# Copyright (C) 2010-2014 Yann Leboulanger <asterix AT lagaule.org>
#
# This file is part of Gajim.
#
# Gajim is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published
# by the Free Software Foundation; version 3 only.
#
# Gajim 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Gajim. If not, see <http://www.gnu.org/licenses/>.

# pylint: disable=no-init
# pylint: disable=attribute-defined-outside-init

from calendar import timegm
import logging
from time import time as time_time

import OpenSSL.crypto
import nbxmpp

from gajim.common import nec
from gajim.common import helpers
from gajim.common import app
from gajim.common import i18n
from gajim.common.modules import dataforms
from gajim.common.const import KindConstant, SSLError
from gajim.common.pep import SUPPORTED_PERSONAL_USER_EVENTS
from gajim.common.jingle_transport import JingleTransportSocks5
from gajim.common.file_props import FilesProp


log = logging.getLogger('gajim.c.connection_handlers_events')

CONDITION_TO_CODE = {
    'realjid-public': 100,
    'affiliation-changed': 101,
    'unavailable-shown': 102,
    'unavailable-not-shown': 103,
    'configuration-changed': 104,
    'self-presence': 110,
    'logging-enabled': 170,
    'logging-disabled': 171,
    'non-anonymous': 172,
    'semi-anonymous': 173,
    'fully-anonymous': 174,
    'room-created': 201,
    'nick-assigned': 210,
    'banned': 301,
    'new-nick': 303,
    'kicked': 307,
    'removed-affiliation': 321,
    'removed-membership': 322,
    'removed-shutdown': 332,
}

class HelperEvent:
    def get_jid_resource(self, check_fake_jid=False):
        if check_fake_jid and hasattr(self, 'id_') and \
                self.id_ in self.conn.groupchat_jids:
            self.fjid = self.conn.groupchat_jids[self.id_]
            del self.conn.groupchat_jids[self.id_]
        else:
            self.fjid = helpers.get_full_jid_from_iq(self.stanza)
        if self.fjid is None:
            self.jid = None
        else:
            self.jid, self.resource = app.get_room_and_nick_from_fjid(self.fjid)

    def get_id(self):
        self.id_ = self.stanza.getID()

    def get_gc_control(self):
        self.gc_control = app.interface.msg_win_mgr.get_gc_control(self.jid,
                                                                     self.conn.name)

        # If gc_control is missing - it may be minimized. Try to get it
        # from there. If it's not there - then it's missing anyway and
        # will remain set to None.
        if not self.gc_control:
            minimized = app.interface.minimized_controls[self.conn.name]
            self.gc_control = minimized.get(self.jid)

    def _generate_timestamp(self, tag):
        # Make sure we use only int/float Epoch time
        if tag is None:
            self.timestamp = time_time()
            return
        try:
            tim = helpers.datetime_tuple(tag)
            self.timestamp = timegm(tim)
        except Exception:
            log.error('wrong timestamp, ignoring it: %s', tag)
            self.timestamp = time_time()

    def get_oob_data(self, stanza):
        oob_node = stanza.getTag('x', namespace=nbxmpp.NS_X_OOB)
        if oob_node is not None:
            if 'gajim' not in self.additional_data:
                self.additional_data['gajim'] = {}
            oob_url = oob_node.getTagData('url')
            if oob_url is not None:
                self.additional_data['gajim']['oob_url'] = oob_url
            oob_desc = oob_node.getTagData('desc')
            if oob_desc is not None:
                self.additional_data['gajim']['oob_desc'] = oob_desc

    def get_stanza_id(self, stanza, query=False):
        if query:
            # On a MAM query the stanza-id is maybe not set, so
            # get the id of the stanza
            return stanza.getAttr('id')
        stanza_id, by = stanza.getStanzaIDAttrs()
        if by is None:
            # We can not verify who set this stanza-id, ignore it.
            return
        if stanza.getType() == 'groupchat':
            if stanza.getFrom().bareMatch(by):
                # by attribute must match the server
                return stanza_id
        elif self.conn.get_own_jid().bareMatch(by):
            # by attribute must match the server
            return stanza_id
        return

    @staticmethod
    def get_forwarded_message(stanza):
        forwarded = stanza.getTag('forwarded',
                                  namespace=nbxmpp.NS_FORWARD,
                                  protocol=True)
        if forwarded is not None:
            return forwarded.getTag('message', protocol=True)

    def _is_self_message(self, message):
        if self.self_message is not None:
            return self.self_message
        own_jid = self.conn.get_own_jid()
        frm = message.getFrom()
        to = message.getTo()
        # If 'to' is not set we assume own jid
        self.self_message = frm.bareMatch(to or own_jid)
        return self.self_message

    def _is_muc_pm(self, message):
        if self.muc_pm is not None:
            return self.muc_pm
        self.muc_pm = False
        muc_user = message.getTag('x', namespace=nbxmpp.NS_MUC_USER)
        if muc_user is not None:
            self.muc_pm = muc_user.getChildren() == []
        return self.muc_pm

class IqErrorReceivedEvent(nec.NetworkIncomingEvent, HelperEvent):
    name = 'iq-error-received'

    def generate(self):
        self.get_id()
        self.get_jid_resource(check_fake_jid=True)
        self.errmsg = self.stanza.getErrorMsg()
        self.errcode = self.stanza.getErrorCode()
        return True

class StreamReceivedEvent(nec.NetworkIncomingEvent):
    name = 'stream-received'

