[refactor] chzzk4j update to 0.1.1

Replaced `songListScope` with `songScope` in `WSSongRoutes` and `timerScope` in `WSTimerRoutes` to better reflect their respective purposes. Improves code clarity and consistency in scope usage.

build.gradle.kts

@@ -28,7 +28,7 @@ repositories {
 
 dependencies {
     // https://mvnrepository.com/artifact/ch.qos.logback/logback-classic
-    implementation("ch.qos.logback:logback-classic:1.5.12")
+    implementation("ch.qos.logback:logback-classic:1.5.13")
 
     // https://mvnrepository.com/artifact/org.jetbrains.kotlinx/kotlinx-coroutines-core
     implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.9.0")

chatbot/build.gradle.kts

@@ -16,10 +16,10 @@ dependencies {
     }
 
     // https://mvnrepository.com/artifact/io.github.R2turnTrue/chzzk4j
-    implementation("io.github.R2turnTrue:chzzk4j:0.0.12")
+    implementation("io.github.R2turnTrue:chzzk4j:0.1.1")
 
     // https://mvnrepository.com/artifact/ch.qos.logback/logback-classic
-    implementation("ch.qos.logback:logback-classic:1.5.12")
+    implementation("ch.qos.logback:logback-classic:1.5.13")
 
     // https://mvnrepository.com/artifact/org.jetbrains.kotlinx/kotlinx-coroutines-core
     implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.9.0")

chatbot/src/main/kotlin/space/mori/chzzk_bot/chatbot/chzzk/ChzzkHandler.kt

@@ -1,25 +1,31 @@
 package space.mori.chzzk_bot.chatbot.chzzk
 
+import com.google.gson.Gson
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.future.await
 import kotlinx.coroutines.launch
+import okhttp3.OkHttpClient
 import org.koin.java.KoinJavaComponent.inject
 import org.slf4j.Logger
 import org.slf4j.LoggerFactory
-import space.mori.chzzk_bot.chatbot.chzzk.Connector.chzzk
+import space.mori.chzzk_bot.chatbot.chzzk.Connector.client as ChzzkClient
 import space.mori.chzzk_bot.chatbot.chzzk.Connector.getChannel
 import space.mori.chzzk_bot.chatbot.discord.Discord
+import space.mori.chzzk_bot.chatbot.utils.refreshAccessToken
 import space.mori.chzzk_bot.common.events.*
 import space.mori.chzzk_bot.common.models.User
 import space.mori.chzzk_bot.common.services.LiveStatusService
 import space.mori.chzzk_bot.common.services.TimerConfigService
 import space.mori.chzzk_bot.common.services.UserService
 import space.mori.chzzk_bot.common.utils.*
-import xyz.r2turntrue.chzzk4j.chat.ChatEventListener
-import xyz.r2turntrue.chzzk4j.chat.ChatMessage
-import xyz.r2turntrue.chzzk4j.chat.ChzzkChat
+import xyz.r2turntrue.chzzk4j.ChzzkClient
+import xyz.r2turntrue.chzzk4j.auth.ChzzkSimpleUserLoginAdapter
+import xyz.r2turntrue.chzzk4j.session.ChzzkSessionBuilder
+import xyz.r2turntrue.chzzk4j.session.ChzzkSessionSubscriptionType
+import xyz.r2turntrue.chzzk4j.session.ChzzkUserSession
+import xyz.r2turntrue.chzzk4j.session.event.SessionChatMessageEvent
 import xyz.r2turntrue.chzzk4j.types.channel.ChzzkChannel
 import java.lang.Exception
 import java.net.SocketTimeoutException
@@ -37,18 +43,17 @@ object ChzzkHandler {
     }
 
     fun enable() {
-        botUid = chzzk.loggedUser.userId
         UserService.getAllUsers().map {
             if(!it.isDisabled)
                 try {
-                    chzzk.getChannel(it.token)?.let { token -> addUser(token, it) }
+                    Connector.getChannel(it.token)?.let { token -> addUser(token, it) }
                 } catch(e: Exception) {
                     logger.info("Exception: ${it.token}(${it.username}) not found. ${e.stackTraceToString()}")
                 }
         }
 
         handlers.forEach { handler ->
-            val streamInfo = getStreamInfo(handler.listener.channelId)
+            val streamInfo = getStreamInfo(handler.channel.channelId)
             if (streamInfo.content?.status == "OPEN") handler.isActive(true, streamInfo)
         }
 
@@ -199,7 +204,8 @@ class UserHandler(
     var streamStartTime: LocalDateTime?,
 ) {
     var messageHandler: MessageHandler
-    var listener: ChzzkChat
+    lateinit var client: ChzzkClient
+    lateinit var listener: ChzzkUserSession
 
     private val dispatcher: CoroutinesEventBus by inject(CoroutinesEventBus::class.java)
     private var _isActive: Boolean
@@ -209,35 +215,30 @@ class UserHandler(
         }
 
     init {
-        listener = chzzk.chat(channel.channelId)
-            .withAutoReconnect(true)
-            .withChatListener(object : ChatEventListener {
-                override fun onConnect(chat: ChzzkChat, isReconnecting: Boolean) {
-                    logger.info("${channel.channelName} - ${channel.channelId} / reconnected: $isReconnecting")
+        val user = UserService.getUser(channel.channelId)
+
+        if(user?.accessToken == null || user.refreshToken == null) {
+            throw RuntimeException("AccessToken or RefreshToken is not valid.")
         }
 
-                override fun onError(ex: Exception) {
-                    logger.info("ChzzkChat error. ${channel.channelName} - ${channel.channelId}")
-                    logger.info(ex.stackTraceToString())
-                }
+        val tokens = ChzzkClient.refreshAccessToken(user.refreshToken!!)
 
-                override fun onChat(msg: ChatMessage) {
-                    if(!_isActive) return
-                    messageHandler.handle(msg, user)
-                }
+        client = Connector.getClient(tokens.first, tokens.second)
+        listener = ChzzkSessionBuilder(client).buildUserSession()
 
-                override fun onConnectionClosed(code: Int, reason: String?, remote: Boolean, tryingToReconnect: Boolean) {
-                    logger.info("ChzzkChat closed. ${channel.channelName} - ${channel.channelId}")
-                    logger.info("Reason: $reason / $tryingToReconnect")
+        UserService.setTokens(user, tokens.first, tokens.second)
+
+        listener.createAndConnectAsync().join()
+
+        listener.on(SessionChatMessageEvent::class.java) {
+            messageHandler.handle(it.message, user)
         }
-            })
-            .build()
         messageHandler = MessageHandler(this@UserHandler)
     }
 
-
     internal fun disable() {
-        listener.closeAsync()
+        listener.disconnectAsync().join()
+        _isActive = false
     }
 
     internal fun reloadCommand() {
@@ -259,7 +260,7 @@ class UserHandler(
                 reloadUser(UserService.getUser(user.id.value)!!)
 
                 logger.info("ChzzkChat connecting... ${channel.channelName} - ${channel.channelId}")
-                listener.connectAsync().await()
+                listener.subscribeAsync(ChzzkSessionSubscriptionType.CHAT)
 
                 streamStartTime = status.content?.openDate?.let { convertChzzkDateToLocalDateTime(it) }
 
@@ -285,7 +286,7 @@ class UserHandler(
                     delay(5000L)
                     try {
                         if(!user.isDisableStartupMsg)
-                            listener.sendChat("${user.username} 님! 오늘도 열심히 방송하세요!")
+                            sendChat("${user.username} 님! 오늘도 열심히 방송하세요!")
                         Discord.sendDiscord(user, status)
                     } catch(e: Exception) {
                         logger.info("Stream on logic has some error: ${e.stackTraceToString()}")
@@ -295,7 +296,7 @@ class UserHandler(
         } else {
             logger.info("${user.username} is offline.")
             streamStartTime = null
-            listener.closeAsync()
+            listener.disconnectAsync().join()
             _isActive = false
 
