using System.Collections;
using System.Collections.Generic;
using UltraCombos.Utility.Attributes;
using UnityEngine;

public enum Area
{
    LeftWall,
    RightWall,
    TopWall,
    Floor
}

public class FrozenScreenToWorldSpace : MonoBehaviour
{
    public static FrozenScreenToWorldSpace Instance
    {
        get
        {
            return instacnce;
        }
    }
    private static FrozenScreenToWorldSpace instacnce;

    public float width = 8;
    public float depth = 5;
    public float height = 3;
    public float blackLength = 0.89f;
    public float PixelsByMeter = 360;
    public float finalPixelsByMeter = 90;

    [Header("Debug")]
    [SerializeField, ReadOnly]
    Rect LeftWall;
    [SerializeField, ReadOnly]
    Rect TopWall;
    [SerializeField, ReadOnly]
    Rect RightWall;
    [SerializeField, ReadOnly]
    Rect Floor;

    Dictionary<Area, Rect> RenderTextureROIList = new Dictionary<Area, Rect>();

    private void Awake()
    {
        instacnce = this;
        InitailROISetting();
    }

    void InitailROISetting()
    {
        var totalWidth = height * 2 + width;
        var totalHeight = height + depth + blackLength;

        var nWidth = width / totalWidth;//normalized
        var nWidth2 = height / totalWidth;

        var nHeight = height / totalHeight;
        var nHeight2 = depth / totalHeight;

        TopWall = new Rect(nWidth2, 0, nWidth, nHeight);

        LeftWall = new Rect(0, nHeight, nWidth2, nHeight2);
        Floor = new Rect(nWidth2, nHeight, nWidth, nHeight2);
        RightWall = new Rect(nWidth + nWidth2, nHeight, nWidth2, nHeight2);

        RenderTextureROIList = new Dictionary<Area, Rect>()
        {
            [Area.LeftWall] = LeftWall,
            [Area.RightWall] = RightWall,
            [Area.TopWall] = TopWall,
            [Area.Floor] = Floor,
        };
    }

    // public Vector2 GetFinalScreenPos(Area area, Vector2 wallROI)
    // {
    //     if (!RenderTextureROIList.ContainsKey(area))
    //         return Vector2.zero;
    //     Rect textureROI = RenderTextureROIList[area];
    //     Vector2 currenPos = Vector2.zero;
    //     switch (area)
    //     {
    //         case Area.LeftWall:
    //             currenPos = Rect.NormalizedToPoint(textureROI, new Vector2(1 - wallROI.y, 1 - wallROI.x));
    //             break;
    //         case Area.RightWall:
    //             currenPos = Rect.NormalizedToPoint(textureROI, new Vector2(wallROI.y, 1 - wallROI.x));
    //             break;
    //         case Area.TopWall:
    //             currenPos = Rect.NormalizedToPoint(textureROI, new Vector2(wallROI.x, 1 - wallROI.y));
    //             break;
    //     }
    //     currenPos = new Vector2(currenPos.x * Screen.width, (1 - currenPos.y) * Screen.height);
    //     return currenPos;
    // }

    public Vector2 GetWallRoiFromPosition(Area area, Vector3 position)
    {
        position -= transform.position;
        Vector2 roi = Vector2.zero;
        switch (area)
        {
            case Area.TopWall:
                roi.x = (position.x + width * 0.5f) / width;
                roi.y = position.y / height;
                break;
            case Area.LeftWall:
                roi.x = (position.z + depth * 0.5f) / depth;
                roi.y = position.y / height;
                break;
            case Area.RightWall:
                roi.x = (position.z + depth * 0.5f) / depth;
                roi.y = position.y / height;
                break;
        }
        // Debug.Log($"{area} {position.ToString()} {roi.ToString()}");
        return roi;
    }

    public Vector3 Position { get { return transform.position; } }
}