refactor: implement order actions as use cases

Makefile

@@ -1,3 +1,5 @@
+.PHONY: test build run debug lint/fix
+
 test:
 	./gradlew test
 
@@ -8,4 +10,7 @@ run:
 	./gradlew bootRun
 
 debug:
-	./gradlew bootRun --debug-jvm
+	./gradlew bootRun --debug-jvm
+
+lint/fix:
+	./gradlew spotlessApply

src/main/java/br/com/fiap/grupo30/fastfood/adapters/in/rest/OrderResource.java

@@ -2,10 +2,11 @@
 
 import br.com.fiap.grupo30.fastfood.application.dto.AddOrderProductRequest;
 import br.com.fiap.grupo30.fastfood.application.dto.OrderDTO;
-import br.com.fiap.grupo30.fastfood.application.services.OrderService;
-import br.com.fiap.grupo30.fastfood.domain.commands.AddProductToOrderCommand;
-import br.com.fiap.grupo30.fastfood.domain.commands.RemoveProductFromOrderCommand;
-import br.com.fiap.grupo30.fastfood.domain.commands.SubmitOrderCommand;
+import br.com.fiap.grupo30.fastfood.domain.usecases.order.AddProductToOrderUseCase;
+import br.com.fiap.grupo30.fastfood.domain.usecases.order.GetOrderUseCase;
+import br.com.fiap.grupo30.fastfood.domain.usecases.order.RemoveProductFromOrderUseCase;
+import br.com.fiap.grupo30.fastfood.domain.usecases.order.StartNewOrderUseCase;
+import br.com.fiap.grupo30.fastfood.domain.usecases.order.SubmitOrderUseCase;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import java.net.URI;
@@ -19,19 +20,32 @@
 @Tag(name = "Orders Resource", description = "RESTful API for managing orders.")
 public class OrderResource {
 
-    private final OrderService orderService;
+    private final StartNewOrderUseCase startNewOrderUseCase;
+    private final AddProductToOrderUseCase addProductToOrderUseCase;
+    private final RemoveProductFromOrderUseCase removeProductFromOrderUseCase;
+    private final GetOrderUseCase getOrderUseCase;
+    private final SubmitOrderUseCase submitOrderUseCase;
 
     @Autowired
-    public OrderResource(OrderService orderService) {
-        this.orderService = orderService;
+    public OrderResource(
+            StartNewOrderUseCase startNewOrderUseCase,
+            AddProductToOrderUseCase addProductToOrderUseCase,
+            RemoveProductFromOrderUseCase removeProductFromOrderUseCase,
+            GetOrderUseCase getOrderUseCase,
+            SubmitOrderUseCase submitOrderUseCase) {
+        this.startNewOrderUseCase = startNewOrderUseCase;
+        this.addProductToOrderUseCase = addProductToOrderUseCase;
+        this.removeProductFromOrderUseCase = removeProductFromOrderUseCase;
+        this.getOrderUseCase = getOrderUseCase;
+        this.submitOrderUseCase = submitOrderUseCase;
     }
 
     @GetMapping(value = "/{orderId}")
     @Operation(
             summary = "Get an order by ID",
             description = "Retrieve a specific order based on its ID")
     public ResponseEntity<OrderDTO> findById(@PathVariable Long orderId) {
-        OrderDTO order = orderService.getOrder(orderId);
+        OrderDTO order = this.getOrderUseCase.execute(orderId);
         return ResponseEntity.ok().body(order);
     }
 
@@ -40,7 +54,7 @@ public ResponseEntity<OrderDTO> findById(@PathVariable Long orderId) {
             summary = "Create a new order",
             description = "Create a new order and return the new order's data")
     public ResponseEntity<OrderDTO> startNewOrder() {
-        OrderDTO order = orderService.startNewOrder();
+        OrderDTO order = this.startNewOrderUseCase.execute();
         URI uri =
                 ServletUriComponentsBuilder.fromCurrentRequest()
                         .path("/{orderId}")
@@ -53,12 +67,9 @@ public ResponseEntity<OrderDTO> startNewOrder() {
     @Operation(summary = "Add a product to an order", description = "Adds a product to an order")
     public ResponseEntity<OrderDTO> addProduct(
             @PathVariable Long orderId, @RequestBody AddOrderProductRequest request) {
-        var command = new AddProductToOrderCommand();
-        command.setOrderId(orderId);
-        command.setProductId(request.getProductId());
-        command.setProductQuantity(request.getQuantity());
-
-        OrderDTO order = orderService.addProductToOrder(command);
+        OrderDTO order =
+                this.addProductToOrderUseCase.execute(
+                        orderId, request.getProductId(), request.getQuantity());
         return ResponseEntity.ok().body(order);
     }
 
