using Godot;
using System;
using System.Globalization;

[Tool]
public partial class AdventureResourceInspector : Node
{
	const int ORDERED = 0;
	const int EVENTS = 1;
	private PackedScene zombieEditorScene = ResourceLoader.Load<PackedScene>("uid://db5ah76l43ng2");

	private Tree tree;
	private AdventureLevelResource heldResource;
	private TreeItem root;
	private Texture2D deleteTexture = ResourceLoader.Load<Texture2D>("res://addons/pvzadventure/icons/delete.png");

	[Signal]
	public delegate void RefreshedEventHandler();

	[Export]
	public Control editorContainer;

	public override void _Ready()
	{
		tree = GetNode<Tree>("Tree");
	}

	public void Refresh(AdventureLevelResource resource)
	{
		heldResource = resource;
		RefreshTree();
	}

	private void RefreshTree()
	{
		tree.Clear();
		root = tree.CreateItem();
		root.DisableFolding = true;
		root.SetText(0, "Level");
		EmitSignal(SignalName.Refreshed);

		var initial = tree.CreateItem(root);
		initial.SetText(0, "Initial data");

		for (int i = 0; i < heldResource.waves.Count; i++)
		{
			var item = tree.CreateItem(root);
			item.DisableFolding = true;
			item.SetText(0, string.Format("Wave {0}", i));
			item.AddButton(0, deleteTexture, tooltipText: "Removes wave. (note that number will not visibly change)");

			var order = tree.CreateItem(item);
			order.SetText(0, "Zombies");

			var spawns = tree.CreateItem(item);
			spawns.SetText(0, "Events");

			var delay = tree.CreateItem(item);
			if (heldResource.waves[i].customWaveDelay > 0)
				delay.SetText(0, heldResource.waves[i].customWaveDelay.ToString(new CultureInfo("en-US")));
			else
				delay.SetText(0, "Delay");
			delay.SetEditable(0, true);
		}
	}

	public void OnNewButtonPressed()
	{
		var wave = new WaveData();
		heldResource.waves.Add(wave);
		RefreshTree();
	}

	public void OnItemSelected()
	{
		var selected = tree.GetSelected();

		if ((selected.GetParent() == root && selected.GetIndex() != 0) || selected.IsEditable(0)) return;

		foreach (var child in editorContainer.GetChildren())
		{
			child.QueueFree();
		}

		if (selected == root)
		{
			GD.Print("level pressed");
			return;
		}
		var index = selected.GetIndex();
		if (index == 0 && selected.GetParent() == root)
		{
			GD.Print("Initial data selected");
			return;
		}
		if (index == ORDERED)
			{
				var editor = zombieEditorScene.Instantiate<ZombieEditor>();

				editorContainer.AddChild(editor);
				editor.SetEditedWave(heldResource.waves[GetWaveIndex(selected.GetParent())]);
				return;
			}
			else if (index == EVENTS)
			{
				GD.Print("Events pressed");
				return;
			}


	}

	public void OnItemEdited()
	{
		var selected = tree.GetEdited();
		if (float.TryParse(selected.GetText(0), new CultureInfo("en-US"), out float result))
		{
			heldResource.waves[GetWaveIndex(selected.GetParent())].customWaveDelay = result;
		}
		else
		{
			selected.SetText(0, "Delay");
			heldResource.waves[GetWaveIndex(selected.GetParent())].customWaveDelay = 0;
		}
	}
	public void OnTreeButtonClicked(TreeItem item, int column, int id, int button_index)
	{
		heldResource.waves.RemoveAt(GetWaveIndex(item));
		RefreshTree();
	}

	private int GetWaveIndex(TreeItem waveTreeItem)
	{
		return int.Parse(waveTreeItem.GetText(0).Split(" ")[1]);
	}
}