// Assets/_Project/Scripts/Gameplay/Draft/BuilderEffectUpgradeDraftOption.cs
using UnityEngine;
using TD.Core;
using TD.Gameplay.BuilderEffects;

namespace TD.Gameplay.Draft
{
    /// <summary>
    /// Draft choice — "upgrade a builder effect you already have". Replaces
    /// <see cref="BaseKind"/> with <see cref="UpgradedKind"/> in the player's
    /// <see cref="BuilderUpgradeManager"/>.
    /// </summary>
    /// <remarks>
    /// Mirrors <see cref="BuilderEffectDraftOption"/>, but swaps rather than adds. Only offered
    /// while the player currently has <see cref="BaseKind"/> granted — once taken,
    /// <see cref="BaseKind"/> is removed, which automatically makes this option (and any sibling
    /// upgrade branching off the same base) invalid for future drafts.
    /// </remarks>
    [CreateAssetMenu(fileName = "BuilderEffectUpgradeOption",
                      menuName = "TD/Draft/Builder Effect Upgrade Option")]
    public class BuilderEffectUpgradeDraftOption : DraftOption
    {
        [Header("Payload")]
        [Tooltip("The builder effect this option upgrades from.")]
        public BuilderEffectKind BaseKind;

        [Tooltip("The builder effect this option upgrades to.")]
        public BuilderEffectKind UpgradedKind;

        public override bool IsValidFor(ulong clientId)
        {
            var upgrades = BuilderUpgradeManager.GetForClient(clientId);
            return upgrades != null && upgrades.PlayerHasEffect(BaseKind);
        }

        public override bool ServerApply(ulong clientId)
        {
            var upgrades = BuilderUpgradeManager.GetForClient(clientId);
            return upgrades != null && upgrades.ServerUpgradeEffect(BaseKind, UpgradedKind);
        }
    }
}