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

# SAT plugin for Pubsub Schemas
# Copyright (C) 2009-2017 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/>.

from sat.core.i18n import _
from sat.core.constants import Const as C
from twisted.words.protocols.jabber import jid
from twisted.internet import defer
from wokkel import generic
from sat.tools import utils
from sat.tools.common import uri
from sat.core.log import getLogger
import shortuuid
log = getLogger(__name__)

NS_TICKETS = 'org.salut-a-toi.tickets:0'

PLUGIN_INFO = {
    C.PI_NAME: _("Tickets management"),
    C.PI_IMPORT_NAME: "TICKETS",
    C.PI_TYPE: "EXP",
    C.PI_PROTOCOLS: [],
    C.PI_DEPENDENCIES: ["XEP-0060", "PUBSUB_SCHEMA", "XEP-0277", "IDENTITY"],
    C.PI_MAIN: "Tickets",
    C.PI_HANDLER: "no",
    C.PI_DESCRIPTION: _("""Tickets management plugin""")
}


class Tickets(object):

    def __init__(self, host):
        log.info(_(u"Tickets plugin initialization"))
        self.host = host
        host.registerNamespace('tickets', NS_TICKETS)
        self._p = self.host.plugins["XEP-0060"]
        self._s = self.host.plugins["PUBSUB_SCHEMA"]
        self._m = self.host.plugins["XEP-0277"]
        self._i = self.host.plugins["IDENTITY"]
        host.bridge.addMethod("ticketsGet", ".plugin",
                              in_sign='ssiassa{ss}s', out_sign='(asa{ss})',
                              method=self._get,
                              async=True
                              )
        host.bridge.addMethod("ticketsSet", ".plugin",
                              in_sign='ssa{sas}ssa{ss}s', out_sign='s',
                              method=self._set,
                              async=True)
        host.bridge.addMethod("ticketsSchemaGet", ".plugin",
                              in_sign='sss', out_sign='s',
                              method=self._getSchema,
                              async=True)

    def _reporterFilter(self, client, form_xmlui, widget_type, args, kwargs):
        if not args[0]:
            # if reporter is not filled, we use user part of publisher
            # (if we have it)
            try:
                publisher = jid.JID(form_xmlui.named_widgets['publisher'].value)
            except (KeyError, RuntimeError):
                pass
            else:
                args[0] = publisher.user.capitalize()
        return widget_type, args, kwargs

    def _labelsFilter(self, form_xmlui, widget_type, args, kwargs):
        if widget_type != u'textbox':
            return widget_type, args, kwargs
        widget_type = u'list'
        options = [o for o in args.pop(0).split(u'\n') if o]
        kwargs = {'options': options,
                  'name': kwargs.get('name'),
                  'styles': (u'noselect', u'extensible', u'reducible')}
        return widget_type, args, kwargs

    def _dateFilter(self, form_xmlui, widget_type, args, kwargs):
        if widget_type != u'string':
            return widget_type, args, kwargs
        # we convert XMPP date to timestamp
        args[0] = unicode(utils.date_parse(args[0]))
        return widget_type, args, kwargs

    def _get(self, service='', node='', max_items=10, item_ids=None, sub_id=None, extra_dict=None, profile_key=C.PROF_KEY_NONE):
        client = self.host.getClient(profile_key)
        service = jid.JID(service) if service else None
        max_items = None if max_items == C.NO_LIMIT else max_items
        extra = self._p.parseExtra(extra_dict)
        d = self.get(client, service, node or None, max_items, item_ids, sub_id or None, extra.rsm_request, extra.extra)
        d.addCallback(self._p.serItemsData)
        return d

    @defer.inlineCallbacks
    def get(self, client, service=None, node=None, max_items=None, item_ids=None, sub_id=None, rsm_request=None, extra=None):
        """Retrieve tickets and convert them to XMLUI

        @param node(unicode, None): PubSub node to use
            if None, default ticket node will be used
        other parameters as the same as for [XEP_0060.getItems]
        @return (list[unicode]): XMLUI of the tickets
        """
        if not node:
            node = NS_TICKETS
        filters = {u'reporter': lambda *args: self._reporterFilter(client, *args),
                   u'labels': self._labelsFilter,
                   u'created': self._dateFilter,
                   u'updated': self._dateFilter,
                   }
        tickets, metadata = yield self._s.getDataFormItems(
            client,
            NS_TICKETS,
            service,
            node,
            max_items = max_items,
            item_ids = item_ids,
            sub_id = sub_id,
            rsm_request = rsm_request,
            extra = extra,
            filters = filters,
            )

        defer.returnValue((tickets, metadata))

    def _set(self, service, node, values, schema=None, item_id=None, extra=None, profile_key=C.PROF_KEY_NONE):
        client = self.host.getClient(profile_key)
        service = None if not service else jid.JID(service)
        if schema:
            schema = generic.parseXml(schema.encode('utf-8'))
        else:
            schema = None
        d = self.set(client, service, node or None, values, schema, item_id or None, extra, deserialise=True)
        d.addCallback(lambda ret: ret or u'')
        return d

    @defer.inlineCallbacks
    def set(self, client, service, node, values, schema=None, item_id=None, extra=None, deserialise=False):
        """Publish a tickets

        @param node(unicode, None): Pubsub node to use
            None to use default tickets node
        @param values(dict[key(unicode), [iterable[object], object]]): values of the ticket
            if not iterable, will be put in a list
            'created' and 'updated' will be forced to current time:
                - 'created' is set if item_id is None, i.e. if it's a new ticket
                - 'updated' is set everytime
        other arguments are same as for [self._s.sendDataFormItem]
        @return (unicode): id of the created item
        """
        if not node:
            node = NS_TICKETS
        now = utils.xmpp_date()
        if not item_id:
            values['created'] = now
            comments_service = yield self._m.getCommentsService(client, service)

            # we need to use uuid for comments node, because we don't know item id in advance
            # (we don't want to set it ourselves to let the server choose, so we can have
            #  a nicer id if serial ids is activated)
            comments_node = self._m.getCommentsNode(node + u'_' + unicode(shortuuid.uuid()))
            options = {self._p.OPT_ACCESS_MODEL: self._p.ACCESS_OPEN,
                       self._p.OPT_PERSIST_ITEMS: 1,
                       self._p.OPT_MAX_ITEMS: -1,
                       self._p.OPT_DELIVER_PAYLOADS: 1,
                       self._p.OPT_SEND_ITEM_SUBSCRIBE: 1,
                       self._p.OPT_PUBLISH_MODEL: self._p.ACCESS_OPEN,
                       }
            yield self._p.createNode(client, comments_service, comments_node, options)
            values['comments_uri'] = uri.buildXMPPUri(u'pubsub', subtype='microblog', path=comments_service.full(), node=comments_node)

        values['updated'] = now
        if not values.get('reporter'):
            identity = yield self._i.getIdentity(client, client.jid)
            values['reporter'] = identity['nick']
        if not values.get('reporter_jid'):
            values['reporter_jid'] = client.jid.full()
        item_id = yield self._s.sendDataFormItem(client, service, node, values, schema, item_id, extra, deserialise)
        defer.returnValue(item_id)

    def _getSchema(self, service, node, profile_key=C.PROF_KEY_NONE):
        if not node:
            node = NS_TICKETS
        return self._s._getUISchema(service, node, profile_key)