using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using DG.Tweening;
using Sirenix.OdinInspector;

/// <summary>
/// 地藏的手组件
/// </summary>
public class DiZangsHadn : MonoBehaviour
{
    //   _____       _     _ _      
    //  |  __ \     | |   | (_)     
    //  | |__) |   _| |__ | |_  ___ 
    //  |  ___/ | | | '_ \| | |/ __|
    //  | |   | |_| | |_) | | | (__ 
    //  |_|    \__,_|_.__/|_|_|\___|
    [HideInInspector]
    public DiZang owner;
    
    /// <summary>
    /// 手下落到目标点后会停留多长时间
    /// </summary>
    public float TakeMoneyTime;


    //   _____      _            _       
    //  |  __ \    (_)          | |      
    //  | |__) | __ ___   ____ _| |_ ___ 
    //  |  ___/ '__| \ \ / / _` | __/ _ \
    //  | |   | |  | |\ V / (_| | ||  __/
    //  |_|   |_|  |_| \_/ \__,_|\__\___|

    /// <summary>
    /// 手拿钱移动到的目标点位
    /// </summary>
    private Transform target;
    /// <summary>
    /// 浮动动画,用来重启浮动动画解决Tween的一些局限性问题
    /// </summary>
    private Tweener floatTweener;
    /// <summary>
    /// 手在屏幕外的起点
    /// </summary>
    private Vector3  start;
    /// <summary>
    /// 此时是否可被攻击
    /// </summary>
    [Header("此时能否被攻击")][SerializeField]
    private bool canBeHit = false;
    /// <summary>
    /// 是否被玩家的攻击打断了？
    /// </summary>
    [Header("此时是否被打断")][SerializeField]
    private bool wasInteruput;
    private VibrationManager vibrationManager;
    private Animator animator;

    //    _____      _ _ ____             _    
    //   / ____|    | | |  _ \           | |   
    //  | |     __ _| | | |_) | __ _  ___| | __
    //  | |    / _` | | |  _ < / _` |/ __| |/ /
    //  | |___| (_| | | | |_) | (_| | (__|   < 
    //   \_____\__,_|_|_|____/ \__,_|\___|_|\_\
    void Start(){Init();}

    //   _   _                            _ 
    //  | \ | |                          | |
    //  |  \| | ___  _ __ _ __ ___   __ _| |
    //  | . ` |/ _ \| '__| '_ ` _ \ / _` | |
    //  | |\  | (_) | |  | | | | | | (_| | |
    //  |_| \_|\___/|_|  |_| |_| |_|\__,_|_|
    private void Init(){
        //找到需要的物体和组件
        owner = FindObjectOfType<DiZang>();
        target = owner.transform.Find("手的终点位置");
        start = transform.position;
        vibrationManager = FindObjectOfType<VibrationManager>();
        animator = GetComponent<Animator>();
    }

    /// <summary>
    /// 主人发命令拿钱时触发
    /// </summary>
    public void ATK(){
        //创建、播放并记录一个抖动动画
        Tweener floatTweener = transform.DOShakePosition(2f,0.05f,50,90,false,false);
        this.floatTweener = floatTweener;
        //创建、播放并记录一个下移动画
        Tweener tweener = transform.DOMoveY(
            target.position.y,
            2f
        );
        //震动手柄和屏幕
        vibrationManager.ShakeScream(Vector2.up,1f);
        StartCoroutine(vibrationManager.ShakePad(0.4f,0.2f,2f,VibrationManager.PadShakeitem.伸手拿钱));
        //创建并给予下移动画结束事件
        TweenCallback action = () =>{
            //下移结束，标记为可被攻击
            canBeHit = true;
            //删掉正在播放的抖动动画
            floatTweener.Kill();
            //拿走钱
            FindObjectOfType<MoneyBox>().OnBeTakeMoney();
            //开始协程，等待拿钱时间结束后上移回去手
            Invoke("TakeMoneyAndRun",TakeMoneyTime);
            //开始抓握动画
            animator.SetBool("isTaking",true);
        };
        tweener.OnComplete(action);
    }

