using Godot;
using System.Linq;
using VirtualChemistry.Chemistry.Compounds.Implements;
using VirtualChemistry.Chemistry.Containers;
using VirtualChemistry.Chemistry.Mixtures.Implements;

public partial class Bottle : MenuButton, IChemicalContainer
{
	private double ContainerVolume { get; set; }
	private HeterogeneousMixture HeterogeneousMixture { get; set; }
	public double Volume() => ContainerVolume;

	public HeterogeneousMixture Content { get; set; }
	public double EnvironmentPressure { get; set; }
	public double EnvironmentTemperature { get; set; }
	public HeterogeneousMixture ChemicalContent { get; set; } = HeterogeneousMixture.Null;
	public HomogeneousMixture MainComponent => ChemicalContent.Layers
		.DefaultIfEmpty(HomogeneousMixture.Null)
		.MaxBy(x => x.Amount);
	public Compound MainCompound => MainComponent.Compounds
		.DefaultIfEmpty(Compound.Null)
		.MaxBy(x => x.Amount);

	private const string Empty = "Empty";
	private string PotionName => $"Main: {(MainCompound == Compound.Null ? Empty : MainCompound.Expression)}";
	private string PotionAmount => $"Amount: {(MainCompound == Compound.Null ? 0d : ChemicalContent.Amount)}";
	
	public Sprite2D ContentTexture { get; set; }

	private void BuildMenu()
	{
		PopupMenu menu = GetPopup();
		menu.Clear();
		foreach (var w in menu.GetSignalConnectionList(PopupMenu.SignalName.IdPressed))
			menu.Disconnect(PopupMenu.SignalName.IdPressed, w["callable"].AsCallable());
		menu.AddItem(PotionName, 0);
		menu.AddItem(PotionAmount, 1);
		menu.SetItemDisabled(0, true);
		menu.SetItemDisabled(1, true);
		menu.AddItem("Construct", 2);
		menu.AddItem("Fill From Flask", 3);
		menu.AddItem("Load From String", 4);
		menu.AddItem("Add to Flask", 5);
		menu.AddItem("Save to String", 6);
		menu.AddItem("Discard", 7);
		menu.Connect(PopupMenu.SignalName.IdPressed, Callable.From((int idx) => MenuHandle(idx)));
	}

	private void MenuHandle(int idx)
	{
		switch (idx)
		{
			case 2:
				GlobalScene.Demo.SelectedBottle = this;
				GlobalScene.MainScene.SwitchToConstructor();
				return;
			case 3:
				ChemicalContent = GlobalScene.Flask.Content;
				ChemicalContent.Container = this;
				GlobalScene.Flask.Content = HeterogeneousMixture.Null;
				GlobalScene.Flask.Update();
				return;
			case 4:
				return;
			default:
				return;
		}
	}

	// Called when the node enters the scene tree for the first time.
	public override void _Ready()
	{
		ContentTexture = GetNode<Sprite2D>("Content");
		if (ChemicalContent == HeterogeneousMixture.Null)
			ContentTexture.Modulate = new Color(0, 0, 0, 0);
		else
		{
			ContentTexture.Modulate = new Color(
				MainComponent.ColorRed,
				MainComponent.ColorGreen,
				MainComponent.ColorBlue,
				MainComponent.ColorTransparent
			);
		}
		BuildMenu();
	}

	// Called every frame. 'delta' is the elapsed time since the previous frame.
	public override void _Process(double delta)
	{
	}
}