using ProjectM.Simulation;
using Unity.Entities;
using Unity.NetCode;
using UnityEngine;

namespace ProjectM.Client
{
    /// <summary>
    /// Client-side boon-pick sender: a static enqueue (the Step-14 3-card modal / execute_code) drained into
    /// <see cref="BoonPickRequest"/> RPCs. Carries only the option INDEX — the server resolves it against the
    /// sender's own authoritative <c>BoonOffer</c> and validates lifecycle/pending, so a stale or forged pick is
    /// simply dropped. Statics reset on play-enter (the stale-bridge hazard).
    /// </summary>
    [WorldSystemFilter(WorldSystemFilterFlags.ClientSimulation)]
    public partial class BoonSendSystem : SystemBase
    {
        static int s_Pending;
        static byte s_PendingIndex;

        [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.SubsystemRegistration)]
        static void ResetStatics()
        {
            s_Pending = 0;
            s_PendingIndex = 0;
        }

        /// <summary>Queue a boon pick (0/1/2). The HUD card click + execute_code drive this.</summary>
        public static void PickBoon(byte optionIndex)
        {
            s_PendingIndex = optionIndex;
            s_Pending++;
        }

        protected override void OnCreate()
        {
            RequireForUpdate<NetworkId>();
        }

        protected override void OnUpdate()
        {
            while (s_Pending > 0)
            {
                s_Pending--;
                var req = EntityManager.CreateEntity(typeof(BoonPickRequest), typeof(SendRpcCommandRequest));
                EntityManager.SetComponentData(req, new BoonPickRequest { Index = s_PendingIndex });
            }
        }
    }
}