package kernel;

import lua.TableTools;
import lua.Coroutine;
import util.Vec.Vec2;
import haxe.Exception;

using tink.CoreApi;
using lua.Table;

/**
	Class for interacting with the native pullEvent system.
**/
class KernelEvents {
	/**
		Depends on: (Nothing)
	**/
	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> = pullEvents();

			var eventName:String = event[1];

			fireSignal(eventName,event);
		}
	}

	private function pullEvents():Table<Int, Dynamic> {
		return cast TableTools.pack(Coroutine.yield(null));
	}

	private function fireSignal(eventName: String,event:Table<Int, Dynamic> ) {
		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");
		}
	}
}