fix(creator): 팬Talk 답글 수정을 확인한다

SodaLive/Sources/I18n/I18n.swift

@@ -3475,6 +3475,18 @@ If you block this user, the following features will be restricted.
         static var replyPlaceholder: String {
             pick(ko: "답글을 입력하세요", en: "Enter a reply", ja: "返信を入力してください")
         }
+
+        static var replaceReplyTitle: String {
+            pick(ko: "답글을 수정할까요?", en: "Replace your reply?", ja: "返信を修正しますか？")
+        }
+
+        static var replaceReplyMessage: String {
+            pick(ko: "이미 작성한 답글이 있어요. 확인을 누르면 기존 답글이 새 내용으로 수정됩니다.", en: "You already have a reply. If you continue, the existing reply will be updated with the new content.", ja: "すでに返信があります。確認すると既存の返信が新しい内容に修正されます。")
+        }
+
+        static var replaceReplyConfirm: String {
+            pick(ko: "수정하기", en: "Update", ja: "修正する")
+        }
     }
 
     enum CreatorChannelFanTalk {

SodaLive/Sources/V2/CreatorChannel/FanTalk/Components/CreatorChannelFanTalkListItem.swift

@@ -20,7 +20,7 @@ struct CreatorChannelFanTalkListItem: View {
                     .frame(maxWidth: .infinity, alignment: .leading)
                     .padding(.leading, 50)
                     .background(alignment: .topLeading) {
-                        if fanTalk.creatorReplies.isEmpty == false {
+                        if fanTalk.latestCreatorReply != nil {
                             GeometryReader { proxy in
                                 CreatorChannelFanTalkReplyConnector()
                                     .stroke(Color.gray800, style: StrokeStyle(lineWidth: 2, lineCap: .round, lineJoin: .round))
@@ -29,7 +29,7 @@ struct CreatorChannelFanTalkListItem: View {
                         }
                     }
 
-                if fanTalk.creatorReplies.isEmpty == false {
+                if fanTalk.latestCreatorReply != nil {
                     replies
                         .padding(.leading, 50)
                 }
@@ -95,7 +95,7 @@ struct CreatorChannelFanTalkListItem: View {
 
     private var replies: some View {
         VStack(alignment: .leading, spacing: SodaSpacing.s8) {
-            ForEach(fanTalk.creatorReplies) { reply in
+            if let reply = fanTalk.latestCreatorReply {
                 replyCard(reply)
             }
         }

SodaLive/Sources/V2/CreatorChannel/FanTalk/Models/CreatorChannelFanTalkTabResponse.swift

@@ -18,6 +18,21 @@ struct CreatorChannelFanTalkItemResponse: Decodable, Identifiable {
     let creatorReplies: [CreatorChannelFanTalkReplyResponse]
 
     var id: Int { fanTalkId }
+
+    var latestCreatorReply: CreatorChannelFanTalkReplyResponse? {
+        creatorReplies.max { lhs, rhs in
+            switch (DateParser.parse(lhs.createdAtUtc), DateParser.parse(rhs.createdAtUtc)) {
+            case let (lhsDate?, rhsDate?):
+                return lhsDate < rhsDate
+            case (nil, _?):
+                return true
+            case (_?, nil):
+                return false
+            case (nil, nil):
+                return lhs.createdAtUtc < rhs.createdAtUtc
+            }
+        }
+    }
 }
 
 struct CreatorChannelFanTalkReplyResponse: Decodable, Identifiable {

SodaLive/Sources/V2/CreatorChannel/ReplyDetail/CreatorChannelReplyDetailView.swift

@@ -60,6 +60,22 @@ struct CreatorChannelReplyDetailView: View {
                     onDimmedTap: dismissDeleteDialog
                 )
             }
+
+            if viewModel.isShowReplaceReplyDialog {
+                SodaV2ActionModal(
+                    title: I18n.CreatorChannelReplyDetail.replaceReplyTitle,
+                    message: I18n.CreatorChannelReplyDetail.replaceReplyMessage,
+                    button1: SodaV2ActionModalButton(
+                        label: I18n.CreatorChannelReplyDetail.replaceReplyConfirm,
+                        action: viewModel.confirmReplaceReply
+                    ),
+                    button2: SodaV2ActionModalButton(
+                        label: I18n.Common.cancel,
+                        action: viewModel.dismissReplaceReplyDialog
+                    ),
+                    onDimmedTap: viewModel.dismissReplaceReplyDialog
+                )
+            }
         }
         .navigationBarBackButtonHidden(true)
         .onAppear {

SodaLive/Sources/V2/CreatorChannel/ReplyDetail/CreatorChannelReplyDetailViewModel.swift

@@ -28,6 +28,7 @@ final class CreatorChannelReplyDetailViewModel: ObservableObject {
     @Published var editingItem: CreatorChannelReplyDetailDisplayItem?
     @Published var deletingItem: CreatorChannelReplyDetailDisplayItem?
     @Published var isShowDeleteDialog = false
+    @Published var isShowReplaceReplyDialog = false
 
     var isSendEnabled: Bool {
         replyText.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty == false
@@ -53,9 +54,9 @@ final class CreatorChannelReplyDetailViewModel: ObservableObject {
             fetchCommunityReplies(reset: true)
         case .fanTalk(let creatorId, let parentFanTalk):
             parentItem = CreatorChannelReplyDetailDisplayItem(fanTalk: parentFanTalk)
-            replies = parentFanTalk.creatorReplies.map {
+            replies = parentFanTalk.latestCreatorReply.map {
                 CreatorChannelReplyDetailDisplayItem(fanTalkReply: $0, creatorId: creatorId)
-            }
+            }.map { [$0] } ?? []
         }
     }
 
@@ -118,11 +119,23 @@ final class CreatorChannelReplyDetailViewModel: ObservableObject {
 
         if let editingItem {
             modify(item: editingItem)
+        } else if existingFanTalkCreatorReply != nil {
+            isShowReplaceReplyDialog = true
         } else {
             createReply()
         }
     }
 
+    func dismissReplaceReplyDialog() {
+        isShowReplaceReplyDialog = false
+    }
+
+    func confirmReplaceReply() {
+        guard let existingFanTalkCreatorReply, isLoading == false else { return }
+        isShowReplaceReplyDialog = false
+        modify(item: existingFanTalkCreatorReply)
+    }
+
     func confirmDelete() {
         guard let deletingItem, isLoading == false else { return }
         isShowDeleteDialog = false
@@ -328,9 +341,9 @@ final class CreatorChannelReplyDetailViewModel: ObservableObject {
                     if let data = decoded.data, decoded.success {
                         if let fanTalk = data.fanTalks.first(where: { $0.fanTalkId == parentFanTalk.fanTalkId }) {
                             self.isLoading = false
-                            self.replies = fanTalk.creatorReplies.map {
+                            self.replies = fanTalk.latestCreatorReply.map {
                                 CreatorChannelReplyDetailDisplayItem(fanTalkReply: $0, creatorId: creatorId)
-                            }
+                            }.map { [$0] } ?? []
                         } else if data.hasNext {
                             self.fetchFanTalkReplies(page: page + 1)
                         } else {
@@ -435,6 +448,11 @@ final class CreatorChannelReplyDetailViewModel: ObservableObject {
         return false
     }
 
+    private var existingFanTalkCreatorReply: CreatorChannelReplyDetailDisplayItem? {
+        guard case .fanTalk = context else { return nil }
+        return replies.first { $0.isCreatorReply }
+    }
+
     private func communityRepliesPublisher(page: Int) -> AnyPublisher<Response, MoyaError> {
         switch context {
         case .community(_, _, let parentComment):