src/main/kotlin/roomescape/theme/business/ThemeService.kt

@@ -16,6 +16,13 @@ import roomescape.theme.web.*
 
 private val log: KLogger = KotlinLogging.logger {}
 
+/**
+ * Structure:
+ * - Public: 모두가 접근 가능한 메서드
+ * - Store Admin: 매장 관리자가 사용하는 메서드
+ * - HQ Admin: 본사 관리자가 사용하는 메서드
+ * - Common: 공통 메서드
+ */
 @Service
 class ThemeService(
     private val themeRepository: ThemeRepository,
@@ -23,6 +30,17 @@ class ThemeService(
     private val tsidFactory: TsidFactory,
     private val adminService: AdminService
 ) {
+    // ========================================
+    // Public (인증 불필요)
+    // ========================================
+    @Transactional(readOnly = true)
+    fun findInfoById(id: Long): ThemeInfoResponse {
+        log.info { "[ThemeService.findById] 테마 조회 시작: id=$id" }
+
+        return findOrThrow(id).toInfoResponse()
+            .also { log.info { "[ThemeService.findById] 테마 조회 완료: id=$id" } }
+    }
+
     @Transactional(readOnly = true)
     fun findThemesByIds(request: ThemeIdListResponse): ThemeInfoListResponse {
         log.info { "[ThemeService.findThemesByIds] 예약 페이지에서의 테마 목록 조회 시작: themeIds=${request.themeIds}" }
@@ -37,20 +55,14 @@ class ThemeService(
             result.add(theme)
         }
 
-        return result.toListResponse().also {
+        return result.toInfoListResponse().also {
             log.info { "[ThemeService.findThemesByIds] ${it.themes.size} / ${request.themeIds.size} 개 테마 조회 완료" }
         }
     }
 
-    @Transactional(readOnly = true)
-    fun findThemesForReservation(): ThemeInfoListResponse {
-        log.info { "[ThemeService.findThemesForReservation] 예약 페이지에서의 테마 목록 조회 시작" }
-
-        return themeRepository.findOpenedThemes()
-            .toListResponse()
-            .also { log.info { "[ThemeService.findThemesForReservation] ${it.themes.size}개 테마 조회 완료" } }
-    }
-
+    // ========================================
+    // HQ Admin (본사)
+    // ========================================
     @Transactional(readOnly = true)
     fun findAdminThemes(): AdminThemeSummaryListResponse {
         log.info { "[ThemeService.findAdminThemes] 관리자 페이지에서의 테마 목록 조회 시작" }
@@ -73,14 +85,6 @@ class ThemeService(
             .also { log.info { "[ThemeService.findAdminThemeDetail] 테마 상세 조회 완료: id=$id, name=${theme.name}" } }
     }
 
-    @Transactional(readOnly = true)
-    fun findSummaryById(id: Long): ThemeInfoResponse {
-        log.info { "[ThemeService.findById] 테마 조회 시작: id=$id" }
-
-        return findOrThrow(id).toSummaryResponse()
-            .also { log.info { "[ThemeService.findById] 테마 조회 완료: id=$id" } }
-    }
-
     @Transactional
     fun createTheme(request: ThemeCreateRequest): ThemeCreateResponseV2 {
         log.info { "[ThemeService.createTheme] 테마 생성 시작: name=${request.name}" }
@@ -137,6 +141,24 @@ class ThemeService(
         }
     }
 
+    // ========================================
+    // Store Admin (매장)
+    // ========================================
+    @Transactional(readOnly = true)
+    fun findActiveThemes(): SimpleActiveThemeListResponse {
+        log.info { "[ThemeService.findActiveThemes] open 상태인 모든 테마 조회 시작" }
+
+        return themeRepository.findActiveThemes()
+            .toSimpleActiveThemeResponse()
+            .also {
+                log.info { "[ThemeService.findActiveThemes] ${it.themes.size}개 테마 조회 완료" }
+            }
+    }
+
+
+    // ========================================
+    // Common (공통 메서드)
+    // ========================================
     private fun findOrThrow(id: Long): ThemeEntity {
         log.info { "[ThemeService.findOrThrow] 테마 조회 시작: id=$id" }
 

src/main/kotlin/roomescape/theme/docs/ThemeApi.kt

@@ -16,7 +16,7 @@ import roomescape.common.dto.response.CommonApiResponse
 import roomescape.theme.web.*
 