class StreamConflictReceivedEvent(nec.NetworkIncomingEvent):
    name = 'stream-conflict-received'
    base_network_events = ['stream-received']

    def generate(self):
        if self.base_event.stanza.getTag('conflict'):
            self.conn = self.base_event.conn
            return True

class PresenceHelperEvent:
    def _generate_show(self):
        self.show = self.stanza.getShow()
        if self.show not in ('chat', 'away', 'xa', 'dnd'):
            self.show = '' # We ignore unknown show
        if not self.ptype and not self.show:
            self.show = 'online'
        elif self.ptype == 'unavailable':
            self.show = 'offline'

    def _generate_ptype(self):
        self.ptype = self.stanza.getType()
        if self.ptype == 'available':
            self.ptype = None
        rfc_types = ('unavailable', 'error', 'subscribe', 'subscribed',
            'unsubscribe', 'unsubscribed')
        if self.ptype and not self.ptype in rfc_types:
            self.ptype = None

class PresenceReceivedEvent(nec.NetworkIncomingEvent, HelperEvent,
PresenceHelperEvent):
    name = 'presence-received'
    base_network_events = ['raw-pres-received']

    def _generate_keyID(self, sig_tag):
        self.keyID = ''
        if sig_tag and self.conn.USE_GPG and self.ptype != 'error':
            # error presences contain our own signature
            # verify
            sig_msg = sig_tag.getData()
            self.keyID = self.conn.gpg.verify(self.status, sig_msg)
            self.keyID = helpers.prepare_and_validate_gpg_keyID(self.conn.name,
                                                                self.jid,
                                                                self.keyID)

    def _generate_prio(self):
        self.prio = self.stanza.getPriority()
        try:
            self.prio = int(self.prio)
        except Exception:
            self.prio = 0

    def generate(self):
        self.conn = self.base_event.conn
        self.stanza = self.base_event.stanza

        self.need_add_in_roster = False
        self.need_redraw = False

        self.popup = False # Do we want to open chat window ?

        if not self.conn or self.conn.connected < 2:
            log.debug('account is no more connected')
            return

        self._generate_ptype()
        try:
            self.get_jid_resource()
        except Exception:
            log.warning('Invalid JID: %s, ignoring it', self.stanza.getFrom())
            return
        jid_list = app.contacts.get_jid_list(self.conn.name)
        self.timestamp = None
        self.get_id()
        self.is_gc = False # is it a GC presence ?
        sig_tag = None
        self.avatar_sha = None
        # XEP-0172 User Nickname
        self.user_nick = self.stanza.getTagData('nick') or ''
        self.contact_nickname = None
        self.transport_auto_auth = False
        # XEP-0203
        delay_tag = self.stanza.getTag('delay', namespace=nbxmpp.NS_DELAY2)
        if delay_tag:
            self._generate_timestamp(self.stanza.timestamp)
        # XEP-0319
        self.idle_time = None
        idle_tag = self.stanza.getTag('idle', namespace=nbxmpp.NS_IDLE)
        if idle_tag:
            time_str = idle_tag.getAttr('since')
            tim = helpers.datetime_tuple(time_str)
            self.idle_time = timegm(tim)

        xtags = self.stanza.getTags('x')
        for x in xtags:
            namespace = x.getNamespace()
            if namespace in (nbxmpp.NS_MUC_USER, nbxmpp.NS_MUC):
                self.is_gc = True
            elif namespace == nbxmpp.NS_SIGNED:
                sig_tag = x
            elif namespace == nbxmpp.NS_DELAY and not self.timestamp:
                # XEP-0091
                self._generate_timestamp(self.stanza.timestamp)

        self.status = self.stanza.getStatus() or ''
        self._generate_show()
        self._generate_prio()
        self._generate_keyID(sig_tag)

        self.errcode = self.stanza.getErrorCode()
        self.errmsg = self.stanza.getErrorMsg()

        if self.is_gc:
            app.nec.push_incoming_event(
                GcPresenceReceivedEvent(
                    None, conn=self.conn, stanza=self.stanza,
                    presence_obj=self))
            return

        if self.ptype == 'error':
            return

        if not self.ptype or self.ptype == 'unavailable':
            our_jid = app.get_jid_from_account(self.conn.name)
            if self.jid == our_jid and self.resource == self.conn.server_resource:
                # We got our own presence
                app.nec.push_incoming_event(OurShowEvent(None, conn=self.conn,
                                                           show=self.show))
            elif self.jid in jid_list or self.jid == our_jid:
                return True

class ZeroconfPresenceReceivedEvent(nec.NetworkIncomingEvent):
    name = 'presence-received'

    def generate(self):
        self.jid, self.resource = app.get_room_and_nick_from_fjid(self.fjid)
        self.resource = 'local'
        self.prio = 0
        self.keyID = None
        self.idle_time = None
        self.timestamp = 0
        self.contact_nickname = None
        self.avatar_sha = None
        self.need_add_in_roster = False
        self.need_redraw = False
        if self.show == 'offline':
            self.ptype = 'unavailable'
        else:
            self.ptype = None
        self.is_gc = False
        self.user_nick = ''
        self.transport_auto_auth = False
        self.errcode = None
        self.errmsg = ''
        self.popup = False # Do we want to open chat window ?
        return True

class GcPresenceReceivedEvent(nec.NetworkIncomingEvent, HelperEvent):
    name = 'gc-presence-received'

