using DG.Tweening;
using UnityEngine;
using UnityEngine.UI;
using Core.Utilities;
using TowerDefense.Level;

/**
 * 无尽模式boss控制器
 * @Author: chenxin
 * @Date: 2020-10-30 16:40:54
 */
namespace KTGMGemClient
{
    public class EndlessBossCtrl : Singleton<EndlessBossCtrl>
    {
        /// <summary>
        /// boss动作
        /// </summary>
        private Animator BossAnimator;

        /// <summary>
        /// 动作状态
        /// </summary>
        public EndlessBossActionState ActionState { get; set; }

        public Image Title;

        private string titlePath = "UI/Endless/SkillTitle/";

        private ParticleSystem deadPS, deadMoney;

        private string prefabPath = "Prefabs/Boss/Boss_";

        private GameObject Body;

        // Start is called before the first frame update
        private void Start()
        {
            ColorVal = 0;
            EventCenter.Ins.Add<int>((int)KTGMGemClient.EventType.EndlessBossSkillGlintTitle, Glint);
        }

        private void LateUpdate()
        {
            if (BossAnimator == null) return;

            AnimatorStateInfo stateInfo = BossAnimator.GetCurrentAnimatorStateInfo(0);

            if (stateInfo.IsName("Boss_Summon") && stateInfo.normalizedTime >= 1f)
            {
                EventCenter.Ins.BroadCast((int)EventType.EndlessBossSummonEnd);
                // 召唤动作结束后自动切换到站立状态
                ChangeState(EndlessBossActionState.Standing);
            }
            else if (stateInfo.IsName("Boss_Death") && stateInfo.normalizedTime >= 1f)
            {
                ClearBoss();
                EndlessLevelManager.instance.WaveManager.HideTunel();
            }
        }

        public void ClearBoss()
        {
            BossAnimator = null;
            deadPS = null;
            deadMoney = null;

            if (Body != null)
            {
                Destroy(Body);
                Body = null;
            }
        }

        private void Glint(int skillType)
        {
            Title.sprite = Resources.Load<Sprite>($"{titlePath}{skillType}");
            //设置一个DOTween队列
            Sequence flashSeq = DOTween.Sequence();
            Color c = Title.color;
            c.a = 0;
            Title.color = c;
            Title.gameObject.SetActive(true);

            flashSeq.Append(DOTween.To(() => ColorVal, (v) => ColorVal = v, 1, 0.3f));
            flashSeq.Append(DOTween.To(() => ColorVal, (v) => ColorVal = v, 0, 0.15f));
            flashSeq.Append(DOTween.To(() => ColorVal, (v) => ColorVal = v, 1, 0.3f));
            flashSeq.Append(DOTween.To(() => ColorVal, (v) => ColorVal = v, 0, 0.15f));
            flashSeq.Append(DOTween.To(() => ColorVal, (v) => ColorVal = v, 1, 0.3f));
            flashSeq.Append(DOTween.To(() => ColorVal, (v) => ColorVal = v, 0, 0.15f));
            flashSeq.AppendCallback(() => { EventCenter.Ins.BroadCast((int)KTGMGemClient.EventType.EndlessBossSkillGlintTitleCompleted); });
        }

        private float ColorVal
        {
            get { return Title.color.a; }
            set
            {
                Title.gameObject.SetActive(value != 0);
                Color c = Title.color;
                c.a = value;
                Title.color = c;
            }
        }

        /// <summary>
        /// 切换状态
        /// </summary>
        /// <param name="newState"></param>
        public void ChangeState(EndlessBossActionState newState)
        {
            ActionState = newState;

            if (newState == EndlessBossActionState.Death)
            {
                deadPS?.Play();
                deadMoney?.Play();
            }
            BossAnimator.SetInteger("State", (int)newState);
        }

        /// <summary>
        /// 刷新boss形象
        /// </summary>
        /// <param name="resId"></param>
        public void RefreshBody(int resId)
        {
            GameObject prefab = Resources.Load<GameObject>($"{prefabPath}{resId}");

            if (prefab == null)
            {
                Debug.LogError($"---- 加载boss资源出错，resId: {resId} ----");
                return;
            }

            Body = Instantiate(prefab);
            Body.transform.SetParent(transform, false);
            BossAnimator = Body.GetComponent<Animator>();
        }
    }
}