@@ -68,11 +79,7 @@ public ResponseEntity<OrderDTO> addProduct(
             description = "Removes a product from an order")
     public ResponseEntity<OrderDTO> removeProduct(
             @PathVariable Long orderId, @PathVariable Long productId) {
-        var command = new RemoveProductFromOrderCommand();
-        command.setOrderId(orderId);
-        command.setProductId(productId);
-
-        OrderDTO order = orderService.removeProductFromOrder(command);
+        OrderDTO order = this.removeProductFromOrderUseCase.execute(orderId, productId);
         return ResponseEntity.ok().body(order);
     }
 
@@ -81,10 +88,7 @@ public ResponseEntity<OrderDTO> removeProduct(
             summary = "Submit an order for preparation",
             description = "Submits an order for preparation and return the order's data")
     public ResponseEntity<OrderDTO> submitOrder(@PathVariable Long orderId) {
-        var command = new SubmitOrderCommand();
-        command.setOrderId(orderId);
-
-        OrderDTO order = orderService.submitOrder(command);
+        OrderDTO order = this.submitOrderUseCase.execute(orderId);
         return ResponseEntity.ok().body(order);
     }
 }

src/main/java/br/com/fiap/grupo30/fastfood/adapters/in/rest/exceptions/ResourceExceptionHandler.java

@@ -4,7 +4,6 @@
 import br.com.fiap.grupo30.fastfood.application.services.exceptions.ResourceBadRequestException;
 import br.com.fiap.grupo30.fastfood.application.services.exceptions.ResourceConflictException;
 import br.com.fiap.grupo30.fastfood.application.services.exceptions.ResourceNotFoundException;
-import br.com.fiap.grupo30.fastfood.application.services.exceptions.UserCantChangeOrderAfterSubmitException;
 import jakarta.servlet.http.HttpServletRequest;
 import java.time.Instant;
 import org.springframework.http.HttpStatus;
@@ -65,17 +64,4 @@ public ResponseEntity<StandardError> database(DatabaseException e, HttpServletRe
         err.setPath(request.getRequestURI());
         return ResponseEntity.status(status).body(err);
     }
-
-    @ExceptionHandler(UserCantChangeOrderAfterSubmitException.class)
-    public ResponseEntity<StandardError> userCantChangeOrderAfterSubmit(
-            UserCantChangeOrderAfterSubmitException e, HttpServletRequest request) {
-        HttpStatus status = HttpStatus.BAD_REQUEST;
-        StandardError err = new StandardError();
-        err.setTimestamp(Instant.now());
-        err.setStatus(status.value());
-        err.setError("UserCantChangeOrderAfterSubmit exception");
-        err.setMessage(e.getMessage());
-        err.setPath(request.getRequestURI());
-        return ResponseEntity.status(status).body(err);
-    }
 }

src/main/java/br/com/fiap/grupo30/fastfood/application/services/exceptions/CantChangeOrderProductsAfterSubmitException.java

@@ -0,0 +1,17 @@
+package br.com.fiap.grupo30.fastfood.application.services.exceptions;
+
+import java.io.Serial;
+
+public class CantChangeOrderProductsAfterSubmitException extends DomainValidationException {
+
+    @Serial private static final long serialVersionUID = 1L;
+    private static final String MESSAGE = "Can not change products of a submitted order";
+
+    public CantChangeOrderProductsAfterSubmitException() {
+        super(MESSAGE);
+    }
+
+    public CantChangeOrderProductsAfterSubmitException(Throwable exception) {
+        super(MESSAGE, exception);
+    }
+}

src/main/java/br/com/fiap/grupo30/fastfood/application/services/exceptions/CantSubmitOrderWithoutProductsException.java

