Added guests.

Backend/Groups.py

@@ -10,6 +10,8 @@ from Settings import GetDataDirectory
 
 
 AdminGroupName = "Admin"
+GuestGroupName = "Guest"
+BuiltinGroupNames = (AdminGroupName, GuestGroupName)
 
 
 def GetGroupsPath():
@@ -25,7 +27,7 @@ def LoadGroups() -> dict[str, list[str]]:
         SeededAdmins = [
             Username for Username, Data in LoadUsers().items() if Data.get("IsAdmin", False)
         ]
-        Groups = {AdminGroupName: SeededAdmins}
+        Groups = {AdminGroupName: SeededAdmins, GuestGroupName: []}
         SaveGroups(Groups)
         return Groups
 
@@ -33,9 +35,14 @@ def LoadGroups() -> dict[str, list[str]]:
         Loaded = tomllib.load(GroupsFile)
 
     Groups = Loaded.get("Groups", {})
+    Changed = False
 
-    if AdminGroupName not in Groups:
-        Groups[AdminGroupName] = []
+    for BuiltinName in BuiltinGroupNames:
+        if BuiltinName not in Groups:
+            Groups[BuiltinName] = []
+            Changed = True
+
+    if Changed:
         SaveGroups(Groups)
 
     return Groups
@@ -69,8 +76,8 @@ def CreateGroup(Name: str) -> None:
 
 
 def DeleteGroup(Name: str) -> None:
-    if Name == AdminGroupName:
-        raise ValueError("The Admin group can't be deleted.")
+    if Name in BuiltinGroupNames:
+        raise ValueError(f"The {Name} group can't be deleted.")
 
     Groups = LoadGroups()