using Cielonos.MainGame.Characters;
using UnityEngine;

namespace Cielonos.MainGame.Inventory.Collections
{
    /// <summary>
    /// 量子护盾发生器 / Quantum Shield Generator
    /// 每次首次进入新区域时，将护盾补至 ShieldRecover 下限。
    /// Shield 可超量累积，无上限。
    /// </summary>
    public class QuantumShieldGenerator : PassiveEquipmentBase
    {
        private const string ItemAttrShieldRecover = "ShieldRecover";

        public override void OnObtained()
        {
            base.OnObtained();
            RunManager.Instance.OnZoneEntered += OnZoneEntered;
        }

        public override void OnDiscarded()
        {
            RunManager.Instance.OnZoneEntered -= OnZoneEntered;
            base.OnDiscarded();
        }

        /// <summary>
        /// 玩家进入区域时触发。
        /// 仅首次进入该区域时将护盾补至 ShieldRecover 下限。
        /// </summary>
        private void OnZoneEntered(ZoneEntryContext context)
        {
            if (!context.isFirstVisit) return;

            float shieldRecover = passiveAttributeSm.GetItemAttribute(ItemAttrShieldRecover);
            if (shieldRecover <= 0f) return;

            float currentShield = player.attributeSm[CharacterAttribute.Shield];
            if (currentShield < shieldRecover)
            {
                int addValue = Mathf.RoundToInt(shieldRecover - currentShield);
                player.attributeSm[CharacterAttribute.Shield] = shieldRecover;
                MainGameBaseCollection.Instance.InfoText()?.Spawn(player.centerPosition, "+" + addValue);
            }
        }
    }
}