using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class DrawingsInventoryManager : MonoBehaviour
{
    public GameObject Inventory;

    [Header("Selected Item UI")]
    public Transform SelectedItemUI;

    [Header("Cell Icons")]
    public Transform Cell_Icon;
    public Transform Cell1_Icon;
    public Transform Cell2_Icon;
    public Transform Cell3_Icon;

    [Header("Drawings Icons")]
    public GameObject LetterIcon;
    public GameObject DrawingBathroom;
    public GameObject DrawingByeMom;
    public GameObject DrawingReveal;

    [HideInInspector] public bool _inventoryOpen;

    public bool Element0Selected;
    public bool Element1Selected;
    public bool Element2Selected;
    public bool Element3Selected;

    public bool Element0Taken;
    public bool Element1Taken;
    public bool Element3Taken;
    public bool Element4Taken;

    public int[] Cell_ItemID;
    public int index;
    public List<int> ItemsIDStorage;
    public List<GameObject> IconsStorage;

    private static DrawingsInventoryManager _instance;
    public static DrawingsInventoryManager GetInstance() { return _instance;}

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

    private void Update()
    {


        if (Input.GetKeyDown(KeyCode.I)) //If key pressed:
        {
            if (!_inventoryOpen) //If inventory is not open:
            {
                DisplayDrawingsInventory();
            }
            else //If inventory is open:
            {
                HideDrawingsInventory();
            }
        }

        if (_inventoryOpen) //If inventory is open:
        {
            DrawingInput(); //Input to select item from inventory:
        }

        UpdateItems();
    }

    public void DrawingInput() 
    {
        if (Input.GetKeyDown(KeyCode.Alpha1)) 
        {
            Element0Selected = true;
            Element1Selected = false;
            Element2Selected = false;
            Element3Selected = false;
            SelectedItemUI.position = Cell_Icon.position;
        }
        if (Input.GetKeyDown(KeyCode.Alpha2))
        {
            Element0Selected = false;
            Element1Selected = true;
            Element2Selected = false;
            Element3Selected = false;
            SelectedItemUI.position = Cell1_Icon.position;
        }
        if (Input.GetKeyDown(KeyCode.Alpha3))
        {
            Element0Selected = false;
            Element1Selected = false;
            Element2Selected = true;
            Element3Selected = false;
            SelectedItemUI.position = Cell2_Icon.position;
        }
        if (Input.GetKeyDown(KeyCode.Alpha4))
        {
            Element0Selected = false;
            Element1Selected = false;
            Element2Selected = false;
            Element3Selected = true;
            SelectedItemUI.position = Cell3_Icon.position;
        }
    }

    public void DisplayDrawingsInventory() 
    {
        Element0Selected = true;
        SelectedItemUI.position = Cell_Icon.position;
        _inventoryOpen = true;
        Inventory.SetActive(true);
    }

    public void HideDrawingsInventory() 
    {
        _inventoryOpen = false;
        Inventory.SetActive(false);
    }

    void UpdateItems()
    {
        if (LampsSequence.GetInstance().UpdateItemIndex)
        {
            //CountItems.Add(index);
            Cell_ItemID[index] = LampsSequence.GetInstance().ItemID;

            #region Cell0
            if (index == 0)
            {
                if (Cell_ItemID[0] == 0) //Letter in Cell0
                {
                    LetterIcon.SetActive(true);
                    LetterIcon.transform.localPosition = Cell_Icon.localPosition;
                    //#region Stack Item
                    //StackItem(0,0,LetterIcon);
                    //#endregion
                }
                else if (Cell_ItemID[0] == 1) //DrawingBathroom in Cell0
                {
                    DrawingBathroom.SetActive(true);
                    DrawingBathroom.transform.localPosition = Cell_Icon.localPosition;
                    //#region Stack Item
                    //StackItem(0, 1, DrawingBathroom);
                    //#endregion
                }
                else if (Cell_ItemID[0] == 2) //DrawingByeMom in Cell0
                {
                    DrawingByeMom.SetActive(true);
                    DrawingByeMom.transform.localPosition = Cell_Icon.localPosition;
                    //#region Stack Item
                    //StackItem(0, 2, DrawingByeMom);
                    //#endregion
                }
                else if (Cell_ItemID[0] == 3) //DrawingReveal in Cell0
                {
                    DrawingReveal.SetActive(true);
                    DrawingReveal.transform.localPosition = Cell_Icon.localPosition;
                    //#region Stack Item
                    //StackItem(0, 3, DrawingReveal);
                    //#endregion
                }
                print("Cell0 Updated");
            }
            #endregion

