# Copyright (c) 2008 Duncan Fordyce
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# The above copyright notice and this permission notice shall be included in
#  all copies or substantial portions of the Software.
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.

""" contains helper functions for common irc commands """

import logging
import random

PchumLog = logging.getLogger("pchumLogger")


def msg(cli, user, msg):
    for line in msg.split("\n"):
        cli.send("PRIVMSG", user, ":%s" % line)


def names(cli, *channels):
    tmp = __builtins__["list"](channels)
    msglist = []
    while len(tmp) > 0:
        msglist.append(tmp.pop())
        if len(",".join(msglist)) > 490:
            tmp.append(msglist.pop())
            cli.send("NAMES %s" % (",".join(msglist)))
            msglist = []
    if len(msglist) > 0:
        cli.send("NAMES %s" % (",".join(msglist)))


def channel_list(cli):
    cli.send("LIST")

def ping(cli, token):
    """Why is this called ping when it pongs.."""
    cli.send("PONG", token)

def kick(cli, handle, channel, reason=""):
    cli.send("KICK {} {} {}".format(channel, handle, reason))


def mode(cli, channel, mode, options=None):
    PchumLog.debug("mode = " + str(mode))
    PchumLog.debug("options = " + str(options))
    cmd = "MODE {} {}".format(channel, mode)
    if options:
        cmd += " %s" % (options)
    cli.send(cmd)


def ctcp(cli, handle, cmd, msg=""):
    # Space breaks protocol if msg is absent
    if msg == "":
        cli.send("PRIVMSG", handle, "\x01%s\x01" % (cmd))
    else:
        cli.send("PRIVMSG", handle, "\x01{} {}\x01".format(cmd, msg))


def ctcp_reply(cli, handle, cmd, msg=""):
    notice(cli, str(handle), "\x01{} {}\x01".format(cmd.upper(), msg))


def metadata(cli, target, subcommand, *params):
    # IRC metadata draft specification
    # https://gist.github.com/k4bek4be/92c2937cefd49990fbebd001faf2b237
    cli.send("METADATA", target, subcommand, *params)


def cap(cli, subcommand, *params):
    # Capability Negotiation
    # https://ircv3.net/specs/extensions/capability-negotiation.html
    cli.send("CAP", subcommand, *params)


def msgrandom(cli, choices, dest, user=None):
    o = "%s: " % user if user else ""
    o += random.choice(choices)
    msg(cli, dest, o)


def _makeMsgRandomFunc(choices):
    def func(cli, dest, user=None):
        msgrandom(cli, choices, dest, user)

    return func

def ns(cli, *args):
    msg(cli, "NickServ", " ".join(args))


def cs(cli, *args):
    msg(cli, "ChanServ", " ".join(args))


def identify(cli, passwd, authuser="NickServ"):
    msg(cli, authuser, "IDENTIFY %s" % passwd)


def quit(cli, msg):
    cli.send("QUIT %s" % (msg))


def nick(cli, nick):
    cli.send("NICK", nick)


def user(cli, username, realname):
    cli.send("USER", username, "0", "*", ":" + realname)


def join(cli, channel):
    """Protocol potentially allows multiple channels or keys."""
    cli.send("JOIN", channel)


def part(cli, channel):
    cli.send("PART", channel)


def notice(cli, target, text):
    cli.send("NOTICE", target, text)


def invite(cli, nick, channel):
    cli.send("INVITE", nick, channel)


def _addNumerics():
    import sys
    from oyoyo import ircevents

    def numericcmd(cmd_num, cmd_name):
        def f(cli, *args):
            cli.send(cmd_num, *args)

        return f

    m = sys.modules[__name__]
    for num, name in ircevents.numeric_events.items():
        setattr(m, name, numericcmd(num, name))


#_addNumerics()