import os
import re
from os.path import abspath, dirname, expanduser, join

import reaktor  # to get the path to the reaktor basedir

env = os.environ

# TODO: put this somewhere else


def str2bool(v):
    return v.lower() in ("yes", "true", "t", "1")


# ENVIRON CONFIG
# this provides a simple means of reconfiguring this config without the need to
# copy-paste the whole thing
debug = str2bool(env.get('REAKTOR_DEBUG', "False"))
# IRC_NICKNAME is set if the nick changes and the config is getting reloaded
name = env.get('REAKTOR_NICKNAME', 'crabmanner')
irc_server = env.get('REAKTOR_HOST', 'irc.freenode.org')
irc_port = int(env.get('REAKTOR_PORT', 6667))
# TODO: do not implement functionality in the config :\
workdir = env.get('REAKTOR_STATEDIR', expanduser('~') + '/state')
irc_channels = env.get('REAKTOR_CHANNELS', '#krebs').split(',')
try:
    nickserv_password = open(
        env.get('REAKTOR_NICKSERV_PASSWORD')
    ).read().strip()
except:  # noqa: E722
    nickserv_password = None

# static config
# if you want to change this part you have to copy the config
irc_alarm_timeout = 300
irc_hammer_interval = 10
irc_kill_timeout = 360
irc_nickname = name
irc_restart_timeout = 5

# IMPLEMENTATION
# this config contains the implementation of how commands should match

# TODO: YAY more functionality in config.py ..
# create the workdir somewhere # else in the code ...
# if this fails the bot will fail (which is ok)
if not os.path.isdir(workdir):
    os.makedirs(workdir)


admin_file = workdir+'/admin.lst'
auth_file = workdir+'/auth.lst'

config_filename = abspath(__file__)
mod_dir = dirname(abspath(reaktor.__file__))
# the commands dirname (
dist_dir = abspath(join(mod_dir))

# me is used, so name cannot kill our patterns below

# TODO: name may change after reconnect, then this pattern fails to match
# this may need a complete refactor of how to create patterns and matches

# IMPLEMENTATION
me = '\\b' + re.escape(name) + '\\b'
me_or_us = '(?:' + me + '|\\*)'
indirect_pattern = '^'+me_or_us+':\\s*{}\\s*(?:\\s+(?P<args>.*))?$'


def distc(cmd):
    """
    builds a path to a cmd in the command folder of the Reaktor distribution
    """
    return join(dist_dir, "commands", cmd)


def default_command(cap, cmd=None, env=None):
    """ (botname|*): cmd args

    query the bot in the channel, e.g.:
      crabmanner: hello
      *: hello
    """
    if not env:
        env = {}
    if cmd is None:
        cmd = cap
    return {
        'capname': cap,
        'pattern': indirect_pattern.format(cap),
        'argv': [distc(cmd)],
        'env': env
    }


direct_pattern = '^{}\\s*(?:\\s+(?P<args>.*))?$'


def simple_command(cap, cmd=None, env=None):
    """ cmd args

    query the bot directly, e.g.: /msg crabmanner identity dick butt
    """
    if not env:
        env = {}
    if cmd is None:
        cmd = cap
    return {
        'capname': cap,
        'pattern': direct_pattern.format(cap),
        'argv': [distc(cmd)],
        'env': env
    }


# unauthenticated commands
public_commands = [
    default_command('caps', env={
        'config_filename': config_filename
    }),
    default_command('hello'),
    default_command('badcommand'),
    # default_command('rev'), # TODO: when uploaded to pypi the rev gets lost
    default_command('version'),
    default_command('uptime'),
    default_command('nocommand'),
    default_command('tell', cmd='tell-on_privmsg', env={
        'state_file': workdir + '/tell.txt'
    }),
    simple_command('identify', env={
        'config_filename': config_filename
    }),
    # command not found
    # { 'pattern': '^' + me_or_us + ':.*',
    #  'argv': [ distc('respond'),'You are made of stupid!'] },
    # "highlight"
    {'pattern': '.*' + me + '.*',
        'argv': [distc('say'), 'I\'m famous']},
    # identify via direct connect
]

# authenticated commands
commands = [
    default_command('reload'),
]

on_join = [
    {
        'capname': 'tell',
        'argv': [distc('tell-on_join')],
        'env': {'state_file': workdir + '/tell.txt'}
    }
]

# Timer
on_ping = []

# END IMPLEMENTATION