using System;
using BaseGames.Skills;

namespace BaseGames.Equipment
{
    /// <summary>
    /// 技能数值修改护符效果（架构 09_ProgressionModule §5）。
    /// 通过 SkillModifierRegistry 对指定技能的数值加成。
    /// </summary>
    [Serializable]
    public class SkillNumericModifierEffect : ICharmEffect
    {
        public string   TargetSkillId;
        public SkillStat Stat;
        public float    Delta;
        public bool     IsPercent;

        public void OnEquip(EquipmentContext ctx)
            => ctx.SkillMods?.Register(TargetSkillId, Stat, Delta, IsPercent);

        public void OnUnequip(EquipmentContext ctx)
            => ctx.SkillMods?.Unregister(TargetSkillId, Stat, Delta, IsPercent);

        public string GetEffectDescription()
            => $"{TargetSkillId}.{Stat} {(Delta >= 0 ? "+" : "")}{Delta}{(IsPercent ? "%" : "")}";
    }
}