# This file is part of Buildbot.  Buildbot 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 2.
#
# 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 General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc., 51
# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Copyright Buildbot Team Members

# Test clean shutdown functionality of the master
import mock

from buildbot import pbmanager
from twisted.cred import credentials
from twisted.internet import defer
from twisted.spread import pb
from twisted.trial import unittest


class TestPBManager(unittest.TestCase):

    def setUp(self):
        self.pbm = pbmanager.PBManager()
        self.pbm.startService()
        self.connections = []

    def tearDown(self):
        return self.pbm.stopService()

    def perspectiveFactory(self, mind, username):
        persp = mock.Mock()
        persp.is_my_persp = True
        persp.attached = lambda mind: defer.succeed(None)
        self.connections.append(username)
        return defer.succeed(persp)

    def test_repr(self):
        reg = self.pbm.register('tcp:0:interface=127.0.0.1', "x", "y", self.perspectiveFactory)
        self.assertEqual(repr(self.pbm.dispatchers['tcp:0:interface=127.0.0.1']),
                         '<pbmanager.Dispatcher for x on tcp:0:interface=127.0.0.1>')
        self.assertEqual(repr(reg), '<pbmanager.Registration for x on tcp:0:interface=127.0.0.1>')

    def test_register_unregister(self):
        portstr = "tcp:0:interface=127.0.0.1"
        reg = self.pbm.register(portstr, "boris", "pass", self.perspectiveFactory)

        # make sure things look right
        self.assertIn(portstr, self.pbm.dispatchers)
        disp = self.pbm.dispatchers[portstr]
        self.assertIn('boris', disp.users)

        # we can't actually connect to it, as that requires finding the
        # dynamically allocated port number which is buried out of reach;
        # however, we can try the requestAvatar and requestAvatarId methods.

        d = disp.requestAvatarId(credentials.UsernamePassword('boris', 'pass'))

        def check_avatarid(username):
            self.assertEqual(username, 'boris')
        d.addCallback(check_avatarid)
        d.addCallback(lambda _:
                      disp.requestAvatar('boris', mock.Mock(), pb.IPerspective))

        def check_avatar(xxx_todo_changeme):
            (iface, persp, detach_fn) = xxx_todo_changeme
            self.failUnless(persp.is_my_persp)
            self.assertIn('boris', self.connections)
        d.addCallback(check_avatar)

        d.addCallback(lambda _: reg.unregister())
        return d

    def test_double_register_unregister(self):
        portstr = "tcp:0:interface=127.0.0.1"
        reg1 = self.pbm.register(portstr, "boris", "pass", None)
        reg2 = self.pbm.register(portstr, "ivona", "pass", None)

        # make sure things look right
        self.assertEqual(len(self.pbm.dispatchers), 1)
        self.assertIn(portstr, self.pbm.dispatchers)
        disp = self.pbm.dispatchers[portstr]
        self.assertIn('boris', disp.users)
        self.assertIn('ivona', disp.users)

        d = reg1.unregister()

        def check_boris_gone(_):
            self.assertEqual(len(self.pbm.dispatchers), 1)
            self.assertIn(portstr, self.pbm.dispatchers)
            disp = self.pbm.dispatchers[portstr]
            self.assertNotIn('boris', disp.users)
            self.assertIn('ivona', disp.users)
        d.addCallback(check_boris_gone)
        d.addCallback(lambda _: reg2.unregister())

        def check_dispatcher_gone(_):
            self.assertEqual(len(self.pbm.dispatchers), 0)
        d.addCallback(check_dispatcher_gone)
        return d
