Improve embeds

- Use url attribute to add link to title
- Add video thumbnail as embed image

src/bot.py

@@ -2,8 +2,9 @@ import asyncio
 import logging
 import os
 import sys
-from dataclasses import dataclass
+from dataclasses import dataclass, field
 from distutils.util import strtobool
+import re
 
 import discord
 import youtube_dl
@@ -25,6 +26,14 @@ class Song:
   title: str
   webpage_url: str
   audio_url: str
+  video_id: str = field(init=False)
+  image_url: str = field(init=False)
+
+  def __post_init__(self):
+    video_url = self.webpage_url
+    if match := re.search(r'youtube\.com\/watch\?v=(?P<video_id>[a-zA-Z0-9]+)', video_url):
+      self.video_id = match.group('video_id')
+      self.image_url = f'https://img.youtube.com/vi/{self.video_id}/hqdefault.jpg'
 
 
 class Music(commands.Cog):
@@ -100,7 +109,7 @@ class Music(commands.Cog):
           self._next()
         self.logger.info('Now playing: %s (%s)', song.title, song.webpage_url)
         ctx.voice_client.play(audio, after=after)
-        embed = NowPlayingMessage(title=song.title, url=song.webpage_url)
+        embed = NowPlayingMessage(title=song.title, url=song.webpage_url, image_url=song.image_url)
         msg = await ctx.send(embed=embed)
         await self._add_skip_button(msg)
       # pylint: disable=broad-except
@@ -142,7 +151,7 @@ class Music(commands.Cog):
         self.logger.info('Qeueing song: %s (%s)', song.title, song.webpage_url)
         await self._queue.put((ctx, song))
         if ctx.voice_client.is_playing():
-          embed = QueuedMessage(title=song.title, url=song.webpage_url)
+          embed = QueuedMessage(title=song.title, url=song.webpage_url, image_url=song.image_url)
           await ctx.send(embed=embed)
 
   def _skip(self, voice_client):

src/message.py

@@ -13,6 +13,9 @@ class BotMessage(discord.Embed):
         **kwargs,
         title=title
     )
+    image_url = kwargs.pop('image_url', None)
+    if image_url:
+      super().set_image(url=image_url)
 
 
 class ErrorMessage(BotMessage):
@@ -31,18 +34,20 @@ class ErrorMessage(BotMessage):
 
 
 class NowPlayingMessage(BotMessage):
-  def __init__(self, title, url):
+  def __init__(self, title, url, image_url):
     super().__init__(
         title=f'Now playing: {title}',
-        description=url,
+        url=url,
+        image_url=image_url,
         color=discord.Color.green()
     )
 
 
 class QueuedMessage(BotMessage):
-  def __init__(self, title, url):
+  def __init__(self, title, url, image_url):
     super().__init__(
         title=f'Queued: {title}',
-        description=url,
+        url=url,
+        image_url=image_url,
         color=discord.Color.blue()
     )

test/test_bot.py

@@ -21,8 +21,8 @@ async def test_bot_ensure_voice(mbot, ctx):
     await mbot.ensure_voice(ctx)
 
 
-def mock_ytdl_extract_info(ytdl, url, title):
-  ytdl.extract_info.return_value = {'entries': [{'url': url, 'title': title}]}
+def mock_ytdl_extract_info(ytdl, *, title, webpage_url, audio_url):
+  ytdl.extract_info.return_value = {'entries': [{'title': title, 'webpage_url': webpage_url, 'url': audio_url}]}
 
 
 def mock_ffmpeg_pcm_audio(ffmpeg_pcm_audio):
@@ -40,7 +40,7 @@ async def test_bot_playback(mbot, ctx):
       ctx.voice_client.is_playing.return_value = False
       url = 'https://www.youtube.com/watch?v=Wr9LZ1hAFpQ'
       title = 'In Flames - Deliver Us (Official Video)'
-      mock_ytdl_extract_info(ytdl, url, title)
+      mock_ytdl_extract_info(ytdl, title=title, webpage_url=url, audio_url=url)
       deliver_us_audio = mock_ffmpeg_pcm_audio(ffmpeg_pcm_audio)
       query = 'in flames deliver us'
       # pylint: disable=too-many-function-args
@@ -71,7 +71,7 @@ async def test_bot_playback(mbot, ctx):
       ctx.voice_client.is_playing.return_value = True
       url = 'https://www.youtube.com/watch?v=pMDcYX2wRSg'
       title = 'Three Days Grace - Time of Dying (lyrics)'
-      mock_ytdl_extract_info(ytdl, url, title)
+      mock_ytdl_extract_info(ytdl, title=title, webpage_url=url, audio_url=url)
       time_of_dying_audio = mock_ffmpeg_pcm_audio(ffmpeg_pcm_audio)
       # pylint: disable=too-many-function-args
       query = 'three days grace time of dying'
@@ -111,7 +111,7 @@ async def test_bot_skip(mbot, ctx):
       ctx.voice_client.is_playing.return_value = False
       url = 'https://www.youtube.com/watch?v=Wr9LZ1hAFpQ'
       title = 'In Flames - Deliver Us (Official Video)'
-      mock_ytdl_extract_info(ytdl, url, title)
+      mock_ytdl_extract_info(ytdl, title=title, webpage_url=url, audio_url=url)
       deliver_us_audio = mock_ffmpeg_pcm_audio(ffmpeg_pcm_audio)
       query = 'in flames deliver us'
       # pylint: disable=too-many-function-args
@@ -125,7 +125,7 @@ async def test_bot_skip(mbot, ctx):
       ctx.voice_client.is_playing.return_value = True
       url = 'https://www.youtube.com/watch?v=pMDcYX2wRSg'
       title = 'Three Days Grace - Time of Dying (lyrics)'
-      mock_ytdl_extract_info(ytdl, url, title)
+      mock_ytdl_extract_info(ytdl, title=title, webpage_url=url, audio_url=url)
       time_of_dying_audio = mock_ffmpeg_pcm_audio(ffmpeg_pcm_audio)
       # pylint: disable=too-many-function-args
       query = 'three days grace time of dying'