using System;


using Vintagestory.API.Client;
using Vintagestory.API.Common;
using Vintagestory.API.Datastructures;

namespace Automap
{
	public class AutomapGUIDialog : GuiDialog
	{
		public const string _automapControlPanelKey = "automapControlPanelKey";
		private const string _statusTextKey = @"txtStatus";

		private ILogger Logger;

		private long dashTickHandle;

		public override string ToggleKeyCombinationCode {
			get
			{
				return _automapControlPanelKey;
			}
		}

		private uint totalShards, voidShards, changesThisTick;
		private RunState lastState;


		public AutomapGUIDialog(ICoreClientAPI capi,AutomapSystem ams) : base(capi)
    	{

		Logger = capi.Logger;
		SetupDialog( );
		capi.Event.RegisterEventBusListener(AutomapStatusMsg, 1.0D, AutomapSystem.AutomapStatusEventKey);
		
		}

		//Event for GUI status display

		private void SetupDialog( )
		{
		ElementBounds dialogBounds = ElementStdBounds.AutosizedMainDialog.WithAlignment(EnumDialogArea.CenterMiddle);
					
		ElementBounds textBounds = ElementBounds.Fixed(0, 40, 500, 300);
		
		ElementBounds bgBounds = ElementBounds.Fill.WithFixedPadding(GuiStyle.ElementToDialogPadding);
		bgBounds.BothSizing = ElementSizing.FitToChildren;
		bgBounds.WithChildren(textBounds);

		ElementBounds toggleBounds = textBounds.CopyOffsetedSibling(3, 64, 5, 2);
		toggleBounds.fixedHeight = 24;
		toggleBounds.fixedWidth = 64;

		ElementBounds txtStatusBounds = textBounds.CopyOffsetedSibling(0, 26, 2, 4);
		txtStatusBounds.fixedHeight = 16;
		txtStatusBounds.percentWidth = 1;


		this.SingleComposer = capi.Gui.CreateCompo("automapControlPanel", dialogBounds)
			.AddShadedDialogBG(bgBounds)
			.AddDialogTitleBar("Automap Controls", OnTitleBarCloseClicked)
			.AddStaticText("Configure Automap settings:", CairoFont.WhiteDetailText( ), textBounds)
			.AddToggleButton("Run", CairoFont.ButtonText( ), RunToggle, toggleBounds, "btnRun")
			.AddDynamicText("Idle.", CairoFont.WhiteSmallText( ).WithFontSize(12), EnumTextOrientation.Left, txtStatusBounds, _statusTextKey)
			.Compose( );

			//Controls for ALL Block & Entity Designators (Enable/Disable)
			//_automapSystem.BlockID_Designators
			//_automapSystem.Entity_Designators
			//Renderer selection
			//Message verbosity? Speed?

			//A Button to add POI - notes manually (when AM running)

		}

		private void OnTitleBarCloseClicked( )
		{
		TryClose( );
		}

		/// <summary>
		/// Toggle Automap from/to RUN state
		/// </summary>
		/// <returns>The toggle.</returns>
		/// <param name="toggle">Run.</param>
		internal void RunToggle(bool toggle)
		{
		Logger.VerboseDebug("Dialog Changed; [ Automap Enabled: {0} ]", toggle);
		var statusText = this.SingleComposer.GetDynamicText(_statusTextKey);
		statusText.SetNewText($"State: {(toggle? "Run": "Halt" )}, Total: ?, Nulls: 0 " );

		if (toggle) {
		dashTickHandle = capi.Event.RegisterGameTickListener(UpdateDashDisplay, 6001);
		}
		else {
		capi.Event.UnregisterGameTickListener(dashTickHandle);
		}

		CommandData cmd = new CommandData(toggle ? RunState.Run : RunState.Stop);
		capi.Event.PushEvent(AutomapSystem.AutomapCommandEventKey, cmd);
		}


		private void AutomapStatusMsg(string eventName, ref EnumHandling handling, IAttribute data)
		{
		Logger.VerboseDebug("MsgBus RX: AutomapStatusMsg");
		StatusData realData = data as StatusData;
		totalShards = realData.TotalUpdates;
		voidShards = realData.VoidChunks;
		changesThisTick = realData.Delta;
		lastState = realData.CurrentState;
		}

		private void UpdateDashDisplay(float delay )
		{
		var statusText = this.SingleComposer.GetDynamicText(_statusTextKey);
		statusText.SetNewText($"State: {lastState}, Total: {totalShards}, Delta: {changesThisTick} Nulls: {voidShards} ");


		}


	}
}