[FIX] 태그 관련 수정 사항

src/main/java/com/official/memento/tag/controller/TagApiController.java

@@ -72,10 +72,10 @@ public ResponseEntity<SuccessResponse<?>> updateTag(
             @PathVariable final long tagId,
             @RequestBody final TagUpdateRequest tagUpdateRequest
     ) {
-        tagUpdateUseCase.update(TagUpdateCommand.of(
+        tagUpdateUseCase.update(TagUpdateCommand.updateWithHexColor(
                 authorizationUser.memberId(),
                 tagId,
-                tagUpdateRequest.color(),
+                tagUpdateRequest.hexCode(),
                 tagUpdateRequest.name()
         ));
         return SuccessResponse.of(

src/main/java/com/official/memento/tag/controller/dto/TagUpdateRequest.java

@@ -7,7 +7,7 @@
 public record TagUpdateRequest(
         @Schema(description = "태그 이름")
         String name,
-        @Schema(description = "태그 색상")
-        TagColor color
+        @Schema(description = "태그 색상 헥스코드")
+        String hexCode
 ) {
 }

src/main/java/com/official/memento/tag/domain/TagRepository.java

@@ -15,9 +15,11 @@ public interface TagRepository {
 
     Tag findById(final Long id);
 
-    List<Tag> findAllByMemberId(final Long memberId);
+    List<Tag> findAllByMemberIdOrderById(final Long memberId);
 
     Tag findByMemberIdAndTagColor(final Long memberId, final TagColor tagColor);
 
     Tag findDefaultTag(final Long memberId);
+
+    boolean existsByMemberIdAndName(final Long memberId, final String name);
 }

src/main/java/com/official/memento/tag/infrastructure/TagRepositoryAdapter.java

@@ -71,8 +71,8 @@ public Tag findById(Long id) {
     }
 
     @Override
-    public List<Tag> findAllByMemberId(Long memberId) {
-        return tagJpaRepository.findAllByMemberId(memberId)
+    public List<Tag> findAllByMemberIdOrderById(Long memberId) {
+        return tagJpaRepository.findAllByMemberIdOrderById(memberId)
                 .stream()
                 .map(entity -> Tag.withId(
                         entity.getId(),
@@ -106,4 +106,9 @@ public Tag findDefaultTag(final Long memberId){
                 entity.getMemberId()
         );
     }
+
+    @Override
+    public boolean existsByMemberIdAndName(Long memberId, String name) {
+        return tagJpaRepository.existsByMemberIdAndName(memberId, name);
+    }
 }

src/main/java/com/official/memento/tag/infrastructure/persistence/TagJpaRepository.java

@@ -9,10 +9,10 @@
 
 public interface TagJpaRepository extends JpaRepository<TagEntity, Long> {
     @Query(
-            value = "SELECT * FROM tag WHERE member_id = :memberId",
+            value = "SELECT * FROM tag WHERE member_id = :memberId ORDER BY id ASC",
             nativeQuery = true
     )
-    List<TagEntity> findAllByMemberId(Long memberId);
+    List<TagEntity> findAllByMemberIdOrderById(Long memberId);
 
     Optional<TagEntity> findByMemberIdAndColor(Long memberId, TagColor color);
 
@@ -23,4 +23,6 @@ public interface TagJpaRepository extends JpaRepository<TagEntity, Long> {
     Optional<TagEntity> findDefaultTag(Long memberId);
 
     void deleteAllByMemberId(final long memberId);
+
+    boolean existsByMemberIdAndName(Long memberId, String name);
 }

src/main/java/com/official/memento/tag/service/TagService.java

@@ -27,6 +27,7 @@ public class TagService implements TagCreateUseCase, TagGetUseCase, TagUpdateUse
     @Override
     @Transactional
     public Tag create(final TagCreateCommand command) {
+        validateDuplicateTagName(command.memberId(), command.name());
         final Tag tag = Tag.of(command.name(), command.color(), command.memberId());
         return tagRepository.save(tag);
     }
@@ -36,6 +37,7 @@ public Tag create(final TagCreateCommand command) {
     public void update(final TagUpdateCommand command) {
         Tag tag = tagRepository.findById(command.tagId());
         tag.checkOwn(command.memberId());
+        validateDuplicateTagName(command.memberId(), command.name());
 
         tag = tag.update(
                 command.name(),
@@ -71,10 +73,16 @@ private void validateNotDefaultTag(final Tag tag) {
         }
     }
 
+    private void validateDuplicateTagName(Long memberId, String name) {
+        if (tagRepository.existsByMemberIdAndName(memberId, name)) {
+            throw new InvalidRequestBodyException(ErrorCode.INVALID_JSON_FORMAT);
+        }
+    }
+
     @Transactional(readOnly = true)
     @Override
     public List<Tag> getTags(final long memberId) {
-        return tagRepository.findAllByMemberId(memberId);
+        return tagRepository.findAllByMemberIdOrderById(memberId);
     }
 
     @Transactional(readOnly = true)

src/main/java/com/official/memento/tag/service/command/TagUpdateCommand.java

@@ -16,4 +16,8 @@ public static TagUpdateCommand of(
     ) {
         return new TagUpdateCommand(memberId, tagId, color, name);
     }
+
+    public static TagUpdateCommand updateWithHexColor(Long memberId, Long tagId, String colorHex, String name) {
+        return new TagUpdateCommand(memberId, tagId, TagColor.fromHex(colorHex), name);
+    }
 }