using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class DualAvatarController : MonoBehaviour
{
    const string APPEAR_TRIGGER     = "Appear"; //не используется пока в анимацияхъ
    const string IDLE_TRIGGER       = "Idle";
    const string CHIPSPAWN_TRIGGER  = "ChipSpawn"; 
    const string WIN_TRIGGER        = "Win"; 
    const string LOSE_TRIGGER       = "Lose"; 



    const CellState PLAYER1 = CellState.Player1;
    const CellState PLAYER2 = CellState.Player2;


    [SerializeField] private List<GameObject> characterPrefabs;
    Dictionary<CellState, Avatar> avatars = new();

    [SerializeField] Transform AvatarsParent;
    private AvatarEventBus bus;


    //Для левого аватара
    [SerializeField] private Vector2 baseHiddenLocalPosition; 
    [SerializeField] private Vector2 baseShownLocalPosition;


    [SerializeField] private float CharacterMovementSpeed = 5000;
    public Avatar CurrentAvatar => avatars[GameManager.instance.currentPlayer];
    public static DualAvatarController Instance;
    private bool spawned = false;


    public void Initialize()
    {
        Instance = this;

        if (!spawned)
        {
            avatars[PLAYER1] = CreateAvatar(characterPrefabs[0], AvatarsParent, PLAYER1);
            avatars[PLAYER2] = CreateAvatar(characterPrefabs[1], AvatarsParent, PLAYER2);
            spawned = true;
        }

        bus = AvatarEventBus.Instance;
        BindEvents();
    }

    


    public void ShowCharacters() //заспвавнить и показать
    {
        

        if (characterPrefabs != null && characterPrefabs.Count < 2)
            Debug.LogError("Меньше 2 персонажей в списке аватаров.");

        //Тут возможно будет рандомизация персонажей


        StartCoroutine(MoveLocal(avatars[PLAYER1], GetShownPosition(PLAYER1), CharacterMovementSpeed, OnComplete: AvatarAppeared));
        StartCoroutine(MoveLocal(avatars[PLAYER2], GetShownPosition(PLAYER2), CharacterMovementSpeed, OnComplete: AvatarAppeared));
    }
    public void HideCharacters() 
    {
        StopAllCoroutines();
        StartCoroutine(MoveLocal(avatars[PLAYER1], GetHiddenPosition(PLAYER1), CharacterMovementSpeed, OnComplete: () => { }));
        StartCoroutine(MoveLocal(avatars[PLAYER2], GetHiddenPosition(PLAYER2), CharacterMovementSpeed, OnComplete: () => { }));
    }

    Avatar CreateAvatar(GameObject prefab, Transform parent, CellState team)
    {
        GameObject go = Instantiate(prefab, parent);

        Avatar avatar = go.GetComponent<Avatar>();
        avatar.Initialize(team);

        Transform transform = go.transform;
        transform.localPosition = GetHiddenPosition(team);

        return avatar;
    }

    Vector2 GetHiddenPosition(CellState team)
        => team == PLAYER1 ? baseHiddenLocalPosition : new Vector2(-baseHiddenLocalPosition.x, baseHiddenLocalPosition.y);
    Vector2 GetShownPosition(CellState team)
        => team == PLAYER1 ? baseShownLocalPosition : new Vector2(-baseShownLocalPosition.x, baseShownLocalPosition.y);


    void AvatarAppeared()//тут будем проверять когда оба прибыли.
    {

    }



    //вынести события сюда из аватаров и прописать обработчики.

    #region ПРИВЯЗКИ К ШИНЕ
    public void BindEvents()
    {
        bus.OnAvatarsAppeared.AddListener(Appear);
        bus.OnTurnStart.AddListener(TurnStart);
        bus.OnTurnEnd.AddListener(TurnEnd);
        bus.OnEndRound.AddListener(EndRound);
        bus.OnDraw.AddListener(Draw);
        bus.OnNewRoundStarted.AddListener(NewRound);
        bus.OnEndGame.AddListener(EndGame);
    }
    public void UnbindEvents()
    {
        bus.OnAvatarsAppeared.RemoveListener(Appear);
        bus.OnTurnStart.RemoveListener(TurnStart);
        bus.OnTurnEnd.RemoveListener(TurnEnd);
        bus.OnEndRound.RemoveListener(EndRound);
        bus.OnDraw.RemoveListener(Draw);
        bus.OnNewRoundStarted.RemoveListener(NewRound);
        bus.OnEndGame.RemoveListener(EndGame);
    }
    #endregion

    #region ОБРАБОТЧИКИ
    private void Appear() 
    {
        avatars[PLAYER1].Animator.SetTrigger(APPEAR_TRIGGER);
    }
    private void TurnStart(CellState player) { }
    private void TurnEnd(CellState player) 
    {
        avatars[player].Animator.SetTrigger(CHIPSPAWN_TRIGGER);
    }
    private void EndRound(CellState winner) 
    {
        //Обозначние для ничьей
        if (winner == CellState.Empty)
        {
            Draw();
            return;
        }

        CellState loser = winner == CellState.Player1 ? CellState.Player2 : CellState.Player1;
        avatars[winner].Animator.SetTrigger(WIN_TRIGGER);
        avatars[loser].Animator.SetTrigger(LOSE_TRIGGER);
    }
    private void Draw() 
    {
        Debug.Log("DRAW");
    }
    private void NewRound(CellState lastRoundWinner) 
    {
        //Debug.Log("NEW ROUND LAST WINNER " + lastRoundWinner);
    }
    private void EndGame(CellState gameWinner) 
    {
        //Debug.Log("ENDGAME");
    }
    #endregion

    #region ХЕЛПЕРЫ
    private IEnumerator MoveLocal(Avatar avatar, Vector3 targetLocalPos, float speed, Action OnComplete)
    {
        Transform t = avatar.transform;
        while (t.localPosition != targetLocalPos)
        {
            t.localPosition = Vector3.MoveTowards(t.localPosition, targetLocalPos, speed * Time.deltaTime);
            yield return null;
        }
        OnComplete?.Invoke();
    }
    #endregion
}