using Godot;
using System;
using System.Globalization;

#if TOOLS
[Tool]
public partial class AdventureResourceInspector : Node
{
	const string LEVEL_ITEM_NAME = "Level";
	const string INITIAL_ITEM_NAME = "Initial data";
	const string ZOMBIES_ITEM_NAME = "Zombies";
	const string EVENTS_ITEM_NAME = "Events";
	const string HUGEWAVE_ITEM_NAME = "Is huge wave?";
	private PackedScene zombieEditorScene = ResourceLoader.Load<PackedScene>("uid://db5ah76l43ng2");
	private PackedScene initialEditorScene = ResourceLoader.Load<PackedScene>("uid://sqessjn0m4o3");

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

	[Signal]
	public delegate void RefreshedEventHandler();

	[Export]
	public EditorsContainer editorContainer;
	[Export]
	public AdventureEditor adventureEditor;

	private TreeItem root;
	private TreeItem initialData;

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

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

	private void RefreshTree()
	{
		EmitSignal(SignalName.Refreshed);

		tree.Clear();
		root = CreateItem(LEVEL_ITEM_NAME);

		initialData = CreateItem(INITIAL_ITEM_NAME, root);

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

			CreateItem(ZOMBIES_ITEM_NAME, wave);
			CreateItem(EVENTS_ITEM_NAME, wave);
			CreateItem(HUGEWAVE_ITEM_NAME, TreeItem.TreeCellMode.Check, true, wave)
				.SetChecked(0, heldResource.waves[i].isHugeWave);
			

			var delay = tree.CreateItem(wave);
			if (heldResource.waves[i].customWaveDelay > 0)
				delay.SetText(0, heldResource.waves[i].customWaveDelay.ToString(new CultureInfo("en-US")));
			else
				delay.SetText(0, heldResource.standardWaveDelay.ToString());
			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.IsEditable(0) || selected.GetText(0).Split(" ")[0] == "Wave") return;

		editorContainer.ClearChildren();

		switch (selected.GetText(0))
		{
			case LEVEL_ITEM_NAME:
				EditorInterface.Singleton.EditResource(adventureEditor.editedResource);
				tree.DeselectAll();
				return;
			case ZOMBIES_ITEM_NAME:
				var editor = zombieEditorScene.Instantiate<ZombieEditor>();

				editorContainer.AddChild(editor);
				editor.SetEditedWave(heldResource.waves[GetWaveIndex(selected.GetParent())]);
				editor.SaveCallback += adventureEditor.Save;
				return;
			case EVENTS_ITEM_NAME:

				break;
			case INITIAL_ITEM_NAME:
				var initialEditor = initialEditorScene.Instantiate<InitialEditor>();
				editorContainer.AddChild(initialEditor);
				initialEditor.SetData(heldResource);
				initialEditor.SaveCallback += adventureEditor.Save;
				break;
		}
	}

	public void OnItemEdited()
	{
		var selected = tree.GetEdited();

		if (selected.GetCellMode(0) == TreeItem.TreeCellMode.Check)
		{
			heldResource.waves[GetWaveIndex(selected.GetParent())].isHugeWave = selected.IsChecked(0);
		}
		else
		{
			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;
			}
		}
		Callable.From(RefreshTree).CallDeferred();

	}
	public void OnTreeButtonClicked(TreeItem item, int column, int id, int button_index)
	{
		heldResource.waves.RemoveAt(GetWaveIndex(item));
		adventureEditor.HardReload();
		RefreshTree();
	}

	private int GetWaveIndex(TreeItem waveTreeItem)
	{
		return int.Parse(waveTreeItem.GetText(0).Split(" ")[1]);
	}
	private TreeItem CreateItem(string Name, TreeItem root = null)
	{
		if (root == null)
		{
			var item = tree.CreateItem();
			item.SetText(0, Name);
			return item;
		}
		else
		{
			var item = tree.CreateItem(root);
			item.SetText(0, Name);
			return item;
		}
	}
	private TreeItem CreateItem(string Name, TreeItem.TreeCellMode cellMode, bool editable, TreeItem root = null)
	{
		var item = tree.CreateItem(root);
		item.SetCellMode(0,cellMode);
		item.SetEditable(0, editable);
		item.SetText(0, Name);
		return item;
	}
}
#endif