using System.Collections;
using System.Collections.Generic;
using System.Linq;
using BlueWater.Items;
using BlueWater.Tycoons;
using DG.Tweening;
using Sirenix.OdinInspector;
using TMPro;
using UnityEngine;
using UnityEngine.Pool;
using UnityEngine.UI;

namespace BlueWater
{
    public class LiquidController : MonoBehaviour
    {
        #region Variables

        [Title("컴포넌트")]
        [SerializeField]
        private GameObject _liquidPanel;

        [SerializeField]
        private GameObject _shaker;
        
        [SerializeField]
        private Renderer _renderTexture;
        
        [SerializeField]
        private Renderer _liquidRenderer;
        
        [SerializeField]
        private Collider2D _reachedCollider;

        [SerializeField]
        private TMP_Text _amountText;

        [SerializeField]
        private Image _completeCocktailImage;

        [SerializeField]
        private TMP_Text _completeText;
        
        [Title("스폰 데이터")]
        [SerializeField, Required]
        private Transform _spawnTransform;

        [SerializeField]
        private Transform _spawnLocation;

        [SerializeField]
        private Vector3 _pushDirection;

        [SerializeField]
        private float _pushPower;
        
        [Title("액체")]
        [SerializeField, Required, Tooltip("액체 프리팹")]
        private Liquid _liquidObject;

        [SerializeField, Tooltip("초당 생성되는 액체 수(ml)")]
        private int _liquidsPerSecond = 80;

        [SerializeField]
        private int _maxLiquidCount = 400;

        [SerializeField, Range(0f, 1f), Tooltip("목표 색상으로 변경되는데 걸리는 시간")]
        private float _colorLerpSpeed = 0.5f;

        [SerializeField, Range(1f, 5f), Tooltip("목표 색상 * 밝기")]
        private float _colorIntensity = 2f;
        
        [Title("오브젝트 풀링")]
        [SerializeField, Tooltip("오브젝트 풀링 최대 개수")]
        private int _objectPoolCount = 1000;
        
        [Title("패널")]
        [SerializeField]
        private float _moveDuration = 0.5f;
        
        [Title("실시간 정보")]
        [SerializeField]
        private Barrel _currentBarrel;
        
        private IObjectPool<Liquid> _objectPool;
        private List<Liquid> _activeLiquids = new();
        private Dictionary<LiquidData, int> _liquidDataCounts = new(7);
        private Material _instanceMaterial;
        private Tween _showTween;
        private Tween _hideTween;

        private bool _isShowingPanel;
        private bool _isPouring;
        private float _startTime = float.PositiveInfinity;
        private int _instanceLiquidCount;
        private float _currentLiquidAmount;
        private float _liquidReachedTime;
        private float _timeInterval;
        private Color _currentMixedColor = Color.black;
        private Color _targetColor;

        // Hashes
        private static readonly int _liquidAmountHash = Shader.PropertyToID("_LiquidAmount");
        private static readonly int _liquidColorHash = Shader.PropertyToID("_LiquidColor");
        private static readonly int _renderTextureColorHash = Shader.PropertyToID("_Color");

        #endregion

        // Unity events
        #region Unity events

        private void Awake()
        {
            _objectPool = new ObjectPool<Liquid>(CreateObject, OnGetObject, OnReleaseObject, OnDestroyObject, maxSize: _objectPoolCount);

            _hideTween = _liquidPanel.transform.DOMoveX(-150f, _moveDuration).Pause()
                .SetAutoKill(false);

            _showTween = _liquidPanel.transform.DOMoveX(-249f, _moveDuration).Pause()
                .SetAutoKill(false);
        }

        private void Start()
        {
            TycoonEvents.OnLiquidRegionEntered += ShowPanel;
            TycoonEvents.OnLiquidRegionExited += HidePanel;
            
            _instanceMaterial = Instantiate(_liquidRenderer.material);
            _liquidRenderer.material = _instanceMaterial;
            
            _instanceMaterial.SetFloat(_liquidAmountHash, 0f);
            _timeInterval = 1f / _liquidsPerSecond;
            _shaker.SetActive(true);
            _amountText.enabled = true;
            _completeCocktailImage.enabled = false;
            _completeText.enabled = false;
            _instanceLiquidCount = 0;
            SetCurrentAmount(0f);
        }

        private void Update()
        {
            if (_isPouring)
            {
                // 현재 술의 재고가 없을 때
                if (!_currentBarrel.CanConsume(1))
                {
                    InActiveIsPouring();
                    return;
                }
                