    def generate(self):
        self.ptype = self.presence_obj.ptype
        self.fjid = self.presence_obj.fjid
        self.jid = self.presence_obj.jid
        self.room_jid = self.presence_obj.jid
        self.nick = self.presence_obj.resource
        self.show = self.presence_obj.show
        self.status = self.presence_obj.status
        self.avatar_sha = self.presence_obj.avatar_sha
        self.errcode = self.presence_obj.errcode
        self.errmsg = self.presence_obj.errmsg
        self.errcon = self.stanza.getError()
        self.get_gc_control()
        self.gc_contact = app.contacts.get_gc_contact(self.conn.name,
            self.room_jid, self.nick)

        if self.ptype == 'error':
            return True

        if self.ptype and self.ptype != 'unavailable':
            return
        if app.config.get('log_contact_status_changes') and \
        app.config.should_log(self.conn.name, self.room_jid):
            if self.gc_contact:
                jid = self.gc_contact.jid
            else:
                jid = self.stanza.getJid()
            st = self.status
            if jid:
                # we know real jid, save it in db
                st += ' (%s)' % jid
            show = app.logger.convert_show_values_to_db_api_values(self.show)
            if show is not None:
                fjid = nbxmpp.JID(self.fjid)
                app.logger.insert_into_logs(self.conn.name,
                                            fjid.getStripped(),
                                            time_time(),
                                            KindConstant.GCSTATUS,
                                            contact_name=fjid.getResource(),
                                            message=st,
                                            show=show)


        # NOTE: if it's a gc presence, don't ask vcard here.
        # We may ask it to real jid in gui part.
        self.status_code = []
        ns_muc_user_x = self.stanza.getTag('x', namespace=nbxmpp.NS_MUC_USER)
        if ns_muc_user_x:
            destroy = ns_muc_user_x.getTag('destroy')
        else:
            destroy = None
        if ns_muc_user_x and destroy:
            # Room has been destroyed. see
            # http://www.xmpp.org/extensions/xep-0045.html#destroyroom
            self.reason = _('Room has been destroyed')
            r = destroy.getTagData('reason')
            if r:
                self.reason += ' (%s)' % r
            if destroy.getAttr('jid'):
                try:
                    jid = helpers.parse_jid(destroy.getAttr('jid'))
                    self.reason += '\n' + \
                        _('You can join this room instead: %s') % jid
                except helpers.InvalidFormat:
                    pass
            self.status_code = ['destroyed']
        else:
            self.reason = self.stanza.getReason()
            conditions = self.stanza.getStatusConditions()
            if conditions:
                self.status_code = []
                for condition in conditions:
                    if condition in CONDITION_TO_CODE:
                        self.status_code.append(CONDITION_TO_CODE[condition])
            else:
                self.status_code = self.stanza.getStatusCode()

        self.role = self.stanza.getRole()
        self.affiliation = self.stanza.getAffiliation()
        self.real_jid = self.stanza.getJid()
        self.actor = self.stanza.getActor()
        self.new_nick = self.stanza.getNewNick()
        return True

class OurShowEvent(nec.NetworkIncomingEvent):
    name = 'our-show'

class BeforeChangeShowEvent(nec.NetworkIncomingEvent):
    name = 'before-change-show'

class GcMessageReceivedEvent(nec.NetworkIncomingEvent):
    name = 'gc-message-received'

    def generate(self):
        self.stanza = self.msg_obj.stanza
        if not hasattr(self.msg_obj, 'additional_data'):
            self.additional_data = {}
        else:
            self.additional_data = self.msg_obj.additional_data
        self.id_ = self.msg_obj.stanza.getID()
        self.unique_id = self.msg_obj.unique_id
        self.fjid = self.msg_obj.fjid
        self.msgtxt = self.msg_obj.msgtxt
        self.jid = self.msg_obj.jid
        self.room_jid = self.msg_obj.jid
        self.nickname = self.msg_obj.resource
        self.timestamp = self.msg_obj.timestamp
        self.xhtml_msgtxt = self.stanza.getXHTML()
        self.encrypted = self.msg_obj.encrypted
        self.correct_id = None # XEP-0308
        self.delayed = self.msg_obj.delayed

        if app.config.get('ignore_incoming_xhtml'):
            self.xhtml_msgtxt = None

        if self.msg_obj.resource:
            # message from someone
            self.nick = self.msg_obj.resource
        else:
            # message from server
            self.nick = ''

        self.subject = self.stanza.getSubject()

        if self.subject is not None:
            app.nec.push_incoming_event(
                nec.NetworkEvent('gc-subject-received',
                                 nickname=self.msg_obj.resource,
                                 **vars(self.msg_obj)))
            return

        conditions = self.stanza.getStatusConditions()
        if conditions:
            self.status_code = []
            for condition in conditions:
                if condition in CONDITION_TO_CODE:
                    self.status_code.append(CONDITION_TO_CODE[condition])
        else:
            self.status_code = self.stanza.getStatusCode()

        if not self.stanza.getTag('body'): # no <body>
            # It could be a config change. See
            # http://www.xmpp.org/extensions/xep-0045.html#roomconfig-notify
            if self.stanza.getTag('x'):
                if self.status_code != []:
                    app.nec.push_incoming_event(GcConfigChangedReceivedEvent(
                        None, conn=self.conn, msg_event=self))
            if self.msg_obj.form_node:
                # It could be a voice request. See
                # http://www.xmpp.org/extensions/xep-0045.html#voiceapprove
                from gajim.gtk.single_message import SingleMessageWindow
                SingleMessageWindow(
                    self.conn.name, self.fjid,
                    action='receive', from_whom=self.fjid,
                    subject='', message='', resource='', session=None,
                    form_node=self.msg_obj.form_node)
            return

