using System.Collections.Generic;
using Continentis.MainGame;
using Continentis.MainGame.Card;
using Continentis.MainGame.Character;
using Continentis.MainGame.Commands;
using Continentis.Mods.Basic.Buffs;
using SLSUtilities.General;

namespace Continentis.Mods.Basic.Cards
{
    /// <summary>
    /// 至圣斩（DivineSmite）：
    /// 造成物理伤害和多段光属性魔法伤害，光伤害段数等于连续打出该牌的次数，最后施加致盲Buff。
    /// </summary>
    public class DivineSmite : CardLogicBase
    {
        // 游戏字典里定义的伤害及Buff参数键值点
        private const string DAMAGE_PHYSICS = "Damage_Physics";
        private const string DAMAGE_LIGHT   = "Damage_Light";
        private const string BUFF_BLIND_COUNT = "Buff_Blind_Count";

        /// <summary>
        /// 物理伤害的上下文属性通道
        /// </summary>
        private AttackContext PhysicsCtx => AttackContext.Default(card)
            .WithDamageKeywords("Physics")
            .WithBaseDamageAttribute(DAMAGE_PHYSICS);

        /// <summary>
        /// 光属性魔法伤害的上下文属性通道
        /// </summary>
        private AttackContext LightCtx => AttackContext.Default(card)
            .WithDamageKeywords("Light")
            .WithBaseDamageAttribute(DAMAGE_LIGHT);

        public override void SetUpLogicComponents()
        {
            AddLogicComponent<CardLogicComponent_Attack>();
        }

        /// <summary>
        /// 选中目标时，预览最终会造成的伤害数值和攻击段数
        /// </summary>
        public override void TargetingEffect(CharacterBase target)
        {
            card.SetAttribute("Display_Damage_Physics", GetTargetedFinalDamage(target, PhysicsCtx));
            card.SetAttribute("Display_Damage_Light", GetTargetedFinalDamage(target, LightCtx));
            
            // 为界面显示专门设定一个动态的“光属性连击次数”属性
            int lightTimes = GetConsecutiveDivineSmiteCount();
            card.SetAttribute("Hit_Count_Light", lightTimes);
        }

        /// <summary>
        /// 没有目标、或者取消选中时的默认面板预期伤害
        /// </summary>
        public override void UntargetingEffect()
        {
            card.SetAttribute("Display_Damage_Physics", GetNoTargetFinalDamage(PhysicsCtx));
            card.SetAttribute("Display_Damage_Light", GetNoTargetFinalDamage(LightCtx));
            
            int lightTimes = GetConsecutiveDivineSmiteCount();
            card.SetAttribute("Hit_Count_Light", lightTimes);
        }

        public override CommandGroup PlayEffect(List<CharacterBase> targetList)
        {
            // 通过过往卡牌出牌记录找到需要触发多少次光属性攻击
            int lightTimes = GetConsecutiveDivineSmiteCount();
            
            return ForEachTarget(targetList, target => Cmd.Sequential(
                new Cmd_PlayAnimation(user.characterView, "Attack"),
                Cmd.Do(() =>
                {
                    // 1. 触发一段基础物理伤害
                    AttackContext physCtx = PhysicsCtx;
                    AttackTarget(target, GetTargetedFinalDamage(target, physCtx), physCtx);

                    // 2. 根据连续使用的次数，循环触发光属性魔法追击
                    AttackContext lightCtx = LightCtx;
                    for (int i = 0; i < lightTimes; i++)
                    {
                        AttackTarget(target, GetTargetedFinalDamage(target, lightCtx), lightCtx);
                    }

                    // 3. 结算后对目标挂载致盲 (Blind) 状态
                    int blindStacks = GetAttribute(BUFF_BLIND_COUNT);
                    CreateCharacterBuff<Blind>(blindStacks).Apply(target, user, this);
                })
            ));
        }

        public override void ApplyAttributeChangesByCard()
        {
            // 在卡牌数据更新层对物理伤害与默认(光属性)伤害渠道做双重初始化
            LogicComponent<CardLogicComponent_Attack>().SetDamage_Physics(DAMAGE_PHYSICS);
            LogicComponent<CardLogicComponent_Attack>().SetDamage_Default(DAMAGE_LIGHT);
        }
        
        /// <summary>
        /// 从历史行动记录中寻找过往连续出过的本牌数量，用于充能和统计光爆次数。
        /// </summary>
        private int GetConsecutiveDivineSmiteCount()
        {
            if (user.recordSubmodule == null || user.recordSubmodule.actionRecords == null) return 1;
            
            int count = 1; // 包含当前准备打出的这一张本身
            int cardsSeen = 0;
            for (int i = user.recordSubmodule.actionRecords.Count - 1; i >= 0; i--)
            {
                var record = user.recordSubmodule.actionRecords[i];
                for (int j = record.cardsPlayed.Count - 1; j >= 0; j--)
                {
                    if (cardsSeen > 0)
                    {
                        if (record.cardsPlayed[j].cardLogic is DivineSmite)
                        {
                            count++;
                        }
                        else
                        {
                            return count;
                        }
                    }
                    cardsSeen++;
                }
            }
            return count;
        }
    }
}