using Continentis.MainGame;
using Continentis.MainGame.Character;
using SLSUtilities.General;

namespace Continentis.Mods.Basic.Buffs
{
    /// <summary>
    /// 蛊咒（Darkness 元素）：被动削减承载者的治疗效果 33%（固定值，不随层数变化）。
    /// 每回合结束时层数 -1，层数归零后自动移除，治疗倍率同时恢复正常。
    /// 层数仅决定持续时间，不影响削减幅度。
    /// </summary>
    public sealed class Hex : CharacterCombatBuffBase
    {
        private const float HEALING_REDUCTION = -0.33f;

        public Hex(int stack)
        {
            Initialize(BuffType.Negative, BuffDispelLevel.Basic);

            this.contentSubmodule = new ContentSubmodule(this)
                .AddParameterGetter("Stack", () => unitedStackSubmodule.stackAmount.ToString());

            this.iconSubmodule = new IconSubmodule(this);

            this.unitedStackSubmodule = new UnitedStackSubmodule(this, stack);

            // 被动属性：治疗效果 -33%（通过 generalAttributeSubmodule 叠入角色属性系统）
            this.generalAttributeSubmodule = new GeneralAttributeSubmodule(this);
            this.generalAttributeSubmodule.numericChange[CharacterAttributes.HealingGainMultiplier]
                = HEALING_REDUCTION;

            this.eventSubmodule = new EventSubmodule(this);
            this.eventSubmodule.onRoundEnd.Add("Hex_Decay", new PrioritizedAction(OnRoundEnd));
        }

        private void OnRoundEnd()
        {
            unitedStackSubmodule.ReduceStack(1);
            iconSubmodule.Update();
        }

        public override bool OnBuffApply(out CharacterCombatBuffBase existingBuff)
        {
            MainGameManager.Instance.basePrefabs.GenerateInfoText(
                contentSubmodule.displayName, attachedCharacter.characterView);

            // 若已存在：叠加持续时间（治疗削减量不变，仍为固定 33%）
            if (FindExistingSameBuff(out existingBuff))
            {
                existingBuff.unitedStackSubmodule.AddStack(this.unitedStackSubmodule.stackAmount);
                return false;
            }

            return true;
        }
    }
}