namespace ProjectM.Simulation
{
    /// <summary>One base "prep loadout" option: spend a base resource before launch for a RUN-SCOPED stat buff
    /// (stripped on the Returning edge like a boon). Mechanical fields only — the HUD supplies display labels.</summary>
    public struct PrepRow
    {
        public byte Id;
        public byte CostResId; // ResourceId.*
        public int Cost;
        public byte Target;    // StatTarget
        public byte Op;        // ModOp
        public float Value;
    }

    /// <summary>
    /// The base PREP-LOADOUT catalog (DR-046): the player funds each run's power from base resources at Staging. A
    /// purchase appends ONE run-scoped <see cref="StatModifier"/> in the prep SourceId band
    /// (<see cref="Tuning.PrepSourceIdBase"/> + Id), which <see cref="Server"/>'s PrepPurchaseSystem gates once-per-run
    /// by that SourceId's PRESENCE (its lifetime == the band, stripped on Returning — so it re-buys next run for free,
    /// no separate latch). A plain managed static table (read by the non-Burst receiver + the managed HUD).
    /// </summary>
    public static class PrepCatalog
    {
        public static readonly PrepRow[] Rows =
        {
            new PrepRow { Id = 0, CostResId = ResourceId.Ore,     Cost = 30, Target = (byte)StatTarget.MaxHealth,   Op = (byte)ModOp.Flat,        Value = 30f },
            new PrepRow { Id = 1, CostResId = ResourceId.Biomass, Cost = 40, Target = (byte)StatTarget.MoveSpeed,   Op = (byte)ModOp.PercentMult, Value = 0.12f },
            new PrepRow { Id = 2, CostResId = ResourceId.Aether,  Cost = 25, Target = (byte)StatTarget.MeleeDamage, Op = (byte)ModOp.PercentMult, Value = 0.20f },
            new PrepRow { Id = 3, CostResId = ResourceId.Aether,  Cost = 25, Target = (byte)StatTarget.Damage,      Op = (byte)ModOp.PercentMult, Value = 0.20f },
        };

        public static int Count => Rows.Length;

        public static bool TryGet(byte id, out PrepRow row)
        {
            for (int i = 0; i < Rows.Length; i++)
                if (Rows[i].Id == id) { row = Rows[i]; return true; }
            row = default;
            return false;
        }
    }
}