    /// <summary>
    /// 手到塞钱箱后触发，执行等待和返回操作
    /// </summary>
    private void TakeMoneyAndRun(){
        //如果没有被打断，才会执行正常的上移
        if(!wasInteruput){
            //创建、播放并记录一个抖动动画
            Tweener floatTweener = transform.DOShakePosition(2f,0.05f,50,90,false,false);
            this.floatTweener = floatTweener;
            //创建、播放并记录一个上移动画
            Tweener tweener = transform.DOMoveY(
                start.y,
                2f
            );
            //创建并给予下移动画结束事件
            TweenCallback action = () =>{
                //为下一次下移做准备，标记自身不可再被击中
                canBeHit = false;
                //删掉抖动动画
                floatTweener.Kill();
                //通知主人，攻击结束
                owner.ATKEnd();
                //重置一下自己的状态
                transform.position = start;
                GetComponent<Rigidbody2D>().velocity = Vector2.zero;
                animator.SetBool("isTaking",false);
            };
            tweener.OnComplete(action);
            //震动手柄和屏幕
            vibrationManager.ShakeScream(Vector2.up,1f);
            StartCoroutine(vibrationManager.ShakePad(0.4f,0.2f,2f,VibrationManager.PadShakeitem.伸手拿钱));
        }
    }

    //   ______               _   
    //  |  ____|             | |  
    //  | |____   _____ _ __ | |_ 
    //  |  __\ \ / / _ \ '_ \| __|
    //  | |___\ V /  __/ | | | |_ 
    //  |______\_/ \___|_| |_|\__|

    /// <summary>
    /// 当创到玩家触发，触发玩家的被击功能
    /// </summary>
    private void OnTouchThePlayer(MyPlayer player){
        //告诉玩家，你被攻击了
        player.OnBeHit(owner.ATK, 
                      ((transform.position.x - 
                        player.transform.position.x)
                         > 0) ? 1 : -1);//通过自身位置和玩家位置的比较来返回玩家本次的受击方向
    }

    /// <summary>
    /// 当手被攻击触发
    /// </summary>
     public void OnBeHit(MyPlayer.AtkMethod hitMethod, int hitDir){
        //标记此时被打断
        wasInteruput = true;
        CancelInvoke("TakeMoneyAndRun");
        //突然抬起一段，伴随着剧烈的震动
        //创建、播放并记录一个抖动动画
        Tweener floatTweener = transform.DOShakePosition(0.5f,0.5f,50,90,false,false);
        this.floatTweener = floatTweener;
        //创建一个猛烈上移动画
        Tweener tweener = transform.DOMoveY(
            transform.position.y + 2f,
            0.5f
        );
        //给猛烈上移动画添加结束事件
        TweenCallback action = () =>{
            floatTweener.Kill();
            canBeHit = false;
            wasInteruput = false;
            Invoke("TakeMoneyAndRun",TakeMoneyTime);
        };
        tweener.OnComplete(action);

        //结算生命值
        owner.HPLeft -= MyPlayer.atkMethodMagnification[hitMethod];
        //看下死了没
        if(owner.CheckDead()) {}

        //震动手柄和屏幕
        vibrationManager.ShakeScream(Vector2.up,1f);
        StartCoroutine(vibrationManager.ShakePad(0.4f,0.2f,0.2f,VibrationManager.PadShakeitem.伸手拿钱));
    }

    //    _____      _ _ _     _             
    //   / ____|    | | (_)   (_)            
    //  | |     ___ | | |_ ___ _  ___  _ __  
    //  | |    / _ \| | | / __| |/ _ \| '_ \ 
    //  | |___| (_) | | | \__ \ | (_) | | | |
    //   \_____\___/|_|_|_|___/_|\___/|_| |_|                                  
    protected void OnCollisionEnter2D(Collision2D other)//当有物体碰上
    {
        if(other.collider.gameObject.TryGetComponent<MyPlayer>(out MyPlayer player))
            {OnTouchThePlayer(player);}//如果创到的是玩家，则Call事件
        //如果被镰刀创到，Call一下OnBeHit事件，传入攻击方式和攻击来袭方向
        else if(other.collider.gameObject.TryGetComponent<Sickle>(out Sickle sickle)){
            if(canBeHit)
            OnBeHit(MyPlayer.AtkMethod.镰刀, 
                    (transform.position.x - sickle.transform.position.x > 0) ? -1 : 1);
            Destroy(sickle.gameObject);}
    }
}