@@ -0,0 +1,16 @@
+package br.com.fiap.grupo30.fastfood.application.services.exceptions;
+
+import java.io.Serial;
+
+public class CantSubmitOrderWithoutProductsException extends DomainValidationException {
+    @Serial private static final long serialVersionUID = 1L;
+    private static final String MESSAGE = "Can not submit order without products";
+
+    public CantSubmitOrderWithoutProductsException() {
+        super(MESSAGE);
+    }
+
+    public CantSubmitOrderWithoutProductsException(Throwable exception) {
+        super(MESSAGE, exception);
+    }
+}

src/main/java/br/com/fiap/grupo30/fastfood/application/services/exceptions/DomainValidationException.java

@@ -0,0 +1,15 @@
+package br.com.fiap.grupo30.fastfood.application.services.exceptions;
+
+import java.io.Serial;
+
+public abstract class DomainValidationException extends ResourceBadRequestException {
+    @Serial private static final long serialVersionUID = 1L;
+
+    public DomainValidationException(String msg) {
+        super(msg);
+    }
+
+    public DomainValidationException(String msg, Throwable exception) {
+        super(msg, exception);
+    }
+}

src/main/java/br/com/fiap/grupo30/fastfood/application/services/exceptions/InvalidCpfException.java

@@ -0,0 +1,16 @@
+package br.com.fiap.grupo30.fastfood.application.services.exceptions;
+
+import java.io.Serial;
+
+public class InvalidCpfException extends DomainValidationException {
+    @Serial private static final long serialVersionUID = 1L;
+    private static final String MESSAGE_TEMPLATE = "Invalid CPF: %s";
+
+    public InvalidCpfException(String cpf) {
+        super(String.format(MESSAGE_TEMPLATE, cpf));
+    }
+
+    public InvalidCpfException(String cpf, Throwable exception) {
+        super(String.format(MESSAGE_TEMPLATE, cpf), exception);
+    }
+}

src/main/java/br/com/fiap/grupo30/fastfood/application/services/exceptions/ResourceBadRequestException.java

@@ -2,10 +2,14 @@
 
 import java.io.Serial;
 
-public class ResourceBadRequestException extends RuntimeException {
+public abstract class ResourceBadRequestException extends RuntimeException {
     @Serial private static final long serialVersionUID = 1L;
 
     public ResourceBadRequestException(String msg) {
         super(msg);
     }
+
+    public ResourceBadRequestException(String msg, Throwable exception) {
+        super(msg, exception);
+    }
 }

src/main/java/br/com/fiap/grupo30/fastfood/application/services/impl/CustomerServiceImpl.java

@@ -4,7 +4,7 @@
 import br.com.fiap.grupo30.fastfood.application.mapper.impl.CustomerDTOMapper;
 import br.com.fiap.grupo30.fastfood.application.mapper.impl.CustomerMapper;
 import br.com.fiap.grupo30.fastfood.application.services.CustomerService;
-import br.com.fiap.grupo30.fastfood.application.services.exceptions.ResourceBadRequestException;
+import br.com.fiap.grupo30.fastfood.application.services.exceptions.InvalidCpfException;
 import br.com.fiap.grupo30.fastfood.application.services.exceptions.ResourceConflictException;
 import br.com.fiap.grupo30.fastfood.application.services.exceptions.ResourceNotFoundException;
 import br.com.fiap.grupo30.fastfood.domain.vo.CPF;
@@ -45,7 +45,7 @@ public CustomerDTO findCustomerByCpf(String cpf) {
     public CustomerDTO insert(CustomerDTO dto) {
         String cpfDTO = dto.getCpf();
         if (!CPF.isValid(cpfDTO)) {
-            throw new ResourceBadRequestException("Invalid CPF: " + cpfDTO);
+            throw new InvalidCpfException(cpfDTO);
         }
         try {
             dto.setCpf(CPF.removeNonDigits(cpfDTO));