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

namespace Continentis.Mods.Basic.Cards
{
    /// <summary>
    /// 强酸箭矢：对单体目标先减少格挡，然后造成魔法伤害并施加腐蚀 Buff。
    /// </summary>
    public class AcidArrow : CardLogicBase
    {
        private const string BLOCK_REDUCTION     = "Block_Reduction";
        private const string BUFF_CORROSION_STACK = "Buff_Corrosion_Stack";

        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(() =>
                {
                    // 第一步：减少目标格挡，Clamp 至 0
                    target.ModifyAndClampAttribute(CharacterAttributes.Block, -GetAttribute(BLOCK_REDUCTION));

                    // 第二步：造成伤害并施加腐蚀
                    AttackContext ctx = PhysicsCtx;
                    AttackTarget(target, GetTargetedFinalDamage(target, ctx), ctx);
                    CreateCharacterBuff<Corrosion>(GetAttribute(BUFF_CORROSION_STACK)).Apply(target, user, this);
                })
            ));
        }

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