using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.UI;
using UnityEngine.EventSystems;
using UnityEditor;
using Cinemachine;
using System.IO;
//using UnityStandardAssets.Characters.ThirdPerson;


public class MenuController : MonoBehaviour
{
    #region Default Values
    [Header("Default Menu Values")]
    [SerializeField] private float defaultVolume;
    [SerializeField] private int defaultSen;
    [SerializeField] private bool defaultInvertY;

    [Header("Levels To Load")]
    public string _newGameButtonLevel;
    private string levelToLoad;

    public SceneFader sceneFader;
    public GameObject player;

    public GameObject mainmenuFreshNewGame;
    public GameObject mainmenuContinueGame;
    private string SAVE_FOLDER;
    public GameObject mainMenuCanvases;

    private int menuNumber;
    #endregion

    #region Menu Dialogs
    [Header("Main Menu Components")]
    [SerializeField] private GameObject menuDefaultCanvas;
    [SerializeField] private GameObject GeneralSettingsCanvas;
    [SerializeField] private GameObject graphicsMenu;
    [SerializeField] private GameObject soundMenu;
    [SerializeField] private GameObject controlsMenu;
    [SerializeField] private GameObject confirmationMenu;
    [Space(10)]
    [Header("Menu Popout Dialogs")]
    [SerializeField] private GameObject noSaveDialog;
    [SerializeField] private GameObject newGameDialog;
    [SerializeField] private GameObject loadGameDialog;
    #endregion

    #region Slider Linking
    [Header("Menu Sliders")]
    [SerializeField] private Text controllerSenText;
    [SerializeField] private Slider controllerSenSlider;
    public float controlSenFloat = 2f;
    [Space(10)]
    [SerializeField] private Text volumeText;
    [SerializeField] private Slider volumeSlider;
    [Space(10)]
    [SerializeField] private Toggle invertYToggle;
    #endregion

    public static bool LoadSceneForSavedGame = false;

    private void Awake()
    {
        SAVE_FOLDER = Application.dataPath + "/save_";
        string fileName = Path.Combine(SAVE_FOLDER, "savegame.txt");
        if(File.Exists(fileName))
        {
            mainmenuFreshNewGame.SetActive(false);
            mainmenuContinueGame.SetActive(true);
        }
    }

    #region Initialisation - Button Selection & Menu Order
    private void Start()
    {
        menuNumber = 1;
    }
    #endregion

    //MAIN SECTION
    public IEnumerator ConfirmationBox()
    {
        confirmationMenu.SetActive(true);
        yield return new WaitForSeconds(2);
        confirmationMenu.SetActive(false);
    }

    private void Update()
    {
        if (Input.GetKeyDown(KeyCode.Escape))
        {
            if (menuNumber == 2 || menuNumber == 8)
            {
                GoBackToMainMenu();
                ClickSound();
            }

            else if (menuNumber == 3 || menuNumber == 4 || menuNumber == 5)
            {
                GoBackToOptionsMenu();
                ClickSound();
            }

            else if (menuNumber == 6) //CONTROLS MENU
            {
                ClickSound();
            }
        }
    }

    private void ClickSound()
    {
        GetComponent<AudioSource>().Play();
    }

    #region Menu Mouse Clicks
    public void MouseClick(string buttonType)
    {
        if (buttonType == "Controls")
        {
            transform.GetComponent<AudioSource>().Play();
            controlsMenu.SetActive(true);
            menuNumber = 6;
        }

        if (buttonType == "Graphics")
        {
            transform.GetComponent<AudioSource>().Play();
            mainMenuCanvases.SetActive(false);
            GeneralSettingsCanvas.SetActive(false);
            graphicsMenu.SetActive(true);
            menuNumber = 3;
        }

        if (buttonType == "Sound")
        {
            transform.GetComponent<AudioSource>().Play();
            mainMenuCanvases.SetActive(false);
            GeneralSettingsCanvas.SetActive(false);
            soundMenu.SetActive(true);
            menuNumber = 4;
        }

        if (buttonType == "Exit")
        {
            transform.GetComponent<AudioSource>().Play();
            Debug.Log("YES QUIT!");
            Application.Quit();
        }

        if (buttonType == "Options")
        {
            transform.GetComponent<AudioSource>().Play();
            menuDefaultCanvas.SetActive(false);
            GeneralSettingsCanvas.SetActive(true);
            menuNumber = 2;
        }

        if (buttonType == "NewGame")
        {
            transform.GetComponent<AudioSource>().Play();
            mainMenuCanvases.SetActive(false);
            menuDefaultCanvas.SetActive(false);
            newGameDialog.SetActive(true);
            menuNumber = 7;
        }
    }

