Age input when editing/adding pet profile

backend/src/main/java/com/petshop/backend/dto/pet/MyPetRequest.java

@@ -1,5 +1,7 @@
 package com.petshop.backend.dto.pet;
 
+import jakarta.validation.constraints.Max;
+import jakarta.validation.constraints.Min;
 import jakarta.validation.constraints.NotBlank;
 import jakarta.validation.constraints.Size;
 
@@ -16,6 +18,10 @@ public class MyPetRequest {
     @Size(max = 50, message = "Breed must not exceed 50 characters")
     private String breed;
 
+    @Min(value = 0, message = "Age must be 0 or greater")
+    @Max(value = 100, message = "Age must not exceed 100")
+    private Integer petAge;
+
     public String getPetName() {
         return petName;
     }
@@ -39,4 +45,12 @@ public class MyPetRequest {
     public void setBreed(String breed) {
         this.breed = breed;
     }
+
+    public Integer getPetAge() {
+        return petAge;
+    }
+
+    public void setPetAge(Integer petAge) {
+        this.petAge = petAge;
+    }
 }

backend/src/main/java/com/petshop/backend/dto/pet/MyPetResponse.java

@@ -6,17 +6,19 @@ public class MyPetResponse {
     private String petName;
     private String species;
     private String breed;
+    private Integer petAge;
     private String imageUrl;
     private String petStatus;
 
     public MyPetResponse() {
     }
 
-    public MyPetResponse(Long customerPetId, String petName, String species, String breed, String imageUrl, String petStatus) {
+    public MyPetResponse(Long customerPetId, String petName, String species, String breed, Integer petAge, String imageUrl, String petStatus) {
         this.customerPetId = customerPetId;
         this.petName = petName;
         this.species = species;
         this.breed = breed;
+        this.petAge = petAge;
         this.imageUrl = imageUrl;
         this.petStatus = petStatus;
     }
@@ -53,6 +55,14 @@ public class MyPetResponse {
         this.breed = breed;
     }
 
+    public Integer getPetAge() {
+        return petAge;
+    }
+
+    public void setPetAge(Integer petAge) {
+        this.petAge = petAge;
+    }
+
     public String getImageUrl() {
         return imageUrl;
     }

backend/src/main/java/com/petshop/backend/service/PetService.java

@@ -357,6 +357,7 @@ public class PetService {
                 pet.getPetName(),
                 pet.getPetSpecies(),
                 pet.getPetBreed(),
+                pet.getPetAge(),
                 pet.getImageUrl() != null && !pet.getImageUrl().isBlank() ? "/api/v1/pets/" + pet.getPetId() + "/image" : null,
                 pet.getPetStatus()
         );
@@ -366,7 +367,7 @@ public class PetService {
         pet.setPetName(request.getPetName().trim());
         pet.setPetSpecies(request.getSpecies().trim());
         pet.setPetBreed(normalizeOptional(request.getBreed()));
-        pet.setPetAge(null);
+        pet.setPetAge(request.getPetAge());
         pet.setPetPrice(null);
     }