using System;
using System.Collections.Generic;
using Unity.VisualScripting;
using UnityEngine;
using UnityEngine.AI;

public class BlockingAnimation : Attribute { }

public class Player : MonoBehaviour
{
    public static Player Instance { get; private set; }

    [SerializeField]
    public NavMeshAgent _navAgent;
    [SerializeField]
    public Animator _animator;

    [SerializeField]
    private Transform _holdPoint;

    private PlayerStates _currentActing;
    private AnimationStates _currentAnimation;

    public Dictionary<StatsId, Stat> Stats;
    public JobPositions JobPosition { get; set; }

    private readonly Queue<PlayerTasks> _tasks = new Queue<PlayerTasks>();
    private PlayerTasks _currentTask;

    private const string WALK_VELOCITY = "WalkVelocity";

    private ContainerItem _containerItem;
    private Action _OnAnimationFinish;

    private void Awake()
    {

        if (Instance != null)
        {
            Destroy(gameObject);
            Debug.Log("There's more than one player instance");
            return;
        }
        PlayerPrefs.SetString("lastExitName", string.Empty);
        Instance = this;
        Stats = PlayerStats.CreateInitialStats();
        JobPosition = JobPositions.Unemployed;

        DontDestroyOnLoad(gameObject);
    }

    private void Start()
    {
        TimeManager.Instance.OnMinuteChanged += UpdateStatsByClock;
        _animator.applyRootMotion = true;
        _navAgent.updatePosition = false;
        
        _currentActing = PlayerStates.Awake;

       
    }

    private void OnDestroy()
    {
        TimeManager.Instance.OnMinuteChanged -= UpdateStatsByClock;
    }

    private void Update()
    {
        if (PlayerHelper.IsBlockingAnimation(_currentAnimation))
        {
            if (IsAnimationStatePlaying(0))
            {
                return;
            }
            else
            {
                _OnAnimationFinish?.Invoke();
                _OnAnimationFinish = null;
            }
        }

        if (_currentTask == null || _currentTask.Status == TaskStatus.Complete)
        {
            _tasks.TryDequeue(out _currentTask);
        }
        if (_currentTask != null)
        {
            if (_currentTask.Status == TaskStatus.Waiting)
                Debug.Log($"Current task {_currentTask.Task}");
            switch (_currentTask.Task)
            {
                case Tasks.Rotate:
                    _currentTask.UpdateStatus(Rotate(_currentTask.TagretObject._interactionPoint.forward));
                    break;
                case Tasks.Move:
                    if (_currentAnimation == AnimationStates.Sitting)
                    {
                        SetPlayerAnimation(AnimationStates.Standing);
                        return;
                    }
                    _navAgent.SetDestination(_currentTask.TagretObject._interactionPoint.position);
                    _currentTask.UpdateStatus(MoveToPoint());
                    break;
                case Tasks.Interact:
                    // Show interaction menu
                    _currentTask.TagretObject.SpawnMenu();
                    _currentTask = null;
                    //if (IsPathComplete(_currentTask.TagretObject._interactionPoint.position))
                    //    _currentTask.UpdateStatus(InteractWithObject(_currentTask.TagretObject));
                    //else
                    //{
                    //    AddTask(new PlayerTasks(Tasks.Move, _currentTask.TagretObject));
                    //    AddTask(new PlayerTasks(Tasks.Rotate, _currentTask.TagretObject));
                    //    AddTask(_currentTask);
                    //    _currentTask = null;
                    //}
                    break;
            }
        }
    }

    public void SetPosition(Vector3 desiredPosition)
    {
        _navAgent.Warp(desiredPosition);
        _navAgent.updatePosition = false;
    }

    private TaskStatus MoveToPoint()
    {
        _navAgent.isStopped = false;
        SetPlayerAnimation(AnimationStates.Walking);

        _animator.SetFloat(WALK_VELOCITY, _navAgent.velocity.magnitude);
        return IsPathComplete(_navAgent.destination) ? TaskStatus.Complete : TaskStatus.InProgress;
    }

    private bool IsPathComplete(Vector3 destination)
    {
        var dest = new Vector3(destination.x, 0, destination.z);
        var pos = new Vector3(_navAgent.transform.position.x, 0, _navAgent.transform.position.z);

        if (Vector3.Distance(dest, pos) <= _navAgent.radius)
        {
            transform.position = destination;
            if (!_navAgent.hasPath || _navAgent.velocity.sqrMagnitude < 0.2f)
            {
                SetPlayerAnimation(AnimationStates.Idle);
                _navAgent.isStopped = true;
                return true;
            }
        }

        return false;
    }

    public TaskStatus Rotate(Vector3 target)
    {
        var targetRot = Quaternion.LookRotation(target);
        Quaternion rotation = Quaternion.Slerp(transform.rotation, Quaternion.LookRotation(target), 10 * Time.deltaTime);
        rotation.x = 0;
        transform.rotation = rotation;
        if (IsApproximate(targetRot, transform.rotation, 0.000004f))
        {
            return TaskStatus.Complete;
        }
        return TaskStatus.InProgress;
    }

    private bool IsApproximate(Quaternion q1, Quaternion q2, float precision)
    {
        return Mathf.Abs(Quaternion.Dot(q1, q2)) >= 1 - precision;
    }

    private TaskStatus InteractWithObject(BaseInteractableObject interactableObject)
    {
        interactableObject.Interact(this);
        return TaskStatus.Complete;
    }

    public void SetPlayerAnimation(AnimationStates newState, Action onAnimationFinish)
    {
        _OnAnimationFinish = onAnimationFinish;
        SetPlayerAnimation(newState);
    }

    public void SetPlayerAnimation(AnimationStates newState)
    {
        if (newState == _currentAnimation)
        {
            return;
        }
        _animator.Play(PlayerHelper.GetEnumMemberValue(newState));
        _currentAnimation = newState;
    }

    public bool IsAnimationStatePlaying(int animLayer)
    {
        string stateName = PlayerHelper.GetEnumMemberValue(_currentAnimation);
        var stateInfo = _animator.GetCurrentAnimatorStateInfo(animLayer);
        return stateInfo.IsName(stateName) && stateInfo.normalizedTime < 1.0f;
    }

    public void AddTask(PlayerTasks task)
    {
        _tasks.Enqueue(task);
    }

    public void SetPlayerActing(PlayerStates state)
    {
        _currentActing = state;
    }

    public void UpdateStatsByClock()
    {
        switch (_currentActing)
        {
            case PlayerStates.Eating:
                Stats[StatsId.Food].increase(10f);
                break;
            case PlayerStates.Sleeping:
                Stats[StatsId.Energy].increase(0.2f);
                break;
            default:
                Stats[StatsId.Food].deduct(0.034f); // 48 hours it's 100, 100/2880=~0.034 per minute
                Stats[StatsId.Energy].deduct(0.1f); // 24 hours it's 100, 100/1440=~0.096 per minute
                break;
        }
    }

    public void Pay(float amount)
    {
        Stats[StatsId.Money].deduct(amount);
    }

    public void AddMoney(float amount)
    {
        Stats[StatsId.Money].increase(amount);
    }

    public void SetContainerItem(ContainerItem containerItem)
    {
        containerItem.transform.parent = _holdPoint;
        containerItem.transform.localPosition = Vector3.zero;
        _containerItem = containerItem;
    }
    public ContainerItem GetContainerItem()
    {
        return _containerItem;
    }
    public void ClearContainerItem()
    {
        Destroy(_containerItem.gameObject);
        _containerItem = null;
    }
    public bool IsHoldContainerItem()
    {
        return _containerItem != null;
    }
}