package kernel;

import cc.OS;
import lua.Coroutine;
import util.EventBus;

using lua.Table;

/**
	Class for interacting with the native pullEvent system.
**/
class KernelEvents{
	public static final instance:KernelEvents = new KernelEvents();
	private function new () {}

	private var eventBus: util.EventBus<Array<Dynamic>> = new EventBus();

	/**
		Start pulling events. Blocking.
	**/
	public function startEventLoop() {
		// Log.info("Starting event loop");
		while (true){
			var event:Table<Int, Dynamic> = OS.pullEventRaw();
	
			var eventName:String = event[1];
			
			if (eventName == "terminate"){
				return;
			}

			eventBus.emit(eventName,event.toArray());
		}
	}

	public function on(eventName:String, callback:Array<Dynamic> -> Void):EventBusListner<Array<Dynamic>> {
		return eventBus.on(eventName,callback);
	}

	public function once(eventName:String, callback:Array<Dynamic> -> Void):EventBusListner<Array<Dynamic>> {
		return eventBus.once(eventName,callback);
	}

	public function removeListner(id:EventBusListner<Array<Dynamic>>) {
		return eventBus.removeListner(id);
	}
}