Add error handler to queued endpoints' workers

app/src/main/java/com/bartlomiejpluta/ttsserver/core/lua/loader/EndpointLoader.kt

@@ -62,6 +62,7 @@ class EndpointLoader(
    )
 
    private fun createQueuedEndpoint(luaTable: LuaTable): Endpoint = QueuedEndpoint(
+      context = context,
       uri = parseUri(luaTable),
       method = parseMethod(luaTable),
       accepts = parseAccepts(luaTable),

app/src/main/java/com/bartlomiejpluta/ttsserver/core/web/endpoint/QueuedEndpoint.kt

@@ -1,5 +1,6 @@
 package com.bartlomiejpluta.ttsserver.core.web.endpoint
 
+import android.content.Context
 import com.bartlomiejpluta.ttsserver.core.web.dto.Request
 import com.bartlomiejpluta.ttsserver.core.web.uri.UriTemplate
 import com.bartlomiejpluta.ttsserver.core.web.worker.Worker
@@ -9,19 +10,14 @@ import org.luaj.vm2.LuaClosure
 import java.util.concurrent.LinkedBlockingQueue
 
 class QueuedEndpoint(
+   context: Context,
    uri: UriTemplate,
    accepts: String?,
    method: NanoHTTPD.Method,
    consumer: LuaClosure
 ) : AbstractEndpoint(uri, accepts, method) {
    private val queue = LinkedBlockingQueue<Request>()
-   private val worker = Thread(
-      Worker(
-         queue,
-         consumer
-      )
-   ).also { it.name = uri.template }
-
+   private val worker = Thread(Worker(context, queue, consumer)).also { it.name = uri.template }
 
 
    override fun safeHit(request: Request): NanoHTTPD.Response? {

app/src/main/java/com/bartlomiejpluta/ttsserver/core/web/worker/Worker.kt

@@ -1,15 +1,21 @@
 package com.bartlomiejpluta.ttsserver.core.web.worker
 
+import android.content.Context
+import android.content.Intent
+import androidx.localbroadcastmanager.content.LocalBroadcastManager
 import com.bartlomiejpluta.ttsserver.core.web.dto.Request
 import com.bartlomiejpluta.ttsserver.service.foreground.ForegroundService
 import com.bartlomiejpluta.ttsserver.service.state.ServiceState
+import com.bartlomiejpluta.ttsserver.ui.main.MainActivity
 import org.luaj.vm2.LuaClosure
+import org.luaj.vm2.LuaError
 import org.luaj.vm2.LuaInteger
 import org.luaj.vm2.LuaValue
 import org.luaj.vm2.lib.ZeroArgFunction
 import java.util.concurrent.BlockingQueue
 
 class Worker(
+   private val context: Context,
    private val queue: BlockingQueue<Request>,
    private val consumer: LuaClosure
 ) : Runnable {
@@ -21,7 +27,19 @@ class Worker(
       Thread.currentThread().interrupt()
    }
 
-   private fun consume(request: Request) = consumer.call(request.luaTable, QueueSizeFunction(queue))
+   private fun consume(request: Request) = try {
+      consumer.call(request.luaTable, QueueSizeFunction(queue))
+   } catch (e: LuaError) {
+      handleLuaError(e)
+   }
+
+   private fun handleLuaError(exception: LuaError) {
+      LocalBroadcastManager
+         .getInstance(context)
+         .sendBroadcast(Intent(MainActivity.LUA_ERROR).also {
+            it.putExtra(MainActivity.MESSAGE, exception.message)
+         })
+   }
 
    class QueueSizeFunction(private val queue: BlockingQueue<Request>) : ZeroArgFunction() {
       override fun call(): LuaInteger = LuaValue.valueOf(queue.size)