             CoroutineScope(Dispatchers.Default).launch {
@@ -319,4 +320,8 @@ class UserHandler(
             }
         }
     }
+
+    internal fun sendChat(msg: String) {
+        client.sendChatToLoggedInChannel(msg)
+    }
 }

chatbot/src/main/kotlin/space/mori/chzzk_bot/chatbot/chzzk/Connector.kt

@@ -2,8 +2,10 @@ package space.mori.chzzk_bot.chatbot.chzzk
 
 import io.github.cdimascio.dotenv.dotenv
 import org.slf4j.LoggerFactory
-import xyz.r2turntrue.chzzk4j.Chzzk
-import xyz.r2turntrue.chzzk4j.ChzzkBuilder
+import xyz.r2turntrue.chzzk4j.ChzzkClient
+import xyz.r2turntrue.chzzk4j.ChzzkClientBuilder
+import xyz.r2turntrue.chzzk4j.auth.ChzzkOauthLoginAdapter
+import xyz.r2turntrue.chzzk4j.auth.ChzzkSimpleUserLoginAdapter
 import xyz.r2turntrue.chzzk4j.types.channel.ChzzkChannel
 
 val dotenv = dotenv {
@@ -11,14 +13,24 @@ val dotenv = dotenv {
 }
 
 object Connector {
-    val chzzk: Chzzk = ChzzkBuilder()
-        .withAuthorization(dotenv["NID_AUT"], dotenv["NID_SES"])
+    val client: ChzzkClient = ChzzkClientBuilder(dotenv["NAVER_CLIENT_ID"], dotenv["NAVER_CLIENT_SECRET"])
         .build()
     private val logger = LoggerFactory.getLogger(this::class.java)
 
-    fun getChannel(channelId: String): ChzzkChannel? = chzzk.getChannel(channelId)
+    fun getChannel(channelId: String): ChzzkChannel? = client.fetchChannel(channelId)
 
     init {
-        logger.info("chzzk logged: ${chzzk.isLoggedIn} / ${chzzk.loggedUser?.nickname ?: "----"}")
+        logger.info("chzzk logged: ${client.isLoggedIn}")
+
+        client.loginAsync().join()
+    }
+
+    fun getClient(accessToken: String, refreshToken: String): ChzzkClient {
+        val adapter = ChzzkSimpleUserLoginAdapter(accessToken, refreshToken)
+        val client = ChzzkClientBuilder(dotenv["NAVER_CLIENT_ID"], dotenv["NAVER_CLIENT_SECRET"])
+            .withLoginAdapter(adapter)
+            .build()
+
+        return client
     }
 }

chatbot/src/main/kotlin/space/mori/chzzk_bot/chatbot/chzzk/MessageHandler.kt

@@ -13,15 +13,16 @@ import space.mori.chzzk_bot.common.utils.getUptime
 import space.mori.chzzk_bot.common.utils.getYoutubeVideo
 import xyz.r2turntrue.chzzk4j.chat.ChatMessage
 import xyz.r2turntrue.chzzk4j.chat.ChzzkChat
+import xyz.r2turntrue.chzzk4j.session.ChzzkUserSession
+import xyz.r2turntrue.chzzk4j.session.message.SessionChatMessage
 import java.time.LocalDateTime
 import java.time.format.DateTimeFormatter
 import java.time.temporal.ChronoUnit
 
-
 class MessageHandler(
     private val handler: UserHandler
 ) {
-    private val commands = mutableMapOf<String, (msg: ChatMessage, user: User) -> Unit>()
+    private val commands = mutableMapOf<String, (msg: SessionChatMessage, user: User) -> Unit>()
 
     private val counterPattern = Regex("<counter:([^>]+)>")
     private val personalCounterPattern = Regex("<counter_personal:([^>]+)>")
@@ -71,85 +72,90 @@ class MessageHandler(
             this.commands.put(it.command.lowercase()) { msg, user ->
                 logger.debug("${channel.channelName} - ${it.command} - ${it.content}/${it.failContent}")
 
-                val result = replaceCounters(Pair(it.content, it.failContent), user, msg, listener, msg.profile?.nickname ?: "")
-                listener.sendChat(result)
+                val result = replaceCounters(
+                    Pair(it.content, it.failContent),
+                    user,
+                    msg,
+                    msg.profile?.nickname ?: ""
+                )
+                handler.sendChat(result)
             }
         }
     }
 
-    private fun commandListCommand(msg: ChatMessage, user: User) {
-        listener.sendChat("리스트는 여기입니다. https://nabot.mori.space/commands/${user.token}")
+    private fun commandListCommand(msg: SessionChatMessage, user: User) {
+        handler.sendChat("리스트는 여기입니다. https://nabot.mori.space/commands/${user.token}")
     }
 
-    private fun manageAddCommand(msg: ChatMessage, user: User) {
-        if (msg.profile?.userRoleCode == "common_user") {
-            listener.sendChat("매니저만 명령어를 추가할 수 있습니다.")
+    private fun manageAddCommand(msg: SessionChatMessage, user: User) {
+        if (msg.profile.badges.size == 0) {
+            handler.sendChat("매니저만 명령어를 추가할 수 있습니다.")
             return
         }
 
         val parts = msg.content.split(" ", limit = 3)
         if (parts.size < 3) {
-            listener.sendChat("명령어 추가 형식은 '!명령어추가 명령어 내용'입니다.")
+            handler.sendChat("명령어 추가 형식은 '!명령어추가 명령어 내용'입니다.")
             return
         }
         if (commands.containsKey(parts[1])) {
-            listener.sendChat("${parts[1]} 명령어는 이미 있는 명령어입니다.")
+            handler.sendChat("${parts[1]} 명령어는 이미 있는 명령어입니다.")
             return
         }
         val command = parts[1]
         val content = parts[2]
         CommandService.saveCommand(user, command, content, "")
-        listener.sendChat("명령어 '$command' 추가되었습니다.")
+        handler.sendChat("명령어 '$command' 추가되었습니다.")
     }
 
-    private fun manageUpdateCommand(msg: ChatMessage, user: User) {
-        if (msg.profile?.userRoleCode == "common_user") {
-            listener.sendChat("매니저만 명령어를 추가할 수 있습니다.")
+    private fun manageUpdateCommand(msg: SessionChatMessage, user: User) {
+        if (msg.profile.badges.size == 0) {
+            handler.sendChat("매니저만 명령어를 추가할 수 있습니다.")
             return
         }
 
         val parts = msg.content.split(" ", limit = 3)
         if (parts.size < 3) {
-            listener.sendChat("명령어 수정 형식은 '!명령어수정 명령어 내용'입니다.")
+            handler.sendChat("명령어 수정 형식은 '!명령어수정 명령어 내용'입니다.")
             return
         }
         if (!commands.containsKey(parts[1])) {
-            listener.sendChat("${parts[1]} 명령어는 없는 명령어입니다.")
+            handler.sendChat("${parts[1]} 명령어는 없는 명령어입니다.")
             return
         }
         val command = parts[1]
         val content = parts[2]
         CommandService.updateCommand(user, command, content, "")
-        listener.sendChat("명령어 '$command' 수정되었습니다.")
+        handler.sendChat("명령어 '$command' 수정되었습니다.")
         ChzzkHandler.reloadCommand(channel)
     }
 
-    private fun manageRemoveCommand(msg: ChatMessage, user: User) {
-        if (msg.profile?.userRoleCode == "common_user") {
-            listener.sendChat("매니저만 명령어를 삭제할 수 있습니다.")
+    private fun manageRemoveCommand(msg: SessionChatMessage, user: User) {
+        if (msg.profile.badges.size == 0) {
+            handler.sendChat("매니저만 명령어를 삭제할 수 있습니다.")
             return
         }
 
         val parts = msg.content.split(" ", limit = 2)
         if (parts.size < 2) {
-            listener.sendChat("명령어 삭제 형식은 '!명령어삭제 명령어'입니다.")
+            handler.sendChat("명령어 삭제 형식은 '!명령어삭제 명령어'입니다.")
             return
         }
         val command = parts[1]
         CommandService.removeCommand(user, command)
-        listener.sendChat("명령어 '$command' 삭제되었습니다.")
+        handler.sendChat("명령어 '$command' 삭제되었습니다.")
         ChzzkHandler.reloadCommand(channel)
     }
 