 @Tag(name = "5. 관리자 테마 API", description = "관리자 페이지에서 테마를 조회 / 추가 / 삭제할 때 사용합니다.")
-interface ThemeAPI {
+interface HQAdminThemeAPI {
     @AdminOnly(type = AdminType.HQ, privilege = Privilege.READ_SUMMARY)
     @Operation(summary = "모든 테마 조회", description = "관리자 페이지에서 요약된 테마 목록을 조회합니다.", tags = ["관리자 로그인이 필요한 API"])
     @ApiResponses(ApiResponse(responseCode = "200", description = "성공", useReturnTypeSchema = true))
@@ -44,14 +44,23 @@ interface ThemeAPI {
         @PathVariable id: Long,
         @Valid @RequestBody themeUpdateRequest: ThemeUpdateRequest
     ): ResponseEntity<CommonApiResponse<Unit>>
+}
 
-    @Public
-    @Operation(summary = "예약 페이지에서 모든 테마 조회", description = "모든 테마를 조회합니다.")
+interface StoreAdminThemeAPI {
+    @AdminOnly(type = AdminType.STORE, privilege = Privilege.READ_SUMMARY)
+    @Operation(summary = "테마 조회", description = "현재 open 상태인 모든 테마 ID + 이름 조회", tags = ["관리자 로그인이 필요한 API"])
     @ApiResponses(ApiResponse(responseCode = "200", description = "성공", useReturnTypeSchema = true))
-    fun findUserThemes(): ResponseEntity<CommonApiResponse<ThemeInfoListResponse>>
+    fun findActiveThemes(): ResponseEntity<CommonApiResponse<SimpleActiveThemeListResponse>>
+}
 
+interface PublicThemeAPI {
     @Public
-    @Operation(summary = "예약 페이지에서 입력한 날짜에 가능한 테마 조회", description = "입력한 날짜에 가능한 테마를 조회합니다.")
+    @Operation(summary = "입력된 모든 ID에 대한 테마 조회")
     @ApiResponses(ApiResponse(responseCode = "200", description = "성공", useReturnTypeSchema = true))
     fun findThemesByIds(request: ThemeIdListResponse): ResponseEntity<CommonApiResponse<ThemeInfoListResponse>>
+
+    @Public
+    @Operation(summary = "입력된 테마 ID에 대한 정보 조회")
+    @ApiResponses(ApiResponse(responseCode = "200", description = "성공", useReturnTypeSchema = true))
+    fun findThemeInfoById(@PathVariable id: Long): ResponseEntity<CommonApiResponse<ThemeInfoResponse>>
 }

src/main/kotlin/roomescape/theme/web/AdminThemeController.kt

@@ -4,30 +4,14 @@ import org.springframework.http.ResponseEntity
 import org.springframework.web.bind.annotation.*
 import roomescape.common.dto.response.CommonApiResponse
 import roomescape.theme.business.ThemeService
-import roomescape.theme.docs.ThemeAPI
+import roomescape.theme.docs.HQAdminThemeAPI
+import roomescape.theme.docs.StoreAdminThemeAPI
 import java.net.URI
 
 @RestController
-class ThemeController(
+class HQAdminThemeController(
     private val themeService: ThemeService,
-) : ThemeAPI {
-
-    @PostMapping("/themes/retrieve")
-    override fun findThemesByIds(
-        @RequestBody request: ThemeIdListResponse
-    ): ResponseEntity<CommonApiResponse<ThemeInfoListResponse>> {
-        val response = themeService.findThemesByIds(request)
-
-        return ResponseEntity.ok(CommonApiResponse(response))
-    }
-
-    @GetMapping("/themes")
-    override fun findUserThemes(): ResponseEntity<CommonApiResponse<ThemeInfoListResponse>> {
-        val response = themeService.findThemesForReservation()
-
-        return ResponseEntity.ok(CommonApiResponse(response))
-    }
-
+) : HQAdminThemeAPI {
     @GetMapping("/admin/themes")
     override fun findAdminThemes(): ResponseEntity<CommonApiResponse<AdminThemeSummaryListResponse>> {
         val response = themeService.findAdminThemes()
@@ -67,3 +51,16 @@ class ThemeController(
         return ResponseEntity.ok().build()
     }
 }
+
+@RestController
+class StoreAdminController(
+    private val themeService: ThemeService
+) : StoreAdminThemeAPI {
+
+    @GetMapping("/admin/themes/active")
+    override fun findActiveThemes(): ResponseEntity<CommonApiResponse<SimpleActiveThemeListResponse>> {
+        val response = themeService.findActiveThemes()
+
+        return ResponseEntity.ok(CommonApiResponse(response))
+    }
+}

src/main/kotlin/roomescape/theme/web/AdminThemeDto.kt

@@ -5,6 +5,18 @@ import roomescape.theme.infrastructure.persistence.Difficulty
 import roomescape.theme.infrastructure.persistence.ThemeEntity
 import java.time.LocalDateTime
 
