using System.Threading;
using Content.Server.Chat.Managers;
using Content.Server.GameTicking.Rules.Components;
using Timer = Robust.Shared.Timing.Timer;

namespace Content.Server.GameTicking.Rules;

public sealed class MaxTimeRestartRuleSystem : GameRuleSystem<MaxTimeRestartRuleComponent>
{
    [Dependency] private readonly IChatManager _chatManager = default!;

    public override void Initialize()
    {
        base.Initialize();

        SubscribeLocalEvent<GameRunLevelChangedEvent>(RunLevelChanged);
    }

    protected override void Started(EntityUid uid, MaxTimeRestartRuleComponent component, GameRuleComponent gameRule, GameRuleStartedEvent args)
    {
        base.Started(uid, component, gameRule, args);

        if(GameTicker.RunLevel == GameRunLevel.InRound)
            RestartTimer(component);
    }

    protected override void Ended(EntityUid uid, MaxTimeRestartRuleComponent component, GameRuleComponent gameRule, GameRuleEndedEvent args)
    {
        base.Ended(uid, component, gameRule, args);

        StopTimer(component);
    }

    public void RestartTimer(MaxTimeRestartRuleComponent component)
    {
        // TODO FULL GAME SAVE
        component.TimerCancel.Cancel();
        component.TimerCancel = new CancellationTokenSource();
        Timer.Spawn(component.RoundMaxTime, () => TimerFired(component), component.TimerCancel.Token);
    }

    public void StopTimer(MaxTimeRestartRuleComponent component)
    {
        component.TimerCancel.Cancel();
    }

    private void TimerFired(MaxTimeRestartRuleComponent component)
    {
        GameTicker.EndRound(Loc.GetString("rule-time-has-run-out"));

        _chatManager.DispatchServerAnnouncement(Loc.GetString("rule-restarting-in-seconds",("seconds", (int) component.RoundEndDelay.TotalSeconds)));

        // TODO FULL GAME SAVE
        Timer.Spawn(component.RoundEndDelay, () => GameTicker.RestartRound());
    }

    private void RunLevelChanged(GameRunLevelChangedEvent args)
    {
        var query = EntityQueryEnumerator<MaxTimeRestartRuleComponent, GameRuleComponent>();
        while (query.MoveNext(out var uid, out var timer, out var gameRule))
        {
            if (!GameTicker.IsGameRuleActive(uid, gameRule))
                return;

            switch (args.New)
            {
                case GameRunLevel.InRound:
                    RestartTimer(timer);
                    break;
                case GameRunLevel.PreRoundLobby:
                case GameRunLevel.PostRound:
                    StopTimer(timer);
                    break;
            }
        }
    }
}