using CommonAI.Zone.Instance;
using CommonAI.Zone.Formula;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using XmdsCommon.Plugin;
using XmdsCommonServer.Plugin;
using XmdsCommonServer.Plugin.XmdsSkillTemplate.Skills;
using XmdsCommonServer.Plugin.XmdsSkillTemplate.DamageCalculator;
using CommonAI.Data;
using CommonLang;

namespace XmdsCommonSkill.Plugin.Buffs
{
	/// <summary>
	/// 攻击恢复已损失生命百分比
	/// </summary>
	public class XmdsBuff_AttackAddHPExt : XmdsBuffBase
	{
        public float recoverHp = 0;

		//避免这一次攻击就会回血
        private long mBuffStartTriggerTime = 0;

		private int mHandleUUID = 0;

        public override int GetAbilityID()
        {
            return (int)XmdsCommon.Plugin.XmdsBuffProperties.XmdsBuffAbility.Attack_AddHPEXT;
        }


		public override void CopyTo(UnitBuff other)
		{
			var ret = other as XmdsBuff_AttackAddHPExt;
			ret.recoverHp = this.recoverHp;

			base.CopyTo(other);
		}

		protected override void OnBuffBegin(XmdsCommonServer.Plugin.XmdsVirtual hitter, XmdsCommonServer.Plugin.XmdsVirtual attacker, InstanceUnit.BuffState state)
        {
            //注册监听.
            mHandleUUID = hitter.RegistOnHitOther(OnHandlerHitOther, null);

            this.mBuffStartTriggerTime = CommonLang.CUtils.localTimeMS + 200;
        }

        protected override void OnBuffEnd(XmdsCommonServer.Plugin.XmdsVirtual hitter, InstanceUnit.BuffState state, bool replace)
        {
            //取消监听.
            hitter.UnRegistOnHitOther(mHandleUUID);
        }

        //单位被攻击时,判断是否符合条件触发BUFF效果.
        private float OnHandlerHitOther(float damage, XmdsVirtual hitted, XmdsVirtual attacker, AttackSource source, 
            ref XmdsVirtual.AtkResult result, DamageType damageType, GameSkill skill, ref bool isEndDispatch)
        {
            long lStarttime = CommonLang.CUtils.localTimeMS;

            if (damage > 0 && this.recoverHp > 0 && this.mBuffStartTriggerTime < lStarttime && damageType == DamageType.Damage)
			{
                int baseAddHP = CUtils.CastInt((attacker.mUnit.MaxHP - attacker.mUnit.CurrentHP) * this.recoverHp);
				if(baseAddHP > 0)
				{
					attacker.mUnit.AddHP(baseAddHP, attacker.mUnit);
				}				
			}

            return damage;
        }


        protected override void OnDispose()
        {
            base.OnDispose();
        }
    }
}