Better user error messages for errors by youtubedl

src/message.py

@@ -1,3 +1,5 @@
+import re
+
 import discord
 
 
@@ -14,9 +16,16 @@ class BotMessage(discord.Embed):
 
 
 class ErrorMessage(BotMessage):
-  def __init__(self, message):
+  def __init__(self, message, *, command_name: str = None):
+    title = message
+    if command_name:
+      title = f'Error during command "{command_name}"'
+    description = None
+    if match := re.search(r"(?P<error>\w+Error): ?(ERROR: ?)?(?P<message>.*): ?Traceback", message):
+      description = f"{match.group('error')}: {match.group('message')}"
     super().__init__(
-        title=f"Error: {message}",
+        title=title,
+        description=description,
         color=discord.Color.red()
     )