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

namespace Continentis.Mods.Basic.Cards
{
    /// <summary>
    /// 猛毒喷射：对主目标施加腐蚀 Buff，
    /// 并从剩余敌人中随机选取 Extra_Target_Count 个额外目标（不可重复）同样施加腐蚀 Buff。
    /// targetCount = 1，玩家手动指定主目标；额外目标由 PlayEffect 内部随机决定。
    /// </summary>
    public class VenomSpray : CardLogicBase
    {
        private const string BUFF_CORROSION_STACK = "Buff_Corrosion_Stack";
        private const string EXTRA_TARGET_COUNT   = "Extra_Target_Count";

        public override CommandGroup PlayEffect(List<CharacterBase> targetList)
        {
            CharacterBase mainTarget = targetList[0];
            int corrosionStack = GetAttribute(BUFF_CORROSION_STACK);

            // 从所有敌人中排除主目标，不放回随机抽取额外目标
            List<CharacterBase> pool = CombatMainManager.Instance.characterController.GetAllEnemies(user);
            pool.Remove(mainTarget);

            int extraCount = Mathf.Min(GetAttribute(EXTRA_TARGET_COUNT), pool.Count);
            List<CharacterBase> extraTargets = new List<CharacterBase>();
            for (int i = 0; i < extraCount; i++)
            {
                int index = Random.Range(0, pool.Count);
                extraTargets.Add(pool[index]);
                pool.RemoveAt(index);
            }

            return Cmd.Sequential(
                new Cmd_PlayAnimation(user.characterView, "Skill"),
                Cmd.Do(() =>
                {
                    CreateCharacterBuff<Corrosion>(corrosionStack).Apply(mainTarget, user, this);
                    foreach (CharacterBase extra in extraTargets)
                    {
                        CreateCharacterBuff<Corrosion>(corrosionStack).Apply(extra, user, this);
                    }
                })
            );
        }
    }
}