feat: add ListItemRequestDTO and ListItemResponseDTO for improved data handling and mapping

Author: omatheusmesmo

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

@@ -0,0 +1,14 @@
+package com.omatheusmesmo.shoppmate.list.dtos;
+
+import jakarta.validation.constraints.Min;
+import jakarta.validation.constraints.NotNull;
+
+public record ListItemRequestDTO(
+        @NotNull(message = "List ID cannot be null")
+        Long listId,
+        @NotNull(message = "Item ID cannot be null")
+        Long itemId,
+        @Min(1)
+        Integer quantity
+        ) {
+}

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

@@ -0,0 +1,14 @@
+package com.omatheusmesmo.shoppmate.list.dtos;
+
+import com.omatheusmesmo.shoppmate.item.dto.ItemResponseDTO;
+import jakarta.validation.constraints.Min;
+import jakarta.validation.constraints.NotNull;
+
+public record ListItemResponseDTO(
+        ShoppingListResponseDTO shoppingList,
+        ItemResponseDTO item,
+        Long idListItem,
+        Integer quantity,
+        Boolean purchased
+        ) {
+}

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

@@ -0,0 +1,66 @@
+package com.omatheusmesmo.shoppmate.list.mapper;
+
+import com.omatheusmesmo.shoppmate.item.entity.Item;
+import com.omatheusmesmo.shoppmate.item.mapper.ItemMapper; // Supondo que você tenha/crie um
+import com.omatheusmesmo.shoppmate.item.repository.ItemRepository;
+import com.omatheusmesmo.shoppmate.list.dtos.ListItemRequestDTO;
+import com.omatheusmesmo.shoppmate.list.dtos.ListItemResponseDTO;
+import com.omatheusmesmo.shoppmate.list.entity.ListItem;
+import com.omatheusmesmo.shoppmate.list.entity.ShoppingList;
+import com.omatheusmesmo.shoppmate.list.repository.ShoppingListRepository; // Precisa do repositório
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import java.util.NoSuchElementException;
+
+@Component
+public class ListItemMapper {
+
+    @Autowired
+    private ShoppingListRepository shoppingListRepository;
+
+    @Autowired
+    private ItemRepository itemRepository;
+
+    @Autowired
+    private ListMapper listMapper;
+
+    @Autowired
+    private ItemMapper itemMapper;
+
+    public ListItem toEntity(ListItemRequestDTO dto) {
+        ShoppingList shoppingList = shoppingListRepository.findById(dto.listId())
+                .orElseThrow(() -> new NoSuchElementException("ShoppingList not found with ID: " + dto.listId()));
+
+        Item item = itemRepository.findById(dto.itemId())
+                .orElseThrow(() -> new NoSuchElementException("Item not found with ID: " + dto.itemId()));
+
+        ListItem listItem = new ListItem();
+        listItem.setShoppList(shoppingList);
+        listItem.setItem(item);
+        listItem.setQuantity(dto.quantity());
+        return listItem;
+    }
+
+    public ListItemResponseDTO toResponseDTO(ListItem listItem) {
+        return new ListItemResponseDTO(
+                listMapper.toResponseDTO(listItem.getShoppList()),
+                itemMapper.toResponseDTO(listItem.getItem()),
+                listItem.getId(),
+                listItem.getQuantity(),
+                listItem.getPurchased()
+        );
+    }
+
+    public void updateEntityFromDto(ListItemRequestDTO dto, ListItem entity) {
+         ShoppingList shoppingList = shoppingListRepository.findById(dto.listId())
+                 .orElseThrow(() -> new NoSuchElementException("ShoppingList not found with ID: " + dto.listId()));
+         Item item = itemRepository.findById(dto.itemId())
+                 .orElseThrow(() -> new NoSuchElementException("Item not found with ID: " + dto.itemId()));
+         entity.setShoppList(shoppingList);
+         entity.setItem(item);
+
+        entity.setQuantity(dto.quantity());
+    }
+
+}