feat(admin): 관리자 페이지 캐릭터 상세 API 구현

src/main/kotlin/kr/co/vividnext/sodalive/admin/chat/character/AdminChatCharacterController.kt

@@ -21,6 +21,7 @@ import org.springframework.retry.annotation.Backoff
 import org.springframework.retry.annotation.Retryable
 import org.springframework.security.access.prepost.PreAuthorize
 import org.springframework.web.bind.annotation.GetMapping
+import org.springframework.web.bind.annotation.PathVariable
 import org.springframework.web.bind.annotation.PostMapping
 import org.springframework.web.bind.annotation.PutMapping
 import org.springframework.web.bind.annotation.RequestMapping
@@ -68,6 +69,21 @@ class AdminChatCharacterController(
         ApiResponse.ok(response)
     }
 
+    /**
+     * 캐릭터 상세 정보 조회 API
+     *
+     * @param characterId 캐릭터 ID
+     * @return 캐릭터 상세 정보
+     */
+    @GetMapping("/{characterId}")
+    fun getCharacterDetail(
+        @PathVariable characterId: Long
+    ) = run {
+        val response = adminService.getChatCharacterDetail(characterId, imageHost)
+
+        ApiResponse.ok(response)
+    }
+
     @PostMapping("/register")
     @Retryable(
         value = [Exception::class],

src/main/kotlin/kr/co/vividnext/sodalive/admin/chat/character/dto/ChatCharacterDetailResponse.kt

@@ -0,0 +1,83 @@
+package kr.co.vividnext.sodalive.admin.chat.character.dto
+
+import kr.co.vividnext.sodalive.chat.character.ChatCharacter
+
+data class ChatCharacterDetailResponse(
+    val id: Long,
+    val characterUUID: String,
+    val name: String,
+    val imageUrl: String?,
+    val description: String,
+    val systemPrompt: String,
+    val age: Int?,
+    val gender: String?,
+    val mbti: String?,
+    val speechPattern: String?,
+    val speechStyle: String?,
+    val appearance: String?,
+    val isActive: Boolean,
+    val tags: List<String>,
+    val hobbies: List<String>,
+    val values: List<String>,
+    val goals: List<String>,
+    val relationships: List<String>,
+    val personalities: List<PersonalityResponse>,
+    val backgrounds: List<BackgroundResponse>,
+    val memories: List<MemoryResponse>
+) {
+    companion object {
+        fun from(chatCharacter: ChatCharacter, imageHost: String = ""): ChatCharacterDetailResponse {
+            val fullImagePath = if (chatCharacter.imagePath != null && imageHost.isNotEmpty()) {
+                "$imageHost/${chatCharacter.imagePath}"
+            } else {
+                chatCharacter.imagePath
+            }
+
+            return ChatCharacterDetailResponse(
+                id = chatCharacter.id!!,
+                characterUUID = chatCharacter.characterUUID,
+                name = chatCharacter.name,
+                imageUrl = fullImagePath,
+                description = chatCharacter.description,
+                systemPrompt = chatCharacter.systemPrompt,
+                age = chatCharacter.age,
+                gender = chatCharacter.gender,
+                mbti = chatCharacter.mbti,
+                speechPattern = chatCharacter.speechPattern,
+                speechStyle = chatCharacter.speechStyle,
+                appearance = chatCharacter.appearance,
+                isActive = chatCharacter.isActive,
+                tags = chatCharacter.tagMappings.map { it.tag.tag },
+                hobbies = chatCharacter.hobbyMappings.map { it.hobby.hobby },
+                values = chatCharacter.valueMappings.map { it.value.value },
+                goals = chatCharacter.goalMappings.map { it.goal.goal },
+                relationships = chatCharacter.relationships.map { it.relationShip },
+                personalities = chatCharacter.personalities.map {
+                    PersonalityResponse(it.trait, it.description)
+                },
+                backgrounds = chatCharacter.backgrounds.map {
+                    BackgroundResponse(it.topic, it.description)
+                },
+                memories = chatCharacter.memories.map {
+                    MemoryResponse(it.title, it.content, it.emotion)
+                }
+            )
+        }
+    }
+}
+
+data class PersonalityResponse(
+    val trait: String,
+    val description: String
+)
+
+data class BackgroundResponse(
+    val topic: String,
+    val description: String
+)
+
+data class MemoryResponse(
+    val title: String,
+    val content: String,
+    val emotion: String
+)

src/main/kotlin/kr/co/vividnext/sodalive/admin/chat/character/service/AdminChatCharacterService.kt

@@ -1,8 +1,10 @@
 package kr.co.vividnext.sodalive.admin.chat.character.service
 
+import kr.co.vividnext.sodalive.admin.chat.character.dto.ChatCharacterDetailResponse
 import kr.co.vividnext.sodalive.admin.chat.character.dto.ChatCharacterListPageResponse
 import kr.co.vividnext.sodalive.admin.chat.character.dto.ChatCharacterListResponse
 import kr.co.vividnext.sodalive.chat.character.repository.ChatCharacterRepository
+import kr.co.vividnext.sodalive.common.SodaException
 import org.springframework.data.domain.PageRequest
 import org.springframework.data.domain.Pageable
 import org.springframework.data.domain.Sort
@@ -43,4 +45,20 @@ class AdminChatCharacterService(
     fun createDefaultPageRequest(page: Int = 0, size: Int = 20): PageRequest {
         return PageRequest.of(page, size, Sort.by(Sort.Direction.DESC, "createdAt"))
     }
+
+    /**
+     * 캐릭터 상세 정보 조회
+     *
+     * @param characterId 캐릭터 ID
+     * @param imageHost 이미지 호스트 URL
+     * @return 캐릭터 상세 정보
+     * @throws SodaException 캐릭터를 찾을 수 없는 경우
+     */
+    @Transactional(readOnly = true)
+    fun getChatCharacterDetail(characterId: Long, imageHost: String = ""): ChatCharacterDetailResponse {
+        val chatCharacter = chatCharacterRepository.findById(characterId)
+            .orElseThrow { SodaException("해당 ID의 캐릭터를 찾을 수 없습니다: $characterId") }
+
+        return ChatCharacterDetailResponse.from(chatCharacter, imageHost)
+    }
 }