add WebSocket timers

- EventDispatcher, TimerEvent add.

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

@@ -12,6 +12,7 @@ import xyz.r2turntrue.chzzk4j.chat.ChzzkChat
 import xyz.r2turntrue.chzzk4j.types.channel.ChzzkChannel
 import java.lang.Exception
 import java.net.SocketTimeoutException
+import java.time.LocalDateTime
 
 object ChzzkHandler {
     private val handlers = mutableListOf<UserHandler>()
@@ -19,7 +20,7 @@ object ChzzkHandler {
     @Volatile private var running: Boolean = false
 
     fun addUser(chzzkChannel: ChzzkChannel, user: User) {
-        handlers.add(UserHandler(chzzkChannel, logger, user))
+        handlers.add(UserHandler(chzzkChannel, logger, user, streamStartTime = null))
     }
 
     fun enable() {
@@ -82,18 +83,19 @@ object ChzzkHandler {
 
 class UserHandler(
     val channel: ChzzkChannel,
-    private val logger: Logger,
+    val logger: Logger,
     private var user: User,
-    private var _isActive: Boolean = false
+    private var _isActive: Boolean = false,
+    var streamStartTime: LocalDateTime?,
 ) {
     private lateinit var messageHandler: MessageHandler
 
-    private var listener: ChzzkChat = chzzk.chat(channel.channelId)
+    var listener: ChzzkChat = chzzk.chat(channel.channelId)
         .withAutoReconnect(true)
         .withChatListener(object : ChatEventListener {
             override fun onConnect(chat: ChzzkChat, isReconnecting: Boolean) {
                 logger.info("ChzzkChat connected. ${channel.channelName} - ${channel.channelId} / reconnected: $isReconnecting")
-                messageHandler = MessageHandler(channel, logger, chat)
+                messageHandler = MessageHandler(this@UserHandler)
             }
 
             override fun onError(ex: Exception) {
@@ -137,11 +139,13 @@ class UserHandler(
             listener.connectBlocking()
 
             Discord.sendDiscord(user, status)
+            streamStartTime = LocalDateTime.now()
 
             listener.sendChat("${user.username} 님의 방송이 감지되었습니다.")
 
         } else {
             logger.info("${user.username} is offline.")
+            streamStartTime = null
             listener.closeAsync()
         }
     }

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

@@ -1,22 +1,21 @@
 package space.mori.chzzk_bot.chatbot.chzzk
 
-import org.slf4j.Logger
+import space.mori.chzzk_bot.common.events.EventDispatcher
+import space.mori.chzzk_bot.common.events.TimerEvent
+import space.mori.chzzk_bot.common.events.TimerType
 import space.mori.chzzk_bot.common.models.User
 import space.mori.chzzk_bot.common.services.CommandService
 import space.mori.chzzk_bot.common.services.CounterService
 import space.mori.chzzk_bot.common.services.UserService
 import xyz.r2turntrue.chzzk4j.chat.ChatMessage
 import xyz.r2turntrue.chzzk4j.chat.ChzzkChat
-import xyz.r2turntrue.chzzk4j.types.channel.ChzzkChannel
 import java.time.LocalDateTime
 import java.time.format.DateTimeFormatter
 import java.time.temporal.ChronoUnit
 
 
 class MessageHandler(
-    private val channel: ChzzkChannel,
+    private val handler: UserHandler
-    private val logger: Logger,
-    private val listener: ChzzkChat
 ) {
     private val commands = mutableMapOf<String, (msg: ChatMessage, user: User) -> Unit>()
 
@@ -27,6 +26,10 @@ class MessageHandler(
     private val followPattern = Regex("<following>")
     private val daysPattern = """<days:(\d{4})-(\d{2})-(\d{2})>""".toRegex()
 
+    private val channel = handler.channel
+    private val logger = handler.logger
+    private val listener = handler.listener
+
     init {
         reloadCommand()
     }
@@ -109,6 +112,50 @@ class MessageHandler(
         listener.sendChat("명령어 '$command' 삭제되었습니다.")
     }
 
+    private suspend fun timerCommand(msg: ChatMessage, user: User) {
+        if (msg.profile?.userRoleCode == "common_user") {
+            listener.sendChat("매니저만 이 명령어를 사용할 수 있습니다.")
+            return
+        }
+
+        val parts = msg.content.split("/", limit = 2)
+        if (parts.size < 2) {
+            listener.sendChat("타이머 명령어 형식을 잘 찾아봐주세요!")
+            return
+        }
+
+        val command = parts[1]
+        val dispatcher = EventDispatcher
+        when(command) {
+            "업타임" -> {
+                val currentTime = LocalDateTime.now()
+                val streamOnTime = handler.streamStartTime
+
+                val hours = ChronoUnit.HOURS.between(currentTime, streamOnTime)
+                val minutes = ChronoUnit.MINUTES.between(currentTime.plusHours(hours), streamOnTime)
+                val seconds = ChronoUnit.MINUTES.between(currentTime.plusHours(hours).plusMinutes(minutes), streamOnTime)
+
+                dispatcher.dispatch(TimerEvent(
+                    user.token,
+                    TimerType.TIMER,
+                    String.format("%02d:%02d:%02d", hours, minutes, seconds)
+                ))
+            }
+            "삭제" -> dispatcher.dispatch(TimerEvent(user.token, TimerType.REMOVE, ""))
+            else -> {
+                try {
+                    val time = command.toInt()
+                    val currentTime = LocalDateTime.now()
+                    val timestamp = ChronoUnit.MINUTES.addTo(currentTime, time.toLong())
+
+                    dispatcher.dispatch(TimerEvent(user.token, TimerType.TIMER, timestamp.toString()))
+                } catch(_: Exception) {
+                    listener.sendChat("!타이머/숫자 형식으로 적어주세요! 단위: 분")
+                }
+            }
+        }
+    }
+
     internal fun handle(msg: ChatMessage, user: User) {
         val commandKey = msg.content.split(' ')[0]
 

