Update guild listener to use new database. Add default config function to utils.

cogs/guild_listener/__init__.py

@@ -2,10 +2,12 @@
 Defines cog for guild listeners. Contains functions for various guild events.
 """
 
-from nextcord.ext import commands
 import nextcord
+from nextcord.ext import commands
 
-from highscores import highscores_data  # pylint: disable=import-error
+# pylint: disable=import-error
+from highscores import Guild, session
+from utilities.utils import add_preset_configuration
 
 
 class GuildListener(commands.Cog, name="Guild Listener"):
@@ -17,10 +19,11 @@ class GuildListener(commands.Cog, name="Guild Listener"):
     @commands.Cog.listener()
     async def on_guild_join(self, guild: nextcord.Guild):
         """Listener for Guild Join. Creates skeleton for new guild joined and saves it."""
-        highscores_data.add_guild(guild.id)
+        new_guild = Guild(GuildId=guild.id)
+        session.add(new_guild)
+        session.commit()
         # This add config will be removed eventually. Config adding will have to be controlled by commands.
-        highscores_data.add_configuration(guild.id, "runescape")
-        highscores_data.save_guild_data(highscores_data.get_guild(guild.id))
+        add_preset_configuration(guild.id, "runescape")
 
         welcome_message: str = "Hello, I keep track of Highscores for you!"
         welcome_message += " Currently only supporting RuneScape boss highscores,"
@@ -29,12 +32,6 @@ class GuildListener(commands.Cog, name="Guild Listener"):
 
         await guild.system_channel.send(content=welcome_message)
 
-    @commands.Cog.listener()
-    async def on_guild_remove(self, guild: nextcord.Guild):
-        """Listener for Guild Remove. Removes data from highscores_data."""
-        print(f"Removing data for guild {guild.name} (id {guild.id}).")
-        highscores_data.remove_guild(guild.id)
-
 
 # This function will be called when this extension is loaded.
 # It is necessary to add these functions to the bot.