fix(live-room): 방장 종료 후 오래된 룸 정보 오류 노출을 막는다

SodaLive/Sources/Live/Room/LiveRoomViewModel.swift

@@ -287,6 +287,7 @@ final class LiveRoomViewModel: NSObject, ObservableObject {
     private var blockedMemberIdList = Set<Int>()
     
     private var hasInvokedJoinChannel = false
+    private var hasDetectedHostOffline = false
     private var v2vMessageAssembler = V2vMessageAssembler()
     private var v2vAgentId: String?
     private var v2vSourceLanguage: String?
@@ -322,6 +323,35 @@ final class LiveRoomViewModel: NSObject, ObservableObject {
         liveRoomInfo?.creatorId == UserDefaults.int(forKey: .userId)
     }
 
+    private func shouldSuppressMissingRoomInfoError(_ message: String?) -> Bool {
+        let ignorableLiveRoomNotFoundMessages: Set<String> = [
+            "해당하는 라이브의 정보가 없습니다.",
+            "Live session information not found.",
+            "該当するライブの情報がありません。"
+        ]
+        
+        guard let message, ignorableLiveRoomNotFoundMessages.contains(message) else {
+            return false
+        }
+
+        return liveRoomInfo != nil
+            || hasInvokedJoinChannel
+            || hasDetectedHostOffline
+            || AppState.shared.roomId == 0
+    }
+
+    private func shouldRefreshRoomInfoOnMemberLeave(memberId: Int) -> Bool {
+        guard let liveRoomInfo = liveRoomInfo else {
+            return false
+        }
+
+        guard !hasDetectedHostOffline else {
+            return false
+        }
+
+        return liveRoomInfo.creatorId != memberId
+    }
+
     func stopV2VTranslationIfJoined(clearCaptionText: Bool = true) {
         guard isV2VJoined else { return }
         stopV2VTranslation(clearCaptionText: clearCaptionText)
@@ -616,6 +646,7 @@ final class LiveRoomViewModel: NSObject, ObservableObject {
                         let previousIsChatFrozen = self.isChatFrozen
                         let syncedIsChatFrozen = data.isChatFrozen ?? false
 
+                        self.hasDetectedHostOffline = false
                         self.liveRoomInfo = data
                         self.updateV2VAvailability(roomInfo: data)
                         
@@ -662,13 +693,17 @@ final class LiveRoomViewModel: NSObject, ObservableObject {
                             onSuccess(nickname)
                         }
                     } else {
-                        if let message = decoded.message {
-                            self.errorMessage = message
+                        if self.shouldSuppressMissingRoomInfoError(decoded.message) {
+                            DEBUG_LOG("Suppress stale getRoomInfo error during live-room teardown: \(decoded.message ?? "")")
                         } else {
-                            self.errorMessage = I18n.Common.commonError
+                            if let message = decoded.message {
+                                self.errorMessage = message
+                            } else {
+                                self.errorMessage = I18n.Common.commonError
+                            }
+                            
+                            self.isShowErrorPopup = true
                         }
-                        
-                        self.isShowErrorPopup = true
                     }
                     
                     self.isLoading = false
@@ -2973,12 +3008,13 @@ extension LiveRoomViewModel: AgoraRtcEngineDelegate {
 
             if uid == UInt(creatorId) {
                 // 라이브 종료
+                self.hasDetectedHostOffline = true
                 self.deInitAgoraEngine()
                 self.liveRoomInfo = nil
                 AppState.shared.errorMessage = I18n.LiveRoom.liveEndedMessage
                 AppState.shared.isShowErrorPopup = true
                 AppState.shared.roomId = 0
-            } else {
+            } else if self.shouldRefreshRoomInfoOnMemberLeave(memberId: Int(uid)) {
                 // get room info
                 self.getRoomInfo()
             }
@@ -3265,7 +3301,7 @@ extension LiveRoomViewModel: AgoraRtmClientDelegate {
                     }
                 }
             } else if eventType == .remoteLeaveChannel {
-                if let liveRoomInfo = liveRoomInfo, liveRoomInfo.creatorId != Int(memberId)! {
+                if shouldRefreshRoomInfoOnMemberLeave(memberId: Int(memberId)!) {
                     getRoomInfo()
                 }
             }