                // 술이 완성되었을 때
                if (_instanceLiquidCount >= _maxLiquidCount)
                {
                    StartCoroutine(nameof(CompleteCocktail));
                    return;
                }
                
                if (Time.time - _startTime >= _timeInterval)
                {
                    _objectPool.Get();

                    if (!_liquidDataCounts.TryAdd(_currentBarrel.GetLiquidData(), 1))
                    {
                        _liquidDataCounts[_currentBarrel.GetLiquidData()] += 1;
                    }

                    _currentBarrel.Consume(1);
                    _startTime = Time.time;
                }
            }

            if (_liquidReachedTime + _colorLerpSpeed >= Time.time)
            {
                _currentMixedColor = Color.Lerp(_currentMixedColor, _targetColor, _colorLerpSpeed * Time.deltaTime);
                _instanceMaterial.SetColor(_liquidColorHash, _currentMixedColor * _colorIntensity);
            }
        }

        private void OnDestroy()
        {
            TycoonEvents.OnLiquidRegionEntered -= ShowPanel;
            TycoonEvents.OnLiquidRegionExited -= HidePanel;
        }

        #endregion

        // Object pooling system
        #region Object pooling system

        private Liquid CreateObject()
        {
            var instance = Instantiate(_liquidObject, _spawnTransform.position, Quaternion.identity, _spawnLocation);
            instance.SetManagedPool(_objectPool);
            return instance;
        }

        private void OnGetObject(Liquid liquid)
        {
            liquid.transform.position = _spawnTransform.position;
            liquid.transform.rotation = Quaternion.identity;
            liquid.gameObject.SetActive(true);
            _instanceLiquidCount++;
            var liquidColor = _currentBarrel.GetLiquidData().Color;
            liquid.Initialize(this, _reachedCollider, liquidColor, _pushDirection.normalized * _pushPower);
            if (_renderTexture && _renderTexture.material.GetColor(_renderTextureColorHash) != liquidColor)
            {
                _renderTexture.material.SetColor(_renderTextureColorHash, liquidColor);
            }
            _activeLiquids.Add(liquid);
        }

        private void OnReleaseObject(Liquid liquid)
        {
            liquid.gameObject.SetActive(false);
            _activeLiquids.Remove(liquid);
        }

        private void OnDestroyObject(Liquid liquid)
        {
            Destroy(liquid.gameObject);
            _activeLiquids.Remove(liquid);
        }

        #endregion

        // Custom methods
        #region Custom methods
        
        /// <summary>
        /// 술 제조 과정 초기화 함수
        /// </summary>
        public void ReleaseAllObject()
        {
            // 리스트 삭제는 뒤에서부터 해야 오류가 없음
            for (var i = _activeLiquids.Count - 1; i >= 0; i--)
            {
                _activeLiquids[i].Destroy();
            }
            
            _liquidDataCounts.Clear();
            _instanceLiquidCount = 0;
            SetCurrentAmount(0f);
            _instanceMaterial.SetFloat(_liquidAmountHash, 0f);
        }

        /// <summary>
        /// 현재 상호작용 중인 Barrel 연동
        /// </summary>
        /// <param name="barrel"></param>
        public void SetBarrel(Barrel barrel)
        {
            _currentBarrel = barrel;
        }

        public void ActiveIsPouring()
        {
            if (_instanceLiquidCount == 0)
            {
                _shaker.SetActive(true);
                _amountText.enabled = true;
                _completeCocktailImage.enabled = false;
                _completeText.enabled = false;
                _currentMixedColor = _currentBarrel.GetLiquidData().Color;
                _instanceMaterial.SetColor(_liquidColorHash, _currentMixedColor * _colorIntensity);
            }
            
            _startTime = Time.time;
            _isPouring = true;
        }

        public void InActiveIsPouring()
        {
            _isPouring = false;
        }

        private void SetCurrentAmount(float value)
        {
            _currentLiquidAmount = value;

            if (_amountText)
            {
                var percent = (int)(_currentLiquidAmount / _maxLiquidCount * 100);
                _amountText.text = $"{percent}%";
            }
            else
            {
                if (_amountText.enabled)
                {
                    _amountText.enabled = false;
                }
            }
        }

        /// <summary>
        /// 술을 완성한 경우
        /// </summary>
        private IEnumerator CompleteCocktail()
        {
            InActiveIsPouring();

            yield return new WaitUntil(() => _currentLiquidAmount >= _maxLiquidCount);
            
            var currentCocktailIngredients = new List<CocktailIngredient>(7);
            foreach (var element in _liquidDataCounts)
            {
                var idx = element.Key.Idx;
                var amount = element.Value;
                currentCocktailIngredients.Add(new CocktailIngredient(idx, amount));
            }
            
