using System.Collections;
using UnityEngine;
using UnityEngine.SceneManagement;

public class Loader : Singleton<Loader>, ILoader
{
    [SerializeField] private LoaderView _view = null;

    private void Awake()
    {
        StartCoroutine(Load());
    }

    public IEnumerator Load(ILoading target, float progress)
    {
        yield return target?.Load();
        _view.Fill(Mathf.Max(0, progress));
    }

    private IEnumerator Load()
    {
        const string gameSceneName = "game";
        AsyncOperation asyncOperation = SceneManager.LoadSceneAsync(gameSceneName, LoadSceneMode.Additive);
        asyncOperation.allowSceneActivation = false;

        yield return new WaitUntil(() => asyncOperation.progress >= 0.9f);
        asyncOperation.allowSceneActivation = true;
        _view.Fill(0.1f);

        yield return asyncOperation;
        SceneManager.SetActiveScene(SceneManager.GetSceneByName(gameSceneName));
    }

    public void Close()
    {
        if(SceneManager.sceneCount == 1)
            return;

        SceneManager.UnloadSceneAsync(0);
    }
}