using Unity.Burst;
using Unity.Collections;
using Unity.Entities;
using Unity.NetCode;

namespace EE2Clone.NetCode
{
    /// <summary>
    /// Server-side system that monitors for disconnected players and logs events.
    /// </summary>
    [WorldSystemFilter(WorldSystemFilterFlags.ServerSimulation)]
    public partial struct ConnectionMonitorSystem : ISystem
    {
        public void OnCreate(ref SystemState state)
        {
            state.RequireForUpdate<NetworkId>();
        }

        public void OnUpdate(ref SystemState state)
        {
            // Count active connections for logging/debugging
            int connectionCount = 0;
            foreach (var _ in SystemAPI.Query<RefRO<NetworkId>>()
                         .WithAll<NetworkStreamInGame>())
            {
                connectionCount++;
            }

            // Future: detect disconnections and handle AI takeover
        }
    }
}