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 CommonLang;
using CommonAI.Data;

namespace XmdsCommonSkill.Plugin.Buffs
{
	/// <summary>
	/// 攻击范围回血
	/// </summary>
	public class XmdsBuff_AttackRoundAddHP : XmdsBuffBase
	{
		public int totalAddHp = -1;                 //-1为不限制
        public float damageToHp = 0.1f;
        public int AddHPRange = 5;                  //回复范围

		//buff创建者
		private XmdsVirtual buffSender = null;
		private int mHandleUUID = 0;

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

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

			ret.totalAddHp = this.totalAddHp;
			ret.damageToHp = this.damageToHp;
			ret.AddHPRange = this.AddHPRange;

			base.CopyTo(other);
		}

		protected override void OnBuffBegin(XmdsCommonServer.Plugin.XmdsVirtual hitter, XmdsCommonServer.Plugin.XmdsVirtual attacker, InstanceUnit.BuffState state)
        {
			this.buffSender = attacker;

            //注册监听.
            mHandleUUID = hitter.RegistOnHitOther(OnHandleHitOther, null);
        }

        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 OnHandleHitOther(float damage, XmdsVirtual hitted, XmdsVirtual attacker, AttackSource source, 
            ref XmdsVirtual.AtkResult result, DamageType damageType, GameSkill skill, ref bool isEndDispatch)
        {
            int AddHP = CUtils.CastInt(damage * this.damageToHp);

            if (AddHP > 0)
			{            
                if(totalAddHp != -1)
                {
                    AddHP = Math.Min(AddHP, totalAddHp);
                    totalAddHp -= AddHP;
                    if(totalAddHp <= 0)
                    {
                        hitted.mUnit.removeBuff(this.BindBuffID);
                    }
                }

                //血量平分
                //治疗自己和队友
                using (var list = ListObjectPool<InstanceUnit>.AllocAutoRelease())
                {
                    attacker.mUnit.Parent.getObjectsRoundRange<InstanceUnit>(
                        (obj, dx, dy, dr) =>
                        {
                            var u = obj as InstanceUnit;

                            //己方单位.
                            if (attacker.IsAllies(u.Virtual as XmdsVirtual, true, true))
                            {
                                return CMath.includeRoundPoint(dx, dy, dr, u.X, u.Y);
                            }

                            return false;
                        },
                        attacker.mUnit.X,
                        attacker.mUnit.Y,
                        AddHPRange,
                        list, attacker.mUnit.AoiStatus);


                    if(list.Count > 0)
                    {
                        int avgAdd = Math.Max(1, AddHP / list.Count);
                        //加血 & 加速
                        for (int i = 0; i < list.Count; i++)
                        {
                            list[i].AddHP(avgAdd, attacker.mUnit);
                        }
                    }                    
                }
            }

			return damage;
        }

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