tbd-station-14/Content.Shared/Doors/Systems/SharedFirelockSystem.cs

using Content.Shared.Access.Systems;
using Content.Shared.Doors.Components;
using Content.Shared.Popups;
using Content.Shared.Prying.Components;
using Robust.Shared.Timing;

namespace Content.Shared.Doors.Systems;

public abstract class SharedFirelockSystem : EntitySystem
{
    [Dependency] private readonly AccessReaderSystem _accessReaderSystem = default!;
    [Dependency] private readonly SharedPopupSystem _popupSystem = default!;
    [Dependency] private readonly SharedAppearanceSystem _appearance = default!;
    [Dependency] private readonly SharedDoorSystem _doorSystem = default!;
    [Dependency] private readonly IGameTiming _gameTiming = default!;

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

        SubscribeLocalEvent<FirelockComponent, DoorStateChangedEvent>(OnUpdateState);

        // Access/Prying
        SubscribeLocalEvent<FirelockComponent, BeforeDoorOpenedEvent>(OnBeforeDoorOpened);
        SubscribeLocalEvent<FirelockComponent, GetPryTimeModifierEvent>(OnDoorGetPryTimeModifier);
        SubscribeLocalEvent<FirelockComponent, PriedEvent>(OnAfterPried);

        // Visuals
        SubscribeLocalEvent<FirelockComponent, MapInitEvent>(UpdateVisuals);
        SubscribeLocalEvent<FirelockComponent, ComponentStartup>(UpdateVisuals);
    }

    public bool EmergencyPressureStop(EntityUid uid, FirelockComponent? firelock = null, DoorComponent? door = null)
    {
        if (!Resolve(uid, ref firelock, ref door))
            return false;

        if (door.State != DoorState.Open
            || firelock.EmergencyCloseCooldown != null
            && _gameTiming.CurTime < firelock.EmergencyCloseCooldown)
            return false;

        if (!_doorSystem.TryClose(uid, door))
            return false;

        return _doorSystem.OnPartialClose(uid, door);
    }

    private void OnUpdateState(EntityUid uid, FirelockComponent component, DoorStateChangedEvent args)
    {
        var ev = new BeforeDoorAutoCloseEvent();
        RaiseLocalEvent(uid, ev);
        UpdateVisuals(uid, component, args);
        if (ev.Cancelled)
        {
            return;
        }

        _doorSystem.SetNextStateChange(uid, component.AutocloseDelay);
    }

    #region Access/Prying

    private void OnBeforeDoorOpened(EntityUid uid, FirelockComponent component, BeforeDoorOpenedEvent args)
    {
        // Give the Door remote the ability to force a firelock open even if it is holding back dangerous gas
        var overrideAccess = (args.User != null) && _accessReaderSystem.IsAllowed(args.User.Value, uid);

        if (!component.Powered || (!overrideAccess && component.IsLocked))
            args.Cancel();
    }

    private void OnDoorGetPryTimeModifier(EntityUid uid, FirelockComponent component, ref GetPryTimeModifierEvent args)
    {
        if (component.Temperature)
        {
            _popupSystem.PopupClient(Loc.GetString("firelock-component-is-holding-fire-message"),
                uid, args.User, PopupType.MediumCaution);
        }
        else if (component.Pressure)
        {
            _popupSystem.PopupClient(Loc.GetString("firelock-component-is-holding-pressure-message"),
                uid, args.User, PopupType.MediumCaution);
        }

        if (component.IsLocked)
            args.PryTimeModifier *= component.LockedPryTimeModifier;
    }

    private void OnAfterPried(EntityUid uid, FirelockComponent component, ref PriedEvent args)
    {
        component.EmergencyCloseCooldown = _gameTiming.CurTime + component.EmergencyCloseCooldownDuration;
    }

    #endregion

    #region Visuals

    private void UpdateVisuals(EntityUid uid, FirelockComponent component, EntityEventArgs args) => UpdateVisuals(uid, component);

    private void UpdateVisuals(EntityUid uid,
        FirelockComponent? firelock = null,
        DoorComponent? door = null,
        AppearanceComponent? appearance = null)
    {
        if (!Resolve(uid, ref door, ref appearance, false))
            return;

        // only bother to check pressure on doors that are some variation of closed.
        if (door.State != DoorState.Closed
            && door.State != DoorState.Welded
            && door.State != DoorState.Denying)
        {
            _appearance.SetData(uid, DoorVisuals.ClosedLights, false, appearance);
            return;
        }

        if (!Resolve(uid, ref firelock, ref appearance, false))
            return;

        _appearance.SetData(uid, DoorVisuals.ClosedLights, firelock.IsLocked, appearance);
    }

    #endregion
}