#!/usr/bin/env python2
# -*- coding: utf-8 -*-

# jp: a SàT command line tool
# Copyright (C) 2009-2016 Jérôme Poisson (goffi@goffi.org)

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.

# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.


import base
from sat.core.i18n import _
from sat_frontends.jp.constants import Const as C
from functools import partial
from dateutil import parser as du_parser
import calendar
import time

__commands__ = ["Event"]

# TODO: move date parsing to base, it may be useful for other commands


class Get(base.CommandBase):

    def __init__(self, host):
        base.CommandBase.__init__(self,
                                  host,
                                  'get',
                                  use_output=C.OUTPUT_DICT,
                                  use_pubsub_node_req=True,
                                  use_verbose=True,
                                  help=_(u'get event data'))
        self.need_loop=True

    def add_parser_options(self):
        self.parser.add_argument("-i", "--item", type=base.unicode_decoder, default=u'', help=_(u"ID of the PubSub Item"))

    def eventInviteeGetCb(self, result):
        event_date, event_data = result
        event_data['date'] = event_date
        self.output(event_data)
        self.host.quit()

    def start(self):
        self.host.bridge.eventGet(
            self.args.service,
            self.args.node,
            self.args.item,
            self.profile,
            callback=self.eventInviteeGetCb,
            errback=partial(self.errback,
                            msg=_(u"can't get event data: {}"),
                            exit_code=C.EXIT_BRIDGE_ERRBACK))


class EventBase(object):

    def add_parser_options(self):
        self.parser.add_argument("-i", "--id", type=base.unicode_decoder, default=u'', help=_(u"ID of the PubSub Item"))
        self.parser.add_argument("-d", "--date", type=unicode, help=_(u"date of the event"))
        self.parser.add_argument("-f", "--field", type=base.unicode_decoder, action='append', nargs=2, dest='fields',
                                 metavar=(u"KEY", u"VALUE"), help=_(u"configuration field to set"))

    def parseFields(self):
        return dict(self.args.fields) if self.args.fields else {}

    def parseDate(self):
        if self.args.date:
            try:
                date = int(self.args.date)
            except ValueError:
                try:
                    date_time = du_parser.parse(self.args.date, dayfirst=not (u'-' in self.args.date))
                except ValueError as e:
                    self.parser.error(_(u"Can't parse date: {msg}").format(msg=e))
                if date_time.tzinfo is None:
                    date = calendar.timegm(date_time.timetuple())
                else:
                    date = time.mktime(date_time.timetuple())
        else:
            date = -1
        return date


class Create(EventBase, base.CommandBase):
    def __init__(self, host):
        super(Create, self).__init__(host, 'create', use_pubsub_node_req=True, help=_('create or replace event'))
        EventBase.__init__(self)
        self.need_loop=True

    def eventCreateCb(self, node):
        self.disp(_(u'Event created successfuly on node {node}').format(node=node))
        self.host.quit()

    def start(self):
        fields = self.parseFields()
        date = self.parseDate()
        self.host.bridge.eventCreate(
            date,
            fields,
            self.args.service,
            self.args.node,
            self.args.id,
            self.profile,
            callback=self.eventCreateCb,
            errback=partial(self.errback,
                            msg=_(u"can't create event: {}"),
                            exit_code=C.EXIT_BRIDGE_ERRBACK))


class Modify(EventBase, base.CommandBase):
    def __init__(self, host):
        super(Modify, self).__init__(host, 'modify', use_pubsub_node_req=True, help=_('modify an existing event'))
        EventBase.__init__(self)
        self.need_loop=True

    def start(self):
        fields = self.parseFields()
        date = 0 if not self.args.date else self.parseDate()
        self.host.bridge.eventModify(
            self.args.service,
            self.args.node,
            self.args.id,
            date,
            fields,
            self.profile,
            callback=self.host.quit,
            errback=partial(self.errback,
                            msg=_(u"can't update event data: {}"),
                            exit_code=C.EXIT_BRIDGE_ERRBACK))


class InviteeGet(base.CommandBase):

    def __init__(self, host):
        base.CommandBase.__init__(self,
                                  host,
                                  'get',
                                  use_output=C.OUTPUT_DICT,
                                  use_pubsub_node_req=True,
                                  use_verbose=True,
                                  help=_(u'get event attendance'))
        self.need_loop=True

    def add_parser_options(self):
        pass

    def eventInviteeGetCb(self, event_data):
        self.output(event_data)
        self.host.quit()

    def start(self):
        self.host.bridge.eventInviteeGet(
            self.args.service,
            self.args.node,
            self.profile,
            callback=self.eventInviteeGetCb,
            errback=partial(self.errback,
                            msg=_(u"can't get event data: {}"),
                            exit_code=C.EXIT_BRIDGE_ERRBACK))


class InviteeSet(base.CommandBase):
    def __init__(self, host):
        super(InviteeSet, self).__init__(host, 'set', use_output=C.OUTPUT_DICT, use_pubsub_node_req=True, help=_('set event attendance'))
        self.need_loop=True

    def add_parser_options(self):
        self.parser.add_argument("-f", "--field", type=base.unicode_decoder, action='append', nargs=2, dest='fields',
                                 metavar=(u"KEY", u"VALUE"), help=_(u"configuration field to set"))

    def start(self):
        fields = dict(self.args.fields) if self.args.fields else {}
        self.host.bridge.eventInviteeSet(
            self.args.service,
            self.args.node,
            fields,
            self.profile,
            callback=self.host.quit,
            errback=partial(self.errback,
                            msg=_(u"can't set event data: {}"),
                            exit_code=C.EXIT_BRIDGE_ERRBACK))


class Invitee(base.CommandBase):
    subcommands = (InviteeGet, InviteeSet)

    def __init__(self, host):
        super(Invitee, self).__init__(host, 'invitee', use_profile=False, help=_(u'manage invities'))


class Event(base.CommandBase):
    subcommands = (Get, Create, Modify, Invitee)

    def __init__(self, host):
        super(Event, self).__init__(host, 'event', use_profile=False, help=_('event management'))