Add autofill to get all users in guild.

utilities/utils.py

@@ -137,6 +137,32 @@ def autofill_users_in_group_category(
     return users
 
 
+def autofill_users_in_guild(guild_id: int, user_begin: str) -> "list[str]":
+    """
+    Obtains and returns a list of all the users who have submitted to the guild's highscores.
+
+    Args:
+        guild_id (int): Id of the guild.
+        user_begin (str): Beginning of user name to search with. Can be empty.
+
+    Returns:
+        list[str]: All users with submissions in the guild.
+    """
+    group_ids = select(CategoryGroup.GroupId).where(CategoryGroup.GuildId == guild_id).subquery()
+    category_ids = select(Category.CategoryId).where(Category.GroupId.in_(group_ids)).subquery()
+    stmt = select(distinct(Score.UserName)).where(Score.CategoryId.in_(category_ids))
+    users_list: "list[str]" = list(session.scalars(stmt))
+
+    # if string empty, return all users
+    if not user_begin:
+        return users_list
+
+    # else find all users that start with user_begin
+    users = [user for user in users_list if user_begin.lower() in user.lower()]
+
+    return users
+
+
 def format_highscore_message(group: CategoryGroup) -> str:
     """
     Creates a formatted string for a boss's highscore discord message.