feat: add update and delete operations for Firearm, including error handling

src/main/java/com/onixbyte/deltaforceguide/controller/FirearmController.java

@@ -48,5 +48,16 @@ public class FirearmController {
     public FirearmResponse addFirearm(@Validated @RequestBody FirearmRequest request) {
         return firearmService.addFirearm(request);
     }
+
+    @Operation(description = "更新指定武器的数据")
+    @PutMapping("/{id}")
+    public FirearmResponse updateFirearm(@PathVariable Long id, @Validated @RequestBody FirearmRequest request) {
+        return firearmService.updateFirearm(id, request);
     }
 
+    @Operation(description = "删除指定武器的数据")
+    @DeleteMapping("/{id}")
+    public void deleteFirearm(@PathVariable Long id) {
+        firearmService.deleteFirearm(id);
+    }
+}

src/main/java/com/onixbyte/deltaforceguide/service/FirearmService.java

@@ -5,6 +5,7 @@ import com.onixbyte.deltaforceguide.domain.dto.FirearmResponse;
 import com.onixbyte.deltaforceguide.domain.dto.PageResponse;
 import com.onixbyte.deltaforceguide.domain.entity.Firearm;
 import com.onixbyte.deltaforceguide.enumeration.FirearmType;
+import com.onixbyte.deltaforceguide.exeption.BizException;
 import com.onixbyte.deltaforceguide.repository.FirearmRepository;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
@@ -52,5 +53,28 @@ public class FirearmService {
         
         return FirearmResponse.from(firearm);
     }
+
+    @Transactional
+    public FirearmResponse updateFirearm(Long id, FirearmRequest request) {
+        var firearm = firearmRepository.findById(id)
+                .orElseThrow(() -> new BizException(HttpStatus.NOT_FOUND, "Firearm not found: " + id));
+
+        firearm.setName(request.name());
+        firearm.setType(request.type());
+        firearm.setLevel(request.level());
+        firearm.setCalibre(request.calibre());
+        firearm.setFireRate(request.fireRate());
+        firearm.setArmourDamage(request.armourDamage());
+        firearm.setBodyDamage(request.bodyDamage());
+        firearm.setReview(request.review());
+
+        return FirearmResponse.from(firearmRepository.save(firearm));
     }
 
+    @Transactional
+    public void deleteFirearm(Long id) {
+        Firearm firearm = firearmRepository.findById(id)
+                .orElseThrow(() -> new BizException(HttpStatus.NOT_FOUND, "Firearm not found: " + id));
+        firearmRepository.delete(firearm);
+    }
+}