Merge pull request #35 from onetime-with-members/feature/#34/url-vali…

…dation

[feat] : URL 변환 시 검증 로직을 추가한다

src/main/java/side/onetime/repository/EventRepository.java

@@ -8,4 +8,5 @@
 
 public interface EventRepository extends JpaRepository<Event,Long> {
     Optional<Event> findByEventId(UUID eventId);
+    boolean existsByEventId(UUID eventId);
 }

src/main/java/side/onetime/service/UrlService.java

@@ -3,21 +3,46 @@
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import side.onetime.dto.UrlDto;
+import side.onetime.exception.EventErrorResult;
+import side.onetime.exception.EventException;
+import side.onetime.repository.EventRepository;
 import side.onetime.util.Base62Util;
 
+import java.util.UUID;
+
 @Service
 @RequiredArgsConstructor
 public class UrlService {
+    private final EventRepository eventRepository;
 
     // URL 단축 메서드
     public UrlDto.ConvertToShortenUrlResponse convertToShortenUrl(UrlDto.ConvertToShortenUrlRequest convertToShortenUrlRequest) {
         String originalUrl = convertToShortenUrlRequest.getOriginalUrl();
+
+        UUID eventId = extractEventIdFromUrl(originalUrl);
+        if (!eventRepository.existsByEventId(eventId)) {
+            throw new EventException(EventErrorResult._NOT_FOUND_EVENT);
+        }
+
         return UrlDto.ConvertToShortenUrlResponse.of(Base62Util.convertToShortenUrl(originalUrl));
     }
 
-    // URL 단축 메서드
+    // URL 복원 메서드
     public UrlDto.ConvertToOriginalUrlResponse convertToOriginalUrl(UrlDto.ConvertToOriginalUrlRequest convertToOriginalUrlRequest) {
         String shortenUrl = convertToOriginalUrlRequest.getShortenUrl();
-        return UrlDto.ConvertToOriginalUrlResponse.of(Base62Util.convertToOriginalUrl(shortenUrl));
+        String originalUrl = Base62Util.convertToOriginalUrl(shortenUrl);
+
+        UUID eventId = extractEventIdFromUrl(originalUrl);
+        if (!eventRepository.existsByEventId(eventId)) {
+            throw new EventException(EventErrorResult._NOT_FOUND_EVENT);
+        }
+
+        return UrlDto.ConvertToOriginalUrlResponse.of(originalUrl);
+    }
+
+    // URL에서 Event ID 추출
+    private UUID extractEventIdFromUrl(String url) {
+        String[] parts = url.split("/");
+        return UUID.fromString(parts[parts.length - 1]);
     }
 }

src/main/java/side/onetime/util/Base62Util.java

@@ -1,12 +1,9 @@
 package side.onetime.util;
 
-import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Component;
-
 import java.math.BigInteger;
 
 @Component
-@RequiredArgsConstructor
 public class Base62Util {
     private static final String BASE62_CHARS = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
     private static final String SHORTEN_DOMAIN = "https://1-ti.me/";