        from gajim.common.modules.security_labels import parse_securitylabel
        self.displaymarking = parse_securitylabel(self.stanza)

        self.captcha_form = None
        captcha_tag = self.stanza.getTag('captcha', namespace=nbxmpp.NS_CAPTCHA)
        if captcha_tag:
            self.captcha_form = captcha_tag.getTag('x',
                namespace=nbxmpp.NS_DATA)
            for field in self.captcha_form.getTags('field'):
                for media in field.getTags('media'):
                    for uri in media.getTags('uri'):
                        uri_data = uri.getData()
                        if uri_data.startswith('cid:'):
                            uri_data = uri_data[4:]
                            found = False
                            for data in self.stanza.getTags('data',
                            namespace=nbxmpp.NS_BOB):
                                if data.getAttr('cid') == uri_data:
                                    uri.setData(data.getData())
                                    found = True
                            if not found:
                                self.conn.get_bob_data(uri_data, self.fjid,
                                    self.conn._dispatch_gc_msg_with_captcha,
                                    [self.stanza, self.msg_obj], 0)
                                return

        from gajim.common.modules.misc import parse_correction
        self.correct_id = parse_correction(self.stanza)

        return True

class GcConfigChangedReceivedEvent(nec.NetworkIncomingEvent):
    name = 'gc-config-changed-received'

    def generate(self):
        self.conn = self.msg_event.conn
        self.stanza = self.msg_event.stanza
        self.room_jid = self.msg_event.room_jid
        self.status_code = self.msg_event.status_code
        return True

class MessageSentEvent(nec.NetworkIncomingEvent):
    name = 'message-sent'

    def generate(self):
        if not self.automatic_message:
            self.conn.sent_message_ids.append(self.stanza_id)
            # only record the last 20000 message ids (should be about 1MB [36 byte per uuid]
            # and about 24 hours if you send out a message every 5 seconds)
            self.conn.sent_message_ids = self.conn.sent_message_ids[-20000:]
        return True

class MessageNotSentEvent(nec.NetworkIncomingEvent):
    name = 'message-not-sent'

class MessageErrorEvent(nec.NetworkIncomingEvent, HelperEvent):
    name = 'message-error'

    def init(self):
        self.zeroconf = False

    def generate(self):
        if self.zeroconf:
            return True
        self.get_id()
        #only alert for errors of explicitly sent messages (see https://trac.gajim.org/ticket/8222)
        if self.id_ in self.conn.sent_message_ids:
            self.conn.sent_message_ids.remove(self.id_)
            return True
        return False

class AnonymousAuthEvent(nec.NetworkIncomingEvent):
    name = 'anonymous-auth'

class JingleRequestReceivedEvent(nec.NetworkIncomingEvent):
    name = 'jingle-request-received'

    def generate(self):
        self.fjid = self.jingle_session.peerjid
        self.jid, self.resource = app.get_room_and_nick_from_fjid(self.fjid)
        self.sid = self.jingle_session.sid
        return True

class JingleConnectedReceivedEvent(nec.NetworkIncomingEvent):
    name = 'jingle-connected-received'

    def generate(self):
        self.fjid = self.jingle_session.peerjid
        self.jid, self.resource = app.get_room_and_nick_from_fjid(self.fjid)
        self.sid = self.jingle_session.sid
        return True

class JingleDisconnectedReceivedEvent(nec.NetworkIncomingEvent):
    name = 'jingle-disconnected-received'

    def generate(self):
        self.fjid = self.jingle_session.peerjid
        self.jid, self.resource = app.get_room_and_nick_from_fjid(self.fjid)
        self.sid = self.jingle_session.sid
        return True

class JingleTransferCancelledEvent(nec.NetworkIncomingEvent):
    name = 'jingleFT-cancelled-received'

    def generate(self):
        self.fjid = self.jingle_session.peerjid
        self.jid, self.resource = app.get_room_and_nick_from_fjid(self.fjid)
        self.sid = self.jingle_session.sid
        return True

class JingleErrorReceivedEvent(nec.NetworkIncomingEvent):
    name = 'jingle-error-received'

    def generate(self):
        self.fjid = self.jingle_session.peerjid
        self.jid, self.resource = app.get_room_and_nick_from_fjid(self.fjid)
        self.sid = self.jingle_session.sid
        return True

class AccountCreatedEvent(nec.NetworkIncomingEvent):
    name = 'account-created'

class AccountNotCreatedEvent(nec.NetworkIncomingEvent):
    name = 'account-not-created'

class NewAccountConnectedEvent(nec.NetworkIncomingEvent):
    name = 'new-account-connected'

