using System;
using System.Collections;
using System.Collections.Generic;
using NWH.DWP2.WaterData;
using NWH.DWP2.WaterObjects;
using Sirenix.OdinInspector;
using UnityEngine;
using Random = UnityEngine.Random;

// ReSharper disable once CheckNamespace
namespace BlueWaterProject
{
    public enum EscapeMode
    {
        NONE = -1,
        STRAIGHT,
        ZIGZAG,
        TOWARDS
    }
    
    public class Boids : MonoBehaviour
    {
        // 군집(떼) 설정
        [Title("군집(떼) 설정")]
        [Tooltip("Boid 프리팹")]
        [SerializeField] private Boid boidPrefab;
        
        [Range(1, 1000)]
        [Tooltip("생성할 개체 수")]
        [SerializeField] private int boidCount = 5;
        
        [field: Tooltip("개체의 랜덤 속도 값\nx == Min\ny == Max")]
        [field: SerializeField] public Vector2 RandomSpeedRange { get; private set; } = new(5f, 10f);
        
        [Range(5, 100)]
        [Tooltip("개체 생성 범위")]
        [SerializeField] private float spawnRange = 10;
        
        [Tooltip("자동 재생성 기능 여부")]
        [SerializeField] private bool isAutoRespawn = true;

        [Tooltip("자동 재생성하는데 걸리는 시간")]
        [ShowIf("@isAutoRespawn")]
        [SerializeField] private Vector2 randomRespawnTime = new(10f, 20f);

        [field: Range(0, 10)]
        [field: Tooltip("응집력(뭉치기) 가중치")]
        [field: SerializeField] public float CohesionWeight { get; private set; } = 1;
        
        [field: Range(0, 10)]
        [field: Tooltip("정렬(같은 방향) 가중치")]
        [field: SerializeField] public float AlignmentWeight { get; private set; } = 1;
        
        [field: Range(0, 10)]
        [field: Tooltip("분리(서로 회피) 가중치")]
        [field: SerializeField] public float SeparationWeight { get; private set; } = 1;

        [field: Range(0, 100)]
        [field: Tooltip("경계 범위 내 행동 가중치")]
        [field: SerializeField] public float BoundsWeight { get; private set; } = 1;
        
        [field: Range(0, 100)]
        [field: Tooltip("장애물 회피 가중치")]
        [field: SerializeField] public float ObstacleWeight { get; private set; } = 10;
        
        [field: Range(0, 10)]
        [field: Tooltip("자아(독립행동) 가중치")]
        [field: SerializeField] public float EgoWeight { get; private set; } = 1;
        
        // 도주 기능 설정
        [Title("도주 기능 설정")]
        [SerializeField] private bool isDrawGizmos = true;
        
        [Tooltip("타겟 인식 범위")]
        [SerializeField] private float viewRadius = 10f;
        
        [Tooltip("이동속도")]
        [SerializeField] private float moveSpd = 500f;
        
        [Tooltip("랜덤 방향으로 도주 여부")]
        [SerializeField] private bool isRandomAngle = true;
        
        [ShowIf("@isRandomAngle")]
        [Tooltip("도망가는 방향의 랜덤 각도")]
        [SerializeField] private float randomAngle = 180f;
        
        [Tooltip("타겟을 재검색하는 시간")]
        [SerializeField] private float rescanTime = 0.5f;
        
        [Tooltip("도망치는 시간")]
        [SerializeField] private float escapeTime = 10f;
        
        [Tooltip("도망치면서 방향 전환 여부")]
        [SerializeField] private bool isDirectionChange;
        
        [ShowIf("@isDirectionChange")]
        [Tooltip("도망치면서 방향 전환하는데 걸리는 시간")]
        [SerializeField] private Vector2 randomDirectionChangeInterval = new(0.5f, 3f);
        
        [Tooltip("도주 방식")]
        [SerializeField] private EscapeMode escapeMode = EscapeMode.STRAIGHT;
        
        // ZIGZAG
        [Title("ZIGZAG")]
        [ShowIf("@escapeMode == EscapeMode.ZIGZAG")]
        [Tooltip("흔들림의 정도")]
        [SerializeField] private Vector2 randomZigzagAmplitude = new(0.1f, 1f);
        
        [ShowIf("@escapeMode == EscapeMode.ZIGZAG")]
        [Tooltip("흔들림의 주기")]
        [SerializeField] private Vector2 randomZigzagFrequency = new(0.1f, 1f);
        
        // Extensions Data
        [Title("Extensions Data")]
        [Tooltip("경계 범위 기능 여부")]
        [SerializeField] private bool showBounds;
        
        [Tooltip("FishSpot")]
        [SerializeField] private Transform fishSpot;
        
        [Tooltip("물 표면 이펙트 기능 여부")]
        [SerializeField] private bool showWaterEffect = true;

