TASK-39: Add ability to top-up balance of given client

This commit also refactors a bit logic behind deducing from balance to
have better separation of concerns.

features/crm-user-sync.feature

@@ -20,6 +20,17 @@ Feature:
     And client with id "018edd37-c145-7143-ba91-c191084e4fba" should exist
     And client with id "018edd37-c145-7143-ba91-c191084e4fba" should have balance of 100000
 
+  Scenario: CRM is able to top up existing client
+    Given the request has the following body:
+      """
+      {
+        "amount": 5000
+      }
+      """
+    When I send a POST request to "/clients/018edd2e-894a-78d7-b10c-16e05ca933a3/_top-up"
+    Then the response status should be 200
+    And client with id "018edd2e-894a-78d7-b10c-16e05ca933a3" should have balance of 10000
+
   Scenario: CRM should not be able to override existing user
     Given the request has the following body:
       """

src/Contract/TopUpRequestDto.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace App\Contract;
+
+readonly class TopUpRequestDto
+{
+    public function __construct(public int $amount) {}
+}

src/Controller/ClientController.php

@@ -3,6 +3,7 @@
 namespace App\Controller;
 
 use App\Contract\ClientDto;
+use App\Contract\TopUpRequestDto;
 use App\Entity\Client;
 use App\Exception\ClientAlreadyExistsException;
 use App\Service\ClientService;
@@ -10,6 +11,7 @@ use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpKernel\Attribute\AsController;
 use Symfony\Component\HttpKernel\Attribute\MapRequestPayload;
 use Symfony\Component\Routing\Attribute\Route;
+use Symfony\Component\Uid\Uuid;
 
 #[Route(path: '/clients', name: 'clients_')]
 #[AsController]
@@ -37,4 +39,14 @@ readonly class ClientController
 
         return new Response(status: Response::HTTP_CREATED);
     }
+
+    #[Route(path: '/{client}/_top-up', name: 'top_up', methods: ['POST'])]
+    public function topUp(
+        #[MapRequestPayload] TopUpRequestDto $topUpRequestDto,
+        Client $client,
+    ): Response {
+        $this->clientService->topUpBalance($client, $topUpRequestDto->amount);
+
+        return new Response();
+    }
 }

src/Entity/Client.php

@@ -61,4 +61,9 @@ class Client
     {
         $this->currentBalance -= $amount;
     }
+
+    public function topUpBalance(int $amount): void
+    {
+        $this->currentBalance += $amount;
+    }
 }

src/Service/ClientService.php

@@ -44,9 +44,17 @@ class ClientService
         return $this->clientRepository->save($client);
     }
 
-    public function save(Client $client): void
+    public function deduceFromBalance(Client $client, int $amount)
     {
+        $client->deduceFromBalance($amount);
+
         $this->clientRepository->save($client);
     }
 
+    public function topUpBalance(Client $client, int $amount)
+    {
+        $client->topUpBalance($amount);
+
+        $this->clientRepository->save($client);
+    }
 }

src/Service/OrderService.php

@@ -24,10 +24,6 @@ readonly class OrderService
 
         $totalPrice = $command->order->getTotalPrice($this->pricingStrategy);
 
-        $command->client->deduceFromBalance($totalPrice);
-
-        $this->clientService->save($command->client);
+        $this->clientService->deduceFromBalance($command->client, $totalPrice);
     }
-
-
 }

tests/App/Service/OrderServiceTest.php

@@ -69,31 +69,6 @@ class OrderServiceTest extends TestCase
         $sut->acceptOrder($order);
     }
 
-    public function testTotalPriceIsDeducedFromClientBalance()
-    {
-        $initialBalance = 10000_00;
-        $price = 6900_00;
-
-        $command = new AcceptOrderCommand(
-            $order = $this->createValidOrderDto(),
-            $client = $this->createClient($initialBalance),
-        );
-
-        $pricingStrategyMock = $this->createMock(PricingStrategy::class);
-
-        $pricingStrategyMock
-            ->expects($this->atLeastOnce())
-            ->method('calculateTotalPriceOfOrder')
-            ->with($order)
-            ->willReturn($price);
-
-        $sut = $this->createOrderService(pricingStrategyMock: $pricingStrategyMock);
-        $sut->acceptOrder($command);
-
-        $this->assertEquals($initialBalance, $client->getInitialBalance(), 'Initial balance got changed after placing order');
-        $this->assertEquals($initialBalance - $price, $client->getBalance(), 'Current balance not changed after placing order');
-    }
-
     public function testClientIsUpdatedAfterPlacingOrder()
     {
         $command = new AcceptOrderCommand(
@@ -102,7 +77,7 @@ class OrderServiceTest extends TestCase
         );
 
         $clientServiceMock = $this->createMock(ClientService::class);
-        $clientServiceMock->expects($this->once())->method('save')->with($client);
+        $clientServiceMock->expects($this->once())->method('deduceFromBalance');
 
         $sut = $this->createOrderService(clientServiceMock: $clientServiceMock);
         $sut->acceptOrder($command);