    def generate(self):
        try:
            self.errnum = self.conn.connection.Connection.ssl_errnum
        except AttributeError:
            self.errnum = 0 # we don't have an errnum
        self.ssl_msg = ''
        if self.errnum > 0:
            self.ssl_msg = SSLError.get(self.errnum,
                _('Unknown SSL error: %d') % self.errnum)
        self.ssl_cert = ''
        self.ssl_fingerprint_sha1 = ''
        self.ssl_fingerprint_sha256 = ''
        if self.conn.connection.Connection.ssl_certificate:
            cert = self.conn.connection.Connection.ssl_certificate
            self.ssl_cert = OpenSSL.crypto.dump_certificate(
                OpenSSL.crypto.FILETYPE_PEM, cert).decode('utf-8')
            self.ssl_fingerprint_sha1 = cert.digest('sha1').decode('utf-8')
            self.ssl_fingerprint_sha256 = cert.digest('sha256').decode('utf-8')
        return True

class NewAccountNotConnectedEvent(nec.NetworkIncomingEvent):
    name = 'new-account-not-connected'

class ConnectionTypeEvent(nec.NetworkIncomingEvent):
    name = 'connection-type'

class StanzaReceivedEvent(nec.NetworkIncomingEvent):
    name = 'stanza-received'

    def init(self):
        self.additional_data = {}

    def generate(self):
        return True

class StanzaSentEvent(nec.NetworkIncomingEvent):
    name = 'stanza-sent'

    def init(self):
        self.additional_data = {}

class AgentRemovedEvent(nec.NetworkIncomingEvent):
    name = 'agent-removed'

    def generate(self):
        self.jid_list = []
        for jid in app.contacts.get_jid_list(self.conn.name):
            if jid.endswith('@' + self.agent):
                self.jid_list.append(jid)
        return True

class BadGPGPassphraseEvent(nec.NetworkIncomingEvent):
    name = 'bad-gpg-passphrase'

    def generate(self):
        self.account = self.conn.name
        self.use_gpg_agent = app.config.get('use_gpg_agent')
        self.keyID = app.config.get_per('accounts', self.conn.name, 'keyid')
        return True

class ConnectionLostEvent(nec.NetworkIncomingEvent):
    name = 'connection-lost'

    def generate(self):
        app.nec.push_incoming_event(OurShowEvent(None, conn=self.conn,
            show='offline'))
        return True

class GPGTrustKeyEvent(nec.NetworkIncomingEvent):
    name = 'gpg-trust-key'

class GPGPasswordRequiredEvent(nec.NetworkIncomingEvent):
    name = 'gpg-password-required'

    def generate(self):
        self.keyid = app.config.get_per('accounts', self.conn.name, 'keyid')
        return True

class PEPReceivedEvent(nec.NetworkIncomingEvent, HelperEvent):
    name = 'pep-received'

    def generate(self):
        if not self.stanza.getTag('event'):
            return
        if self.stanza.getTag('error'):
            log.debug('PEPReceivedEvent received error stanza. Ignoring')
            return

        try:
            self.get_jid_resource()
        except Exception:
            return

        self.event_tag = self.stanza.getTag('event')

        for pep_class in SUPPORTED_PERSONAL_USER_EVENTS:
            pep = pep_class.get_tag_as_PEP(self.fjid, self.conn.name,
                self.event_tag)
            if pep:
                self.pep_type = pep.type_
                return True

class PlainConnectionEvent(nec.NetworkIncomingEvent):
    name = 'plain-connection'

class InsecurePasswordEvent(nec.NetworkIncomingEvent):
    name = 'insecure-password'

class InsecureSSLConnectionEvent(nec.NetworkIncomingEvent):
    name = 'insecure-ssl-connection'

class SSLErrorEvent(nec.NetworkIncomingEvent):
    name = 'ssl-error'

class UniqueRoomIdSupportedEvent(nec.NetworkIncomingEvent):
    name = 'unique-room-id-supported'

class UniqueRoomIdNotSupportedEvent(nec.NetworkIncomingEvent):
    name = 'unique-room-id-not-supported'

class NonAnonymousServerErrorEvent(nec.NetworkIncomingEvent):
    name = 'non-anonymous-server-error'

class UpdateGCAvatarEvent(nec.NetworkIncomingEvent):
    name = 'update-gc-avatar'

    def generate(self):
        return True

class UpdateRosterAvatarEvent(nec.NetworkIncomingEvent):
    name = 'update-roster-avatar'

    def generate(self):
        return True

class UpdateRoomAvatarEvent(nec.NetworkIncomingEvent):
    name = 'update-room-avatar'

    def generate(self):
        return True

class ZeroconfNameConflictEvent(nec.NetworkIncomingEvent):
    name = 'zeroconf-name-conflict'

class PasswordRequiredEvent(nec.NetworkIncomingEvent):
    name = 'password-required'

class Oauth2CredentialsRequiredEvent(nec.NetworkIncomingEvent):
    name = 'oauth2-credentials-required'

class SignedInEvent(nec.NetworkIncomingEvent):
    name = 'signed-in'

class FileRequestReceivedEvent(nec.NetworkIncomingEvent, HelperEvent):
    name = 'file-request-received'

    def init(self):
        self.jingle_content = None
        self.FT_content = None

