[SlashSync] Cog model restructure

- Restructure `SlashSync` according to SFUAnime/Ren#608. No functional
  changes.
- Remove module docstring for `slashsync.py` as it is already included
  in `__init__.py`.

slashsync/commandHandlers.py

@@ -0,0 +1,11 @@
+from redbot.core import checks, commands
+from redbot.core.commands import Context
+
+from .commandsCore import SlashSyncCommandsCore
+
+
+class SlashSyncCommandHandlers(SlashSyncCommandsCore):
+    @commands.command(name="sync")
+    @checks.is_owner()
+    async def _cmdSync(self, ctx: Context):
+        await self.cmdSync(ctx)

slashsync/commandsCore.py

@@ -0,0 +1,11 @@
+from redbot.core.commands.context import Context
+from redbot.core.utils.chat_formatting import info, success
+
+from .core import SlashSyncCore
+
+
+class SlashSyncCommandsCore(SlashSyncCore):
+    async def cmdSync(self, ctx: Context):
+        msg = await ctx.send(info("Syncing slash commands to Discord, please wait..."))
+        await self.bot.tree.sync()
+        await msg.edit(content=success("Synchronized slash commands to Discord."))

slashsync/core.py

@@ -0,0 +1,21 @@
+import logging
+
+from redbot.core.bot import Red
+
+
+class SlashSyncCore:
+    def __init__(self, bot: Red):
+        self.bot = bot
+        self.logger = logging.getLogger("red.luicogs.SlashSync")
+        self.bgTask = self.bot.loop.create_task(self.waitUntilBotReady())
+
+    async def waitUntilBotReady(self):
+        self.logger.debug("Waiting for bot to be ready")
+        await self.bot.wait_until_red_ready()
+        self.logger.debug("Bot is ready, synchronizing command tree")
+        await self.bot.tree.sync()
+        self.logger.debug("Command tree synchronized")
+
+    def cog_unload(self):
+        self.logger.debug("Clean up background task")
+        self.bgTask.cancel()

slashsync/slashsync.py

@@ -1,38 +1,7 @@
-"""SlashSync
+from redbot.core import commands
 
-Sync slash commands from the bot to the server.
-"""
-import logging
+from .commandHandlers import SlashSyncCommandHandlers
 
-from redbot.core import checks, commands
-from redbot.core.bot import Red
-from redbot.core.commands.context import Context
-from redbot.core.utils.chat_formatting import info, success
 
-
-class SlashSync(commands.Cog):
+class SlashSync(commands.Cog, SlashSyncCommandHandlers):
     """Synchronize slash commands on the bot to Discord"""
-
-    def __init__(self, bot: Red):
-        self.bot = bot
-        self.logger = logging.getLogger("red.luicogs.SlashSync")
-        self.bgTask = self.bot.loop.create_task(self.waitUntilBotReady())
-
-    async def waitUntilBotReady(self):
-        self.logger.debug("Waiting for bot to be ready")
-        await self.bot.wait_until_red_ready()
-        self.logger.debug("Bot is ready, synchronizing command tree")
-        await self.bot.tree.sync()
-        self.logger.debug("Command tree synchronized")
-
-    def cog_unload(self):
-        self.logger.debug("Clean up background task")
-        self.bgTask.cancel()
-
-    @commands.command(name="sync")
-    @checks.is_owner()
-    async def sync(self, ctx: Context):
-        """Synchronize slash commands to Discord"""
-        msg = await ctx.send(info("Syncing slash commands to Discord, please wait..."))
-        await self.bot.tree.sync()
-        await msg.edit(content=success("Synchronized slash commands to Discord."))