-    private fun timerCommand(msg: ChatMessage, user: User) {
-        if (msg.profile?.userRoleCode == "common_user") {
-            listener.sendChat("매니저만 이 명령어를 사용할 수 있습니다.")
+    private fun timerCommand(msg: SessionChatMessage, user: User) {
+        if (msg.profile.badges.size == 0) {
+            handler.sendChat("매니저만 이 명령어를 사용할 수 있습니다.")
             return
         }
 
         val parts = msg.content.split(" ", limit = 3)
         if (parts.size < 2) {
-            listener.sendChat("타이머 명령어 형식을 잘 찾아봐주세요!")
+            handler.sendChat("타이머 명령어 형식을 잘 찾아봐주세요!")
             return
         }
 
@@ -178,13 +184,13 @@ class MessageHandler(
                 when (parts[2]) {
                     "업타임" -> {
                         TimerConfigService.saveOrUpdateConfig(user, TimerType.UPTIME)
-                        listener.sendChat("기본 타이머 설정이 업타임으로 바뀌었습니다.")
+                        handler.sendChat("기본 타이머 설정이 업타임으로 바뀌었습니다.")
                     }
                     "삭제" -> {
                         TimerConfigService.saveOrUpdateConfig(user, TimerType.REMOVE)
-                        listener.sendChat("기본 타이머 설정이 삭제로 바뀌었습니다.")
+                        handler.sendChat("기본 타이머 설정이 삭제로 바뀌었습니다.")
                     }
-                    else -> listener.sendChat("!타이머 설정 (업타임/삭제) 형식으로 써주세요!")
+                    else -> handler.sendChat("!타이머 설정 (업타임/삭제) 형식으로 써주세요!")
                 }
             }
             else -> {
@@ -198,9 +204,9 @@ class MessageHandler(
                         dispatcher.post(TimerEvent(user.token, TimerType.TIMER, timestamp.toString()))
                     }
                 } catch (e: NumberFormatException) {
-                    listener.sendChat("!타이머/숫자 형식으로 적어주세요! 단위: 분")
+                    handler.sendChat("!타이머/숫자 형식으로 적어주세요! 단위: 분")
                 } catch (e: Exception) {
-                    listener.sendChat("타이머 설정 중 오류가 발생했습니다.")
+                    handler.sendChat("타이머 설정 중 오류가 발생했습니다.")
                     logger.error("Error processing timer command: ${e.message}", e)
                 }
             }
@@ -208,21 +214,21 @@ class MessageHandler(
     }
 
     // songs
-    private fun songAddCommand(msg: ChatMessage, user: User) {
+    private fun songAddCommand(msg: SessionChatMessage, user: User) {
         if(SongConfigService.getConfig(user).disabled) {
             return
         }
 
         val parts = msg.content.split(" ", limit = 2)
         if (parts.size < 2) {
-            listener.sendChat("유튜브 URL을 입력해주세요!")
+            handler.sendChat("유튜브 URL을 입력해주세요!")
             return
         }
 
         val config = SongConfigService.getConfig(user)
 
-        if(config.streamerOnly && msg.profile?.userRoleCode == "common_user") {
-            listener.sendChat("매니저만 이 명령어를 사용할 수 있습니다.")
+        if(config.streamerOnly && msg.profile.badges.size == 0) {
+            handler.sendChat("매니저만 이 명령어를 사용할 수 있습니다.")
             return
         }
 
@@ -230,34 +236,34 @@ class MessageHandler(
         val songs = SongListService.getSong(user)
 
         if(songs.size >= config.queueLimit) {
-            listener.sendChat("더이상 노래를 신청할 수 없습니다. 잠시 뒤 다시 시도해주세요!")
+            handler.sendChat("더이상 노래를 신청할 수 없습니다. 잠시 뒤 다시 시도해주세요!")
             return
         }
-        if(songs.filter { it.uid == msg.userId }.size  >= config.personalLimit) {
-            listener.sendChat("더이상 노래를 신청할 수 없습니다. 잠시 뒤 다시 시도해주세요!")
+        if(songs.filter { it.uid == msg.senderChannelId }.size  >= config.personalLimit) {
+            handler.sendChat("더이상 노래를 신청할 수 없습니다. 잠시 뒤 다시 시도해주세요!")
             return
         }
 
         try {
             val video = getYoutubeVideo(url)
             if (video == null) {
-                listener.sendChat("유튜브에서 찾을 수 없어요!")
+                handler.sendChat("유튜브에서 찾을 수 없어요!")
                 return
             }
 
             if (songs.any { it.url == video.url }) {
-                listener.sendChat("같은 노래가 이미 신청되어 있습니다.")
+                handler.sendChat("같은 노래가 이미 신청되어 있습니다.")
                 return
             }
 
             if (video.length > 600) {
-                listener.sendChat("10분이 넘는 노래는 신청할 수 없습니다.")
+                handler.sendChat("10분이 넘는 노래는 신청할 수 없습니다.")
                 return
             }
 
             SongListService.saveSong(
                 user,
-                msg.userId,
+                msg.senderChannelId,
                 video.url,
                 video.name,
                 video.author,
@@ -269,31 +275,31 @@ class MessageHandler(
                     SongEvent(
                         user.token,
                         SongType.ADD,
-                        msg.userId,
+                        msg.senderChannelId,
                         null,
                         video,
                     )
                 )
             }
 
-            listener.sendChat("노래가 추가되었습니다. ${video.name} - ${video.author}")
+            handler.sendChat("노래가 추가되었습니다. ${video.name} - ${video.author}")
         } catch(e: Exception) {
-            listener.sendChat("유튜브 영상 주소로 다시 신청해주세요!")
+            handler.sendChat("유튜브 영상 주소로 다시 신청해주세요!")
             logger.info(e.stackTraceToString())
         }
     }
 
-    private fun songListCommand(msg: ChatMessage, user: User) {
+    private fun songListCommand(msg: SessionChatMessage, user: User) {
         if(SongConfigService.getConfig(user).disabled) {
             return
         }
         
-        listener.sendChat("리스트는 여기입니다. https://nabot.mori.space/songs/${user.token}")
+        handler.sendChat("리스트는 여기입니다. https://nabot.mori.space/songs/${user.token}")
     }
 
-    private fun songStartCommand(msg: ChatMessage, user: User) {
-        if (msg.profile?.userRoleCode == "common_user") {
-            listener.sendChat("매니저만 이 명령어를 사용할 수 있습니다.")
+    private fun songStartCommand(msg: SessionChatMessage, user: User) {
+        if (msg.profile?.badges?.size == 0) {
+            handler.sendChat("매니저만 이 명령어를 사용할 수 있습니다.")
             return
         }
 
@@ -306,28 +312,28 @@ class MessageHandler(
                 }
             }
         } else {
-            listener.sendChat("나봇 홈페이지의 노래목록 페이지를 이용해주세요! 디스코드 연동을 하시면 DM으로 바로 전송됩니다.")
+            handler.sendChat("나봇 홈페이지의 노래목록 페이지를 이용해주세요! 디스코드 연동을 하시면 DM으로 바로 전송됩니다.")
         }
     }
 
-    internal fun handle(msg: ChatMessage, user: User) {
-        if(msg.userId == ChzzkHandler.botUid) return
+    internal fun handle(msg: SessionChatMessage, user: User) {
+        if(msg.senderChannelId == ChzzkHandler.botUid) return
 
         val commandKey = msg.content.split(' ')[0]
         commands[commandKey.lowercase()]?.let { it(msg, user) }
     }
 