        [ShowIf("@showWaterEffect")]
        [SerializeField] private bool isUsingDynamicHeight;
        
        [ShowIf("@showWaterEffect && !isUsingDynamicHeight")]
        [SerializeField] private Vector3 fishSpotOffset = new(0, 0.5f, 0);
        
        [SerializeField] private GameObject contentUiPrefab;
        
        [field: SerializeField] public MeshRenderer BoundMeshRenderer { get; private set; }
        
        // 디버깅
        [Title("디버깅")]
        [SerializeField] private List<Boid> boidList;
        [SerializeField] private Collider[] hitColliders = new Collider[MAX_HIT_NUM];
        [SerializeField] private LayerMask targetLayer;
        [SerializeField] private LayerMask waterLayer;

        private Vector3 spawnPos;
        private Coroutine findTargetCoroutine;
        private Coroutine escapeCoroutine;
        private WaitForSeconds findCoroutineTime;
        private ItemUiController contentUi;
        private Transform itemsLoot;
        private StylizedWaterDataProvider stylizedWaterDataProvider;
        private WaterObject waterObject;
        
        private const int MAX_HIT_NUM = 3;

        private void OnValidate()
        {
            if (BoundMeshRenderer)
            {
                BoundMeshRenderer.enabled = showBounds;
            }
            
            findCoroutineTime = new WaitForSeconds(rescanTime);
        }
        
        private void OnDrawGizmosSelected()
        {
            if (!isDrawGizmos || !fishSpot) return;

            var centerPos = Vector3.zero;
            if (Application.isPlaying)
            {
                centerPos = fishSpot.position;
            }
            else
            {
                if (Physics.Raycast(BoundMeshRenderer.transform.position, Vector3.up, out var hit, 
                        float.MaxValue,waterLayer))
                {
                    centerPos = hit.point + fishSpotOffset;
                }
            }
            
            Gizmos.color = Color.red;
            Gizmos.DrawWireSphere(centerPos, viewRadius);
        }

        private void Start()
        {
            CreateBoids();
        }

        private void FixedUpdate()
        {
            ShowFishSpot();
        }

        public void CreateBoids()
        {
            boidList = new List<Boid>(boidCount);
            hitColliders = new Collider[MAX_HIT_NUM];
            findCoroutineTime = new WaitForSeconds(rescanTime);
            BoundMeshRenderer = GetComponentInChildren<MeshRenderer>();
            BoundMeshRenderer.enabled = showBounds;
            spawnPos = BoundMeshRenderer.transform.position;
            targetLayer = LayerMask.GetMask("Player");
            waterLayer = LayerMask.GetMask("Water");
            
            var myTransform = transform;
            for (var i = 0; i < boidCount; i++)
            {
                var randomPos = Random.insideUnitSphere * spawnRange;
                var randomRotation = Quaternion.Euler(0, Random.Range(0, 360f), 0);
                var boid = Instantiate(boidPrefab, myTransform.position + randomPos, randomRotation, myTransform);
                boid.Init(this, Random.Range(RandomSpeedRange.x, RandomSpeedRange.y));
                boidList.Add(boid);
            }

            if (fishSpot)
            {
                findTargetCoroutine ??= StartCoroutine(FindTargetCoroutine());

                if (showWaterEffect)
                {
                    var screenPos = CameraManager.Inst.MainCam.WorldToScreenPoint(fishSpot.position);
                    itemsLoot = UiManager.Inst.OceanUi.MainCanvas.transform.Find("ItemsLoot");
                    contentUi = Instantiate(contentUiPrefab, screenPos, Quaternion.identity, itemsLoot).GetComponent<ItemUiController>();
                    contentUi.Init(fishSpot);
                }
            }
        }
        
        private IEnumerator FindTargetCoroutine()
        {
            while (true)
            {
                var size = Physics.OverlapSphereNonAlloc(fishSpot.position, viewRadius, hitColliders, targetLayer);
                for (var i = 0; i < size; i++)
                {
                    if (hitColliders[i] == null || !hitColliders[i].CompareTag("ShipPlayer")) continue;

                    findTargetCoroutine = null;
                    escapeCoroutine = StartCoroutine(EscapeCoroutine(hitColliders[i]));
                    yield break;
                }
                yield return findCoroutineTime;
            }
        }
        
        private IEnumerator EscapeCoroutine(Collider targetCollider)
        {
            var currentDirectionChangeInterval = isDirectionChange ?
                Random.Range(randomDirectionChangeInterval.x, randomDirectionChangeInterval.y) : 0;
            var rotatedEscapeDirection = CalculateEscapeDirection(targetCollider.transform.position);
            var currentZigzagFrequency = Random.Range(randomZigzagFrequency.x, randomZigzagFrequency.y);
            var currentZigzagAmplitude = Random.Range(randomZigzagAmplitude.x, randomZigzagAmplitude.y);
            
            var time = 0f;
            var directionChangeTime = 0f;
            while (time < escapeTime)
            {
                time += Time.deltaTime;

                if (isDirectionChange)
                {
                    directionChangeTime += Time.deltaTime;
                    
                    if (directionChangeTime >= currentDirectionChangeInterval)
                    {
                        rotatedEscapeDirection = CalculateEscapeDirection(targetCollider.transform.position);
                        directionChangeTime = 0f;
                        currentDirectionChangeInterval = Random.Range(randomDirectionChangeInterval.x,randomDirectionChangeInterval.y);
                    
