Issue: (#138) 기념일 상세 조회

src/main/kotlin/gomushin/backend/couple/dto/response/AnniversaryDetailResponse.kt

@@ -0,0 +1,20 @@
+package gomushin.backend.couple.dto.response
+
+import gomushin.backend.couple.domain.entity.Anniversary
+import java.time.LocalDate
+
+data class AnniversaryDetailResponse(
+    val id: Long,
+    val title: String,
+    val anniversaryDate: LocalDate,
+) {
+    companion object {
+        fun of(anniversary: Anniversary): AnniversaryDetailResponse {
+            return AnniversaryDetailResponse(
+                id = anniversary.id,
+                title = anniversary.title,
+                anniversaryDate = anniversary.anniversaryDate,
+            )
+        }
+    }
+}

src/main/kotlin/gomushin/backend/couple/facade/AnniversaryFacade.kt

@@ -2,7 +2,9 @@ package gomushin.backend.couple.facade
 
 import gomushin.backend.core.CustomUserDetails
 import gomushin.backend.core.common.web.PageResponse
+import gomushin.backend.core.infrastructure.exception.BadRequestException
 import gomushin.backend.couple.domain.service.AnniversaryService
+import gomushin.backend.couple.dto.response.AnniversaryDetailResponse
 import gomushin.backend.couple.dto.response.MainAnniversaryResponse
 import gomushin.backend.couple.dto.response.TotalAnniversaryResponse
 import org.springframework.data.domain.PageRequest
@@ -32,7 +34,17 @@ class AnniversaryFacade(
         return PageResponse.from(anniversaryResponses)
     }
 
+    fun get(customUserDetails: CustomUserDetails, anniversaryId: Long): AnniversaryDetailResponse {
+        val anniversary = anniversaryService.getById(anniversaryId)
+        if (anniversary.coupleId != customUserDetails.getCouple().id) {
+            throw BadRequestException("sarangggun.anniversary.unauthorized")
+        }
+        return AnniversaryDetailResponse.of(anniversary)
+    }
+
     fun delete(customUserDetails: CustomUserDetails, anniversaryId: Long) {
         anniversaryService.delete(customUserDetails.getCouple(), anniversaryId)
     }
+
+
 }

src/main/kotlin/gomushin/backend/couple/presentation/AnniversaryController.kt

@@ -4,6 +4,7 @@ import gomushin.backend.core.CustomUserDetails
 import gomushin.backend.core.common.web.PageResponse
 import gomushin.backend.core.common.web.response.ApiResponse
 import gomushin.backend.couple.dto.request.GenerateAnniversaryRequest
+import gomushin.backend.couple.dto.response.AnniversaryDetailResponse
 import gomushin.backend.couple.dto.response.MainAnniversaryResponse
 import gomushin.backend.couple.dto.response.TotalAnniversaryResponse
 import gomushin.backend.couple.facade.AnniversaryFacade
@@ -15,7 +16,7 @@ import org.springframework.security.core.annotation.AuthenticationPrincipal
 import org.springframework.web.bind.annotation.*
 
 @RestController
-@Tag(name = "기념일 생성", description = "AnniversaryController")
+@Tag(name = "기념일", description = "AnniversaryController")
 class AnniversaryController(
     private val coupleFacade: CoupleFacade,
     private val anniversaryFacade: AnniversaryFacade
@@ -74,4 +75,20 @@ class AnniversaryController(
         val anniversaries = anniversaryFacade.getAnniversaryList(customUserDetails, safePage, size)
         return anniversaries
     }
+
+    @ResponseStatus(HttpStatus.OK)
+    @GetMapping(ApiPath.ANNIVERSARY)
+    @Operation(
+        summary = "기념일 상세 조회",
+        description = "getAnniversary"
+    )
+    fun getAnniversary(
+        @AuthenticationPrincipal customUserDetails: CustomUserDetails,
+        @PathVariable anniversaryId: Long
+    ): ApiResponse<AnniversaryDetailResponse> {
+        val anniversary = anniversaryFacade.get(customUserDetails, anniversaryId)
+        return ApiResponse.success(anniversary)
+    }
+
+
 }