-    private fun replaceCounters(chat: Pair<String, String>, user: User, msg: ChatMessage, listener: ChzzkChat, userName: String): String {
+    private fun replaceCounters(chat: Pair<String, String>, user: User, msg: SessionChatMessage, userName: String): String {
         var result = chat.first
         var isFail = false
 
         // Replace dailyCounterPattern
         result = dailyCounterPattern.replace(result) { matchResult ->
             val name = matchResult.groupValues[1]
-            val dailyCounter = CounterService.getDailyCounterValue(name, msg.userId, user)
+            val dailyCounter = CounterService.getDailyCounterValue(name, msg.senderChannelId, user)
 
             if (dailyCounter.second) {
-                CounterService.updateDailyCounterValue(name, msg.userId, 1, user).first.toString()
+                CounterService.updateDailyCounterValue(name, msg.senderChannelId, 1, user).first.toString()
             } else {
                 isFail = true
                 dailyCounter.first.toString()
@@ -339,7 +345,7 @@ class MessageHandler(
             result = chat.second
             result = dailyCounterPattern.replace(result) { matchResult ->
                 val name = matchResult.groupValues[1]
-                val dailyCounter = CounterService.getDailyCounterValue(name, msg.userId, user)
+                val dailyCounter = CounterService.getDailyCounterValue(name, msg.senderChannelId, user)
                 dailyCounter.first.toString()
             }
         }
@@ -347,7 +353,7 @@ class MessageHandler(
         // Replace followPattern
         result = followPattern.replace(result) { _ ->
             try {
-                val followingDate = getFollowDate(listener.chatId, msg.userId)
+                val followingDate = getFollowDate(channel.channelId, msg.senderChannelId)
                     .content?.streamingProperty?.following?.followDate
 
                 val period = followingDate?.let {
@@ -383,7 +389,7 @@ class MessageHandler(
         // Replace personalCounterPattern
         result = personalCounterPattern.replace(result) { matchResult ->
             val name = matchResult.groupValues[1]
-            CounterService.updatePersonalCounterValue(name, msg.userId, 1, user).toString()
+            CounterService.updatePersonalCounterValue(name, msg.senderChannelId, 1, user).toString()
         }
 
         // Replace namePattern
@@ -391,5 +397,4 @@ class MessageHandler(
 
         return result
     }
-
 }

chatbot/src/main/kotlin/space/mori/chzzk_bot/chatbot/utils/accessTokenRefresh.kt

@@ -0,0 +1,55 @@
+package space.mori.chzzk_bot.chatbot.utils
+
+import com.google.gson.Gson
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import okhttp3.RequestBody.Companion.toRequestBody
+import space.mori.chzzk_bot.common.utils.client
+import xyz.r2turntrue.chzzk4j.ChzzkClient
+import java.io.IOException
+
+val client = OkHttpClient.Builder()
+    .addNetworkInterceptor { chain ->
+        chain.proceed(
+            chain.request()
+                .newBuilder()
+                .header("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36")
+                .build()
+        )
+    }
+    .build()
+val gson = Gson()
+
+data class RefreshTokenResponse(
+    val accessToken: String,
+    val refreshToken: String,
+    val expiresIn: Int,
+    val tokenType: String = "Bearer",
+    val scope: String
+)
+
+fun ChzzkClient.refreshAccessToken(refreshToken: String): Pair<String, String> {
+    val url = "https://openapi.chzzk.naver.com/auth/v1/token"
+    val request = Request.Builder()
+        .url(url)
+        .header("Content-Type", "application/json")
+        .post(gson.toJson(mapOf(
+            "grantType" to "refresh_token",
+            "refreshToken" to refreshToken,
+            "clientId" to this.apiClientId,
+            "clientSecret" to this.apiSecret
+        )).toRequestBody())
+        .build()
+
+    client.newCall(request).execute().use { response ->
+        try {
+            if(!response.isSuccessful) throw IOException("Unexpected code ${response.code}")
+            val body = response.body?.string()
+            val data = gson.fromJson(body, RefreshTokenResponse::class.java)
+
+            return Pair(data.accessToken, data.refreshToken)
+        } catch(e: Exception) {
+            throw e
+        }
+    }
+}

common/build.gradle.kts

@@ -23,7 +23,7 @@ dependencies {
     api("com.zaxxer:HikariCP:6.1.0")
 
     // https://mvnrepository.com/artifact/ch.qos.logback/logback-classic
-    implementation("ch.qos.logback:logback-classic:1.5.12")
+    implementation("ch.qos.logback:logback-classic:1.5.13")
 
     // https://mvnrepository.com/artifact/org.mariadb.jdbc/mariadb-java-client
     implementation("org.mariadb.jdbc:mariadb-java-client:3.5.0")

common/src/main/kotlin/space/mori/chzzk_bot/common/events/TimerEvents.kt

@@ -5,7 +5,8 @@ enum class TimerType(var value: Int) {
     TIMER(1),
     REMOVE(2),
 
-    STREAM_OFF(50)
+    STREAM_OFF(50),
+    ACK(51)
 }
 
 class TimerEvent(

common/src/main/kotlin/space/mori/chzzk_bot/common/models/User.kt

@@ -15,6 +15,8 @@ object Users: IntIdTable("users") {
     val liveAlertMessage = text("live_alert_message").nullable()
     val isDisableStartupMsg = bool("is_disable_startup_msg").default(false)
     val isDisabled = bool("is_disabled").default(false)
+    val accessToken = varchar("access_token", 255).nullable()
+    val refreshToken = varchar("refresh_token", 255).nullable()
 }
 
 class User(id: EntityID<Int>) : IntEntity(id) {
@@ -29,6 +31,9 @@ class User(id: EntityID<Int>) : IntEntity(id) {
     var isDisableStartupMsg by Users.isDisableStartupMsg
     var isDisabled by Users.isDisabled
 
+    var accessToken by Users.accessToken
+    var refreshToken by Users.refreshToken
+
     // 유저가 가진 매니저들
     var managers by User.via(UserManagers.user, UserManagers.manager)
 

common/src/main/kotlin/space/mori/chzzk_bot/common/services/UserService.kt

@@ -97,4 +97,19 @@ object UserService {
             user
         }
     }
+
+    fun setAccessToken(user: User, accessToken: String): User {
+        return transaction {
+            user.accessToken = accessToken
+            user
+        }
+    }
+
+    fun setRefreshToken(user: User, accessToken: String, refreshToken: String): User {
+        return transaction {
+            user.accessToken = accessToken
+            user.refreshToken = refreshToken
+            user
+        }
+    }
 }

webserver/build.gradle.kts

@@ -10,7 +10,7 @@ repositories {
     mavenCentral()
 }
 
-val ktorVersion = "3.0.1"
+val ktorVersion = "3.1.3"
 
 dependencies {
     implementation("io.ktor:ktor-server-core:$ktorVersion")

webserver/src/main/kotlin/space/mori/chzzk_bot/webserver/Main.kt

@@ -25,7 +25,6 @@ import kotlinx.serialization.json.Json
 import space.mori.chzzk_bot.common.services.UserService
 import space.mori.chzzk_bot.webserver.routes.*
 import space.mori.chzzk_bot.webserver.utils.DiscordRatelimits
-import wsSongListRoutes
 import java.math.BigInteger
 import java.security.SecureRandom
 import java.time.Duration
@@ -192,6 +191,7 @@ val server = embeddedServer(Netty, port = 8080, ) {
                     val userInfo = getChzzkUser(tokenResponse.content.accessToken)
 
                     if(userInfo.content != null) {
+                        val user = UserService.getUser(userInfo.content.channelId)
                         call.sessions.set(
                             UserSession(
                                 session.state,
@@ -199,6 +199,7 @@ val server = embeddedServer(Netty, port = 8080, ) {
                                 listOf()
                             )
                         )
+                        user?.let { UserService.setRefreshToken(it, tokenResponse.content.accessToken, tokenResponse.content.refreshToken ?: "") }
                         call.respondRedirect(getFrontendURL(""))
                     }
                 } catch (e: Exception) {

webserver/src/main/kotlin/space/mori/chzzk_bot/webserver/routes/WSSongListRoutes.kt

