Gas tank internals alerts (#9567)

Content.Server/Alert/Click/ToggleInternals.cs

@@ -0,0 +1,53 @@
+using Content.Server.Atmos.EntitySystems;
+using Content.Server.Body.Components;
+using Content.Server.Body.Systems;
+using Content.Server.Popups;
+using Content.Server.Shuttles.Systems;
+using Content.Shared.Alert;
+using Content.Shared.Shuttles.Components;
+using JetBrains.Annotations;
+using Robust.Shared.Player;
+
+namespace Content.Server.Alert.Click;
+
+/// <summary>
+/// Attempts to toggle the internals for a particular entity
+/// </summary>
+[UsedImplicitly]
+[DataDefinition]
+public sealed class ToggleInternals : IAlertClick
+{
+    public void AlertClicked(EntityUid player)
+    {
+        var entManager = IoCManager.Resolve<IEntityManager>();
+
+        if (!entManager.TryGetComponent<InternalsComponent>(player, out var internals)) return;
+
+        var popups = entManager.EntitySysManager.GetEntitySystem<PopupSystem>();
+        var internalsSystem = entManager.EntitySysManager.GetEntitySystem<InternalsSystem>();
+
+        // Toggle off if they're on
+        if (internalsSystem.AreInternalsWorking(internals))
+        {
+            internalsSystem.DisconnectTank(internals);
+            return;
+        }
+
+        // If they're not on then check if we have a mask to use
+        if (internals.BreathToolEntity == null)
+        {
+            popups.PopupEntity(Loc.GetString("internals-no-breath-tool"), player, Filter.Entities(player));
+            return;
+        }
+
+        var tank = internalsSystem.FindBestGasTank(internals);
+
+        if (tank == null)
+        {
+            popups.PopupEntity(Loc.GetString("internals-no-tank"), player, Filter.Entities(player));
+            return;
+        }
+
+        entManager.EntitySysManager.GetEntitySystem<GasTankSystem>().ConnectToInternals(tank);
+    }
+}