import re

from util import hook


@hook.command(autohelp=False)
def help(inp, bot=None, pm=None):
    ".help [command] -- gives a list of commands/help for a command"

    funcs = {}
    disabled = bot.config.get('disabled_plugins', [])
    disabled_comm = bot.config.get('disabled_commands', [])
    for command, (func, args) in bot.commands.iteritems():
        fn = re.match(r'^plugins.(.+).py$', func._filename)
        if fn.group(1).lower() not in disabled:
            if command not in disabled_comm:
                if func.__doc__ is not None:
                    if func in funcs:
                        if len(funcs[func]) < len(command):
                            funcs[func] = command
                    else:
                        funcs[func] = command

    commands = dict((value, key) for key, value in funcs.iteritems())

    if not inp:
        pm('available commands: ' + ' '.join(sorted(commands)))
    else:
        if inp in commands:
            pm(commands[inp].__doc__)