using System;
using System.Collections.Generic;
using UnityEngine;

[DisallowMultipleComponent]
public sealed class VariableBehavior : NodeBehavior
{
	private static readonly Dictionary<string, BSValue> SharedVariables = new Dictionary<string, BSValue>(StringComparer.Ordinal);

	private void Start()
	{
		string key = GetKey();
		if (!SharedVariables.ContainsKey(key))
		{
			SharedVariables[key] = GetInputValue("Value").Normalize();
		}
		SetLocalOutputValueIfChanged("Value", SharedVariables[key]);
	}

	public override void OnRun(string inputPortName)
	{
		if (string.Equals(inputPortName, "Set", StringComparison.Ordinal))
		{
			string key = GetKey();
			SharedVariables[key] = GetInputValue("Value").Normalize();
			SetLocalOutputValueIfChanged("Value", SharedVariables[key]);
			TriggerOutput("Set");
		}
	}

	public override void OnGraphUpdate()
	{
		string key = GetKey();
		if (SharedVariables.TryGetValue(key, out var value))
		{
			SetLocalOutputValueIfChanged("Value", value);
		}
	}

	private string GetKey()
	{
		string text = GetInputValue("Name").AsText();
		if (string.IsNullOrWhiteSpace(text))
		{
			return "Variable";
		}
		return text.Trim();
	}
}