Add anonymous functionality

Author: kyb3r

core/thread.py

@@ -184,7 +184,7 @@ async def note(self, message):
         )
 
 
-    async def reply(self, message):
+    async def reply(self, message, anonymous=False):
         if not message.content and not message.attachments:
             raise commands.UserInputError
         if all(not g.get_member(self.id) for g in self.bot.guilds):
@@ -196,13 +196,14 @@ async def reply(self, message):
 
         tasks = [
             # in thread channel
-            self.send(message, self.channel, from_mod=True),
+            self.send(message, destination=self.channel, from_mod=True, anonymous=True),
             # to user
-            self.send(message, self.recipient, from_mod=True)
+            self.send(message, destination=self.recipient, from_mod=True, anonymous=True)
             ]
 
+
         self.bot.loop.create_task(
-            self.bot.modmail_api.append_log(message, self.channel.id)
+            self.bot.modmail_api.append_log(message, self.channel.id, type='anonymous' if anonymous else 'thread_message')
             )
 
         if self.close_task is not None:
@@ -215,7 +216,7 @@ async def reply(self, message):
 
         await asyncio.gather(*tasks)
 
-    async def send(self, message, destination=None, from_mod=False, note=False):
+    async def send(self, message, destination=None, from_mod=False, note=False, anonymous=False):
         if self.close_task is not None:
             # cancel closing if a thread message is sent.
             await self.cancel_closure()
@@ -244,10 +245,21 @@ async def send(self, message, destination=None, from_mod=False, note=False):
 
         # store message id in hidden url
         if not note:
-            em.set_author(name=author,
-                      icon_url=author.avatar_url,
+
+            if anonymous and from_mod and not isinstance(destination, discord.TextChannel):
+                # Anonymously sending to the user.
+                name = self.bot.config.get('anon_username', self.bot.config.get('mod_tag', 'Moderator'))
+                avatar_url = self.bot.config.get('anon_avatar_url', self.bot.guild.icon_url)
+            else:
+                # Normal message
+                name = str(author)
+                avatar_url = author.avatar_url
+
+            em.set_author(name=name,
+                      icon_url=avatar_url,
                       url=message.jump_url)
         else:
+            # Special note messages
             em.set_author(
                 name=f'Note ({author.name})',
                 icon_url=system_avatar_url,
@@ -301,7 +313,13 @@ def is_image_url(u, _):
 
         if from_mod:
             em.color = self.bot.mod_color
-            em.set_footer(text=self.bot.config.get('mod_tag', 'Moderator'))
+            if anonymous and isinstance(destination, discord.TextChannel): # Anonymous reply sent in thread channel
+                em.set_footer(text='Anonymous Reply')
+            elif not anonymous:
+                em.set_footer(text=self.bot.config.get('mod_tag', 'Moderator')) # Normal messages
+            else:
+                em.set_footer(text='\u200b') # Anonymous reply sent to user
+                
         elif note:
             em.color = discord.Color.blurple()
         else: