Feat: Add emoji confirming/error reactions

If the commands throws an error then the bot marks the command message with a cross emoji reaction otherwise it adds a check mark.
(Also resolved some overshadowing warning of extension)

src/bot.py

@@ -10,6 +10,8 @@ __author__ = 'Bibin Muttappillil'
 # standard library imports
 import os
 from dotenv import load_dotenv
+import sys
+import traceback
 
 # discord imports
 from discord.ext import commands
@@ -24,27 +26,41 @@ if TOKEN is None:
 
 bot = commands.Bot(command_prefix=commands.when_mentioned_or('$b '))
 
-default_extensions = ['developer']
 
-for extension in default_extensions:
+@bot.event
+async def on_command_error(ctx, error):
+	print('Ignoring exception in command {}:'.format(ctx.command), file=sys.stderr)
+	traceback.print_exception(type(error), error, error.__traceback__, file=sys.stderr)
+	await ctx.message.add_reaction('❌')
+
+
+@bot.event
+async def on_command_completion(ctx):
+	await ctx.message.add_reaction('✅')
+
+
+@bot.command(hidden=True)
+@commands.is_owner()
+async def load(ctx, ext):
+	bot.load_extension(f'cogs.{ext}')
+	print(f'cogs.{ext} loaded')
+
+
+@bot.command(hidden=True)
+@commands.is_owner()
+async def unload(ctx, ext):
+	bot.unload_extension(f'cogs.{ext}')
+	print(f'cogs.{ext} unloaded')
+
+
+@bot.command(hidden=True)
+@commands.is_owner()
+async def reload(ctx, ext):
+	bot.reload_extension(f'cogs.{ext}')
+	print(f'cogs.{ext} reloaded')
+
+
+for extension in ['developer']:
 	bot.load_extension(f'cogs.{extension}')
 
-@bot.command()
-@commands.is_owner()
-async def load(ctx, extension):
-	bot.load_extension(f'cogs.{extension}')
-	print(f'cogs.{extension} loaded')
-
-@bot.command()
-@commands.is_owner()
-async def unload(ctx, extension):
-	bot.unload_extension(f'cogs.{extension}')
-	print(f'cogs.{extension} unloaded')
-
-@bot.command()
-@commands.is_owner()
-async def reload(ctx, extension):
-	bot.reload_extension(f'cogs.{extension}')
-	print(f'cogs.{extension} reloaded')
-
 bot.run(TOKEN)

src/cogs/basic_game.py

@@ -0,0 +1,50 @@
+"""A base module for integrating text games into a discord cog"""
+
+# import discord
+from discord.ext import commands
+
+
+# checks
+
+
+def is_not(check):
+	return lambda ctx: not check(ctx)
+
+
+def is_setup(ctx):
+	return ctx.channel in ctx.cog.sessions
+
+
+class Cog(commands.Cog):
+	"""A base game cog that has a collection of basic game commands and checkers"""
+
+	def __init__(self, bot, session_cls=None):
+		self.bot = bot
+		self.sessions = {}
+		self.session_cls = Session if session_cls is None else session_cls
+		self.group = next(c for c in self.get_commands() if c.name == 'group')
+		self.group.name = self.qualified_name.lower()
+
+	@commands.group(invoke_without_command=True)
+	async def group(self, ctx):
+		await ctx.send("try info")
+
+	@group.command()
+	@commands.check(is_not(is_setup))
+	async def setup(self, ctx):
+		"""Creates a game instance for this channel"""
+		self.sessions[ctx.channel] = self.session_cls()
+
+	@setup.error
+	async def setup_handler(self, ctx, error):
+		await ctx.send(f"A game of is already setup in this channel")
+
+
+class Session:
+	"""A base class for holding channel specific information and setting up a game"""
+	pass
+
+
+class Display:
+	"""A base class for displaying game in discord"""
+	pass