namespace HSchool.Server.Game;

/// <summary>
/// Work item handed from a request or connection thread to the loop thread. Schools are
/// single-threaded, so every mutation and every read of live state arrives as one of these.
/// </summary>
internal abstract record GameCommand
{
    internal sealed record CreateSchool(
        string Name,
        DateTime StartDate,
        TaskCompletionSource<SchoolCreationOutcome> Result) : GameCommand;

    internal sealed record DeleteSchool(int SchoolId, TaskCompletionSource<bool> Result) : GameCommand;

    internal sealed record SuggestName(TaskCompletionSource<string> Result) : GameCommand;

    /// <summary>A connection starts watching a school; its calendar starts running.</summary>
    internal sealed record OpenSchool(uint PlayerId, int SchoolId) : GameCommand;

    /// <summary>
    /// Stops watching. The school id travels with the command because the connection may already
    /// be gone from the registry by the time the loop thread gets here.
    /// </summary>
    internal sealed record CloseSchool(uint PlayerId, int SchoolId) : GameCommand;

    internal sealed record SetRunning(uint PlayerId, bool Running) : GameCommand;

    internal sealed record SetSpeed(uint PlayerId, byte SpeedIndex) : GameCommand;
}