package kernel;

import util.Vec.Vec2;
import haxe.Exception;
using tink.CoreApi;

import cc.OS;

using lua.Table;

/**
	Class for interacting with the native pullEvent system.
**/
class KernelEvents{
	public static var instance:KernelEvents;
	
	public final onAlarm: Signal<Int>;
	public final onChar: Signal<String>;
	public final onDisk: Signal<String>;
	public final onDiskEject: Signal<String>;
	public final onHttpCheck: Signal<{url:String,success:Bool,failReason:Any}>;
	public final onHttpFailure: Signal<{url:String,failReason:String,handle:Any}>;
	public final onHttpSuccess: Signal<{url:String,handle:Any}>;
	public final onKey: Signal<{keyCode: Int,isHeld:Bool}>;
	public final onKeyUp: Signal<Int>;
	public final onModemMessage: Signal<{addr: String,channel:Int, replyChannel:Int,message:Dynamic,distance:Int}>;
	public final onMonitorResize: Signal<String>;
	public final onMonitorTouch: Signal<{addr:String,pos: Vec2<Int>}>;
	public final onMouseClick: Signal<{button:ButtonType,pos: Vec2<Int>}>;
	public final onMouseDrag: Signal<{button:ButtonType,pos: Vec2<Int>}>;
	public final onMouseScroll: Signal<{dir:Int,pos: Vec2<Int>}>;
	public final onMouseUp: Signal<{button:ButtonType,pos: Vec2<Int>}>;
	public final onPaste: Signal<String>;
	public final onPeripheral: Signal<String>;
	public final onPeripheralDetach: Signal<String>;
	public final onRednetMessage: Signal<{sender:Int,message:Any,protocol:Any}>;
	public final onRedstone: Signal<Noise>;
	public final onSpeakerAudioEmpty: Signal<String>;
	public final onTaskComplete: Signal<{id:Int,success:Bool,failedReason:String}>;
	public final onTermResize: Signal<Noise>;
	public final onTerminate: Signal<Noise>;
	public final onTimer: Signal<Int>;
	public final onTurtleInventory: Signal<Noise>;
	public final onWebsocketClose: Signal<String>;
	public final onWebsocketFailure: Signal<{url:String,failReason:String}>;
	public final onWebsocketMessage: Signal<{url:String,message:String,isBinary:Bool}>;
	public final onWebsocketSuccess: Signal<{url:String,handle:Any}>;

