using HSchool.Content;
using HSchool.People;
using HSchool.Server.Api;
using HSchool.Simulation;

namespace HSchool.Server.Game;

/// <summary>
/// Work item handed from a request or connection thread to the supervisor. Create, delete and
/// name suggestions stay here; open/close/running/speed/skip are forwarded to the school's worker.
/// </summary>
internal abstract record GameCommand
{
    internal sealed record CreateSchool(
        string Name,
        DateTime StartDate,
        IReadOnlyList<string>? ExtraModIds,
        MapLayout? Map,
        string? CountryId,
        string? NativeLanguage,
        int? Seed,
        TaskCompletionSource<SchoolCreationOutcome> Result) : GameCommand;

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

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

    /// <summary>A connection starts watching a school; clock frames follow from that worker.</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 supervisor 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;

    internal sealed record SkipEmpty(uint PlayerId) : GameCommand;

    /// <summary>Stops every worker, re-reads the save directory, starts workers from those files.</summary>
    internal sealed record ReloadSaves(TaskCompletionSource Result) : GameCommand;

    /// <summary>
    /// A worker thread ended on an exception. The supervisor owns the table, so the worker asks
    /// it to drop the school instead of removing itself.
    /// </summary>
    internal sealed record WorkerFailed(int SchoolId) : GameCommand;

    /// <summary>Live presence and needs for a diagnostic dump. Completes on that school's worker.</summary>
    internal sealed record DumpSchool(int SchoolId, TaskCompletionSource<SchoolLiveDump?> Result) : GameCommand;

    /// <summary>One person's card, including live needs. Completes on that school's worker thread.</summary>
    internal sealed record GetPerson(
        int SchoolId,
        string PersonId,
        string Locale,
        TaskCompletionSource<PersonCardResult> Result) : GameCommand;

    internal sealed record HireStaff(
        int SchoolId,
        string PersonId,
        string Position,
        TaskCompletionSource<StaffingOutcome> Result) : GameCommand;

    internal sealed record AssignSubject(
        int SchoolId,
        string PersonId,
        string Subject,
        TaskCompletionSource<StaffingOutcome> Result) : GameCommand;

    internal sealed record UnassignSubject(
        int SchoolId,
        string PersonId,
        string Subject,
        TaskCompletionSource<StaffingOutcome> Result) : GameCommand;

    internal sealed record PinLesson(
        int SchoolId,
        string ClassId,
        string Subject,
        string RoomId,
        int Day,
        int Period,
        TaskCompletionSource<TimetableOutcome> Result) : GameCommand;

    internal sealed record UnpinLesson(
        int SchoolId,
        string ClassId,
        string Subject,
        int Day,
        int Period,
        TaskCompletionSource<TimetableOutcome> Result) : GameCommand;
}