Add msglink command to get DM message URLs.

Author: scragly

cogs/modmail.py

@@ -601,6 +601,18 @@ async def sfw(self, ctx):
         sent_emoji, _ = await self.bot.retrieve_emoji()
         await self.bot.add_reaction(ctx.message, sent_emoji)
 
+    @commands.command()
+    @checks.has_permissions(PermissionLevel.SUPPORTER)
+    @checks.thread_only()
+    async def loglink(self, ctx, message_id: int):
+        """Retrieves the link to a message in the current thread."""
+        message = await ctx.thread.recipient.fetch_message(message_id)
+        if not message:
+            embed = discord.Embed(color=self.bot.main_color, description="Message no longer exists.")
+        else:
+            embed = discord.Embed(color=self.bot.main_color, description=message.jump_url)
+        await ctx.send(embed=embed)
+
     @commands.command()
     @checks.has_permissions(PermissionLevel.SUPPORTER)
     @checks.thread_only()