@@ -1,115 +1,54 @@
+package space.mori.chzzk_bot.webserver.routes
+
+import io.ktor.client.plugins.websocket.WebSocketException
+import io.ktor.server.application.*
 import io.ktor.server.routing.*
 import io.ktor.server.sessions.*
 import io.ktor.server.websocket.*
-import io.ktor.util.logging.Logger
 import io.ktor.websocket.*
-import io.ktor.websocket.Frame.*
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.*
 import kotlinx.coroutines.channels.ClosedReceiveChannelException
-import kotlinx.coroutines.delay
-import kotlinx.coroutines.launch
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.json.Json
 import org.koin.java.KoinJavaComponent.inject
+import org.slf4j.Logger
 import org.slf4j.LoggerFactory
 import space.mori.chzzk_bot.common.events.*
 import space.mori.chzzk_bot.common.models.SongList
-import space.mori.chzzk_bot.common.models.SongLists.uid
 import space.mori.chzzk_bot.common.models.User
-import space.mori.chzzk_bot.common.services.SongConfigService
 import space.mori.chzzk_bot.common.services.SongListService
 import space.mori.chzzk_bot.common.services.UserService
 import space.mori.chzzk_bot.common.utils.YoutubeVideo
 import space.mori.chzzk_bot.common.utils.getYoutubeVideo
 import space.mori.chzzk_bot.webserver.UserSession
-import space.mori.chzzk_bot.webserver.routes.SongResponse
-import space.mori.chzzk_bot.webserver.routes.toSerializable
 import space.mori.chzzk_bot.webserver.utils.CurrentSong
+import java.io.IOException
 import java.util.concurrent.ConcurrentHashMap
 
 fun Routing.wsSongListRoutes() {
-    val sessions = ConcurrentHashMap<String, WebSocketServerSession>()
-    val status = ConcurrentHashMap<String, SongType>()
     val logger = LoggerFactory.getLogger("WSSongListRoutes")
-
     val dispatcher: CoroutinesEventBus by inject(CoroutinesEventBus::class.java)
+    val songListScope = CoroutineScope(SupervisorJob() + Dispatchers.Default)
 
-    fun addSession(uid: String, session: WebSocketServerSession) {
-        if (sessions[uid] != null) {
-            CoroutineScope(Dispatchers.Default).launch {
-                sessions[uid]?.close(
-                    CloseReason(CloseReason.Codes.VIOLATED_POLICY, "Duplicated sessions.")
-                )
-            }
-        }
-        sessions[uid] = session
-    }
+    // Manage all active sessions
+    val sessionHandlers = ConcurrentHashMap<String, SessionHandler>()
 
-    fun removeSession(uid: String) {
-        sessions.remove(uid)
+    // Handle application shutdown
+    environment.monitor.subscribe(ApplicationStopped) {
+        sessionHandlers.values.forEach {
+            songListScope.launch {
+                it.close(CloseReason(CloseReason.Codes.NORMAL, "Server shutting down"))
             }
-
-    suspend fun waitForAck(ws: WebSocketServerSession, expectedType: Int): Boolean {
-        val timeout = 5000L // 5 seconds timeout
-        val startTime = System.currentTimeMillis()
-        while (System.currentTimeMillis() - startTime < timeout) {
-            for (frame in ws.incoming) {
-                if (frame is Text) {
-                    val message = frame.readText()
-                    if(message == "ping") {
-                        return true
-                    }
-                    val data = Json.decodeFromString<SongRequest>(message)
-                    if (data.type == SongType.ACK.value) {
-                        return true // ACK received
-                    }
-                }
-            }
-            delay(100) // Check every 100 ms
-        }
-        return false // Timeout
-    }
-
-    suspend fun sendWithRetry(uid: String, res: SongResponse, maxRetries: Int = 5, delayMillis: Long = 3000L) {
-        var attempt = 0
-        var sentSuccessfully = false
-
-        while (attempt < maxRetries && !sentSuccessfully) {
-            val ws = sessions[uid]
-            try {
-                if(ws == null) {
-                    delay(delayMillis)
-                    continue
-                }
-                // Attempt to send the message
-                ws.sendSerialized(res)
-                logger.debug("Message sent successfully to $uid on attempt $attempt")
-                // Wait for ACK
-                val ackReceived = waitForAck(ws, res.type)
-                if (ackReceived == true) {
-                    sentSuccessfully = true
-                } else {
-                    logger.warn("ACK not received for message to $uid on attempt $attempt.")
-                }
-            } catch (e: Exception) {
-                attempt++
-                logger.warn("Failed to send message to $uid on attempt $attempt. Retrying in $delayMillis ms.")
-                logger.warn(e.stackTraceToString())
-            } finally {
-                // Wait before retrying
-                delay(delayMillis)
-            }
-        }
-
-        if (!sentSuccessfully) {
-            logger.error("Failed to send message to $uid after $maxRetries attempts.")
         }
     }
 
+    // WebSocket endpoint
     webSocket("/songlist") {
         val session = call.sessions.get<UserSession>()
-        val user = session?.id?.let { UserService.getUser(it) }
+        val user: User? = session?.id?.let { UserService.getUser(it) }
+
         if (user == null) {
             close(CloseReason(CloseReason.Codes.CANNOT_ACCEPT, "Invalid SID"))
             return@webSocket
@@ -117,102 +56,204 @@ fun Routing.wsSongListRoutes() {
 
         val uid = user.token
 
-        addSession(uid, this)
+        // Ensure only one session per user
+        sessionHandlers[uid]?.close(CloseReason(CloseReason.Codes.VIOLATED_POLICY, "Another session is already active."))
 
-        if (status[uid] == SongType.STREAM_OFF) {
-            CoroutineScope(Dispatchers.Default).launch {
-                sendSerialized(SongResponse(
-                    SongType.STREAM_OFF.value,
-                    uid,
-                    null,
-                    null,
-                    null,
-                ))
-            }
-            removeSession(uid)
-        }
+        val handler = SessionHandler(uid, this, dispatcher, logger)
+        sessionHandlers[uid] = handler
 
+        // Initialize session
+        handler.initialize()
+
+        // Listen for incoming frames
         try {
             for (frame in incoming) {
                 when (frame) {
-                    is Text -> {
-                        if (frame.readText().trim() == "ping") {
-                            send("pong")
-                        } else {
-                            val data = frame.readText().let { Json.decodeFromString<SongRequest>(it) }
-
-                            // Handle song requests
-                            handleSongRequest(data, user, dispatcher, logger)
-                        }
-                    }
-                    is Ping -> send(Pong(frame.data))
-                    else -> ""
+                    is Frame.Text -> handler.handleTextFrame(frame.readText())
+                    is Frame.Ping -> send(Frame.Pong(frame.data))
+                    else -> Unit
                 }
             }
         } catch (e: ClosedReceiveChannelException) {
-            logger.error("Error in WebSocket: ${e.message}")
+            logger.info("Session closed: ${e.message}")
+        } catch (e: IOException) {
+            logger.error("IO error: ${e.message}")
+        } catch (e: Exception) {
+            logger.error("Unexpected error: ${e.message}")
         } finally {
-            removeSession(uid)
+            sessionHandlers.remove(uid)
+            handler.close(CloseReason(CloseReason.Codes.NORMAL, "Session ended"))
         }
     }
 
-    dispatcher.subscribe(SongEvent::class) {
-        logger.debug("SongEvent: {} / {} {}", it.uid, it.type, it.current?.name)
-        CoroutineScope(Dispatchers.Default).launch {
-            val user = UserService.getUser(it.uid)
-            if (user != null) {
-                sendWithRetry(
-                    user.token, SongResponse(
-                        it.type.value,
-                        it.uid,
-                        it.reqUid,
-                        it.current?.toSerializable(),
-                        it.next?.toSerializable(),
-                        it.delUrl
-                    )
-                )
-            }
+    // Subscribe to SongEvents
+    dispatcher.subscribe(SongEvent::class) { event ->
+        val handler = sessionHandlers[event.uid]
+        songListScope.launch {
+            handler?.sendSongResponse(event)
         }
     }
 
