Enable Sonos devices discovering in config.lua | Allow networking in config.lua

app/build.gradle

@@ -29,6 +29,8 @@ android {
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.7"
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.7"
     implementation 'androidx.appcompat:appcompat:1.1.0'
     implementation 'androidx.core:core-ktx:1.2.0'
     implementation 'org.nanohttpd:nanohttpd:2.2.0'

app/src/main/java/com/bartlomiejpluta/ttsserver/core/lua/sandbox/SandboxFactory.kt

@@ -3,6 +3,9 @@ package com.bartlomiejpluta.ttsserver.core.lua.sandbox
 import android.content.Context
 import com.bartlomiejpluta.ttsserver.core.lua.lib.*
 import com.bartlomiejpluta.ttsserver.core.lua.loader.ConfigLoader
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.runBlocking
+import kotlinx.coroutines.withContext
 import org.luaj.vm2.Globals
 import org.luaj.vm2.LoadState
 import org.luaj.vm2.compiler.LuaC
@@ -23,7 +26,13 @@ class SandboxFactory(
    private val ttsLibrary: TTSLibrary,
    private val sonosLibrary: SonosLibrary
 ) {
-   fun createSandbox() = Globals().also { sandbox ->
+   fun createSandbox() = runBlocking {
+      withContext(Dispatchers.Default) {
+         createLuaGlobals()
+      }
+   }
+
+   private fun createLuaGlobals() = Globals().also { sandbox ->
       loadStandardLibraries(sandbox)
       loadApplicationLibraries(sandbox)
       install(sandbox)

app/src/main/res/raw/config.lua

@@ -14,6 +14,18 @@ function silenceMode()
     else return from <= now or now <= to end
 end
 
+function discoverSonosDevices()
+    local output = {}
+    local devices = sonos.discover()
+
+    for _, device in ipairs(devices) do
+        output[device:getZoneGroupState():getName()] = device
+    end
+
+    return output
+end
+
 return {
-    silenceMode = silenceMode
+    silenceMode = silenceMode,
+    sonosDevices = discoverSonosDevices()
 }