Resave every map (#15964)

Content.Server/Maps/ResaveCommand.cs

@@ -0,0 +1,55 @@
+using System.Linq;
+using Content.Server.Administration;
+using Content.Shared.Administration;
+using Robust.Server.GameObjects;
+using Robust.Server.Maps;
+using Robust.Shared.Console;
+using Robust.Shared.ContentPack;
+using Robust.Shared.Map;
+using Robust.Shared.Utility;
+
+namespace Content.Server.Maps;
+
+/// <summary>
+/// Loads every map and resaves it into the data folder.
+/// </summary>
+[AdminCommand(AdminFlags.Mapping)]
+public sealed class ResaveCommand : LocalizedCommands
+{
+    [Dependency] private readonly IEntityManager _entManager = default!;
+    [Dependency] private readonly IMapManager _mapManager = default!;
+    [Dependency] private readonly IResourceManager _res = default!;
+
+    public override string Command => "resave";
+
+    public override void Execute(IConsoleShell shell, string argStr, string[] args)
+    {
+        var loader = _entManager.System<MapLoaderSystem>();
+
+        foreach (var fn in _res.ContentFindFiles(new ResPath("/Maps/")))
+        {
+            var mapId = _mapManager.CreateMap();
+            _mapManager.AddUninitializedMap(mapId);
+            loader.Load(mapId, fn.ToString(), new MapLoadOptions()
+            {
+                StoreMapUids = true,
+                LoadMap = true,
+            });
+
+            var mapUid = _mapManager.GetMapEntityId(mapId);
+            var mapXform = _entManager.GetComponent<TransformComponent>(mapUid);
+
+            if (_entManager.HasComponent<LoadedMapComponent>(mapUid) || mapXform.ChildCount != 1)
+            {
+                loader.SaveMap(mapId, fn.ToString());
+            }
+            else
+            {
+
+                loader.Save(mapXform.ChildEntities.First(), fn.ToString());
+            }
+
+            _mapManager.DeleteMap(mapId);
+        }
+    }
+}