# plugs/chanperm.py
#
#

""" channel permission are used to allow all user in a channel to have 
 permissions .. permission that use userstate information can not be used, 
 for that the users must be meeted to the bot
"""

__copyright__ = 'this file is in the public domain'

from gozerbot.commands import cmnds
from gozerbot.examples import examples
from gozerbot.plughelp import plughelp

plughelp.add('chanperm', 'manage channel permissions')

def handle_chanperm(bot, ievent):
    """ show channel permissions """
    chan = ievent.channel
    try:
        p = bot.channels[chan]['perms']
    except KeyError:
        ievent.reply("channel %s has no permissions set" % chan)
        return
    if p:
        ievent.reply('permissions of channel %s: ' % chan, p, dot=True)
    else:
        ievent.reply("channel %s has no permissions set" % chan)
    
cmnds.add('chanperm', handle_chanperm, 'OPER')
examples.add('chanperm', 'show channel permissions', 'chanperm')

def handle_chanpermadd(bot, ievent):
    """ add channel permission """
    try:
        perm = ievent.args[0].upper()
    except IndexError:
        ievent.missing('<perm>')
        return
    if perm in ['OPER', 'USER']:
        ievent.reply("can't set channel permission to %s" % perm)
        return
    chan = ievent.channel
    try:
        if perm in bot.channels[chan]['perms']:
            ievent.reply('channel %s already has %s permission set' % \
(chan, perm))
            return
    except KeyError, ex:
        bot.channels[chan].setdefault('perms', [])
    bot.channels[ievent.channel]['perms'].append(perm.upper())
    bot.channels.save()
    ievent.reply('%s channel perm added' % perm)
    
cmnds.add('chanperm-add', handle_chanpermadd, 'OPER', allowqueue=False)
examples.add('chanperm-add', 'add channel permission <perm>', \
'chanperm-add ANONKARMA')

def handle_chanpermdel(bot, ievent):
    """ delete channel permission """
    try:
        perm = ievent.args[0]
    except IndexError:
        ievent.missing('<perm>')
        return
    chan = ievent.channel
    try:
        bot.channels[chan]['perms'].remove(perm.upper())
        ievent.reply('%s channel perm deleted' % perm)
    except (ValueError, KeyError):
        ievent.reply('there is no %s permission for channel %s' % (perm, chan))

cmnds.add('chanperm-del', handle_chanpermdel, 'OPER')
examples.add('chanperm-del', 'delete channel permission <perm>', \
'chanperm-del ANONKARMA')