using System.Collections.Generic;
using Continentis.MainGame;
using Continentis.MainGame.Card;
using Continentis.MainGame.Character;
using Continentis.MainGame.Commands;
using SLSUtilities.General;
using UnityEngine;

namespace Continentis.Mods.Basic.Cards
{
    /// <summary>
    /// 盾牌猛击（ShieldSlam）：
    /// 对单体造成等同于当前格挡值的物理伤害，并消耗自身一半的格挡。
    /// </summary>
    public class ShieldSlam : CardLogicBase
    {
        private AttackContext PhysicsCtx => AttackContext.Default(card).WithDamageKeywords("Physics");
        private float Block => user?.GetAttribute("Block") ?? 0;

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

        public override void TargetingEffect(CharacterBase target)
        {
            if (user != null) card.SetAttribute("Damage", Block);
            card.SetAttribute("Display_Damage", GetTargetedFinalDamage(target, PhysicsCtx));
        }

        public override void UntargetingEffect()
        {
            if (user != null) card.SetAttribute("Damage", Block);
            card.SetAttribute("Display_Damage", GetNoTargetFinalDamage(PhysicsCtx));
        }

        public override CommandGroup PlayEffect(List<CharacterBase> targetList)
        {
            CommandGroup mainGroup = new CommandGroup();

            mainGroup.AddCommand(ForEachTarget(targetList, target => Cmd.Sequential(
                new Cmd_PlayAnimation(user.characterView, "Attack"),
                Cmd.Do(() =>
                {
                    // 在造成伤害前，强制按当前的 Block 更新一下基础伤害，避免状态延迟带来的数值偏差
                    if (user != null) card.SetAttribute("Damage", Block);

                    AttackContext physCtx = PhysicsCtx;
                    AttackTarget(target, GetTargetedFinalDamage(target, physCtx), physCtx);
                })
            )));

            // 格挡削减放置于 ForEachTarget 循环之外，保证无论造成几次伤害、目标有几个，消耗仅仅执行一次
            mainGroup.AddCommand(Cmd.Do(() =>
            {
                if (user != null && Block > 0)
                {
                    int blockToConsume = Mathf.FloorToInt(Block / 2f);
                    user.ModifyAndClampAttribute(CharacterAttributes.Block, -blockToConsume);
                }
            }));

            return mainGroup;
        }

        public override void ApplyAttributeChangesByCard()
        {
            if (user != null)
            {
                card.SetAttribute("Damage", Block);
            }
            LogicComponent<CardLogicComponent_Attack>().SetDamage_Physics();
        }
    }
}