{
+    private CookingStrategyInterface $strategy;
+    private Customer $customer;
+
+    /**
+     * @param Customer $customer
+     */
+    public function __construct(Customer $customer)
+    {
+        $this->customer = $customer;
+    }
+
+    /**
+     * @param CookingStrategyInterface $strategy
+     * @return void
+     */
+    public function setCookingStrategy(CookingStrategyInterface $strategy): void
+    {
+        $this->strategy = $strategy;
+    }
+
+    /**
+     * @param array $ingredients
+     * @return MealInterface
+     */
+    public function getOrderedMeal(array $ingredients = []): MealInterface
+    {
+        $orderedMeal = $this->strategy->prepareIngredients($ingredients, $this->customer);
+        $orderedMeal->setStatud('Preparations');
+
+        try {
+            $kitchen = new KitchenAdapter(new KitchenService());
+            $kitchen->cookMeal($orderedMeal);
+        } catch (Exception $e) {
+            if ($kitchen instanceof KitchenAdapter) {
+                $kitchen->utilizeMeal($orderedMeal);
+            }
+        }
+
+        return $orderedMeal;
+    }
+}
\ No newline at end of file
diff --git a/code/app/Strategies/SandwichStrategy.php b/code/app/Strategies/SandwichStrategy.php
new file mode 100644
index 00000000..dd8959cc
--- /dev/null
+++ b/code/app/Strategies/SandwichStrategy.php
@@ -0,0 +1,47 @@
+<?php
+
+namespace App\Strategy;
+
+use App\Decorators\CustomerIngredientsDecorator;
+use App\Decorators\MealDecorator;
+use App\Decorators\SandwichDecorator;
+use App\Factory\SandwichFactory;
+use App\Meal\MealInterface;
+use App\Observer\Customer;
+
+class SandwichStrategy implements CookingStrategyInterface
+{
+
+    public function prepareIngredients(array $ingredients, Customer $customer): MealInterface
+    {
+        $baseSandwich = $this->generateBaseSandwich();
+        $baseSandwich->attach($customer);
+        $baseSandwich->setStatus('Started');
+        return $this->addIngredients($baseSandwich, $ingredients);
+
+    }
+
+    /**
+     * @return MealInterface
+     */
+    private function generateBaseSandwich(): MealInterface
+    {
+        return (new SandwichFactory())->createMealBase();
+    }
+
+    /**
+     * @param MealInterface $meal
+     * @param array $customerIngredients
+     * @return MealInterface
+     */
+    private function addIngredients(MealInterface $meal, array $customerIngredients): MealInterface
+    {
+        $decorator = new MealDecorator($meal);
+        $sandwichDecorator = new SandwichDecorator($decorator);
+        $sandwichDecorator->addBaseIngredients();
+        $customerDecorator = new CustomerIngredientsDecorator($decorator);
+        $customerDecorator->addCustomerIngredients($customerIngredients);
+
+        return $decorator;
+    }
+}
\ No newline at end of file
diff --git a/code/composer.json b/code/composer.json
new file mode 100644
index 00000000..76f50cd2
--- /dev/null
+++ b/code/composer.json
@@ -0,0 +1,12 @@
+{
+  "require": {
+    "php": ">=7.4",
+    "ext-json": "*",
+    "ext-sockets": "*"
+  },
+  "autoload": {
+    "psr-4": {
+      "App\\": "app"
+    }
+  }
+}
\ No newline at end of file