	private final onAlarmTrigger: SignalTrigger<Int> = Signal.trigger();
	private final onCharTrigger: SignalTrigger<String> = Signal.trigger();
	private final onDiskTrigger: SignalTrigger<String> = Signal.trigger();
	private final onDiskEjectTrigger: SignalTrigger<String> = Signal.trigger();
	private final onHttpCheckTrigger: SignalTrigger<{url:String,success:Bool,failReason:Any}> = Signal.trigger();
	private final onHttpFailureTrigger: SignalTrigger<{url:String,failReason:String,handle:Any}> = Signal.trigger();
	private final onHttpSuccessTrigger: SignalTrigger<{url:String,handle:Any}> = Signal.trigger();
	private final onKeyTrigger: SignalTrigger<{keyCode: Int,isHeld:Bool}> = Signal.trigger();
	private final onKeyUpTrigger: SignalTrigger<Int> = Signal.trigger();
	private final onModemMessageTrigger: SignalTrigger<{addr: String,channel:Int, replyChannel:Int,message:Dynamic,distance:Int}> = Signal.trigger();
	private final onMonitorResizeTrigger: SignalTrigger<String> = Signal.trigger();
	private final onMonitorTouchTrigger: SignalTrigger<{addr:String,pos: Vec2<Int>}> = Signal.trigger();
	private final onMouseClickTrigger: SignalTrigger<{button:ButtonType,pos: Vec2<Int>}> = Signal.trigger();
	private final onMouseDragTrigger: SignalTrigger<{button:ButtonType,pos: Vec2<Int>}> = Signal.trigger();
	private final onMouseScrollTrigger: SignalTrigger<{dir:Int,pos: Vec2<Int>}> = Signal.trigger();
	private final onMouseUpTrigger: SignalTrigger<{button:ButtonType,pos: Vec2<Int>}> = Signal.trigger();
	private final onPasteTrigger: SignalTrigger<String> = Signal.trigger();
	private final onPeripheralTrigger: SignalTrigger<String> = Signal.trigger();
	private final onPeripheralDetachTrigger: SignalTrigger<String> = Signal.trigger();
	private final onRednetMessageTrigger: SignalTrigger<{sender:Int,message:Any,protocol:Any}> = Signal.trigger();
	private final onRedstoneTrigger: SignalTrigger<Noise> = Signal.trigger();
	private final onSpeakerAudioEmptyTrigger: SignalTrigger<String> = Signal.trigger();
	private final onTaskCompleteTrigger: SignalTrigger<{id:Int,success:Bool,failedReason:String}> = Signal.trigger();
	private final onTermResizeTrigger: SignalTrigger<Noise> = Signal.trigger();
	private final onTerminateTrigger: SignalTrigger<Noise> = Signal.trigger();
	private final onTimerTrigger: SignalTrigger<Int> = Signal.trigger();
	private final onTurtleInventoryTrigger: SignalTrigger<Noise> = Signal.trigger();
	private final onWebsocketCloseTrigger: SignalTrigger<String> = Signal.trigger();
	private final onWebsocketFailureTrigger: SignalTrigger<{url:String,failReason:String}> = Signal.trigger();
	private final onWebsocketMessageTrigger: SignalTrigger<{url:String,message:String,isBinary:Bool}> = Signal.trigger();
	private final onWebsocketSuccessTrigger: SignalTrigger<{url:String,handle:Any}> = Signal.trigger();

	@:allow(kernel.Init)
	private function new () {
		this.onAlarm = onAlarmTrigger.asSignal();
		this.onChar = onCharTrigger.asSignal();
		this.onDisk = onDiskTrigger.asSignal();
		this.onDiskEject = onDiskEjectTrigger.asSignal();
		this.onHttpCheck = onHttpCheckTrigger.asSignal();
		this.onHttpFailure = onHttpFailureTrigger.asSignal();
		this.onHttpSuccess = onHttpSuccessTrigger.asSignal();
		this.onKey = onKeyTrigger.asSignal();
		this.onKeyUp = onKeyUpTrigger.asSignal();
		this.onModemMessage = onModemMessageTrigger.asSignal();
		this.onMonitorResize = onMonitorResizeTrigger.asSignal();
		this.onMonitorTouch = onMonitorTouchTrigger.asSignal();
		this.onMouseClick = onMouseClickTrigger.asSignal();
		this.onMouseDrag = onMouseDragTrigger.asSignal();
		this.onMouseScroll = onMouseScrollTrigger.asSignal();
		this.onMouseUp = onMouseUpTrigger.asSignal();
		this.onPaste = onPasteTrigger.asSignal();
		this.onPeripheral = onPeripheralTrigger.asSignal();
		this.onPeripheralDetach = onPeripheralDetachTrigger.asSignal();
		this.onRednetMessage = onRednetMessageTrigger.asSignal();
		this.onRedstone = onRedstoneTrigger.asSignal();
		this.onSpeakerAudioEmpty = onSpeakerAudioEmptyTrigger.asSignal();
		this.onTaskComplete = onTaskCompleteTrigger.asSignal();
		this.onTermResize = onTermResizeTrigger.asSignal();
		this.onTerminate = onTerminateTrigger.asSignal();
		this.onTimer = onTimerTrigger.asSignal();
		this.onTurtleInventory = onTurtleInventoryTrigger.asSignal();
		this.onWebsocketClose = onWebsocketCloseTrigger.asSignal();
		this.onWebsocketFailure = onWebsocketFailureTrigger.asSignal();
		this.onWebsocketMessage = onWebsocketMessageTrigger.asSignal();
		this.onWebsocketSuccess = onWebsocketSuccessTrigger.asSignal();
	}