-    dispatcher.subscribe(TimerEvent::class) {
-        if (it.type == TimerType.STREAM_OFF) {
-            CoroutineScope(Dispatchers.Default).launch {
-                val user = UserService.getUser(it.uid)
-                if (user != null) {
-                    sendWithRetry(
-                        user.token, SongResponse(
-                            it.type.value,
-                            it.uid,
-                            null,
-                            null,
-                            null,
-                        )
-                    )
-                }
+    // Subscribe to TimerEvents
+    dispatcher.subscribe(TimerEvent::class) { event ->
+        if (event.type == TimerType.STREAM_OFF) {
+            val handler = sessionHandlers[event.uid]
+            songListScope.launch {
+                handler?.sendTimerOff()
             }
         }
     }
 }
 
-suspend fun handleSongRequest(
+class SessionHandler(
+    private val uid: String,
+    private val session: WebSocketServerSession,
+    private val dispatcher: CoroutinesEventBus,
+    private val logger: Logger
+) {
+    private val ackMap = ConcurrentHashMap<String, CompletableDeferred<Boolean>>()
+    private val sessionMutex = Mutex()
+    private val scope = CoroutineScope(SupervisorJob() + Dispatchers.Default)
+
+    suspend fun initialize() {
+        // Send initial status if needed,
+        // For example, send STREAM_OFF if applicable
+        // This can be extended based on your requirements
+    }
+
+    suspend fun handleTextFrame(text: String) {
+        if (text.trim() == "ping") {
+            session.send("pong")
+            return
+        }
+
+        val data = try {
+            Json.decodeFromString<SongRequest>(text)
+        } catch (e: Exception) {
+            logger.warn("Failed to decode SongRequest: ${e.message}")
+            return
+        }
+
+        when (data.type) {
+            SongType.ACK.value -> handleAck(data.uid)
+            else -> handleSongRequest(data)
+        }
+    }
+
+    private fun handleAck(requestUid: String) {
+        ackMap[requestUid]?.complete(true)
+        ackMap.remove(requestUid)
+    }
+
+    private fun handleSongRequest(data: SongRequest) {
+        scope.launch {
+            SongRequestProcessor.process(data, uid, dispatcher, this@SessionHandler, logger)
+        }
+    }
+
+    suspend fun sendSongResponse(event: SongEvent) {
+        val response = SongResponse(
+            type = event.type.value,
+            uid = event.uid,
+            reqUid = event.reqUid,
+            current = event.current?.toSerializable(),
+            next = event.next?.toSerializable(),
+            delUrl = event.delUrl
+        )
+        sendWithRetry(response)
+    }
+
+    suspend fun sendTimerOff() {
+        val response = SongResponse(
+            type = TimerType.STREAM_OFF.value,
+            uid = uid,
+            reqUid = null,
+            current = null,
+            next = null,
+            delUrl = null
+        )
+        sendWithRetry(response)
+    }
+
+    private suspend fun sendWithRetry(res: SongResponse, maxRetries: Int = 5, delayMillis: Long = 3000L) {
+        var attempt = 0
+        while (attempt < maxRetries) {
+            try {
+                session.sendSerialized(res)
+                val ackDeferred = CompletableDeferred<Boolean>()
+                ackMap[res.uid] = ackDeferred
+
+                val ackReceived = withTimeoutOrNull(5000L) { ackDeferred.await() } ?: false
+                if (ackReceived) {
+                    logger.debug("ACK received for message to $uid on attempt $attempt.")
+                    return
+                } else {
+                    logger.warn("ACK not received for message to $uid on attempt $attempt.")
+                }
+            } catch (e: IOException) {
+                logger.warn("Failed to send message to $uid on attempt $attempt: ${e.message}")
+                if (e is WebSocketException) {
+                    close(CloseReason(CloseReason.Codes.PROTOCOL_ERROR, "WebSocket error"))
+                    return
+                }
+            } catch (e: CancellationException) {
+                throw e
+            } catch (e: Exception) {
+                logger.warn("Unexpected error while sending message to $uid on attempt $attempt: ${e.message}")
+            }
+
+            attempt++
+            delay(delayMillis)
+        }
+
+        logger.error("Failed to send message to $uid after $maxRetries attempts.")
+    }
+
+    suspend fun close(reason: CloseReason) {
+        try {
+            session.close(reason)
+        } catch (e: Exception) {
+            logger.warn("Error closing session: ${e.message}")
+        }
+    }
+}
+
+object SongRequestProcessor {
+    private val songMutex = Mutex()
+
+    suspend fun process(
+        data: SongRequest,
+        uid: String,
+        dispatcher: CoroutinesEventBus,
+        handler: SessionHandler,
+        logger: Logger
+    ) {
+        val user = UserService.getUser(uid) ?: return
+
+        when (data.type) {
+            SongType.ADD.value -> handleAdd(data, user, dispatcher, handler, logger)
+            SongType.REMOVE.value -> handleRemove(data, user, dispatcher, logger)
+            SongType.NEXT.value -> handleNext(user, dispatcher, logger)
+            else -> {
+                // Handle other types if necessary
+            }
+        }
+    }
+
+    private suspend fun handleAdd(
         data: SongRequest,
         user: User,
         dispatcher: CoroutinesEventBus,
+        handler: SessionHandler,
         logger: Logger
-) {
-    if (data.maxQueue != null && data.maxQueue > 0) SongConfigService.updateQueueLimit(user, data.maxQueue)
-    if (data.maxUserLimit != null && data.maxUserLimit > 0) SongConfigService.updatePersonalLimit(user, data.maxUserLimit)
-    if (data.isStreamerOnly != null) SongConfigService.updateStreamerOnly(user, data.isStreamerOnly)
-    if (data.isDisabled != null) SongConfigService.updateDisabled(user, data.isDisabled)
+    ) {
+        val url = data.url ?: return
+        val youtubeVideo = getYoutubeVideo(url) ?: run {
+            logger.warn("Failed to fetch YouTube video for URL: $url")
+            return
+        }
 
-    when (data.type) {
-        SongType.ADD.value -> {
-            data.url?.let { url ->
-                try {
-                    val youtubeVideo = getYoutubeVideo(url)
-                    if (youtubeVideo != null) {
-                        CoroutineScope(Dispatchers.Default).launch {
+        songMutex.withLock {
             SongListService.saveSong(
                 user,
                 user.token,
@@ -222,81 +263,95 @@ suspend fun handleSongRequest(
                 youtubeVideo.length,
                 user.username
             )
+        }
+
         dispatcher.post(
             SongEvent(
-                                    user.token,
-                                    SongType.ADD,
-                                    user.token,
-                                    CurrentSong.getSong(user),
-                                    youtubeVideo
+                uid = user.token,
+                type = SongType.ADD,
+                reqUid = user.token,
+                current = CurrentSong.getSong(user),
+                next = youtubeVideo
             )
         )
     }
-                    }
-                } catch (e: Exception) {
-                    logger.debug("SongType.ADD Error: $uid $e")
-                }
-            }
-        }
-        SongType.REMOVE.value -> {
-            data.url?.let { url ->
+
+    private suspend fun handleRemove(
+        data: SongRequest,
+        user: User,
+        dispatcher: CoroutinesEventBus,
+        logger: Logger
+    ) {
+        val url = data.url ?: return
+
+        songMutex.withLock {
             val songs = SongListService.getSong(user)
             val exactSong = songs.firstOrNull { it.url == url }
             if (exactSong != null) {
                 SongListService.deleteSong(user, exactSong.uid, exactSong.name)
             }
+        }
+
         dispatcher.post(
             SongEvent(
-                        user.token,
-                        SongType.REMOVE,
-                        null,
-                        null,
-                        null,
-                        url
+                uid = user.token,
+                type = SongType.REMOVE,
+                delUrl = url,
+                reqUid = null,
+                current = null,
+                next = null,
             )
         )
     }
-        }
-        SongType.NEXT.value -> {
-            val songList = SongListService.getSong(user)
+
+    private suspend fun handleNext(
+        user: User,
+        dispatcher: CoroutinesEventBus,
+        logger: Logger
+    ) {
         var song: SongList? = null
         var youtubeVideo: YoutubeVideo? = null
 
