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

/// <summary>
/// Test the SpellingBeeController class
/// </summary>
public class SpellingBeeControllerTests
{
    /// <summary>
    /// Setup for testing Spelling Bee
    /// </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();

        // Go to the minigame-selection scene to make sure that the minigameIndex is set correctly
        SystemController.GetInstance().LoadNextScene("Common/Scenes/ListMinigamesScreen");
        yield return new WaitForSeconds(0.2f);
        ListMinigamesScreen minigameScreen = GameObject.FindObjectOfType<ListMinigamesScreen>();
        minigameScreen.minigameList.SetCurrentMinigame(MinigameIndex.SPELLING_BEE);

        SystemController.GetInstance().LoadNextScene("SpellingBee/Scenes/SpellingBeeGame");
        yield return new WaitForSeconds(0.2f);

        // Fetch the SignPredictor and deactivate it, this stops the basic game-loop from happening
        var signPredictor = GameObject.FindObjectOfType<SignPredictor>();
        GameObject signPredictorController = signPredictor.gameObject;
        signPredictorController.SetActive(false);
        yield return new WaitForSeconds(0.2f);
    }

    /// <summary>
    /// Tests the calculations of the score
    /// </summary>
    [UnityTest]
    public IEnumerator CheckScoreTest()
    {
        SpellingBeeController spellingBeeController = GameObject.FindObjectOfType<SpellingBeeController>();
        yield return new WaitForSeconds(0.2f);
        Assert.AreEqual(0, spellingBeeController.CalculateScore());
        spellingBeeController.NextWord();
        Assert.AreEqual(0, spellingBeeController.CalculateScore());
        spellingBeeController.NextLetter(true);
        Assert.AreEqual(10, spellingBeeController.CalculateScore());
    }

    /// <summary>
    /// Tests the ending panel
    /// </summary>
    [UnityTest]
    public IEnumerator ActivateGameOverTest()
    {
        SpellingBeeController spellingBeeController = GameObject.FindObjectOfType<SpellingBeeController>();
        spellingBeeController.ActivateEnd(false);

        yield return new WaitForSeconds(0.2f);
        SpellingBeeGameEndedPanel SpellingBeeGameEndedPanel = GameObject.FindObjectOfType<SpellingBeeGameEndedPanel>();
        Assert.NotNull(SpellingBeeGameEndedPanel);
        Assert.AreEqual("VERLOREN", SpellingBeeGameEndedPanel.endText.text);
    }

    /// <summary>
    /// Tests the scoreboard in case of completion
    /// </summary>
    [UnityTest]
    public IEnumerator ActivateWinTests()
    {
        SpellingBeeController spellingBeeController = GameObject.FindObjectOfType<SpellingBeeController>();
        spellingBeeController.ActivateEnd(true);

        yield return new WaitForSeconds(0.2f);
        SpellingBeeGameEndedPanel SpellingBeeGameEndedPanel = GameObject.FindObjectOfType<SpellingBeeGameEndedPanel>();
        Assert.NotNull(SpellingBeeGameEndedPanel);
        Assert.AreEqual("GEWONNEN", SpellingBeeGameEndedPanel.endText.text);
    }

    /// <summary>
    /// Tests the scoreboard when timer goes off
    /// </summary>
    [UnityTest]
    public IEnumerator CheckGameOverTest()
    {
        SpellingBeeController spellingBeeController = GameObject.FindObjectOfType<SpellingBeeController>();
        spellingBeeController.AddSeconds(-60);

        yield return new WaitForSeconds(0.1f);
        SpellingBeeGameEndedPanel SpellingBeeGameEndedPanel = GameObject.FindObjectOfType<SpellingBeeGameEndedPanel>();
        Assert.NotNull(SpellingBeeGameEndedPanel);
        Assert.AreEqual("VERLOREN", SpellingBeeGameEndedPanel.endText.text);
    }

    /// <summary>
    /// Tests the completion from a word and from the entire theme + scoreboard
    /// </summary>
    [UnityTest]
    public IEnumerator CheckGoToNextWord()
    {
        SpellingBeeController spellingBeeController = GameObject.FindObjectOfType<SpellingBeeController>();
        var letters = spellingBeeController.SkipToEnd().ToList().Where((c) => c != ' ');

        spellingBeeController.PredictSign(spellingBeeController.GetSign());

        yield return new WaitForSeconds(0.2f);

        Assert.IsTrue(spellingBeeController.bonusTimeText.activeSelf);

        yield return new WaitForSeconds(1.0f);