    def generate(self):
        self.get_id()
        self.fjid = self.conn._ft_get_from(self.stanza)
        self.jid = app.get_jid_without_resource(self.fjid)
        if self.jingle_content:
            secu = self.jingle_content.getTag('security')
            self.FT_content.use_security = bool(secu)
            if secu:
                fingerprint = secu.getTag('fingerprint')
                if fingerprint:
                    self.FT_content.x509_fingerprint = fingerprint.getData()
            if not self.FT_content.transport:
                self.FT_content.transport = JingleTransportSocks5()
                self.FT_content.transport.set_our_jid(
                    self.FT_content.session.ourjid)
                self.FT_content.transport.set_connection(
                    self.FT_content.session.connection)
            sid = self.stanza.getTag('jingle').getAttr('sid')
            self.file_props = FilesProp.getNewFileProp(self.conn.name, sid)
            self.file_props.transport_sid = self.FT_content.transport.sid
            self.FT_content.file_props = self.file_props
            self.FT_content.transport.set_file_props(self.file_props)
            self.file_props.streamhosts.extend(
                    self.FT_content.transport.remote_candidates)
            for host in self.file_props.streamhosts:
                host['initiator'] = self.FT_content.session.initiator
                host['target'] = self.FT_content.session.responder
            self.file_props.session_type = 'jingle'
            self.file_props.stream_methods = nbxmpp.NS_BYTESTREAM
            desc = self.jingle_content.getTag('description')
            if self.jingle_content.getAttr('creator') == 'initiator':
                file_tag = desc.getTag('file')
                self.file_props.sender = self.fjid
                self.file_props.receiver = self.conn._ft_get_our_jid()
            else:
                file_tag = desc.getTag('file')
                h = file_tag.getTag('hash')
                h = h.getData() if h else None
                n = file_tag.getTag('name')
                n = n.getData() if n else None
                pjid = app.get_jid_without_resource(self.fjid)
                file_info = self.conn.get_file_info(
                    pjid, hash_=h, name=n, account=self.conn.name)
                self.file_props.file_name = file_info['file-name']
                self.file_props.sender = self.conn._ft_get_our_jid()
                self.file_props.receiver = self.fjid
                self.file_props.type_ = 's'
            for child in file_tag.getChildren():
                name = child.getName()
                val = child.getData()
                if val is None:
                    continue
                if name == 'name':
                    self.file_props.name = val
                if name == 'size':
                    self.file_props.size = int(val)
                if name == 'hash':
                    self.file_props.algo = child.getAttr('algo')
                    self.file_props.hash_ = val
                if name == 'date':
                    self.file_props.date = val
        else:
            si = self.stanza.getTag('si')
            self.file_props = FilesProp.getNewFileProp(self.conn.name,
                si.getAttr('id'))
            self.file_props.transport_sid = self.file_props.sid
            profile = si.getAttr('profile')
            if profile != nbxmpp.NS_FILE:
                self.conn.send_file_rejection(self.file_props, code='400',
                    typ='profile')
                raise nbxmpp.NodeProcessed
            feature_tag = si.getTag('feature', namespace=nbxmpp.NS_FEATURE)
            if not feature_tag:
                return
            form_tag = feature_tag.getTag('x', namespace=nbxmpp.NS_DATA)
            if not form_tag:
                return
            self.dataform = dataforms.extend_form(node=form_tag)
            for f in self.dataform.iter_fields():
                if f.var == 'stream-method' and f.type_ == 'list-single':
                    values = [o[1] for o in f.options]
                    self.file_props.stream_methods = ' '.join(values)
                    if nbxmpp.NS_BYTESTREAM in values or \
                    nbxmpp.NS_IBB in values:
                        break
            else:
                self.conn.send_file_rejection(self.file_props, code='400',
                    typ='stream')
                raise nbxmpp.NodeProcessed
            file_tag = si.getTag('file')
            for name, val in file_tag.getAttrs().items():
                if val is None:
                    continue
                if name == 'name':
                    self.file_props.name = val
                if name == 'size':
                    self.file_props.size = int(val)
            mime_type = si.getAttr('mime-type')
            if mime_type is not None:
                self.file_props.mime_type = mime_type
            self.file_props.sender = self.fjid
            self.file_props.receiver = self.conn._ft_get_our_jid()
        self.file_props.request_id = self.id_
        file_desc_tag = file_tag.getTag('desc')
        if file_desc_tag is not None:
            self.file_props.desc = file_desc_tag.getData()
        self.file_props.transfered_size = []
        return True

class FileRequestErrorEvent(nec.NetworkIncomingEvent):
    name = 'file-request-error'

    def generate(self):
        self.jid = app.get_jid_without_resource(self.jid)
        return True

class FileTransferCompletedEvent(nec.NetworkIncomingEvent):
    name = 'file-transfer-completed'

    def generate(self):
        jid = str(self.file_props.receiver)
        self.jid = app.get_jid_without_resource(jid)
        return True

class GatewayPromptReceivedEvent(nec.NetworkIncomingEvent, HelperEvent):
    name = 'gateway-prompt-received'

    def generate(self):
        self.get_jid_resource()
        query = self.stanza.getTag('query')
        if query:
            self.desc = query.getTagData('desc')
            self.prompt = query.getTagData('prompt')
            self.prompt_jid = query.getTagData('jid')
        else:
            self.desc = None
            self.prompt = None
            self.prompt_jid = None
        return True

class NotificationEvent(nec.NetworkIncomingEvent):
    name = 'notification'
    base_network_events = ['decrypted-message-received',
                           'gc-message-received',
                           'presence-received']

    def generate(self):
        # what's needed to compute output
        self.account = self.base_event.conn.name
        self.conn = self.base_event.conn
        self.jid = ''
        self.control = None
        self.control_focused = False
        self.first_unread = False

