1 files changed, 51 insertions, 0 deletions
diff --git a/bot/cogs/error_handler.py b/bot/cogs/error_handler.py
new file mode 100644
index 00000000..3f228b14
--- /dev/null
+++ b/bot/cogs/error_handler.py
@@ -0,0 +1,51 @@
+import discord
+from discord.ext import commands
+import asyncio
+
+import sys
+import traceback
+import math
+
+class CommandErrorHandler:
+    def __init__(self, bot):
+        self.bot = bot
+
+    async def on_command_error(self, ctx, error):
+        if hasattr(ctx.command, 'on_error'):
+            return
+        error = getattr(error, 'original', error)
+
+        if isinstance(error, commands.CommandNotFound):
+            return
+
+        if isinstance(error, commands.UserInputError):
+            return await ctx.send(':no_entry: The command you specified failed to run because the arguments you provided were invalid.')
+
+        if isinstance(error, commands.CommandOnCooldown):
+            return await ctx.send("This command is on cooldown, please retry in {}s.".format(math.ceil(error.retry_after)))
+
+        if isinstance(error, commands.DisabledCommand):
+            return await ctx.send(':no_entry: This command has been disabled.')
+
+        if isinstance(error, commands.NoPrivateMessage):
+            try:
+                return await ctx.author.send(':no_entry: This command can only be used inside a server.')
+            except:
+                pass
+
+        if isinstance(error, commands.BadArgument):
+            if ctx.command.qualified_name == 'tag list':
+                return await ctx.send('I could not find that member. Please try again.')
+            else:
+                return await ctx.send("The argument you provided was invalid.")
+
+        if isinstance(error, commands.CheckFailure):
+            await ctx.send(":no_entry: You do not have permission to use this command.")
+            return
+
+        print('Ignoring exception in command {}:'.format(ctx.command), file=sys.stderr)
+        traceback.print_exception(type(error), error, error.__traceback__, file=sys.stderr)
+
+
+def setup(bot):
+    bot.add_cog(CommandErrorHandler(bot))