feat(event): v2 일반 이벤트 상세 조회를 추가한다

src/main/kotlin/kr/co/vividnext/sodalive/configs/SecurityConfig.kt

@@ -188,6 +188,7 @@ class SecurityConfig(
             .antMatchers("/live/recommend/channel").permitAll()
             .antMatchers(HttpMethod.GET, "/live/room").permitAll()
             .antMatchers(HttpMethod.GET, "/event").permitAll()
+            .antMatchers(HttpMethod.GET, "/api/v2/events/*").permitAll()
             .antMatchers(HttpMethod.GET, "/live/recommend").permitAll()
             .antMatchers("/ad-tracking/app-launch").permitAll()
             .antMatchers(HttpMethod.GET, "/notice/latest").permitAll()

src/main/kotlin/kr/co/vividnext/sodalive/v2/api/event/adapter/in/web/EventDetailController.kt

@@ -0,0 +1,20 @@
+package kr.co.vividnext.sodalive.v2.api.event.adapter.`in`.web
+
+import kr.co.vividnext.sodalive.common.ApiResponse
+import kr.co.vividnext.sodalive.member.Member
+import kr.co.vividnext.sodalive.v2.api.event.application.EventDetailService
+import org.springframework.security.core.annotation.AuthenticationPrincipal
+import org.springframework.web.bind.annotation.GetMapping
+import org.springframework.web.bind.annotation.PathVariable
+import org.springframework.web.bind.annotation.RequestMapping
+import org.springframework.web.bind.annotation.RestController
+
+@RestController
+@RequestMapping("/api/v2/events")
+class EventDetailController(private val service: EventDetailService) {
+    @GetMapping("/{id}")
+    fun getEvent(
+        @PathVariable id: Long,
+        @AuthenticationPrincipal(expression = "#this == 'anonymousUser' ? null : member") member: Member?
+    ) = ApiResponse.ok(service.getEvent(id, member))
+}

src/main/kotlin/kr/co/vividnext/sodalive/v2/api/event/application/EventDetailService.kt

@@ -0,0 +1,55 @@
+package kr.co.vividnext.sodalive.v2.api.event.application
+
+import kr.co.vividnext.sodalive.common.SodaException
+import kr.co.vividnext.sodalive.event.EventItem
+import kr.co.vividnext.sodalive.event.EventRepository
+import kr.co.vividnext.sodalive.i18n.Lang
+import kr.co.vividnext.sodalive.member.Member
+import kr.co.vividnext.sodalive.member.MemberRole
+import kr.co.vividnext.sodalive.member.auth.AuthRepository
+import kr.co.vividnext.sodalive.member.contentpreference.MemberContentPreferenceService
+import org.springframework.beans.factory.annotation.Value
+import org.springframework.data.repository.findByIdOrNull
+import org.springframework.stereotype.Service
+import org.springframework.transaction.annotation.Transactional
+import java.time.LocalDateTime
+
+@Service
+class EventDetailService(
+    private val repository: EventRepository,
+    private val authRepository: AuthRepository,
+    private val memberContentPreferenceService: MemberContentPreferenceService,
+    @Value("\${cloud.aws.cloud-front.host}")
+    private val cloudFrontHost: String
+) {
+    @Transactional(readOnly = true)
+    fun getEvent(id: Long, member: Member?): EventItem {
+        if (id <= 0) throw SodaException(messageKey = "common.error.invalid_request")
+
+        val event = repository.findByIdOrNull(id)
+            ?: throw SodaException(messageKey = "common.error.invalid_request")
+        val now = LocalDateTime.now()
+        val lang = if (memberContentPreferenceService.resolveCountryCode(member) == "JP") Lang.JA else Lang.KO
+
+        if (!event.isActive || event.startDate > now || event.endDate < now || event.lang != lang) {
+            throw SodaException(messageKey = "common.error.invalid_request")
+        }
+
+        if (member?.role != MemberRole.ADMIN) {
+            val isAdult = member?.id?.let { authRepository.getAuthIdByMemberId(it) != null } ?: false
+            if (event.isAdult != null && event.isAdult != isAdult) {
+                throw SodaException(messageKey = "common.error.invalid_request")
+            }
+        }
+
+        return EventItem(
+            id = id,
+            thumbnailImageUrl = imageUrl(event.thumbnailImage),
+            detailImageUrl = event.detailImage?.let { imageUrl(it) },
+            popupImageUrl = event.popupImage?.let { imageUrl(it) },
+            link = event.link
+        )
+    }
+
+    private fun imageUrl(image: String): String = if (image.startsWith("https://")) image else "$cloudFrontHost/$image"
+}