	/**
		Start pulling events. Blocking.
	**/
	public function startEventLoop() {
		while (true){
			var event:Table<Int, Dynamic> = OS.pullEventRaw();
	
			var eventName:String = event[1];
			
			switch eventName {
				case "alarm":
					this.onAlarmTrigger.trigger(event[2]);
				case "char":
					this.onCharTrigger.trigger(event[2]);
				case "disk":
					this.onDiskTrigger.trigger(event[2]);
				case "disk_eject":
					this.onDiskEjectTrigger.trigger(event[2]);
				case "http_check":
					this.onHttpCheckTrigger.trigger({url: event[2],success: event[3],failReason: event[4]});
				case "http_failure":
					this.onHttpFailureTrigger.trigger({url: event[2],failReason: event[3],handle: event[4]});
				case "http_success":
					this.onHttpSuccessTrigger.trigger({url: event[2],handle: event[3]});
				case "key":
					this.onKeyTrigger.trigger({keyCode: event[2],isHeld: event[3]});
				case "key_up":
					this.onKeyUpTrigger.trigger(event[2]);
				case "modem_message":
					this.onModemMessageTrigger.trigger({addr: event[2],channel: event[3],replyChannel: event[4],message: event[5],distance: event[6]});
				case "monitor_resize":
					this.onMonitorResizeTrigger.trigger(event[2]);
				case "monitor_touch":
					this.onMonitorTouchTrigger.trigger({addr: event[2],pos:{x: (event[3]:Int) - 1,y: (event[4]:Int) - 1}});
				case "mouse_click":
					this.onMouseClickTrigger.trigger({button: ccButtonToEnum(event[2]),pos:{ x: (event[3]:Int) - 1,y: (event[4]:Int) - 1}});
				case "mouse_drag":
					this.onMouseDragTrigger.trigger({button: ccButtonToEnum(event[2]),pos:{x: (event[3]:Int) - 1,y: (event[4]:Int) - 1}});
				case "mouse_scroll":
					this.onMouseScrollTrigger.trigger({dir: event[2],pos:{x:(event[3]:Int) - 1,y: (event[4]:Int) - 1}});
				case "mouse_up":
					this.onMouseUpTrigger.trigger({button: ccButtonToEnum(event[2]),pos:{x: (event[3]:Int) - 1,y: (event[4]:Int) - 1}});
				case "paste":
					this.onPasteTrigger.trigger(event[2]);
				case "peripheral":
					this.onPeripheralTrigger.trigger(event[2]);
				case "peripheral_detach":
					this.onPeripheralDetachTrigger.trigger(event[2]);
				case "rednet_message":
					this.onRednetMessageTrigger.trigger({sender: event[2],message: event[3],protocol: event[4]});
				case "redstone":
					this.onRedstoneTrigger.trigger(null);
				case "speaker_audio_empty":
					this.onSpeakerAudioEmptyTrigger.trigger(event[2]);
				case "task_complete":
					this.onTaskCompleteTrigger.trigger({id: event[2],success: event[3],failedReason: event[4]});
				case "term_resize":
					this.onTermResizeTrigger.trigger(null);
				case "terminate":
					this.onTerminateTrigger.trigger(null);
				case "timer":
					this.onTimerTrigger.trigger(event[2]);
				case "turtle_inventory":
					this.onTurtleInventoryTrigger.trigger(null);
				case "websocket_closed":
					this.onWebsocketCloseTrigger.trigger(event[2]);
				case "websocket_failure":
					this.onWebsocketFailureTrigger.trigger({url: event[2],failReason: event[3]});
				case "websocket_message":
					this.onWebsocketMessageTrigger.trigger({url: event[2],message: event[3],isBinary: event[4]});
				case "websocket_success":
					this.onWebsocketSuccessTrigger.trigger({url: event[2],handle: event[3]});
				default:
					Log.error("Unknown cc event: " + eventName);
			}
		}
	}

	private static function ccButtonToEnum(button: Dynamic): ButtonType {
		switch button {
			case 1:
				return Left;
			case 2:
				return Middle;
			case 3:
				return Right;
			default:
				throw new Exception("Invalid input");
		}
	}
}