using CommonAI.Zone.Instance;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using XmdsCommonServer.Plugin;
using XmdsCommonServer.Plugin.XmdsSkillTemplate.Skills;

namespace XmdsCommonSkill.Plugin.Buffs
{
    /// <summary>
    /// 与其他单位关联.
    /// </summary>
    public class XmdsBuff_UnitLink : XmdsBuffBase
    {
        /// <summary>
        /// 关联单位.
        /// </summary>
        public XmdsVirtual LinkTarget = null;

        public XmdsVirtual Owner = null;

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


		public override void CopyTo(UnitBuff other)
		{
			var ret = other as XmdsBuff_UnitLink;

			ret.LinkTarget = this.LinkTarget;

			//不释放，可能会导致内存泄露.
			this.LinkTarget = null;

			base.CopyTo(other);
		}

		protected override void OnBuffBegin(XmdsCommonServer.Plugin.XmdsVirtual hitter, XmdsCommonServer.Plugin.XmdsVirtual attacker, InstanceUnit.BuffState state)
        {
            //通过编辑器设置无敌效果.
            XmdsVirtual.FormatLog("单位 {0} 关联开始", hitter.mInfo.Name);

            Owner = hitter;

            if (LinkTarget != null)
            {
                LinkTarget.mUnit.OnDead += MUnit_OnDead;
            }
        }

        private void MUnit_OnDead(InstanceUnit unit, InstanceUnit attacker)
        {
            if (Owner != null)
            {
                Owner.mUnit.removeBuff(BindBuffID);
            }

            if (LinkTarget != null)
            {
                LinkTarget.mUnit.OnDead -= MUnit_OnDead;
            }
        }

        protected override void OnBuffEnd(XmdsCommonServer.Plugin.XmdsVirtual hitter, InstanceUnit.BuffState state, bool replace)
        {
            //通过编辑器设置无敌效果.
            XmdsVirtual.FormatLog("单位 {0} 关联结束", hitter.mInfo.Name);
            if (LinkTarget != null)
            {
                if (LinkTarget.mUnit.IsDead() == false)
                {
                    LinkTarget.mUnit.kill(null, false);
                }
                LinkTarget = null;
            }
            Owner = null;
        }

        protected override void OnDispose()
        {
            this.LinkTarget = null;
            this.Owner = null;
            base.OnDispose();
        }
    }
}