Refactor message dispatch and playlist view error handling

Updated dispatch_message to use discord.utils.MISSING and improved content formatting. Added error handling in PlaylistView for VoicelinkException and refactored on_timeout logic in PlaylistViewManager to avoid duplication. Minor improvements to playlist track rendering.

voicelink/utils.py

@@ -30,7 +30,6 @@ from itertools import zip_longest
 from typing import Dict, Optional, Union
 from timeit import default_timer as timer
 from discord.ext import commands
-from discord.utils import MISSING
 
 from .mongodb import MongoDBHandler
 from .language import LangHandler
@@ -303,7 +302,7 @@ async def dispatch_message(
     *params,
     view: Optional[discord.ui.View] = None,
     file: Optional[discord.File] = None,
-    delete_after: Optional[float] = MISSING,
+    delete_after: Optional[float] = discord.utils.MISSING,
     ephemeral: bool = False,
     requires_fetch: bool = False
 ) -> Optional[discord.Message]:
@@ -323,12 +322,12 @@ async def dispatch_message(
     Returns:
         The sent message object, or None.
     """
-    if content is None:
+    if not content:
         content = "No content provided."
 
     # Determine the text to send
     embed = content if isinstance(content, discord.Embed) else None
-    text = None if embed else content.format(*params)
+    text = None if embed else str(content).format(*params) if params else str(content)
         
     # Determine the sending function
     send_func = (
@@ -354,9 +353,9 @@ async def dispatch_message(
         send_kwargs["view"] = view
         
     if "delete_after" in send_func.__code__.co_varnames:
-        if delete_after is MISSING and settings and ctx.channel.id == settings.get("music_request_channel", {}).get("text_channel_id"):
+        if delete_after is discord.utils.MISSING and settings and ctx.channel.id == settings.get("music_request_channel", {}).get("text_channel_id"):
             delete_after = 10
-        send_kwargs["delete_after"] = delete_after if delete_after != MISSING else None
+        send_kwargs["delete_after"] = delete_after if delete_after is not discord.utils.MISSING else None
     
     if "ephemeral" in send_func.__code__.co_varnames:
         send_kwargs["ephemeral"] = ephemeral

voicelink/views/playlist.py

@@ -31,9 +31,10 @@ from typing import Any
 from .utils import DynamicViewManager, Pagination
 from .pagination import PaginationView
 from ..config import Config
-from ..utils import format_ms, truncate_string
+from ..utils import format_ms, truncate_string, dispatch_message
 from ..mongodb import MongoDBHandler
 from ..language import LangHandler
+from ..exceptions import VoicelinkException
 
 class PlaylistDropdown(discord.ui.Select):
     def __init__(self, results: list[dict[str, Any]], lang: str) -> None:
@@ -108,7 +109,7 @@ class PlaylistView(PaginationView):
         embed.description += f"\n\n**{texts[5]}:**\n"
         if tracks:
             for index, track in enumerate(tracks, start=self.pagination.start_index + 1):
-                if self.type == "playlist":
+                if isinstance(track, dict):
                     source_emoji = Config().get_source_config(track['sourceName'], 'emoji')
                     track_info = f"{source_emoji} `{index:>2}.` `[{format_ms(track['length'])}]` [{truncate_string(track['title'])}]({track['uri']})"
                 else:
@@ -140,6 +141,10 @@ class PlaylistView(PaginationView):
         }
         return super().update_view(extra_states)
     
+    async def on_error(self, interaction: discord.Interaction, error: Exception, item: discord.ui.Item) -> None:
+        if isinstance(error, VoicelinkException):
+            return await dispatch_message(interaction, content=getattr(error, 'original', error), ephemeral=True)
+    
     async def update_message(self, interaction: discord.Interaction) -> None:
         """Update the view and edit the message with the new embed."""
         self.update_view()
@@ -199,6 +204,18 @@ class PlaylistViewManager(DynamicViewManager):
         self.response: discord.Message = None
         self.add_item(PlaylistDropdown(results, self.lang))
 
+    async def on_timeout(self) -> None:
+        for view in self._views.values():
+            view.stop()
+
+        for child in self.current_view.children:
+            child.disabled = True
+
+        try:
+            await self.response.edit(view=self)
+        except:
+            pass
+
     def get_width(self, s):
         width = 0
         for char in str(s):
@@ -214,18 +231,6 @@ class PlaylistViewManager(DynamicViewManager):
         padding = width - current_width
         return s + " " * padding
     
-    async def on_timeout(self) -> None:
-        for view in self._views.values():
-            view.stop()
-
-        for child in self.current_view.children:
-            child.disabled = True
-
-        try:
-            await self.response.edit(view=self)
-        except:
-            pass
-        
     def build_embed(self) -> discord.Embed:
         """
         Build the embed for the playlist overview.