using CommonAI.Data;
using CommonAI.Zone;
using CommonAI.Zone.Formula;
using CommonAI.Zone.Instance;
using XmdsCommon.Plugin;
using XmdsCommonServer.Plugin;
using XmdsCommonServer.Plugin.XmdsSkillTemplate.DamageCalculator;
using XmdsCommonServer.Plugin.XmdsSkillTemplate.Skills;

namespace XmdsCommonSkill.Plugin.Buffs
{

    /// <summary>
    ///BUFF：抵御一次致命伤害
    /// </summary>
    public class XmdsBuff_RemitDeadlyDamage : XmdsBuffBase
    {
        public int maxRemitDamage = 0;
        public int minRemitDamage = 0;

        private int UUID = 0;

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

		public override void CopyTo(UnitBuff other)
		{
			var ret = other as XmdsBuff_RemitDeadlyDamage;
			ret.maxRemitDamage = this.maxRemitDamage;
			ret.minRemitDamage = this.minRemitDamage;
			base.CopyTo(other);
		}

		protected override void OnBindTemplate(ref BuffTemplate buffTemplate)
        {
            //DOT类技能首帧无效.
            buffTemplate.FirstTimeEnable = false;
            base.OnBindTemplate(ref buffTemplate);
        }

        public override void BuffBegin(XmdsVirtual hitter, XmdsVirtual attacker, InstanceUnit.BuffState state)
        {
            UUID = hitter.RegistOnHitDamage(OnHandleHitDmage, null, true);
        }

        public override void BuffEnd(XmdsVirtual hitter, InstanceUnit.BuffState state, bool replace)
        {
            hitter.UnRegistOnHitDamage(UUID);
        }

        //被打监听.
        protected virtual float OnHandleHitDmage(float damage, XmdsVirtual hitted, XmdsVirtual attacker, AttackSource source, 
            ref XmdsVirtual.AtkResult result, DamageType damageType, GameSkill skill, ref bool isEndDispatch)
        {
            //伤害减免
			if (damage >= minRemitDamage)
			{
				// 有吸收上限
				if(damage <= maxRemitDamage)
				{
					damage = 0;
					source.OutClientState = (byte)XmdsCommonServer.Plugin.XmdsVirtual.UnitHitEventState.Absorb;
				}
				else
				{
					damage -= maxRemitDamage;
				}

                hitted.mUnit.removeBuff(this.BindBuffID);
            }
            return damage;
        }
    }
}