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There is a newer version: 1.6.3
package org.jellyfin.sdk.api.sockets

import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.StateFlow
import kotlinx.coroutines.flow.asStateFlow
import kotlinx.coroutines.flow.first
import kotlinx.coroutines.launch
import mu.KotlinLogging
import okhttp3.OkHttpClient
import okhttp3.Request
import okhttp3.Response
import okhttp3.WebSocket
import okhttp3.WebSocketListener
import org.jellyfin.sdk.api.client.HttpClientOptions
import java.util.concurrent.TimeUnit

private val logger = KotlinLogging.logger {}

public class OkHttpSocketConnection(
	clientOptions: HttpClientOptions,
	scope: CoroutineScope,
) : SocketConnection {
	private companion object {
		private const val HEADER_AUTHORIZATION = "Authorization"
		private const val CLOSE_REASON_NORMAL = 1000
	}

	private val client = OkHttpClient.Builder().apply {
		followRedirects(clientOptions.followRedirects)

		connectTimeout(clientOptions.connectTimeout.inWholeMilliseconds, TimeUnit.MILLISECONDS)
		readTimeout(clientOptions.socketTimeout.inWholeMilliseconds, TimeUnit.MILLISECONDS)
		writeTimeout(clientOptions.socketTimeout.inWholeMilliseconds, TimeUnit.MILLISECONDS)
	}.build()
	private var webSocket: WebSocket? = null
	private val _state = MutableStateFlow(SocketConnectionState.Disconnected())
	public override val state: StateFlow = _state.asStateFlow()

	private val listener = object : WebSocketListener() {
		override fun onOpen(webSocket: WebSocket, response: Response) {
			logger.debug { "WebSocket has opened" }
		}

		override fun onMessage(webSocket: WebSocket, text: String) {
			logger.debug { "Receiving (raw) message $text" }

			scope.launch {
				_state.value = SocketConnectionState.Message(text)
			}
		}

		override fun onClosing(webSocket: WebSocket, code: Int, reason: String) {
			logger.debug { "WebSocket is closing, code=$code, reason=$reason" }
		}

		@Suppress("PARAMETER_NAME_CHANGED_ON_OVERRIDE")
		override fun onClosed(closedWebSocket: WebSocket, code: Int, reason: String) {
			logger.debug { "WebSocket has closed, code=$code, reason=$reason" }
			_state.value = SocketConnectionState.Disconnected()

			if (webSocket == closedWebSocket) webSocket = null
		}

		@Suppress("PARAMETER_NAME_CHANGED_ON_OVERRIDE")
		override fun onFailure(failedWebSocket: WebSocket, t: Throwable, response: Response?) {
			logger.warn(t) { "WebSocket has failed" }
			_state.value = SocketConnectionState.Disconnected(t)

			if (webSocket == failedWebSocket) webSocket = null
		}
	}

	override suspend fun connect(url: String, authorization: String): Boolean {
		if (webSocket != null) disconnect()

		val request = Request.Builder().apply {
			url(url)
			header(HEADER_AUTHORIZATION, authorization)
		}.build()

		_state.value = SocketConnectionState.Connecting
		logger.info { "Connecting to $url" }
		webSocket = client.newWebSocket(request, listener)

		// Wait until the first non-connect message and check if it is not disconnected
		// to ensure we have a valid connection
		return state.first { it != SocketConnectionState.Connecting } !is SocketConnectionState.Disconnected
	}

	override suspend fun send(message: String): Boolean {
		logger.debug { "Sending (raw) message $message" }

		val ws = webSocket

		// No existing socket
		if (ws == null) {
			logger.warn { "Unable to send message: webSocket is null" }
			return false
		}

		val sent = ws.send(message)
		if (!sent) logger.warn { "Unable to send message: OkHttp returned false" }

		return sent
	}

	override suspend fun disconnect() {
		if (webSocket != null) {
			logger.info { "Disconnecting" }
			webSocket?.close(CLOSE_REASON_NORMAL, null)
			webSocket = null
		}
	}
}