            // ItemManager를 통해 모든 CocktailData 가져오기
            var cocktailDatas = ItemManager.Instance.GetCocktailDatas();
            CocktailData matchingCocktail = null;
            
            // 모든 칵테일 데이터를 순회하면서 조건에 맞는 칵테일 찾기
            foreach (var cocktailData in cocktailDatas.Values)
            {
                var validIngredients = cocktailData.GetValidIngredients();

                // 조건 1: 재료 개수 동일 체크
                if (validIngredients.Count != currentCocktailIngredients.Count)
                    continue;

                var allIngredientsMatch = true;

                // 현재 음료 재료를 하나씩 validIngredients와 비교
                foreach (var currentIngredient in currentCocktailIngredients)
                {
                    // 동일한 Idx를 가진 재료가 있는지 찾음
                    var matchingValidIngredient = validIngredients.FirstOrDefault(ingredient => ingredient.Idx == currentIngredient.Idx);

                    // 만약 Idx가 일치하는 재료가 없으면 조건 불충족
                    if (matchingValidIngredient == null)
                    {
                        allIngredientsMatch = false;
                        break;
                    }

                    // 조건 2: Amount 값이 RatioRange에 따른 오차 범위 내에 있는지 체크
                    var validAmount = matchingValidIngredient.Amount;
                    //var maxLiquidCount = cocktailData.GetCocktailAmount(validIngredients);
                    var range = _maxLiquidCount / 100 * cocktailData.RatioRange;
                    var minAmount = validAmount - range;
                    var maxAmount = validAmount + range;

                    if (currentIngredient.Amount < minAmount || currentIngredient.Amount > maxAmount)
                    {
                        allIngredientsMatch = false;
                        break;
                    }
                }

                // 조건이 모두 만족하면 매칭되는 칵테일을 찾음
                if (allIngredientsMatch)
                {
                    matchingCocktail = cocktailData;
                    break;
                }
            }

            // 조건에 만족하는 칵테일이 없음
            if (matchingCocktail == null)
            {
                matchingCocktail = ItemManager.Instance.GetCocktailDataByIdx("Cocktail000");
                _completeText.text = "실패";
            }
            else
            {
                _completeText.text = $"성공!\n{matchingCocktail.Name}";
            }
            
            // TODO : 음료 제조 성공, 실패 연출 추가
            _shaker.SetActive(false);
            _amountText.enabled = false;
            _completeCocktailImage.sprite = matchingCocktail.Sprite;
            _completeCocktailImage.enabled = true;
            _completeText.enabled = true;
            
            // 1. 플레이어 음료 들기
            TycoonEvents.OnCocktailCompleted?.Invoke(matchingCocktail);

            yield return new WaitForSeconds(1f);

            HidePanel();
        }
        
        /// <summary>
        /// 사용된 색상의 비율에 맞게 색을 혼합시키는 함수
        /// </summary>
        private Color MixColorsByTime()
        {
            var totalCounts = _liquidDataCounts.Values.Sum();

            var mixedColor = Color.black;

            foreach (var element in _liquidDataCounts)
            {
                var color = element.Key.Color;
                var count = element.Value;
                var ratio = count / (float)totalCounts;

                mixedColor += color * ratio;
            }
            
            mixedColor.a = 1f;

            return mixedColor;
        }
        
        /// <summary>
        /// 액체가 특정 오브젝트에 충돌했을 때, 실행해야하는 과정
        /// </summary>
        public void OnLiquidReached()
        {
            _liquidReachedTime = Time.time;
            SetCurrentAmount(++_currentLiquidAmount);
            var liquidAmount = Mathf.Clamp(_currentLiquidAmount / _maxLiquidCount, 0f, 1f);
            _instanceMaterial.SetFloat(_liquidAmountHash, liquidAmount);
            _targetColor = MixColorsByTime();

            if (liquidAmount >= 1f)
            {
                InActiveIsPouring();
            }
        }

        public void ShowPanel()
        {
            if (_isShowingPanel) return;
            
            _isShowingPanel = true;
            _hideTween.Pause();
            _showTween.Restart();
        }

        public void HidePanel()
        {
            if (!_isShowingPanel) return;
            
            _isShowingPanel = false;
            _showTween.Pause();
            _hideTween.Restart();
        }

        #endregion
    }
}