feat: Refactored all cogs implementation

cogs/intern.py

@@ -0,0 +1,55 @@
+import random
+from discord.ext import commands
+
+
+class InternCog(commands.Cog):
+    def __init__(self, bot=None):
+        self.bot = bot
+        # `data` expected to be a list of dicts with 'guild_id' and 'mentor_id'
+        self.data = []
+        self.connected_guild_ids = set()
+        self.in_voice_channel = False
+
+    async def on_voice_state_update(self, member, before, after):
+        # determine guild context
+        guild = None
+        if after and getattr(after, 'channel', None):
+            guild = after.channel.guild
+        elif before and getattr(before, 'channel', None):
+            guild = before.channel.guild
+        if not guild:
+            return
+
+        # find matching mentor entry for this guild
+        entry = None
+        for e in getattr(self, 'data', []):
+            if e.get('guild_id') == getattr(guild, 'id', None) and e.get('mentor_id') == getattr(member, 'id', None):
+                entry = e
+                break
+        if not entry:
+            return
+
+        # find existing voice client for this guild (if any)
+        voice_client = None
+        for vc in getattr(self.bot, 'voice_clients', []):
+            if getattr(vc, 'guild', None) and getattr(vc.guild, 'id', None) == getattr(guild, 'id', None):
+                voice_client = vc
+                break
+
+        # mentor joined a channel (initial join)
+        if (not before or not getattr(before, 'channel', None)) and after and getattr(after, 'channel', None):
+            # if bot is not connected, connect with 25% chance
+            if not voice_client:
+                if random.random() < 0.25:
+                    await after.channel.connect()
+                    return
+
+        # mentor moved channels while bot is connected -> move bot
+        if voice_client and after and getattr(after, 'channel', None):
+            await voice_client.move_to(after.channel)
+            return
+
+        # mentor left channel -> disconnect bot if connected
+        if voice_client and (not after or not getattr(after, 'channel', None)):
+            await voice_client.disconnect(force=True)
+            return