+        songMutex.withLock {
+            val songList = SongListService.getSong(user)
             if (songList.isNotEmpty()) {
                 song = songList[0]
                 SongListService.deleteSong(user, song.uid, song.name)
             }
+        }
 
         song?.let {
             youtubeVideo = YoutubeVideo(
-                    song.url,
-                    song.name,
-                    song.author,
-                    song.time
+                it.url,
+                it.name,
+                it.author,
+                it.time
             )
         }
+
         dispatcher.post(
             SongEvent(
-                    user.token,
-                    SongType.NEXT,
-                    song?.uid,
-                    youtubeVideo
+                uid = user.token,
+                type = SongType.NEXT,
+                current = null,
+                next = youtubeVideo,
+                reqUid = null,
+                delUrl = null
             )
         )
 
         CurrentSong.setSong(user, youtubeVideo)
     }
-    }
 }
 
 @Serializable
 data class SongRequest(
     val type: Int,
     val uid: String,
-    val url: String?,
-    val maxQueue: Int?,
-    val maxUserLimit: Int?,
-    val isStreamerOnly: Boolean?,
-    val remove: Int?,
-    val isDisabled: Boolean?,
+    val url: String? = null,
+    val maxQueue: Int? = null,
+    val maxUserLimit: Int? = null,
+    val isStreamerOnly: Boolean? = null,
+    val remove: Int? = null,
+    val isDisabled: Boolean? = null
 )

webserver/src/main/kotlin/space/mori/chzzk_bot/webserver/routes/WSSongRoutes.kt

@@ -1,14 +1,20 @@
 package space.mori.chzzk_bot.webserver.routes
 
+import io.ktor.server.application.ApplicationStopped
 import io.ktor.server.routing.*
 import io.ktor.server.websocket.*
 import io.ktor.websocket.*
+import kotlinx.coroutines.CompletableDeferred
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.cancel
 import kotlinx.coroutines.channels.ClosedReceiveChannelException
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.withTimeoutOrNull
 import kotlinx.serialization.Serializable
+import kotlinx.serialization.json.Json
 import org.koin.java.KoinJavaComponent.inject
 import org.slf4j.LoggerFactory
 import space.mori.chzzk_bot.common.events.*
@@ -17,15 +23,20 @@ import space.mori.chzzk_bot.common.utils.YoutubeVideo
 import java.util.concurrent.ConcurrentHashMap
 import java.util.concurrent.ConcurrentLinkedQueue
 
+val songScope = CoroutineScope(SupervisorJob() + Dispatchers.Default)
 fun Routing.wsSongRoutes() {
+    environment.monitor.subscribe(ApplicationStopped) {
+        songScope.cancel()
+    }
     val sessions = ConcurrentHashMap<String, ConcurrentLinkedQueue<WebSocketServerSession>>()
     val status = ConcurrentHashMap<String, SongType>()
     val logger = LoggerFactory.getLogger("WSSongRoutes")
+    val dispatcher: CoroutinesEventBus by inject(CoroutinesEventBus::class.java)
+    val ackMap = ConcurrentHashMap<String, ConcurrentHashMap<WebSocketServerSession, CompletableDeferred<Boolean>>>()
 
     fun addSession(uid: String, session: WebSocketServerSession) {
         sessions.computeIfAbsent(uid) { ConcurrentLinkedQueue() }.add(session)
     }
-
     fun removeSession(uid: String, session: WebSocketServerSession) {
         sessions[uid]?.remove(session)
         if(sessions[uid]?.isEmpty() == true) {
@@ -42,27 +53,35 @@ fun Routing.wsSongRoutes() {
         var attempt = 0
         while (attempt < maxRetries) {
             try {
-                session.sendSerialized(message)  // 메시지 전송 시도
-                return true  // 성공하면 true 반환
+                session.sendSerialized(message)
+                val ackDeferred = CompletableDeferred<Boolean>()
+                ackMap.computeIfAbsent(message.uid) { ConcurrentHashMap() }[session] = ackDeferred
+                val ackReceived = withTimeoutOrNull(delayMillis) { ackDeferred.await() } ?: false
+                if (ackReceived) {
+                    ackMap[message.uid]?.remove(session)
+                    return true
+                } else {
+                    attempt++
+                    logger.warn("ACK not received for message to ${message.uid} on attempt $attempt.")
+                }
             } catch (e: Exception) {
                 attempt++
                 logger.info("Failed to send message on attempt $attempt. Retrying in $delayMillis ms.")
                 e.printStackTrace()
-                delay(delayMillis)  // 재시도 전 대기
+                delay(delayMillis)
             }
         }
-        return false  // 재시도 실패 시 false 반환
+        return false
     }
 
     fun broadcastMessage(userId: String, message: SongResponse) {
         val userSessions = sessions[userId]
-
         userSessions?.forEach { session ->
-            CoroutineScope(Dispatchers.Default).launch {
+            songScope.launch {
                 val success = sendWithRetry(session, message)
                 if (!success) {
-                    println("Removing session for user $userId due to repeated failures.")
-                    userSessions.remove(session)  // 실패 시 세션 제거
+                    logger.info("Removing session for user $userId due to repeated failures.")
+                    removeSession(userId, session)
                 }
             }
         }
@@ -71,19 +90,13 @@ fun Routing.wsSongRoutes() {
     webSocket("/song/{uid}") {
         val uid = call.parameters["uid"]
         val user = uid?.let { UserService.getUser(it) }
-        if (uid == null) {
+        if (uid == null || user == null) {
             close(CloseReason(CloseReason.Codes.CANNOT_ACCEPT, "Invalid UID"))
             return@webSocket
         }
-        if (user == null) {
-            close(CloseReason(CloseReason.Codes.CANNOT_ACCEPT, "Invalid UID"))
-            return@webSocket
-        }
-
         addSession(uid, this)
-
         if(status[uid] == SongType.STREAM_OFF) {
-            CoroutineScope(Dispatchers.Default).launch {
+            songScope.launch {
                 sendSerialized(SongResponse(
                     SongType.STREAM_OFF.value,
                     uid,
@@ -93,33 +106,36 @@ fun Routing.wsSongRoutes() {
                 ))
             }
         }
-
         try {
             for (frame in incoming) {
                 when(frame) {
                     is Frame.Text -> {
-                        if(frame.readText().trim() == "ping") {
+                        val text = frame.readText().trim()
+                        if(text == "ping") {
                             send("pong")
+                        } else {
+                            val data = Json.decodeFromString<SongRequest>(text)
+                            if (data.type == SongType.ACK.value) {
+                                ackMap[data.uid]?.get(this)?.complete(true)
+                                ackMap[data.uid]?.remove(this)
+                            }
                         }
                     }
                     is Frame.Ping -> send(Frame.Pong(frame.data))
-                    else -> {
-
-                    }
+                    else -> {}
                 }
             }
         } catch(e: ClosedReceiveChannelException) {
             logger.error("Error in WebSocket: ${e.message}")
         } finally {
             removeSession(uid, this)
+            ackMap[uid]?.remove(this)
         }
     }
 
