feat: add UserResponseDTO and ShoppingList DTOs for improved data handling and validation

Author: omatheusmesmo

src/main/java/com/omatheusmesmo/shoppmate/list/dtos/ShoppingListRequestDTO.java

@@ -0,0 +1,12 @@
+package com.omatheusmesmo.shoppmate.list.dtos;
+
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotNull;
+
+public record ShoppingListRequestDTO(
+        @NotBlank(message = "List name cannot be blank")
+        String name,
+        @NotNull(message = "User ID cannot be null")
+        Long idUser
+) {
+}

src/main/java/com/omatheusmesmo/shoppmate/list/dtos/ShoppingListResponseDTO.java

@@ -0,0 +1,12 @@
+package com.omatheusmesmo.shoppmate.list.dtos;
+
+import com.omatheusmesmo.shoppmate.user.dtos.UserResponseDTO;
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotNull;
+
+public record ShoppingListResponseDTO(
+        Long idList,
+        String listName,
+        UserResponseDTO owner
+) {
+}

src/main/java/com/omatheusmesmo/shoppmate/list/mapper/ListMapper.java

@@ -0,0 +1,42 @@
+package com.omatheusmesmo.shoppmate.list.mapper;
+
+import com.omatheusmesmo.shoppmate.list.dtos.ShoppingListRequestDTO;
+import com.omatheusmesmo.shoppmate.list.dtos.ShoppingListResponseDTO;
+import com.omatheusmesmo.shoppmate.list.entity.ShoppingList;
+import com.omatheusmesmo.shoppmate.user.dtos.UserResponseDTO;
+import com.omatheusmesmo.shoppmate.user.entity.User;
+import com.omatheusmesmo.shoppmate.user.repository.UserRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import java.util.NoSuchElementException;
+
+@Component
+public class ListMapper {
+
+    @Autowired
+    private UserRepository userRepository;
+
+    public ShoppingList toEntity(ShoppingListRequestDTO dto){
+        User owner = userRepository.findById(dto.idUser())
+                .orElseThrow(()-> new NoSuchElementException("User not found with ID:" + dto.idUser()));
+
+        ShoppingList list = new ShoppingList(owner);
+        list.setName(dto.name());
+        return list;
+    }
+
+    public ShoppingListResponseDTO toResponseDTO(ShoppingList shoppingList){
+        UserResponseDTO ownerDTO = new UserResponseDTO(
+                shoppingList.getOwner().getId(),
+                shoppingList.getOwner().getFullName(),
+                shoppingList.getOwner().getEmail());
+
+        return new ShoppingListResponseDTO(
+                shoppingList.getId(),
+                shoppingList.getName(),
+                ownerDTO
+                );
+    }
+
+}

src/main/java/com/omatheusmesmo/shoppmate/user/dtos/UserResponseDTO.java

@@ -0,0 +1,8 @@
+package com.omatheusmesmo.shoppmate.user.dtos;
+
+public record UserResponseDTO(
+        Long id,
+        String fullName,
+        String email
+) {
+}