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;
using UnityEngine;

namespace Continentis.Mods.Basic.Cards
{
    /// <summary>
    /// 炎枪术：先削减目标的格挡值，再对目标造成大量火焰伤害并施加灼烧 Buff。
    /// 格挡削减不受伤害加成影响，直接扣减固定值。
    /// </summary>
    public class FlameSpear : CardLogicBase
    {
        private const string BLOCK_REDUCTION   = "Block_Reduction";
        private const string BUFF_BURN_STACK = "Buff_Burn_Stack";

        private AttackContext FireCtx => AttackContext.Default(card)
            .WithDamageKeywords("Fire");

        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, FireCtx));
        }

        /// <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(FireCtx));
        }

        public override CommandGroup PlayEffect(List<CharacterBase> targetList)
        {
            return ForEachTarget(targetList, target => Cmd.Sequential(
                new Cmd_PlayAnimation(user.characterView, "Attack"),
                Cmd.Do(() =>
                {
                    // 削减格挡（直接扣减，不受任何加成影响）
                    int blockReduce = GetAttribute(BLOCK_REDUCTION);
                    int actualReduce = target.ModifyAndClampAttribute("Block", -blockReduce);
                    target.characterView.hudContainer.UpdateAllHUD();
                    //Debug.Log($"[FlameSpear] 削减 {target.data.displayName} 的格挡 {actualReduce} 点。");

                    // 火焰伤害
                    AttackContext ctx = FireCtx;
                    AttackTarget(target, GetTargetedFinalDamage(target, ctx), ctx);

                    // 灼烧
                    int burnStacks = GetAttribute(BUFF_BURN_STACK);
                    CreateCharacterBuff<Burn>(burnStacks).Apply(target, user, this);
                })
            ));
        }

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