using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using Animancer;
using BITKit;
using BITKit.Physics;
using UnityEngine;
using Cysharp.Threading.Tasks;

namespace Net.Project.B.World
{
    public class WorldRagdollController : MonoBehaviour
    {
        [SerializeField] private AnimationClip[] startClips;
        private AnimancerComponent _animancerComponent;
        private Transform _hips;
        private bool _isInitialized;
        private bool _isPlaying;
        private bool _isBreak;
        private UnityCollisionController[] _collisionControllers=Array.Empty<UnityCollisionController>();
        private Collider[] _colliders=Array.Empty<Collider>();
        private Collider[] _selfColliders = Array.Empty<Collider>();
        private Rigidbody[] _rigidbodies = Array.Empty<Rigidbody>();
        private Collider _selfCollider;
        private Rigidbody _selfRigidbody;

        private void OnEnable()
        {
            if (_isInitialized)
            {
                Play();
            }
        }

        private void Start()
        {
            _selfRigidbody = GetComponent<Rigidbody>();
            _selfCollider = GetComponent<Collider>();
            _animancerComponent=GetComponent<AnimancerComponent>();
            _selfColliders = GetComponentsInChildren<Collider>().RemoveIn(_selfCollider).ToArray();
            _rigidbodies = GetComponentsInChildren<Rigidbody>().RemoveIn(_selfRigidbody).ToArray();
            _hips = _animancerComponent.Animator.GetBoneTransform(HumanBodyBones.Hips);
            foreach (var collisionController in _collisionControllers=_animancerComponent.GetComponentsInChildren<UnityCollisionController>())
            {
                collisionController.OnUnityTriggerEnter += OnUnityTriggerEnter;
            }
            _colliders = _collisionControllers.Select(x => x.GetComponent<Collider>()).ToArray();
            if (_isInitialized) return;
            _isInitialized = true;
            Play();
        }

        private void OnUnityTriggerEnter(Collider obj)
        {
            if (_isPlaying is false) return;
            if (_selfColliders.Contains(obj)) return;
            if (obj is not MeshCollider{convex:false} && obj.ClosestPoint(transform.position).y > transform.position.y)
            {
                Stop();
            }
     
        }

        private void Stop()
        {
            _isBreak = true;
            _selfRigidbody.isKinematic = true;
            _animancerComponent.enabled  = _selfCollider.enabled = _animancerComponent.Animator.enabled = false;
        }
        private async void Play()
        {
            if(!_animancerComponent)return;
            
            _isBreak = false;
            foreach (var x in _colliders)
            {
                x.isTrigger = true;
            }
            _animancerComponent.enabled = _selfCollider.enabled = _animancerComponent.Animator.enabled = true;
            _selfRigidbody.isKinematic = false;
            _isPlaying = true;
            foreach (var x in _rigidbodies)
            {
                x.isKinematic = true;
            }
            var play = _animancerComponent.Play(startClips.Random());
            play.Time = 0;
            try
            {
                await play.WithCancellation(destroyCancellationToken);
            }
            catch (OperationCanceledException)
            {
                return;
            }
      
            _isPlaying = false;
            _animancerComponent.enabled = _selfCollider.enabled =_animancerComponent.Animator.enabled= false;
            _selfRigidbody.isKinematic = true;
            

            if (_isBreak)
            {
                foreach (var x in _colliders)
                {
                    x.isTrigger = false;
                }
                foreach (var x in _rigidbodies)
                {
                    x.isKinematic = false;
                    x.velocity = default;
                }
            }
            else
            {
                foreach (var x in _colliders)
                {
                    x.isTrigger = false;
                }
                foreach (var x in _rigidbodies)
                {
                    x.isKinematic = true;
                }
            }
         
        }

        private void OnCollisionEnter(Collision other)
        {
            if (other.gameObject.layer == LayerMask.NameToLayer("Entities"))
            {
                Stop();
            }
        }

        private void OnAnimatorMove()
        {
            var isGrounded = Physics.Raycast(transform.position+Vector3.up*0.1f,Vector3.down,0.11f);
            _animancerComponent.Animator.applyRootMotion = isGrounded;
            if (isGrounded)
            {
                _selfRigidbody.velocity = _animancerComponent.Animator.velocity;
            }
        }
    }

}