using System;
using System.Threading;
using Cysharp.Threading.Tasks;
using DG.Tweening;
using UnityEngine;

/// <summary>
/// 团子在进入战斗的时候转换为战斗团子类
/// </summary>
public class BattleBlob: MonoBehaviour
{
    [Header("兵种绑定的相关基础数据")]
    public int MaxHP;
    public float AttackDistance = 1;
    public float AttactBackDistance = 2;
    public float BasicAttackSpeed = 1;
    public float BasicAttackDamage = 1;
    public float HurtingBackDistance = 2;
    public float HurtingRecoveringTime = 1;

    [Header("倍率乘区")]
    public float AttackSpeedMultiplier = 1f;
    public float AttackDamageMultiplier = 1f;

    [Header("可变属性")] 
    
    private float currentHP;

    public float CurrentHP
    {
        get => currentHP;
        set
        {
            currentHP = value;
            if (currentHP == 0)
            {
                BattleManager.Instance.onBlobRetire?.Invoke(this);
                Destroy(this.gameObject, 0.5f);
            }
        }
    }
    public float AttackSpeed => BasicAttackSpeed * AttackSpeedMultiplier;
    public float AttackDamage => BasicAttackDamage * AttackDamageMultiplier;


    public Animator animator;

    private float BackPositionX;
    public Rigidbody rigid;
    public float MovingSpeed = 2f;
    
    public CancellationTokenSource movingCancelToken = new CancellationTokenSource();


    private TriggerDetection hitbox;
    private float AttackCooldownTime = 0;
    public BattleBlobJob CurrentJob;
    public BlobController originalBlob;
    
    public Type Job;

    public void Start()
    {
        animator = GetComponent<Animator>();
        CurrentJob = GetComponent<BattleBlobJob>();
        hitbox = GetComponentInChildren<TriggerDetection>();
        rigid = GetComponent<Rigidbody>();
        BackPositionX = transform.position.x;
        movingCancelToken = new CancellationTokenSource();

        hitbox.onTriggerEnter += OnHitBoxEnter;
        hitbox.onTriggerStay += OnHitBoxStay;
        hitbox.GetComponent<BoxCollider>().size = new Vector3(AttackDistance, 3, 1);
        hitbox.GetComponent<BoxCollider>().center = new Vector3(AttackDistance/2, 3, 1);
    }

    public async UniTaskVoid GetHurt(float damage)
    {
        // BackPositionX = transform.position.x;
        movingCancelToken.Cancel();
        CurrentHP -= damage;
        await transform.DOMoveX(transform.position.x - HurtingBackDistance, 0.1f);
        await UniTask.WaitForSeconds(HurtingRecoveringTime);
        movingCancelToken = new CancellationTokenSource();
        TryBackToPosition().Forget();
    }

    public async UniTaskVoid TryBackToPosition()
    {
        await rigid.DOMoveX(BackPositionX, Mathf.Abs(transform.position.x - BackPositionX)/MovingSpeed).WithCancellation(movingCancelToken.Token);
    }
    
    
    private void OnHitBoxEnter(Collider other)
    {
        
        var enemy = other.gameObject.GetComponent<EnemyController>();
        if (!enemy) return;
        // print("enemy!");
        movingCancelToken.Cancel();
        //攻击部分代码
    }

    private void Update()
    {
        if(AttackCooldownTime>0)
            AttackCooldownTime -= Time.deltaTime;
    }

    private EnemyController targetEnemy;
    private void OnHitBoxStay(Collider other)
    {
        
        var enemy = other.gameObject.GetComponent<EnemyController>();
        if (!enemy) return;
        if (enemy.isDead) return;
        // print("enemy!");
        movingCancelToken.Cancel();
        //攻击部分代码
        if (AttackCooldownTime <= 0)
        {
            AttackCooldownTime = 1 / AttackSpeed;
            targetEnemy = enemy;
            animator.SetTrigger("Attack");
        }
    }

    public void OnAnimationAttack()
    {
        if(targetEnemy && !targetEnemy.isDead)
            CurrentJob?.Attack(this, targetEnemy.gameObject).Forget();
    }
}