using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;

public class UIMenuControllerManager : MonoBehaviour
{
    public int menuItemIndexVertical;
    public int menuItemIndexVerticalMax;

    public int menuItemIndexHorizontal;
    public int menuItemIndexHorizontalMax;

    [HideInInspector] public bool _verticalButtonDpadIsPressedDown;
    [HideInInspector] public bool _horizontalButtonDpadUpIsPressedDown;
    [HideInInspector] public bool upDpadVerticalButton;
    [HideInInspector] public bool downDpadVericalButton;

    private static UIMenuControllerManager _instance;
    public static UIMenuControllerManager Getinstance() { return _instance; }

    public void Awake()
    {
        if (!_instance)
        {
            _instance = this;
        }
    }

    public void DpadNavigateVertical()
    {
        if (menuItemIndexVerticalMax != 0) //If Verical Max value is not zero:
        {
            if (Input.GetAxis("DpadVertical") > 0 && !_verticalButtonDpadIsPressedDown)
            {
                menuItemIndexVertical -= 1;
                print("DpadVertical UP");
                if (menuItemIndexVertical == -1)
                {
                    menuItemIndexVertical = menuItemIndexVerticalMax - 1;
                }
                if (_verticalButtonDpadIsPressedDown == false)
                {
                    _verticalButtonDpadIsPressedDown = true;
                }
                upDpadVerticalButton = true;
            }
            else if (Input.GetAxis("DpadVertical") < 0 && !_verticalButtonDpadIsPressedDown)
            {
                menuItemIndexVertical += 1;
                print("DpadVertical DOWN");
                if (menuItemIndexVertical == menuItemIndexVerticalMax)
                {
                    menuItemIndexVertical = 0;
                }
                if (_verticalButtonDpadIsPressedDown == false)
                {
                    _verticalButtonDpadIsPressedDown = true;
                }
                downDpadVericalButton = true;
            }
            else if (Input.GetAxis("DpadVertical") == 0)
            {
                _verticalButtonDpadIsPressedDown = false;
                upDpadVerticalButton = false;
                downDpadVericalButton = false;
            }
        }
    }

    public void UpdateCurrentSelectedVerticalButton(List<Button> button) 
    {
        EventSystem.current.SetSelectedGameObject(button[menuItemIndexVertical].gameObject);
    }


    public void DpadHorizontalSliderValuesUpdate(List<Slider> slider, List<float> speed)
    {
        if (slider[menuItemIndexVertical] != null)
        {
            if (slider[menuItemIndexVertical].direction == Slider.Direction.LeftToRight)
            {
                if (Input.GetAxis("DpadHorizontal") < 0)
                {
                    slider[menuItemIndexVertical].value += speed[menuItemIndexVertical];
                }
                else if (Input.GetAxis("DpadHorizontal") > 0)
                {
                    slider[menuItemIndexVertical].value -= speed[menuItemIndexVertical];
                }
            }
            else
            {
                if (slider[menuItemIndexVertical] != null)
                {
                    if (Input.GetAxis("DpadHorizontal") < 0)
                    {
                        slider[menuItemIndexVertical].value -= speed[menuItemIndexVertical];
                    }
                    else if (Input.GetAxis("DpadHorizontal") > 0)
                    {
                        slider[menuItemIndexVertical].value += speed[menuItemIndexVertical];
                    }
                }
            }
        }
    }

    public void DpadHorizontalSliderInvertedValuesUpdate(List<Slider> slider, float speed)
    {
        if (slider[menuItemIndexVertical] != null)
        {
            if (Input.GetAxis("DpadHorizontal") < 0)
            {
                slider[menuItemIndexVertical].value -= speed;
            }
            else if (Input.GetAxis("DpadHorizontal") > 0)
            {
                slider[menuItemIndexVertical].value += speed;
            }
        }
    }

    public void SelectedMenuItemUpdate_TeleportHighlight(ref List<RectTransform> selectedMenuItem, RectTransform selectedItemHighlight)
    {
        for (int i = 0; i < selectedMenuItem.Count; i++)
        {
            if (i == menuItemIndexVertical)
            {
                selectedItemHighlight.anchoredPosition = selectedMenuItem[i].anchoredPosition;
                selectedItemHighlight.pivot = selectedMenuItem[i].pivot;
                selectedItemHighlight.anchorMin = selectedMenuItem[i].anchorMin;
                selectedItemHighlight.anchorMax = selectedMenuItem[i].anchorMax;
            }
        }
    }

    public void SelectedMenuItemUpdate(ref List<RectTransform> selectedMenuItem) 
    {
        if(menuItemIndexVerticalMax != 0) 
        {
            for (int i = 0; i < selectedMenuItem.Count; i++)
            {
                if (i == menuItemIndexVertical)
                {
                    selectedMenuItem[i].gameObject.SetActive(true);
                }
                else
                {
                    selectedMenuItem[i].gameObject.SetActive(false);
                }
            }
        }
        else 
        {
            selectedMenuItem[menuItemIndexVertical].gameObject.SetActive(true);
        }
    }

    public void SelectedMenuItemHideAll() 
    {

    }

    public void DpadNavigateHorizontalButtonPress(List<Button> buttonLeft, List<Button> buttonRight)
    {
        if (buttonLeft[menuItemIndexVertical] != null && buttonRight[menuItemIndexVertical] != null)
        {
            {
                if (Input.GetAxis("DpadHorizontal") < 0 && !_horizontalButtonDpadUpIsPressedDown)
                {
                    buttonRight[menuItemIndexVertical].onClick.Invoke();
                    print("dpadHorizontal right");
                    _horizontalButtonDpadUpIsPressedDown = true;
                }
                else if (Input.GetAxis("DpadHorizontal") > 0 && !_horizontalButtonDpadUpIsPressedDown)
                {
                    buttonLeft[menuItemIndexVertical].onClick.Invoke();
                    print("DpadHorizontal Left");
                    _horizontalButtonDpadUpIsPressedDown = true;
                }
                else if (Input.GetAxis("DpadHorizontal") == 0)
                {
                    _horizontalButtonDpadUpIsPressedDown = false;
                }
            }
        }
    }

    public void DpadNavigateHorizontalButtonsNavigation(List<Button> buttons)
    {
        if (Input.GetAxis("DpadHorizontal") < 0 && !_horizontalButtonDpadUpIsPressedDown)
        {
            menuItemIndexHorizontal += 1;
            print("dpadHorizontal right");
            if (menuItemIndexHorizontal >= menuItemIndexHorizontalMax)
            {
                menuItemIndexHorizontal = 0;
            }
                buttons[menuItemIndexHorizontal].onClick.Invoke();
            _horizontalButtonDpadUpIsPressedDown = true;
        }
        else if (Input.GetAxis("DpadHorizontal") > 0 && !_horizontalButtonDpadUpIsPressedDown)
        {
            menuItemIndexHorizontal -= 1;
            print("dpadHorizontal Left");
            if (menuItemIndexHorizontal == -1)
            {
                menuItemIndexHorizontal = menuItemIndexHorizontalMax -1;
            }
                buttons[menuItemIndexHorizontal].onClick.Invoke();
            _horizontalButtonDpadUpIsPressedDown = true;
        }
        else if (Input.GetAxis("DpadHorizontal") == 0)
        {
            _horizontalButtonDpadUpIsPressedDown = false;
        }
    }
}