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>
    /// 裂伤：对单体目标造成物理伤害，施加易伤 Buff，
    /// 并额外对目标施加等同于其身上易伤剩余回合数的流血层数。
    /// </summary>
    public class Laceration : CardLogicBase
    {
        private const string BUFF_VULNERABLE_COUNT = "Buff_Vulnerable_Count";

        private AttackContext PhysicsCtx => AttackContext.Default(card)
            .WithDamageKeywords(CardKeywords.Physics);

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

        /// <summary>选中目标时更新伤害预览。</summary>
        public override void TargetingEffect(CharacterBase target)
        {
            card.SetAttribute("Display_Damage", GetTargetedFinalDamage(target, PhysicsCtx));
        }

        /// <summary>取消选中时以无目标模式刷新预览。</summary>
        public override void UntargetingEffect()
        {
            card.SetAttribute("Display_Damage", GetNoTargetFinalDamage(PhysicsCtx));
        }

        public override CommandGroup PlayEffect(List<CharacterBase> targetList)
        {
            return ForEachTarget(targetList, target => Cmd.Sequential(
                new Cmd_PlayAnimation(user.characterView, "Attack"),
                Cmd.Do(() =>
                {
                    AttackContext ctx = PhysicsCtx;
                    AttackTarget(target, GetTargetedFinalDamage(target, ctx), ctx);

                    // 施加易伤
                    CreateCharacterBuff<Vulnerable>(GetAttribute(BUFF_VULNERABLE_COUNT)).Apply(target, user, this);

                    // 读取目标身上易伤的剩余回合数，以此作为流血层数
                    if (target.combatBuffSubmodule.TryGetBuff<Vulnerable>(out Vulnerable vulnerable))
                    {
                        int bleedStack = vulnerable.actionCountSubmodule.remainingCount;
                        if (bleedStack > 0)
                        {
                            CreateCharacterBuff<Bleed>(bleedStack).Apply(target, user, this);
                        }
                    }
                })
            ));
        }

        public override void ApplyAttributeChangesByCard()
        {
            LogicComponent<CardLogicComponent_Attack>().SetDamage_Physics();
        }
    }
}