    /*IEnumerator DisplaySavedGamesWindow(float time, bool direction)
    {
        float currentTime = 0;
        while (currentTime < time)
        {
            var scaler = currentTime / time;
            canvasScaler.scaleFactor = scaler;
            currentTime += Time.deltaTime;


            yield return null;
        }
    }*/
    #endregion

    public void VolumeSlider(float volume)
    {
        AudioListener.volume = volume;
        volumeText.text = volume.ToString("0.0");
    }

    public void VolumeApply()
    {
        PlayerPrefs.SetFloat("masterVolume", AudioListener.volume);
        Debug.Log(PlayerPrefs.GetFloat("masterVolume"));
        StartCoroutine(ConfirmationBox());
    }

    public void ControllerSen()
    {
        controllerSenText.text = controllerSenSlider.value.ToString("0");
        controlSenFloat = controllerSenSlider.value;
    }

    #region ResetButton
    public void ResetButton(string GraphicsMenu)
    {
        if (GraphicsMenu == "Audio")
        {
            AudioListener.volume = defaultVolume;
            volumeSlider.value = defaultVolume;
            volumeText.text = defaultVolume.ToString("0.0");
            VolumeApply();
        }

        if (GraphicsMenu == "Graphics")
        {
            controllerSenText.text = defaultSen.ToString("0");
            controllerSenSlider.value = defaultSen;
            controlSenFloat = defaultSen;

            invertYToggle.isOn = false;
        }
    }
    #endregion

    #region Dialog Options - This is where we load what has been saved in player prefs!
    public void ClickNewGameDialog(string ButtonType)
    {
        if (ButtonType == "Yes")
        {
            // Here to use a script to load the start game scene slowly smooth fade to black
            // Then fade back to transparent when loading/loaded the scene game !!!!!
            //SceneManager.LoadScene(_newGameButtonLevel);

            // When making new game to reset everything state scene everythig.
            // Including the uiSceneText for example.
            // To check how to reset everything to default !
            LoadSceneForSavedGame = false;
            newGameDialog.SetActive(false);

            var scenesCount = SceneManager.sceneCount;

            List<Scene> scene = new List<Scene>();
            for (int i = 0; i < scenesCount; i++)
            {
                scene.Add(SceneManager.GetSceneByBuildIndex(0));
            }

            if(scene.Count > 1)
            {
                //SceneManager.UnloadSceneAsync(1);
            }

            Time.timeScale = 1f;

            StartCoroutine(sceneFader.FadeAndLoadScene(SceneFader.FadeDirection.In, _newGameButtonLevel));
        }

        if (ButtonType == "No")
        {
            GoBackToMainMenu();
        }
    }

    public void ContinueGameButton()
    {
        transform.GetComponent<AudioSource>().Play();
        LoadSceneForSavedGame = true;
        newGameDialog.SetActive(false);
        StartCoroutine(sceneFader.FadeAndLoadScene(SceneFader.FadeDirection.In, _newGameButtonLevel));
    }

    #endregion

    #region Back to Menus
    public void GoBackToOptionsMenu()
    {
        transform.GetComponent<AudioSource>().Play();
        GeneralSettingsCanvas.SetActive(true);
        graphicsMenu.SetActive(false);
        soundMenu.SetActive(false);

        VolumeApply();

        menuNumber = 2;
    }

    public void GoBackToMainMenu()
    {
        transform.GetComponent<AudioSource>().Play();
        mainMenuCanvases.SetActive(true);
        menuDefaultCanvas.SetActive(true);
        newGameDialog.SetActive(false);
        loadGameDialog.SetActive(false);
        noSaveDialog.SetActive(false);
        GeneralSettingsCanvas.SetActive(false);
        graphicsMenu.SetActive(false);
        soundMenu.SetActive(false);
        menuNumber = 1;
    }

    public void ClickQuitOptions()
    {
        GoBackToMainMenu();
    }

    public void ClickNoSaveDialog()
    {
        GoBackToMainMenu();
    }
    #endregion
}