Red-DiscordBot/cogs/alias.py
2018-12-16 13:17:46 +11:00

191 lines
7.1 KiB
Python

from discord.ext import commands
from .utils.chat_formatting import box
from .utils.dataIO import dataIO
from .utils import checks
from copy import copy
import os
import discord
class Alias:
def __init__(self, bot):
self.bot = bot
self.file_path = "data/alias/aliases.json"
self.aliases = dataIO.load_json(self.file_path)
self.remove_old()
@commands.group(pass_context=True, no_pm=True)
async def alias(self, ctx):
"""Manage per-server aliases for commands"""
if ctx.invoked_subcommand is None:
await self.bot.send_cmd_help(ctx)
@alias.command(name="add", pass_context=True, no_pm=True)
@checks.mod_or_permissions(manage_server=True)
async def _add_alias(self, ctx, command, *, to_execute):
"""Add an alias for a command
Example: !alias add test flip @Twentysix"""
server = ctx.message.server
command = command.lower()
if len(command.split(" ")) != 1:
await self.bot.say("I can't safely do multi-word aliases because"
" of the fact that I allow arguments to"
" aliases. It sucks, I know, deal with it.")
return
if self.part_of_existing_command(command, server.id):
await self.bot.say('I can\'t safely add an alias that starts with '
'an existing command or alias. Sry <3')
return
prefix = self.get_prefix(server, to_execute)
if prefix is not None:
to_execute = to_execute[len(prefix):]
if server.id not in self.aliases:
self.aliases[server.id] = {}
if command not in self.bot.commands:
self.aliases[server.id][command] = to_execute
dataIO.save_json(self.file_path, self.aliases)
await self.bot.say("Alias '{}' added.".format(command))
else:
await self.bot.say("Cannot add '{}' because it's a real bot "
"command.".format(command))
@alias.command(name="help", pass_context=True, no_pm=True)
async def _help_alias(self, ctx, command):
"""Tries to execute help for the base command of the alias"""
server = ctx.message.server
if server.id in self.aliases:
server_aliases = self.aliases[server.id]
if command in server_aliases:
help_cmd = server_aliases[command].split(" ")[0]
new_content = self.bot.settings.get_prefixes(server)[0]
new_content += "help "
new_content += help_cmd[len(self.get_prefix(server,
help_cmd)):]
message = ctx.message
message.content = new_content
await self.bot.process_commands(message)
else:
await self.bot.say("That alias doesn't exist.")
@alias.command(name="show", pass_context=True, no_pm=True)
async def _show_alias(self, ctx, command):
"""Shows what command the alias executes."""
server = ctx.message.server
if server.id in self.aliases:
server_aliases = self.aliases[server.id]
if command in server_aliases:
await self.bot.say(box(server_aliases[command]))
else:
await self.bot.say("That alias doesn't exist.")
@alias.command(name="del", pass_context=True, no_pm=True)
@checks.mod_or_permissions(manage_server=True)
async def _del_alias(self, ctx, command):
"""Deletes an alias"""
command = command.lower()
server = ctx.message.server
if server.id in self.aliases:
self.aliases[server.id].pop(command, None)
dataIO.save_json(self.file_path, self.aliases)
await self.bot.say("Alias '{}' deleted.".format(command))
@alias.command(name="list", pass_context=True, no_pm=True)
async def _alias_list(self, ctx):
"""Lists aliases available on this server
Responds in DM"""
server = ctx.message.server
if server.id in self.aliases:
message = "```Alias list:\n"
for alias in sorted(self.aliases[server.id]):
if len(message) + len(alias) + 3 > 2000:
await self.bot.whisper(message)
message = "```\n"
message += "\t{}\n".format(alias)
if message != "```Alias list:\n":
message += "```"
await self.bot.whisper(message)
else:
await self.bot.say("There are no aliases on this server.")
async def on_message(self, message):
if len(message.content) < 2 or message.channel.is_private:
return
msg = message.content
server = message.server
prefix = self.get_prefix(server, msg)
if not prefix:
return
if server.id in self.aliases and self.bot.user_allowed(message):
alias = self.first_word(msg[len(prefix):]).lower()
if alias in self.aliases[server.id]:
new_command = self.aliases[server.id][alias]
args = message.content[len(prefix + alias):]
new_message = copy(message)
new_message.content = prefix + new_command + args
await self.bot.process_commands(new_message)
def part_of_existing_command(self, alias, server):
'''Command or alias'''
for command in self.bot.commands:
if alias.lower() == command.lower():
return True
return False
def remove_old(self):
for sid in self.aliases:
to_delete = []
to_add = []
for aliasname, alias in self.aliases[sid].items():
lower = aliasname.lower()
if aliasname != lower:
to_delete.append(aliasname)
to_add.append((lower, alias))
if aliasname != self.first_word(aliasname):
to_delete.append(aliasname)
continue
server = discord.Object(id=sid)
prefix = self.get_prefix(server, alias)
if prefix is not None:
self.aliases[sid][aliasname] = alias[len(prefix):]
for alias in to_delete: # Fixes caps and bad prefixes
del self.aliases[sid][alias]
for alias, command in to_add: # For fixing caps
self.aliases[sid][alias] = command
dataIO.save_json(self.file_path, self.aliases)
def first_word(self, msg):
return msg.split(" ")[0]
def get_prefix(self, server, msg):
prefixes = self.bot.settings.get_prefixes(server)
for p in prefixes:
if msg.startswith(p):
return p
return None
def check_folder():
if not os.path.exists("data/alias"):
print("Creating data/alias folder...")
os.makedirs("data/alias")
def check_file():
aliases = {}
f = "data/alias/aliases.json"
if not dataIO.is_valid_json(f):
print("Creating default alias's aliases.json...")
dataIO.save_json(f, aliases)
def setup(bot):
check_folder()
check_file()
bot.add_cog(Alias(bot))