        # For output
        self.do_sound = False
        self.sound_file = ''
        self.sound_event = '' # gajim sound played if not sound_file is set
        self.show_popup = False

        self.do_popup = False
        self.popup_title = ''
        self.popup_text = ''
        self.popup_event_type = ''
        self.popup_msg_type = ''
        self.icon_name = None
        self.transport_name = None
        self.show = None
        self.popup_timeout = -1

        self.do_command = False
        self.command = ''

        self.show_in_notification_area = False
        self.show_in_roster = False

        self.detect_type()

        if self.notif_type == 'msg':
            self.handle_incoming_msg_event(self.base_event)
        elif self.notif_type == 'gc-msg':
            self.handle_incoming_gc_msg_event(self.base_event)
        elif self.notif_type == 'pres':
            self.handle_incoming_pres_event(self.base_event)
        return True

    def detect_type(self):
        if self.base_event.name == 'decrypted-message-received':
            self.notif_type = 'msg'
        if self.base_event.name == 'gc-message-received':
            self.notif_type = 'gc-msg'
        if self.base_event.name == 'presence-received':
            self.notif_type = 'pres'

    def handle_incoming_msg_event(self, msg_obj):
        # don't alert for carbon copied messages from ourselves
        if msg_obj.sent:
            return
        if not msg_obj.msgtxt:
            return
        self.jid = msg_obj.jid
        if msg_obj.mtype == 'pm':
            self.jid = msg_obj.fjid

        self.control = app.interface.msg_win_mgr.search_control(
            msg_obj.jid, self.account, msg_obj.resource)

        if self.control is None:
            if len(app.events.get_events(
                    self.account, msg_obj.jid, [msg_obj.mtype])) <= 1:
                self.first_unread = True
        else:
            self.control_focused = self.control.has_focus()

        if msg_obj.mtype == 'pm':
            nick = msg_obj.resource
        else:
            nick = app.get_name_from_jid(self.conn.name, self.jid)

        if self.first_unread:
            self.sound_event = 'first_message_received'
        elif self.control_focused:
            self.sound_event = 'next_message_received_focused'
        else:
            self.sound_event = 'next_message_received_unfocused'

        if app.config.get('notification_preview_message'):
            self.popup_text = msg_obj.msgtxt
            if self.popup_text and (self.popup_text.startswith('/me ') or \
            self.popup_text.startswith('/me\n')):
                self.popup_text = '* ' + nick + self.popup_text[3:]
        else:
            # We don't want message preview, do_preview = False
            self.popup_text = ''

        if msg_obj.mtype == 'normal': # single message
            self.popup_msg_type = 'normal'
            self.popup_event_type = _('New Single Message')
        elif msg_obj.mtype == 'pm':
            self.popup_msg_type = 'pm'
            self.popup_event_type = _('New Private Message')
        else: # chat message
            self.popup_msg_type = 'chat'
            self.popup_event_type = _('New Message')

        num_unread = len(app.events.get_events(self.conn.name, self.jid,
            ['printed_' + self.popup_msg_type, self.popup_msg_type]))
        self.popup_title = i18n.ngettext(
            'New message from %(nickname)s',
            '%(n_msgs)i unread messages from %(nickname)s',
            num_unread) % {'nickname': nick, 'n_msgs': num_unread}

        if app.config.get('notify_on_new_message'):
            if self.first_unread or (app.config.get('autopopup_chat_opened') \
            and not self.control_focused):
                if app.config.get('autopopupaway'):
                    # always show notification
                    self.do_popup = True
                if app.connections[self.conn.name].connected in (2, 3):
                    # we're online or chat
                    self.do_popup = True

        if msg_obj.attention and not app.config.get(
        'ignore_incoming_attention'):
            self.popup_timeout = 0
            self.do_popup = True
        else:
            self.popup_timeout = app.config.get('notification_timeout')

        if msg_obj.attention and not app.config.get(
        'ignore_incoming_attention') and app.config.get_per('soundevents',
        'attention_received', 'enabled'):
            self.sound_event = 'attention_received'
            self.do_sound = True
        elif self.first_unread and helpers.allow_sound_notification(
        self.conn.name, 'first_message_received'):
            self.do_sound = True
        elif not self.first_unread and self.control_focused and \
        helpers.allow_sound_notification(self.conn.name,
        'next_message_received_focused'):
            self.do_sound = True
        elif not self.first_unread and not self.control_focused and \
        helpers.allow_sound_notification(self.conn.name,
        'next_message_received_unfocused'):
            self.do_sound = True

    def handle_incoming_gc_msg_event(self, msg_obj):
        if not msg_obj.msg_obj.gc_control:
            # we got a message from a room we're not in? ignore it
            return
        self.jid = msg_obj.jid
        sound = msg_obj.msg_obj.gc_control.highlighting_for_message(
            msg_obj.msgtxt, msg_obj.timestamp)[1]

        if msg_obj.nickname != msg_obj.msg_obj.gc_control.nick:
            self.do_sound = True
            if sound == 'received':
                self.sound_event = 'muc_message_received'
            elif sound == 'highlight':
                self.sound_event = 'muc_message_highlight'
            else:
                self.do_sound = False
        else:
            self.do_sound = False

        self.do_popup = False

    def handle_incoming_pres_event(self, pres_obj):
        if app.jid_is_transport(pres_obj.jid):
            return True
        account = pres_obj.conn.name
        self.jid = pres_obj.jid
        resource = pres_obj.resource or ''
        # It isn't an agent
        for c in pres_obj.contact_list:
            if c.resource == resource:
                # we look for other connected resources
                continue
            if c.show not in ('offline', 'error'):
                return True