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

@@ -0,0 +1,19 @@
+package space.mori.chzzk_bot.common.events
+
+interface Event
+
+interface EventHandler<E: Event> {
+    suspend fun handle(event: E)
+}
+
+object EventDispatcher {
+    private val handlers = mutableMapOf<Class<out Event>, MutableList<EventHandler<out Event>>>()
+
+    fun <E : Event> register(eventClass: Class<E>, handler: EventHandler<E>) {
+        handlers.computeIfAbsent(eventClass) { mutableListOf() }.add(handler)
+    }
+
+    suspend fun <E : Event> dispatch(event: E) {
+        handlers[event::class.java]?.forEach { (it as EventHandler<E>).handle(event) }
+    }
+}

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

@@ -0,0 +1,11 @@
+package space.mori.chzzk_bot.common.events
+
+enum class TimerType {
+    UPTIME, TIMER, REMOVE
+}
+
+class TimerEvent(
+    val uid: String,
+    val type: TimerType,
+    val time: String?
+): Event

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

@@ -1,6 +1,7 @@
 package space.mori.chzzk_bot.webserver
 
 import io.ktor.http.*
+import io.ktor.serialization.kotlinx.*
 import io.ktor.serialization.kotlinx.json.*
 import io.ktor.server.application.*
 import io.ktor.server.engine.*
@@ -12,9 +13,18 @@ import io.ktor.server.routing.*
 import io.ktor.server.websocket.*
 import kotlinx.serialization.json.Json
 import space.mori.chzzk_bot.webserver.routes.apiRoutes
+import space.mori.chzzk_bot.webserver.routes.wsTimerRoutes
+import java.time.Duration
 
 val server = embeddedServer(Netty, port = 8080) {
-    install(WebSockets)
+    install(WebSockets) {
+        pingPeriod = Duration.ofSeconds(15)
+        timeout = Duration.ofSeconds(15)
+        maxFrameSize = Long.MAX_VALUE
+        masking = false
+        contentConverter = KotlinxWebsocketSerializationConverter(Json)
+    }
+
     install(ContentNegotiation) {
         json(Json {
             prettyPrint = true
@@ -27,6 +37,7 @@ val server = embeddedServer(Netty, port = 8080) {
     }
     routing {
         apiRoutes()
+        wsTimerRoutes()
         swaggerUI("swagger-ui/index.html", "openapi/documentation.yaml") {
             options {
                 version = "1.1.0"

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

@@ -0,0 +1,76 @@
+package space.mori.chzzk_bot.webserver.routes
+
+import io.ktor.server.routing.*
+import io.ktor.server.websocket.*
+import io.ktor.websocket.*
+import kotlinx.coroutines.channels.ClosedReceiveChannelException
+import kotlinx.serialization.Serializable
+import space.mori.chzzk_bot.common.events.Event
+import space.mori.chzzk_bot.common.events.TimerType
+import space.mori.chzzk_bot.common.services.UserService
+import space.mori.chzzk_bot.common.events.EventDispatcher
+import space.mori.chzzk_bot.common.events.EventHandler
+import java.util.concurrent.ConcurrentHashMap
+
+fun Routing.wsTimerRoutes() {
+    val sessions = ConcurrentHashMap<String, WebSocketServerSession>()
+
+    webSocket("/timer/{uid}") {
+        val uid = call.parameters["uid"]
+        val user = uid?.let { UserService.getUser(it) }
+        if (uid == null) {
+            close(CloseReason(CloseReason.Codes.CANNOT_ACCEPT, "Invalid UID"))
+            return@webSocket
+        }
+        if (user == null) {
+            close(CloseReason(CloseReason.Codes.CANNOT_ACCEPT, "Invalid UID"))
+            return@webSocket
+        }
+
+        sessions[uid] = this
+
+        try {
+            for (frame in incoming) {
+                when(frame) {
+                    is Frame.Text -> {
+
+                    }
+                    is Frame.Ping -> send(Frame.Pong(frame.data))
+                    else -> {
+
+                    }
+                }
+            }
+        } catch(_: ClosedReceiveChannelException) {
+
+        } finally {
+            sessions.remove(uid)
+        }
+    }
+
+    run {
+        val dispatcher = EventDispatcher
+
+        dispatcher.register(TimerEvent::class.java, object : EventHandler<TimerEvent> {
+            override suspend fun handle(event: TimerEvent) {
+                sessions[event.uid]?.sendSerialized(TimerResponse(event.type, event.time ?: ""))
+            }
+        })
+    }
+}
+
+enum class TimerType {
+    UPTIME, TIMER
+}
+
+class TimerEvent(
+    val uid: String,
+    val type: TimerType,
+    val time: String?
+): Event
+
+@Serializable
+data class TimerResponse(
+    val type: TimerType,
+    val time: String?
+)