using Content.Shared.Station;

namespace Content.Client.Station;

/// <summary>
/// This handles letting the client know stations are a thing. Only really used by an admin menu.
/// </summary>
public sealed class StationSystem : EntitySystem
{

    private readonly HashSet<EntityUid> _stations = new();

    /// <summary>
    /// All stations that currently exist.
    /// </summary>
    /// <remarks>
    /// I'd have this just invoke an entity query, but we're on the client and the client barely knows about stations.
    /// </remarks>
    public IReadOnlySet<EntityUid> Stations => _stations;

    /// <inheritdoc/>
    public override void Initialize()
    {
        SubscribeNetworkEvent<StationsUpdatedEvent>(StationsUpdated);
    }

    private void StationsUpdated(StationsUpdatedEvent ev)
    {
        _stations.Clear();
        _stations.UnionWith(ev.Stations);
    }
}