using System.Collections.Generic;
using Godot;

public partial class NodeDisplay : GraphNode
{
	public ProgramNode node;

	[Signal]
	public delegate void OnDeleteNodeEventHandler();

	public override void _Ready()
	{
		if (node == null)
		{
			node = CreateProgramNode();
		}

		if (node == null) return;

		SetupDisplay();
	}

	public void DeleteNodePressed()
	{
		EmitSignal(SignalName.OnDeleteNode);
	}

	public static NodeDisplay Load(string content, Dictionary<ProgramNode, PackedScene> DSLNodes)
	{
		string nodeSanitized = content.Replace("\r\n", "").Trim();
		if (nodeSanitized.Length <= 0) return null;

		string nodeName = nodeSanitized.Split(",")[0].Replace("Name: ", "").ToLower();
		PackedScene prefab = GetPrefab(nodeName, DSLNodes);
		if (prefab == null) return null;

		NodeDisplay result = prefab.Instantiate<NodeDisplay>();
		result.node = result.CreateProgramNode();
		result.LoadContent(result, nodeSanitized);

		return result;
	}

	protected virtual ProgramNode CreateProgramNode()
	{
		return null;
	}

	protected virtual void LoadContent(NodeDisplay display, string content) { }

	public virtual void SetupDisplay() { }

	public virtual void ReadParameters() { }

	public HBoxContainer GetValueContainer()
	{
		return GetNode<HBoxContainer>("./Values");
	}

	protected HBoxContainer GetValueContainer(NodeDisplay display)
	{
		return display.GetValueContainer();
	}

	private static PackedScene GetPrefab(string nodeName, Dictionary<ProgramNode, PackedScene> DSLNodes)
	{
		foreach (ProgramNode programNode in DSLNodes.Keys)
		{
			if (programNode.DisplayText.ToLower() == nodeName)
			{
				return DSLNodes[programNode];
			}
		}

		return null;
	}
}