Update Like, ApiResponse

BE/src/main/java/org/example/repositories/UserRepository.java

@@ -21,12 +21,12 @@ public interface UserRepository extends Neo4jRepository<User, Long> {
     @Query("match (u:User), (p:POST)\n" +
             "WHERE id(u) = $nameId AND id(p) = $postId\n" +
             "create (u) - [:LIKE] -> (p)")
-    void createLike(@Param("nameId") Long nameId, @Param("postId") Long postId);
+    void createLike(@Param("nameId") Long nameId, @Param("postId*") Long postId);
 
-    @Query("match (a:User)-[r:LIKE]-> (b:POST)" +
-            "WHERE id(a) = $id AND id(b) = $idd" +
+    @Query("match (a:User)-[r:LIKE]-> (b:POST)\n" +
+            "WHERE id(a) = $id AND id(b) = $idd\n" +
             "RETURN COUNT(r) > 0 AS Relationship")
-    boolean checkLike(Long userId, Long postId);
+    boolean checkLike(@Param("id") Long userId,@Param("idd") Long postId);
 
 //    @Query("MATCH (user:User), (course:Course) WHERE user.username = $username AND course.identifier = $identifier " +
 //            "CREATE (user)-[:ENROLLED_IN]->(course) RETURN user, course")

BE/src/main/java/org/example/services/UserService.java

@@ -38,7 +38,12 @@ public class UserService {
     public CreateLikeRequest createLike(CreateLikeRequest request) {
         Long userId = request.getUserId();
         Long postId = request.getPostId();
+        if(userRepository.checkLike(userId, postId)){
+            throw new IllegalArgumentException("Already liked");
+        }
         userRepository.createLike(userId, postId);
         return request;
     }
+
+
 }