-    val dispatcher: CoroutinesEventBus by inject(CoroutinesEventBus::class.java)
-
     dispatcher.subscribe(SongEvent::class) {
         logger.debug("SongEvent: {} / {} {}", it.uid, it.type, it.current?.name)
-        CoroutineScope(Dispatchers.Default).launch {
+        songScope.launch {
             broadcastMessage(it.uid, SongResponse(
                 it.type.value,
                 it.uid,
@@ -132,7 +148,7 @@ fun Routing.wsSongRoutes() {
     }
     dispatcher.subscribe(TimerEvent::class) {
         if(it.type == TimerType.STREAM_OFF) {
-            CoroutineScope(Dispatchers.Default).launch {
+            songScope.launch {
                 broadcastMessage(it.uid, SongResponse(
                     it.type.value,
                     it.uid,
@@ -144,7 +160,6 @@ fun Routing.wsSongRoutes() {
         }
     }
 }
-
 @Serializable
 data class SerializableYoutubeVideo(
     val url: String,
@@ -152,9 +167,7 @@ data class SerializableYoutubeVideo(
     val author: String,
     val length: Int
 )
-
 fun YoutubeVideo.toSerializable() = SerializableYoutubeVideo(url, name, author, length)
-
 @Serializable
 data class SongResponse(
     val type: Int,

webserver/src/main/kotlin/space/mori/chzzk_bot/webserver/routes/WSTimerRoutes.kt

@@ -1,13 +1,20 @@
 package space.mori.chzzk_bot.webserver.routes
 
+import io.ktor.server.application.ApplicationStopped
 import io.ktor.server.routing.*
 import io.ktor.server.websocket.*
 import io.ktor.websocket.*
+import kotlinx.coroutines.CompletableDeferred
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.cancel
 import kotlinx.coroutines.channels.ClosedReceiveChannelException
+import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.withTimeoutOrNull
 import kotlinx.serialization.Serializable
+import kotlinx.serialization.json.Json
 import org.koin.java.KoinJavaComponent.inject
 import org.slf4j.LoggerFactory
 import space.mori.chzzk_bot.common.events.*
@@ -17,14 +24,19 @@ import space.mori.chzzk_bot.webserver.utils.CurrentTimer
 import java.util.concurrent.ConcurrentHashMap
 import java.util.concurrent.ConcurrentLinkedQueue
 
+val timerScope = CoroutineScope(SupervisorJob() + Dispatchers.Default)
 fun Routing.wsTimerRoutes() {
+    environment.monitor.subscribe(ApplicationStopped) {
+        timerScope.cancel()
+    }
     val sessions = ConcurrentHashMap<String, ConcurrentLinkedQueue<WebSocketServerSession>>()
     val logger = LoggerFactory.getLogger("WSTimerRoutes")
+    val dispatcher: CoroutinesEventBus by inject(CoroutinesEventBus::class.java)
+    val ackMap = ConcurrentHashMap<String, ConcurrentHashMap<WebSocketServerSession, CompletableDeferred<Boolean>>>()
 
     fun addSession(uid: String, session: WebSocketServerSession) {
         sessions.computeIfAbsent(uid) { ConcurrentLinkedQueue() }.add(session)
     }
-
     fun removeSession(uid: String, session: WebSocketServerSession) {
         sessions[uid]?.remove(session)
         if(sessions[uid]?.isEmpty() == true) {
@@ -32,82 +44,132 @@ fun Routing.wsTimerRoutes() {
         }
     }
 
+    suspend fun sendWithRetry(
+        session: WebSocketServerSession,
+        message: TimerResponse,
+        maxRetries: Int = 3,
+        delayMillis: Long = 2000L
+    ): Boolean {
+        var attempt = 0
+        while (attempt < maxRetries) {
+            try {
+                session.sendSerialized(message)
+                val ackDeferred = CompletableDeferred<Boolean>()
+                ackMap.computeIfAbsent(message.uid) { ConcurrentHashMap() }[session] = ackDeferred
+                val ackReceived = withTimeoutOrNull(delayMillis) { ackDeferred.await() } ?: false
+                if (ackReceived) {
+                    ackMap[message.uid]?.remove(session)
+                    return true
+                } else {
+                    attempt++
+                    logger.warn("ACK not received for message to ${message.uid} on attempt $attempt.")
+                }
+            } catch (e: Exception) {
+                attempt++
+                logger.info("Failed to send message on attempt $attempt. Retrying in $delayMillis ms.")
+                e.printStackTrace()
+                delay(delayMillis)
+            }
+        }
+        return false
+    }
+
+    fun broadcastMessage(uid: String, message: TimerResponse) {
+        val userSessions = sessions[uid]
+        userSessions?.forEach { session ->
+            timerScope.launch {
+                val success = sendWithRetry(session, message.copy(uid = uid))
+                if (!success) {
+                    logger.info("Removing session for user $uid due to repeated failures.")
+                    removeSession(uid, session)
+                }
+            }
+        }
+    }
+
     webSocket("/timer/{uid}") {
         val uid = call.parameters["uid"]
         val user = uid?.let { UserService.getUser(it) }
-        if (uid == null) {
+        if (uid == null || user == null) {
             close(CloseReason(CloseReason.Codes.CANNOT_ACCEPT, "Invalid UID"))
             return@webSocket
         }
-        if (user == null) {
-            close(CloseReason(CloseReason.Codes.CANNOT_ACCEPT, "Invalid UID"))
-            return@webSocket
-        }
-
         addSession(uid, this)
         val timer = CurrentTimer.getTimer(user)
 
-        if(timer?.type == TimerType.STREAM_OFF) {
-            CoroutineScope(Dispatchers.Default).launch {
-                sendSerialized(TimerResponse(TimerType.STREAM_OFF.value, null))
+        if (timer?.type == TimerType.STREAM_OFF) {
+            timerScope.launch {
+                sendSerialized(TimerResponse(TimerType.STREAM_OFF.value, null, uid))
             }
         } else {
-            CoroutineScope(Dispatchers.Default).launch {
+            timerScope.launch {
+                if(timer?.type == TimerType.STREAM_OFF) {
+                    sendSerialized(TimerResponse(TimerType.STREAM_OFF.value, null, uid))
+                } else {
                     if (timer == null) {
                         sendSerialized(
                             TimerResponse(
                                 TimerConfigService.getConfig(user)?.option ?: TimerType.REMOVE.value,
-                            null
+                                null,
+                                uid
                             )
                         )
                     } else {
                         sendSerialized(
                             TimerResponse(
                                 timer.type.value,
-                            timer.time
+                                timer.time,
+                                uid
                             )
                         )
                     }
                 }
             }
-
+        }
         try {
             for (frame in incoming) {
                 when(frame) {
                     is Frame.Text -> {
-                        if(frame.readText().trim() == "ping") {
+                        val text = frame.readText().trim()
+                        if(text == "ping") {
                             send("pong")
+                        } else {
+                            val data = Json.decodeFromString<TimerRequest>(text)
+                            if (data.type == TimerType.ACK.value) {
+                                ackMap[data.uid]?.get(this)?.complete(true)
+                                ackMap[data.uid]?.remove(this)
+                            }
                         }
                     }
                     is Frame.Ping -> send(Frame.Pong(frame.data))
-                    else -> {
-
-                    }
+                    else -> {}
                 }
             }
         } catch(e: ClosedReceiveChannelException) {
             logger.error("Error in WebSocket: ${e.message}")
         } finally {
             removeSession(uid, this)
+            ackMap[uid]?.remove(this)
         }
     }
 
-    val dispatcher: CoroutinesEventBus by inject(CoroutinesEventBus::class.java)
-
     dispatcher.subscribe(TimerEvent::class) {
         logger.debug("TimerEvent: {} / {}", it.uid, it.type)
         val user = UserService.getUser(it.uid)
         CurrentTimer.setTimer(user!!, it)
-        CoroutineScope(Dispatchers.Default).launch {
-            sessions[it.uid]?.forEach { ws ->
-                ws.sendSerialized(TimerResponse(it.type.value, it.time ?: ""))
-            }
+        timerScope.launch {
+            broadcastMessage(it.uid, TimerResponse(it.type.value, it.time ?: "", it.uid))
         }
     }
 }
-
 @Serializable
 data class TimerResponse(
     val type: Int,
-    val time: String?
+    val time: String?,
+    val uid: String
+)
+@Serializable
+data class TimerRequest(
+    val type: Int,
+    val uid: String
 )