using DG.Tweening;
using UnityEngine;
using System.Collections.Generic;
using cfg;
using asap.core;
using PlayFab.GroupsModels;

public class CameraCtrl : MonoBehaviour
{
    private Transform _focus;
    private float _blockDepth, _skyLoopTriggerheight, _skyLoopOffsetDelta;
    private MeshRenderer _sky;
    private Material _skyMat;
    private InfiniteBuildingConf _cfg;
    private InfiniteBuildingData _data;
    private List<int> _lvlThresh;
    private List<float> _depth, _yOffset;

    private TbConstructionHeightEvent _tableHeightEvent;
    private readonly string MatOffsetKey = "_Offset";

    //[SerializeField]private CinemachineVirtualCamera _cam;
/*    public Vector3 LowerLimit
    {
        get
        {
            Vector3 pos = Camera.main.ViewportToWorldPoint(
                new Vector3(0.5f, 0, _blockDepth - transform.position.z));
            //Debug.Log(pos);
            return pos;
        }
    }
*/
    public float CamDepth
    {
        get { return GetDataByIBLvl<float>(_data.Lvl, _lvlThresh, _depth); }
    }

    public void Init(Transform focus, InfiniteBuildingConf cfg, MeshRenderer sky,
        InfiniteBuildingData data)
    {
        _tableHeightEvent = GContext.container.Resolve<Tables>().TbConstructionHeightEvent;
        _focus = focus;
        _blockDepth = cfg.blockDepth;
        _sky = sky;
        _skyMat = sky.sharedMaterial;
        _skyLoopTriggerheight = cfg.skyLoopTriggerHeight;
        _skyLoopOffsetDelta = cfg.skyLoopOffsetDelta;
        if (focus.position.y >= cfg.skyLoopTriggerHeight)
        {
            Vector3 pos = _sky.transform.position;
            _sky.transform.position = new Vector3(pos.x, transform.position.y, pos.z);
        }

        _cfg = cfg;
        _data = data;
        _lvlThresh = new List<int>();
        _depth = new List<float>();
        _yOffset = new List<float>();
        foreach (var c in _tableHeightEvent.DataList)
        {
            _lvlThresh.Add(c.Height);
            _depth.Add(c.CameraDepth);
            _yOffset.Add(c.CameraYOffest);
        }

        transform.position = new Vector3(0,
            focus.position.y + GetDataByIBLvl<float>(_data.Lvl, _lvlThresh, _yOffset),
            focus.position.z - CamDepth);
        if (_focus.position.y >= _skyLoopTriggerheight)
            _sky.transform.position =
                new Vector3(0, transform.position.y, _sky.transform.position.z);
        _skyMat.SetVector(MatOffsetKey, Vector4.zero);
    }

    public void FollowFocus(float duration = 0.5f)
    {
        transform.DOMove(new Vector3(0,
            _focus.position.y + GetDataByIBLvl<float>(_data.Lvl, _lvlThresh, _yOffset),
            transform.position.z), duration);
        if (_focus.position.y < _skyLoopTriggerheight)
            return;
        _sky.transform.DOMove(new Vector3(0, transform.position.y, _sky.transform.position.z),
            duration);
        //Vector2 oldOffset = _skyMat.GetTextureOffset("_Texture2D");
        //Debug.Log(oldOffset);
        //_skyMat.DOOffset(oldOffset + Vector2.up * _skyLoopOffsetDelta, duration);
        Vector2 offset = _skyMat.GetVector(MatOffsetKey);
        float t = 0;
        DOTween.To(() => t, (value) => t = value, _skyLoopOffsetDelta, duration)
            .OnUpdate(() => _skyMat.SetVector(MatOffsetKey, offset + t * Vector2.up)).OnComplete(() =>
            {
                var v = _skyMat.GetVector(MatOffsetKey);
                while (v.y > 0.5f) v.y -= 1f;
                while (v.y < -0.5f) v.y += 1f;
                _skyMat.SetVector(MatOffsetKey, v);
            });

    }

    private T GetDataByIBLvl<T>(int lvl, List<int> lvlThresh, List<T> dataList)
    {
        if (lvlThresh.Count != dataList.Count)
        {
            Debug.LogError($"lvlTresh count {lvlThresh.Count} does not" +
                           $"match dataList count {dataList.Count}");
            return default(T);
        }

        for (int i = 0; i < lvlThresh.Count - 1; i++)
        {
            if (lvl < lvlThresh[i + 1])
                return dataList[i];
        }

        return dataList[^1];
    }
}