# 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
from twisted.internet import defer
from twisted.internet import task
from twisted.trial import unittest

from buildbot.db import masters
from buildbot.test.fake import fakedb
from buildbot.test.fake import fakemaster
from buildbot.test.util import connector_component
from buildbot.test.util import interfaces
from buildbot.test.util import validation
from buildbot.util import epoch2datetime

SOMETIME = 1348971992
SOMETIME_DT = epoch2datetime(SOMETIME)
OTHERTIME = 1008971992
OTHERTIME_DT = epoch2datetime(OTHERTIME)


class Tests(interfaces.InterfaceTests):

    # common sample data

    master_row = [
        fakedb.Master(id=7, name="some:master",
                      active=1, last_active=SOMETIME),
    ]

    # tests

    def test_signature_findMasterId(self):
        @self.assertArgSpecMatches(self.db.masters.findMasterId)
        def findMasterId(self, name):
            pass

    def test_signature_setMasterState(self):
        @self.assertArgSpecMatches(self.db.masters.setMasterState)
        def setMasterState(self, masterid, active):
            pass

    def test_signature_getMaster(self):
        @self.assertArgSpecMatches(self.db.masters.getMaster)
        def getMaster(self, masterid):
            pass

    def test_signature_getMasters(self):
        @self.assertArgSpecMatches(self.db.masters.getMasters)
        def getMasters(self):
            pass

    @defer.inlineCallbacks
    def test_findMasterId_new(self):
        id = yield self.db.masters.findMasterId('some:master',
                                                _reactor=self.clock)
        masterdict = yield self.db.masters.getMaster(id)
        self.assertEqual(masterdict,
                         dict(id=id, name='some:master', active=False,
                              last_active=SOMETIME_DT))

    @defer.inlineCallbacks
    def test_findMasterId_exists(self):
        yield self.insertTestData([
            fakedb.Master(id=7, name='some:master'),
        ])
        id = yield self.db.masters.findMasterId('some:master')
        self.assertEqual(id, 7)

    @defer.inlineCallbacks
    def test_setMasterState_when_missing(self):
        activated = \
            yield self.db.masters.setMasterState(masterid=7, active=True)
        self.assertFalse(activated)

    @defer.inlineCallbacks
    def test_setMasterState_true_when_active(self):
        yield self.insertTestData([
            fakedb.Master(id=7, name='some:master',
                          active=1, last_active=OTHERTIME),
        ])
        activated = yield self.db.masters.setMasterState(
            masterid=7, active=True, _reactor=self.clock)
        self.assertFalse(activated)  # it was already active
        masterdict = yield self.db.masters.getMaster(7)
        self.assertEqual(masterdict,
                         dict(id=7, name='some:master', active=True,
                              last_active=SOMETIME_DT))  # timestamp updated

    @defer.inlineCallbacks
    def test_setMasterState_true_when_inactive(self):
        yield self.insertTestData([
            fakedb.Master(id=7, name='some:master',
                          active=0, last_active=OTHERTIME),
        ])
        activated = yield self.db.masters.setMasterState(
            masterid=7, active=True, _reactor=self.clock)
        self.assertTrue(activated)
        masterdict = yield self.db.masters.getMaster(7)
        self.assertEqual(masterdict,
                         dict(id=7, name='some:master', active=True,
                              last_active=SOMETIME_DT))

    @defer.inlineCallbacks
    def test_setMasterState_false_when_active(self):
        yield self.insertTestData([
            fakedb.Master(id=7, name='some:master',
                          active=1, last_active=OTHERTIME),
        ])
        deactivated = yield self.db.masters.setMasterState(
            masterid=7, active=False, _reactor=self.clock)
        self.assertTrue(deactivated)
        masterdict = yield self.db.masters.getMaster(7)
        self.assertEqual(masterdict,
                         dict(id=7, name='some:master', active=False,
                              last_active=OTHERTIME_DT))

    @defer.inlineCallbacks
    def test_setMasterState_false_when_inactive(self):
        yield self.insertTestData([
            fakedb.Master(id=7, name='some:master',
                          active=0, last_active=OTHERTIME),
        ])
        deactivated = yield self.db.masters.setMasterState(
            masterid=7, active=False, _reactor=self.clock)
        self.assertFalse(deactivated)
        masterdict = yield self.db.masters.getMaster(7)
        self.assertEqual(masterdict,
                         dict(id=7, name='some:master', active=False,
                              last_active=OTHERTIME_DT))

    @defer.inlineCallbacks
    def test_getMaster(self):
        yield self.insertTestData([
            fakedb.Master(id=7, name='some:master',
                          active=0, last_active=SOMETIME),
        ])
        masterdict = yield self.db.masters.getMaster(7)
        validation.verifyDbDict(self, 'masterdict', masterdict)
        self.assertEqual(masterdict, dict(id=7, name='some:master',
                                          active=False, last_active=SOMETIME_DT))

    @defer.inlineCallbacks
    def test_getMaster_missing(self):
        masterdict = yield self.db.masters.getMaster(7)
        self.assertEqual(masterdict, None)

    @defer.inlineCallbacks
    def test_getMasters(self):
        yield self.insertTestData([
            fakedb.Master(id=7, name='some:master',
                          active=0, last_active=SOMETIME),
            fakedb.Master(id=8, name='other:master',
                          active=1, last_active=OTHERTIME),
        ])
        masterlist = yield self.db.masters.getMasters()
        for masterdict in masterlist:
            validation.verifyDbDict(self, 'masterdict', masterdict)
        expected = sorted([
            dict(id=7, name='some:master',
                 active=0, last_active=SOMETIME_DT),
            dict(id=8, name='other:master',
                 active=1, last_active=OTHERTIME_DT),
        ])
        self.assertEqual(sorted(masterlist), expected)


class RealTests(Tests):

    # tests that only "real" implementations will pass

    @defer.inlineCallbacks
    def test_setMasterState_false_deletes_links(self):
        yield self.insertTestData([
            fakedb.Master(id=7, name='some:master',
                          active=1, last_active=OTHERTIME),
            fakedb.Scheduler(id=21),
            fakedb.SchedulerMaster(schedulerid=21, masterid=7),
        ])
        deactivated = yield self.db.masters.setMasterState(
            masterid=7, active=False, _reactor=self.clock)
        self.assertTrue(deactivated)

        # check that the scheduler_masters row was deleted
        def thd(conn):
            tbl = self.db.model.scheduler_masters
            self.assertEqual(conn.execute(tbl.select()).fetchall(), [])
        yield self.db.pool.do(thd)


class TestFakeDB(unittest.TestCase, Tests):

    def setUp(self):
        self.clock = task.Clock()
        self.clock.advance(SOMETIME)
        self.master = fakemaster.make_master(wantDb=True, testcase=self)
        self.db = self.master.db
        self.db.checkForeignKeys = True
        self.insertTestData = self.db.insertTestData


class TestRealDB(unittest.TestCase,
                 connector_component.ConnectorComponentMixin,
                 RealTests):

    def setUp(self):
        self.clock = task.Clock()
        self.clock.advance(SOMETIME)

        d = self.setUpConnectorComponent(
            table_names=['masters', 'schedulers', 'scheduler_masters'])

        @d.addCallback
        def finish_setup(_):
            self.db.masters = masters.MastersConnectorComponent(self.db)
        return d

    def tearDown(self):
        return self.tearDownConnectorComponent()