            #region Cell1
            if (index == 1)
            {
                if (Cell_ItemID[1] == 0) //Letter in Cell1
                {
                    LetterIcon.SetActive(true);
                    LetterIcon.transform.localPosition = Cell1_Icon.localPosition;
                }
                else if (Cell_ItemID[1] == 1) //DrawingBathroom in Cell1
                {
                    DrawingBathroom.SetActive(true);
                    DrawingBathroom.transform.localPosition = Cell1_Icon.localPosition;
                }
                else if (Cell_ItemID[1] == 2) //DrawingByeMom in Cell1
                {
                    DrawingByeMom.SetActive(true);
                    DrawingByeMom.transform.localPosition = Cell1_Icon.localPosition;
                }
                else if (Cell_ItemID[1] == 3) //DrawingReveal in Cell1
                {
                    DrawingReveal.SetActive(true);
                    DrawingReveal.transform.localPosition = Cell1_Icon.localPosition;
                }
                print("Cell1 Updated");
            }
            #endregion

            #region Cell2
            if (index == 2)
            {
                if (Cell_ItemID[2] == 0) //Letter in Cell2
                {
                    LetterIcon.SetActive(true);
                    LetterIcon.transform.localPosition = Cell2_Icon.localPosition;
                }
                else if (Cell_ItemID[2] == 1) //DrawingBathroom in Cell2
                {
                    DrawingBathroom.SetActive(true);
                    DrawingBathroom.transform.localPosition = Cell2_Icon.localPosition;
                }
                else if (Cell_ItemID[2] == 2) //DrawingByeMom in Cell2
                {
                    DrawingByeMom.SetActive(true);
                    DrawingByeMom.transform.localPosition = Cell2_Icon.localPosition;
                }
                else if (Cell_ItemID[2] == 3) //DrawingReveal in Cell2
                {
                    DrawingReveal.SetActive(true);
                    DrawingReveal.transform.localPosition = Cell2_Icon.localPosition;
                }
                print("Cell2 Updated");
            }
            #endregion

            #region Cell3
            if (index == 3)
            {
                if (Cell_ItemID[3] == 0) //Letter in Cell3
                {
                    LetterIcon.SetActive(true);
                    LetterIcon.transform.localPosition = Cell3_Icon.localPosition;
                }
                else if (Cell_ItemID[3] == 1) //DrawingBathroom in Cell3
                {
                    DrawingBathroom.SetActive(true);
                    DrawingBathroom.transform.localPosition = Cell3_Icon.localPosition;
                }
                else if (Cell_ItemID[3] == 2) //DrawingByeMom in Cell3
                {
                    DrawingByeMom.SetActive(true);
                    DrawingByeMom.transform.localPosition = Cell3_Icon.localPosition;
                }
                else if (Cell_ItemID[3] == 3) //DrawingReveal in Cell3
                {
                    DrawingReveal.SetActive(true);
                    DrawingReveal.transform.localPosition = Cell3_Icon.localPosition;
                }
                print("Cell3 Updated");
            }
            #endregion
            index += 1;
            LampsSequence.GetInstance().UpdateItemIndex = false;
        }


    }

    public void StackItem(int ElementID, int ItemID, GameObject ItemIcon) 
    {
        ItemsIDStorage.Insert(ElementID, ItemID);
        IconsStorage.Insert(ElementID, ItemIcon);
  
    }

    public void UseItem(GameObject ItemIcon) 
    {
        ItemIcon.SetActive(false);
        index -= 1;
    }
    
}