+/**
+ * Theme API DTO
+ *
+ * Structure:
+ * - HQ Admin DTO: 본사 관리자가 사용하는 테마 관련 DTO들
+ * - Store Admin DTO: 매장 관리자가 사용하는 테마 관련 DTO들
+ */
+
+
+// ========================================
+// HQ Admin DTO (본사)
+// ========================================
 data class ThemeCreateRequest(
     val name: String,
     val description: String,
@@ -129,9 +141,9 @@ fun ThemeEntity.toAdminThemeDetailResponse(createdBy: OperatorInfo, updatedBy: O
         updatedBy = updatedBy
     )
 
-data class ThemeIdListResponse(
-    val themeIds: List<Long>
-)
+// ========================================
+// Store Admin DTO
+// ========================================
 
 data class ThemeInfoResponse(
     val id: Long,

src/main/kotlin/roomescape/theme/web/PublicThemeController.kt

@@ -0,0 +1,37 @@
+package roomescape.theme.web
+
+import org.springframework.http.ResponseEntity
+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.RequestBody
+import org.springframework.web.bind.annotation.RequestMapping
+import org.springframework.web.bind.annotation.RestController
+import roomescape.common.dto.response.CommonApiResponse
+import roomescape.theme.business.ThemeService
+import roomescape.theme.docs.PublicThemeAPI
+
+@RestController
+@RequestMapping("/themes")
+class PublicThemeController(
+    private val themeService: ThemeService,
+): PublicThemeAPI {
+
+    @PostMapping("/batch")
+    override fun findThemesByIds(
+        @RequestBody request: ThemeIdListRequest
+    ): ResponseEntity<CommonApiResponse<ThemeInfoListResponse>> {
+        val response = themeService.findThemesByIds(request)
+
+        return ResponseEntity.ok(CommonApiResponse(response))
+    }
+
+    @GetMapping("/{id}")
+    override fun findThemeInfoById(
+        @PathVariable id: Long
+    ): ResponseEntity<CommonApiResponse<ThemeInfoResponse>> {
+        val response = themeService.findInfoById(id)
+
+        return ResponseEntity.ok(CommonApiResponse(response))
+    }
+}

src/main/kotlin/roomescape/theme/web/PublicThemeDto.kt

@@ -0,0 +1,44 @@
+package roomescape.theme.web
+
+import roomescape.theme.infrastructure.persistence.Difficulty
+import roomescape.theme.infrastructure.persistence.ThemeEntity
+
+data class ThemeIdListRequest(
+    val themeIds: List<Long>
+)
+
+data class ThemeInfoResponse(
+    val id: Long,
+    val name: String,
+    val thumbnailUrl: String,
+    val description: String,
+    val difficulty: Difficulty,
+    val price: Int,
+    val minParticipants: Short,
+    val maxParticipants: Short,
+    val availableMinutes: Short,
+    val expectedMinutesFrom: Short,
+    val expectedMinutesTo: Short
+)
+
+fun ThemeEntity.toInfoResponse() = ThemeInfoResponse(
+    id = this.id,
+    name = this.name,
+    thumbnailUrl = this.thumbnailUrl,
+    description = this.description,
+    difficulty = this.difficulty,
+    price = this.price,
+    minParticipants = this.minParticipants,
+    maxParticipants = this.maxParticipants,
+    availableMinutes = this.availableMinutes,
+    expectedMinutesFrom = this.expectedMinutesFrom,
+    expectedMinutesTo = this.expectedMinutesTo
+)
+
+data class ThemeInfoListResponse(
+    val themes: List<ThemeInfoResponse>
+)
+
+fun List<ThemeEntity>.toInfoListResponse() = ThemeInfoListResponse(
+    themes = this.map { it.toInfoResponse() }
+)