feat: 순서가 보장되지 않는 Set 필드에 대해, API 응답 시 순서가 일정하도록 수정

Author: Wo-ogie

src/main/kotlin/com/damaba/damaba/mapper/PhotographerMapper.kt

@@ -25,6 +25,10 @@ interface PhotographerMapper {
     fun toPhotographerResponse(photographer: Photographer): PhotographerResponse
 
     @Mapping(source = "saved", target = "isSaved")
+    @Mapping(
+        target = "mainPhotographyTypes",
+        expression = "java(new java.util.LinkedHashSet<>(photographerListItem.getMainPhotographyTypes()))"
+    )
     fun toPhotographerListItemResponse(photographerListItem: PhotographerListItem): PhotographerListItemResponse
 
     fun toPhotographerProfile(command: UpdatePhotographerProfileCommand): PhotographerProfile

src/main/kotlin/com/damaba/damaba/mapper/PromotionMapper.kt

@@ -9,16 +9,46 @@ import com.damaba.damaba.domain.promotion.PromotionListItem
 import com.damaba.damaba.domain.user.User
 import org.mapstruct.Mapper
 import org.mapstruct.Mapping
+import org.mapstruct.Named
 import org.mapstruct.factory.Mappers
+import com.damaba.damaba.controller.region.RegionResponse
+import com.damaba.damaba.domain.region.Region
 
 @Mapper(uses = [UserMapper::class, ImageMapper::class, RegionMapper::class])
 interface PromotionMapper {
+    @Mapping(
+        target = "photographyTypes",
+        expression = "java(new java.util.LinkedHashSet<>(promotion.getPhotographyTypes()))"
+    )
+    @Mapping(target = "activeRegions", source = "activeRegions", qualifiedByName = ["regionsToLinkedHashSet"])
+    @Mapping(
+        target = "hashtags",
+        expression = "java(new java.util.LinkedHashSet<>(promotion.getHashtags()))"
+    )
     fun toPromotionResponse(promotion: Promotion): PromotionResponse
 
     @Mapping(source = "saved", target = "isSaved")
+    @Mapping(
+        target = "photographyTypes",
+        expression = "java(new java.util.LinkedHashSet<>(promotionDetail.getPhotographyTypes()))"
+    )
+    @Mapping(target = "activeRegions", source = "activeRegions", qualifiedByName = ["regionsToLinkedHashSet"])
+    @Mapping(
+        target = "hashtags",
+        expression = "java(new java.util.LinkedHashSet<>(promotionDetail.getHashtags()))"
+    )
     fun toPromotionDetailResponse(promotionDetail: PromotionDetail): PromotionDetailResponse
 
     @Mapping(source = "saved", target = "isSaved")
+    @Mapping(
+        target = "photographyTypes",
+        expression = "java(new java.util.LinkedHashSet<>(promotionListItem.getPhotographyTypes()))"
+    )
+    @Mapping(target = "activeRegions", source = "activeRegions", qualifiedByName = ["regionsToLinkedHashSet"])
+    @Mapping(
+        target = "hashtags",
+        expression = "java(new java.util.LinkedHashSet<>(promotionListItem.getHashtags()))"
+    )
     fun toPromotionListItemResponse(promotionListItem: PromotionListItem): PromotionListItemResponse
 
     @Mapping(source = "promotion.id", target = "id")
@@ -37,6 +67,11 @@ interface PromotionMapper {
         isSaved: Boolean,
     ): PromotionListItem
 
+    @Named("regionsToLinkedHashSet")
+    fun regionsToLinkedHashSet(regions: Set<Region>): LinkedHashSet<RegionResponse> = regions.stream()
+        .map { region -> RegionMapper.INSTANCE.toRegionResponse(region) }
+        .collect(java.util.stream.Collectors.toCollection { LinkedHashSet() })
+
     companion object {
         val INSTANCE: PromotionMapper = Mappers.getMapper(PromotionMapper::class.java)
     }