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

public class PauseMenu : MonoBehaviour {

    Transform[] rightColumn;
    Transform[] leftColumn;
    GameObject canvas;
    PlayerCamera playerCamera;
    Sprite boxWCross, boxWOCross;
    List<Transform> rightList = new List<Transform>();
    List<Transform> leftList = new List<Transform>();
    int listIndex;
    int maxIndex, minIndex = 0;
    bool isRightColumn;
    bool delay = true;
    bool isInvertedH, isInvertedV;
    bool resumeGame = false;
    float counter = 0;
    SelectedColumn column;

    enum SelectedColumn
    {
        left,
        right
    }

    public void Initialize()
    {
        rightColumn = GameObject.Find("rightColumn").transform.GetComponentsInChildren<Transform>();
        leftColumn = GameObject.Find("leftColumn").transform.GetComponentsInChildren<Transform>();
        playerCamera = Camera.main.gameObject.GetComponent<PlayerCamera>();

        for (int i = 0; i < rightColumn.Length; i++)
        {
            if (rightColumn[i].transform.parent == GameObject.Find("rightColumn").transform)
            {
               rightList.Add(rightColumn[i]);
            }
        }
        for (int i = 0; i < leftColumn.Length; i++)
        {
            if (leftColumn[i].transform.parent == GameObject.Find("leftColumn").transform)
            {
                leftList.Add(leftColumn[i]);
            }
        }

        LoadSprites();

        canvas = GameObject.Find("PauseMenu");
        canvas.SetActive(false);
    }
    public void Activate()
    {
        canvas.SetActive(true);
        resumeGame = false;
    }

    public void Deactivate()
    {
        canvas.SetActive(false);
    }

    public bool UpdatePauseMenu()
    {

        //Select what you want to change



        switch (column)
        {
            case SelectedColumn.left:
                Column(leftList);
                if (Input.GetAxisRaw("Horizontal") == 1)
                {
                    listIndex = rightList.Count - 1;
                    for (int i = 0; i < leftList.Count; i++)
                    {
                        leftList[i].gameObject.GetComponent<Image>().color = Color.white;
                    }
                    rightList[listIndex].gameObject.GetComponent<Image>().color = Color.red;
                    column = SelectedColumn.right;
                }
                break;
            case SelectedColumn.right:
                if (Input.GetAxisRaw("Horizontal") == -1)
                {
                    listIndex = leftList.Count - 1;
                    for (int i = 0; i < rightList.Count; i++)
                    {
                        rightList[i].gameObject.GetComponent<Image>().color = Color.white;
                    }
                    leftList[listIndex].gameObject.GetComponent<Image>().color = Color.red;
                    column = SelectedColumn.left;
                }
                Column(rightList);
                break;
        }
        if (Input.GetKeyDown(KeyCode.Joystick1Button7) || resumeGame)
            return false;
        else
            return true;
    }

    void Column(List<Transform> _tList)
    {
        maxIndex = _tList.Count - 1;
        if (Input.GetAxisRaw("Vertical") < 0)
        {
            if (delay)
            {
                _tList[listIndex].gameObject.GetComponent<Image>().color = Color.white;
                listIndex++;
                if (listIndex > maxIndex)
                {
                    listIndex = maxIndex;
                }
                _tList[listIndex].gameObject.GetComponent<Image>().color = Color.red;
                delay = false;
            }
            else
            {
                counter += Time.deltaTime;
            }


            if (counter > 0.1f)
            {
                delay = true;
                counter = 0f;
            }
        }
        else if (Input.GetAxisRaw("Vertical") > 0)
        {
            if (delay)
            {
                _tList[listIndex].gameObject.GetComponent<Image>().color = Color.white;
                listIndex--;
                if (listIndex < minIndex)
                {
                    listIndex = minIndex;
                }
                _tList[listIndex].gameObject.GetComponent<Image>().color = Color.red;
                delay = false;
            }
            else
            {
                counter += Time.deltaTime;
            }

            if (counter > 0.1f)
            {
                delay = true;
                counter = 0f;
            }
        }

        if (Input.GetKeyDown(KeyCode.Joystick1Button0))
        {
            if (_tList[listIndex].name == "vInverted")
            {
                isInvertedV = !isInvertedV;
                if (isInvertedV)
                    _tList[listIndex].gameObject.GetComponent<Image>().sprite = boxWCross;
                else
                    _tList[listIndex].gameObject.GetComponent<Image>().sprite = boxWOCross;
            }

            else if(_tList[listIndex].name == "hInverted")
            {
                isInvertedH = !isInvertedH;
                if (isInvertedH)
                    _tList[listIndex].gameObject.GetComponent<Image>().sprite = boxWCross;
                else
                    _tList[listIndex].gameObject.GetComponent<Image>().sprite = boxWOCross;
            }


            if (_tList[listIndex].name == "resume game")
                resumeGame = true;
            if (_tList[listIndex].name == "restart game")
                SceneManager.LoadScene("Scene_main");

            SetSettings();
        }
    }


    void SetSettings()
    {
        playerCamera.SetInverted(isInvertedH, isInvertedV);
    }

    void LoadSprites()
    {
        boxWCross = Resources.Load<Sprite>("Menu/Box_W_Cross");
        boxWOCross = Resources.Load<Sprite>("Menu/Box_WO_Cross");
    }
}