        Assert.IsFalse(spellingBeeController.bonusTimeText.activeSelf);

        foreach (var _ in letters)
        {
            spellingBeeController.NextLetter(false);
        }
        spellingBeeController.NextWord();
        yield return new WaitForSeconds(0.2f);

        SpellingBeeGameEndedPanel SpellingBeeGameEndedPanel = GameObject.FindObjectOfType<SpellingBeeGameEndedPanel>();
        Assert.NotNull(SpellingBeeGameEndedPanel);
        Assert.AreEqual("GEWONNEN", SpellingBeeGameEndedPanel.endText.text);
    }

    /// <summary>
    /// Tests the feedback in the game
    /// </summary>
    [UnityTest]
    public IEnumerator FeedbackTest()
    {
        SpellingBeeController spellingBeeController = GameObject.FindObjectOfType<SpellingBeeController>();

        string sign = spellingBeeController.GetSign();
        float threshold = spellingBeeController.GetThreshold(sign);
        spellingBeeController.ProcessCurrentAndPredicted(0.9f * threshold, sign, 0.9f * threshold, sign);

        yield return new WaitForSeconds(0.2f);

        Assert.AreEqual("Goed", spellingBeeController.feedbackText.text);
        Assert.AreEqual(new Color(0x8b / 255.0f, 0xd4 / 255.0f, 0x5e / 255.0f), spellingBeeController.feedbackText.color);
        Assert.AreEqual(new Color(0x8b / 255.0f, 0xd4 / 255.0f, 0x5e / 255.0f), spellingBeeController.scoreBonus.color);

        yield return new WaitForSeconds(0.2f);

        if (sign != spellingBeeController.GetSign())
        {
            string expected = spellingBeeController.GetSign();
            float distance = 3.0f * spellingBeeController.GetThreshold(expected);

            spellingBeeController.ProcessCurrentAndPredicted(0.9f * threshold, sign, distance, expected);

            yield return new WaitForSeconds(2.5f);

            Assert.AreEqual($"Verkeerde gebaar: '{sign}'", spellingBeeController.feedbackText.text);
            Assert.AreEqual(new Color(0xf5 / 255.0f, 0x49 / 255.0f, 0x3d / 255.0f), spellingBeeController.feedbackText.color);

            spellingBeeController.ProcessCurrentAndPredicted(0.9f * threshold, sign, distance, expected);

            Assert.AreEqual(new Color(0xf5 / 255.0f, 0x49 / 255.0f, 0x3d / 255.0f), spellingBeeController.scoreBonus.color);
        }

        yield return new WaitForSeconds(0.2f);

        sign = spellingBeeController.GetSign();
        threshold = spellingBeeController.GetThreshold(sign);
        spellingBeeController.ProcessCurrentAndPredicted(1.2f * threshold, sign, 1.2f * threshold, sign);

        yield return new WaitForSeconds(0.2f);

        Assert.AreEqual("Bijna...", spellingBeeController.feedbackText.text);
        Assert.AreEqual(new Color(0xf2 / 255.0f, 0x7f / 255.0f, 0x0c / 255.0f), spellingBeeController.feedbackText.color);

        spellingBeeController.ProcessCurrentAndPredicted(3.0f * threshold, sign, 3.0f * threshold, sign);

        yield return new WaitForSeconds(0.2f);

        Assert.AreEqual("Detecteren...", spellingBeeController.feedbackText.text);
        Assert.AreEqual(new Color(0xf5 / 255.0f, 0x49 / 255.0f, 0x3d / 255.0f), spellingBeeController.feedbackText.color);

        if (sign != spellingBeeController.GetSign())
        {
            string expected = spellingBeeController.GetSign();
            float distance = 3.0f * spellingBeeController.GetThreshold(expected);

            spellingBeeController.ProcessCurrentAndPredicted(0.9f * threshold, sign, distance, expected);

            yield return new WaitForSeconds(2.5f);

            Assert.AreEqual($"Verkeerde gebaar: '{sign}'", spellingBeeController.feedbackText.text);
            Assert.AreEqual(new Color(0xf5 / 255.0f, 0x49 / 255.0f, 0x3d / 255.0f), spellingBeeController.feedbackText.color);

            spellingBeeController.ProcessCurrentAndPredicted(0.9f * threshold, sign, distance, expected);

            Assert.AreEqual(new Color(0xf5 / 255.0f, 0x49 / 255.0f, 0x3d / 255.0f), spellingBeeController.scoreBonus.color);
        }
    }

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