        # no other resource is connected, let's look in metacontacts
        family = app.contacts.get_metacontacts_family(account, self.jid)
        for info in family:
            acct_ = info['account']
            jid_ = info['jid']
            c_ = app.contacts.get_contact_with_highest_priority(acct_, jid_)
            if not c_:
                continue
            if c_.jid == self.jid:
                continue
            if c_.show not in ('offline', 'error'):
                return True

        if pres_obj.old_show < 2 and pres_obj.new_show > 1:
            event = 'contact_connected'
            server = app.get_server_from_jid(self.jid)
            account_server = account + '/' + server
            block_transport = False
            if account_server in app.block_signed_in_notifications and \
            app.block_signed_in_notifications[account_server]:
                block_transport = True
            if helpers.allow_showing_notification(account, 'notify_on_signin') \
            and not app.block_signed_in_notifications[account] and \
            not block_transport:
                self.do_popup = True
            if app.config.get_per('soundevents', 'contact_connected',
            'enabled') and not app.block_signed_in_notifications[account] and\
            not block_transport and helpers.allow_sound_notification(account,
            'contact_connected'):
                self.sound_event = event
                self.do_sound = True

        elif pres_obj.old_show > 1 and pres_obj.new_show < 2:
            event = 'contact_disconnected'
            if helpers.allow_showing_notification(account, 'notify_on_signout'):
                self.do_popup = True
            if app.config.get_per('soundevents', 'contact_disconnected',
            'enabled') and helpers.allow_sound_notification(account, event):
                self.sound_event = event
                self.do_sound = True
        # Status change (not connected/disconnected or error (<1))
        elif pres_obj.new_show > 1:
            event = 'status_change'
        else:
            return True

        if app.jid_is_transport(self.jid):
            self.transport_name = app.get_transport_name_from_jid(self.jid)

        self.show = pres_obj.show

        self.popup_timeout = app.config.get('notification_timeout')

        nick = i18n.direction_mark + app.get_name_from_jid(account, self.jid)
        if event == 'status_change':
            self.popup_title = _('%(nick)s Changed Status') % \
                {'nick': nick}
            self.popup_text = _('%(nick)s is now %(status)s') % \
                {'nick': nick, 'status': helpers.get_uf_show(pres_obj.show)}
            if pres_obj.status:
                self.popup_text = self.popup_text + " : " + pres_obj.status
            self.popup_event_type = _('Contact Changed Status')
        elif event == 'contact_connected':
            self.popup_title = _('%(nickname)s Signed In') % {'nickname': nick}
            self.popup_text = ''
            if pres_obj.status:
                self.popup_text = pres_obj.status
            self.popup_event_type = _('Contact Signed In')
        elif event == 'contact_disconnected':
            self.popup_title = _('%(nickname)s Signed Out') % {'nickname': nick}
            self.popup_text = ''
            if pres_obj.status:
                self.popup_text = pres_obj.status
            self.popup_event_type = _('Contact Signed Out')

class MessageOutgoingEvent(nec.NetworkOutgoingEvent):
    name = 'message-outgoing'

    def init(self):
        self.additional_data = {}
        self.message = None
        self.keyID = None
        self.type_ = 'chat'
        self.kind = None
        self.timestamp = None
        self.subject = ''
        self.chatstate = None
        self.stanza_id = None
        self.resource = None
        self.user_nick = None
        self.xhtml = None
        self.label = None
        self.session = None
        self.form_node = None
        self.delayed = None
        self.callback = None
        self.callback_args = []
        self.now = False
        self.is_loggable = True
        self.control = None
        self.attention = False
        self.correct_id = None
        self.automatic_message = True
        self.encryption = ''
        self.encrypted = False

    def get_full_jid(self):
        if self.resource:
            return self.jid + '/' + self.resource
        if self.session:
            return self.session.get_to()
        return self.jid

    def generate(self):
        if self.type_ == 'chat':
            self.kind = KindConstant.CHAT_MSG_SENT
        else:
            self.kind = KindConstant.SINGLE_MSG_SENT
        return True

class StanzaMessageOutgoingEvent(nec.NetworkOutgoingEvent):
    name = 'stanza-message-outgoing'


class GcStanzaMessageOutgoingEvent(nec.NetworkOutgoingEvent):
    name = 'gc-stanza-message-outgoing'


class GcMessageOutgoingEvent(nec.NetworkOutgoingEvent):
    name = 'gc-message-outgoing'

    def init(self):
        self.additional_data = {}
        self.message = ''
        self.chatstate = None
        self.xhtml = None
        self.stanza_id = None
        self.label = None
        self.callback = None
        self.callback_args = []
        self.is_loggable = True
        self.control = None
        self.correct_id = None
        self.automatic_message = True

    def generate(self):
        return True


class ClientCertPassphraseEvent(nec.NetworkIncomingEvent):
    name = 'client-cert-passphrase'

class InformationEvent(nec.NetworkIncomingEvent):
    name = 'information'

    def init(self):
        self.args = None
        self.kwargs = {}
        self.dialog_name = None
        self.popup = True

    def generate(self):
        if self.args is None:
            self.args = ()
        else:
            self.args = (self.args,)
        return True


class StyleChanged(nec.NetworkIncomingEvent):
    name = 'style-changed'

    def generate(self):
        return True