                        if (escapeMode == EscapeMode.ZIGZAG)
                        {
                            currentZigzagFrequency = Random.Range(randomZigzagFrequency.x, randomZigzagFrequency.y);
                            currentZigzagAmplitude = Random.Range(randomZigzagAmplitude.x, randomZigzagAmplitude.y);
                        }
                    }
                }
                
                var newDirection = escapeMode switch
                {
                    EscapeMode.NONE => throw new ArgumentOutOfRangeException(),
                    EscapeMode.STRAIGHT => rotatedEscapeDirection,
                    EscapeMode.ZIGZAG => rotatedEscapeDirection +
                                         new Vector3(Mathf.Sin(Time.time * currentZigzagFrequency) * currentZigzagAmplitude,0,
                                             Mathf.Sin(Time.time * currentZigzagFrequency) * currentZigzagAmplitude),
                    EscapeMode.TOWARDS => -rotatedEscapeDirection,
                    _ => throw new ArgumentOutOfRangeException()
                };
                
                BoundMeshRenderer.transform.position += newDirection.normalized * (moveSpd * Time.deltaTime);
                yield return null;
            }
            
            escapeCoroutine = null;
            while (boidList.Count > 0)
            {
                var currentBoid = boidList[0];
                boidList.RemoveAt(0);
                Destroy(currentBoid.gameObject);
            }

            if (isAutoRespawn)
            {
                BoidsManager.Inst.RespawnBoids(this, Random.Range(randomRespawnTime.x, randomRespawnTime.y), spawnPos);
            }
            gameObject.SetActive(false);
            Destroy(contentUi.gameObject);
        }
        
        private Vector3 CalculateEscapeDirection(Vector3 targetPos)
        {
            var escapeDirection = (transform.position - targetPos).normalized;
            escapeDirection.y = 0;

            if (!isRandomAngle) return escapeDirection;
            
            var randomRotationAngle = Random.Range(-randomAngle * 0.5f, randomAngle * 0.5f);
            var rotation = Quaternion.Euler(0, randomRotationAngle, 0);
            return rotation * escapeDirection;
        }

        public void CatchBoid(Collider hitCollider, int count)
        {
            count = Mathf.Min(count, boidList.Count);
            for (var i = 0; i < count; i++)
            {
                // 물고기 잡히는 이펙트 효과 추가
                var currentBoid = boidList[0];
                
                var bounds = hitCollider.bounds;
                var x = Random.Range(bounds.min.x, bounds.max.x);
                //var y = Random.Range(bounds.min.y, bounds.max.y);
                var z = Random.Range(bounds.min.z, bounds.max.z);
                var randomPos = new Vector3(x, 0, z);

                var catchItem = new FishItem(currentBoid.FishItem.ItemName, currentBoid.FishItem.ItemCount, currentBoid.FishItem.ItemIcon);
                ItemDropManager.Inst.DropItem(catchItem, randomPos);
                
                boidList.RemoveAt(0);
                Destroy(currentBoid.gameObject);
            }

            if (boidList.Count > 0) return;
            
            if (isAutoRespawn)
            {
                BoidsManager.Inst.RespawnBoids(this, Random.Range(randomRespawnTime.x, randomRespawnTime.y), spawnPos);
            }
            gameObject.SetActive(false);
            Destroy(contentUi.gameObject);
        }

        private void ShowFishSpot()
        {
            if (!fishSpot || !showWaterEffect) return;

            if (Physics.Raycast(BoundMeshRenderer.transform.position, Vector3.up, out var hit, 
                    float.MaxValue,waterLayer))
            {
                if (stylizedWaterDataProvider == null || waterObject == null)
                {
                    stylizedWaterDataProvider = hit.collider.GetComponent<StylizedWaterDataProvider>();
                    waterObject = stylizedWaterDataProvider.GetComponent<WaterObject>();
                }
                
                if (isUsingDynamicHeight)
                {
                    var newFishSpotPosition = fishSpot.position;
                    newFishSpotPosition.y = stylizedWaterDataProvider.GetWaterHeightSingle(waterObject, hit.point);;
                    fishSpot.position = newFishSpotPosition;
                }
                else
                {
                    fishSpot.position = hit.point + fishSpotOffset;
                }
            }
        }

        public FishItem GetBoidInfo() => boidPrefab.FishItem;
    }
}