using Godot;
using System;

public partial class Loader : Control
{
	private ProgressBar progressBar;
	private int sceneLoaded = 0;
	private string[] scenesToLoad = {
		"res://lab.tscn",
		"res://player.tscn"
	};

	// Called when the node enters the scene tree for the first time.
	public override void _Ready()
	{
		progressBar = GetNode<ProgressBar>("ProgressBar");
		string nextScene = GameManager.NextScene;
		if (nextScene != null) {
			GameManager.NextScene = "res://lab.tscn";
		}
		ResourceLoader.LoadThreadedRequest(scenesToLoad[sceneLoaded]);
		progressBar.MaxValue = 100 * scenesToLoad.Length;
	}

	// Called every frame. 'delta' is the elapsed time since the previous frame.
	public override void _Process(double delta)
	{
		Godot.Collections.Array progress = new();
		switch(ResourceLoader.LoadThreadedGetStatus(scenesToLoad[sceneLoaded], progress))
		{
			case ResourceLoader.ThreadLoadStatus.InProgress:
				progressBar.Value = 100 * sceneLoaded + (int)((float)progress[0] * 100);
				break;
			case ResourceLoader.ThreadLoadStatus.Loaded:
				sceneLoaded++;
				if(sceneLoaded < scenesToLoad.Length) {
					ResourceLoader.LoadThreadedRequest(scenesToLoad[sceneLoaded]);
				} else {
					var transit = GetNode<SceneTransit>("/root/SceneTransit");
					transit.Transit("res://lab.tscn", false);
				}
				break;
			default:
				GD.Print("Error loading scene: " + scenesToLoad[sceneLoaded]);
				break;
		}
	}
}