Enable queuing Sonos TTS requests

app/src/main/java/io/bartek/ttsserver/sonos/SonosController.kt

@@ -1,17 +0,0 @@
-package io.bartek.ttsserver.sonos
-
-import com.vmichalak.sonoscontroller.SonosDiscovery
-import java.io.File
-
-class SonosController(private val host: String, private val port: Int) {
-   fun clip(wave: File, zone: String, volume: Int) {
-      SonosDiscovery.discover().firstOrNull { it.zoneGroupState.name == zone }?.let {
-         val filename = wave.name
-         val url = "http://$host:$port/sonos/$filename"
-         val currentVolume = it.volume
-         it.volume = volume
-         it.clip(url, "")
-         it.volume = currentVolume
-      }
-   }
-}

app/src/main/java/io/bartek/ttsserver/sonos/SonosQueue.kt

@@ -0,0 +1,44 @@
+package io.bartek.ttsserver.sonos
+
+import com.vmichalak.sonoscontroller.SonosDiscovery
+import io.bartek.ttsserver.tts.TTS
+import io.bartek.ttsserver.web.SonosTTSRequestData
+import java.util.concurrent.BlockingQueue
+import java.util.concurrent.LinkedBlockingQueue
+
+private class Consumer(
+   private val tts: TTS,
+   private val host: String,
+   private val port: Int,
+   private val queue: BlockingQueue<SonosTTSRequestData>
+) : Runnable {
+   override fun run() = try {
+      while (true) {
+         consume(queue.take())
+      }
+   } catch (e: InterruptedException) {
+      Thread.currentThread().interrupt()
+   }
+
+
+   private fun consume(data: SonosTTSRequestData) {
+      SonosDiscovery.discover().firstOrNull { it.zoneGroupState.name == data.zone }?.let {
+         val file = tts.createTTSFile(data.text, data.language)
+         val filename = file.name
+         val url = "http://$host:$port/sonos/$filename"
+         val currentVolume = it.volume
+         it.volume = data.volume
+         it.clip(url, "")
+         it.volume = currentVolume
+      }
+   }
+}
+
+class SonosQueue(tts: TTS, host: String, port: Int) {
+   private val queue: BlockingQueue<SonosTTSRequestData> = LinkedBlockingQueue()
+   private val consumer = Thread(Consumer(tts, host, port, queue))
+
+   init { consumer.start() }
+
+   fun push(data: SonosTTSRequestData) = queue.add(data)
+}

app/src/main/java/io/bartek/ttsserver/sonos/SonosTTSRequest.kt

@@ -0,0 +1,2 @@
+package io.bartek.ttsserver.sonos
+

app/src/main/java/io/bartek/ttsserver/web/WebServer.kt

@@ -12,7 +12,7 @@ import io.bartek.ttsserver.network.NetworkUtil
 import io.bartek.ttsserver.preference.PreferenceKey
 import io.bartek.ttsserver.service.ForegroundService
 import io.bartek.ttsserver.service.ServiceState
-import io.bartek.ttsserver.sonos.SonosController
+import io.bartek.ttsserver.sonos.SonosQueue
 import io.bartek.ttsserver.tts.TTS
 import java.io.BufferedInputStream
 import java.io.File
@@ -24,7 +24,7 @@ class WebServer(port: Int, private val context: Context) : NanoHTTPD(port),
    private val preferences = PreferenceManager.getDefaultSharedPreferences(context)
    private val tts = TTS(context, this)
    private val endpoints = Endpoints()
-   private val sonos = SonosController(NetworkUtil.getIpAddress(context), port)
+   private val sonos = SonosQueue(tts, NetworkUtil.getIpAddress(context), port)
 
    override fun serve(session: IHTTPSession?): Response {
       try {
@@ -100,11 +100,11 @@ class WebServer(port: Int, private val context: Context) : NanoHTTPD(port),
          throw ResponseException(BAD_REQUEST, "")
       }
 
-      val (text, language, zone, volume) = extractBody(session) { SonosTTSRequestData.fromJSON(it) }
+      val data = extractBody(session) { SonosTTSRequestData.fromJSON(it) }
 
-      val file = tts.createTTSFile(text, language)
-      sonos.clip(file, zone, volume)
-      return newFixedLengthResponse("")
+      sonos.push(data)
+
+      return newFixedLengthResponse(ACCEPTED, MIME_PLAINTEXT, "")
    }
 
    private fun sonosCache(session: IHTTPSession): Response {