using NUnit.Framework;
using System.Collections;
using System.IO;
using UnityEditor;
using UnityEngine;
using UnityEngine.TestTools;

/// <summary>
/// Test the BackButton class
/// </summary>
public class BackButtonTests
{
    /// <summary>
    /// Setup the environment before each test
    /// </summary>
    [UnitySetUp]
    public IEnumerator SetupFunction()
    {
        string path = $"{Application.persistentDataPath}/wesign_unit_test.json";
        string oneUser = $"{{\"version\":1537,\"users\":[{{\"entries\":[],\"username\":\"TEST\",\"avatarIndex\":0,\"playtime\":0.0,\"minigames\":[],\"courses\":[]}}],\"currentUser\":0,\"currentMinigame\":0,\"currentCourse\":0,\"currentTheme\":0,\"useGPU\":false}}";

        File.WriteAllText(path, oneUser);
        PersistentDataController.PATH = path;
        PersistentDataController.GetInstance().Load();
        AssetDatabase.LoadAssetAtPath<UserAvatarList>("Assets/Accounts/ScriptableObjects/UserAvatarList.asset").Awake();
        SystemController.GetInstance().LoadNextScene("Common/Scenes/MainMenuScreen");
        yield return new WaitForSeconds(0.2f);
        SystemController.GetInstance().LoadNextScene("Common/Scenes/ListMinigamesScreen");
        yield return new WaitForSeconds(0.2f);
    }

    /// <summary>
    /// Cleanup after testing
    /// </summary>
    [TearDown]
    public void TearDown_BackButtonTests()
    {
        PersistentDataController.PATH = null;
    }

    /// <summary>
    /// Tests returning to the previous screen with the backbutton
    /// </summary>
    [UnityTest]
    public IEnumerator BackTest()
    {

        var backButton = GameObject.FindObjectOfType<BackButton>();
        backButton.Back();
        yield return new WaitForSeconds(0.2f);

        var mainMenuScreen = GameObject.FindObjectOfType<MainMenuScreen>();
        Assert.IsNotNull(mainMenuScreen);
    }
}