#from mock import patch, Mock

from twisted.trial import unittest

from sqlalchemy import create_engine

from sets import Set

import io

import os

from iro import install

from iro import config

from iro.model.schema import Base, Offer

from iro.model.utils import WithSession

from iro.offer.provider import providers, Provider

from ..test_helpers.dbtestcase import md, SampleDatabase

from ..test_helpers.utils import DummyObserver

class TestInstallation(unittest.TestCase):

    '''test install script'''

    def setUp(self):

        md.setUp()

        if not hasattr(md,"db2"):

            md.db2=SampleDatabase("test2","test2",'%s/my.cnf'%md.tdir)

            md.dburl2='mysql://test2:test@localhost/test2?unix_socket=%s/socket'%md.tdir

            md.db2.create()

        self.log = DummyObserver()

        self.log.start()

        self.engine = None

    def tearDown(self):

        self.log.stop()

        if self.engine:

            Base.metadata.drop_all(self.engine)

            self.engine = None

        try:

            os.remove("iro.conf")

        except OSError as e:

            if e.errno != 2:

                raise

    def testCheckConfig(self):

        self.assertEqual(install.checkConfig(),False)

        with open("iro.conf",'w') as fp:

            fp.write("""[main]

dburl=foo""")

        self.assertEqual(install.checkConfig(),False)

        self.assertEqual(len(self.log.e),1)

        self.assertEqual(self.log.e[0]['message'], ("Error while processing config file: Option 'port' in section 'main' is missing.",))

        with open("iro.conf",'w') as fp:

            fp.write("""[main]

dburl=foo

port=123456

""")

        self.assertEqual(install.checkConfig(),True)

    def testCheckDatabase(self):

        config.main.dburl=md.dburl2

        self.assertTrue(install.checkDatabaseConnection())

        self.assertFalse(install.checkDatabase())

        self.engine = create_engine(md.dburl2)

        Base.metadata.create_all(self.engine)

        self.assertTrue(install.checkDatabase())

    def testCheckDatabaseConnection(self):

        config.main.dburl="mysql://t@localhost/test"

        self.assertFalse(install.checkDatabaseConnection())

        self.assertEqual(len(self.log.e),1)

        self.assertTrue(self.log.e[0]['message'][0].startswith("Error while trying to connect to database\n"))

        config.main.dburl="sqlite://"

        self.assertTrue(install.checkDatabaseConnection())

    def testCreateDatabase(self):

        config.main.dburl=md.dburl2

        self.assertTrue(install.checkDatabaseConnection())

        self.assertFalse(install.checkDatabase())

        install.createDatabase()

        self.assertTrue(install.checkDatabase())

    def testCreateSampleConfig(self):

        install.createSampleConfig()

        with open("iro.conf",'r') as fp:

            c = fp.read()

        with open(os.path.abspath("../iro.conf.inst"),"r") as fp:

            self.assertEqual(c,fp.read())

    def testNoOverwrite(self):

        with open("iro.conf","w") as fp:

            fp.write("muhaha")

        install.createSampleConfig()

        with open("iro.conf",'r') as fp:

            self.assertEqual(fp.read(),"muhaha")

        self.assertEqual(len(self.log.e),1)

        self.assertEqual(self.log.e[0]['message'], ("iro.conf exists and will not be overwritten.",))

    def testGetAllRoutesNone(self):

        config.main.dburl=md.dburl2

        install.createDatabase()

        self.assertEqual(install.getAllRoutes([]),{"orphand":Set(),"added":Set()})

    def testGetAllRoutesOrphand(self):

        config.main.dburl=md.dburl2

        install.createDatabase()

        self.engine = create_engine(md.dburl2)

        with WithSession(self.engine,True) as session:

            session.add(Offer(provider="p",route="r",typ="t",name="test"))

            session.add(Offer(provider="p",route="r2",typ="t",name="test2"))

        self.assertEqual(install.getAllRoutes([]),{"orphand":Set(["test","test2"]),"added":Set()})

    def testGetAllRoutesAdded(self):

        config.main.dburl=md.dburl2

        install.createDatabase()

        self.engine = create_engine(md.dburl2)

        class TestProvider(Provider):

            def __init__(self, name):       

                Provider.__init__(self, name, {"r":["1","2","3"]})

        providers["test"]=TestProvider

        sample_config = """[p]

typ= test

test= foo

"""

        config.configParser.readfp(io.BytesIO(sample_config))

        self.assertEqual(install.getAllRoutes(["p"]),{"orphand":Set(),"added":Set(["p_r_1","p_r_2","p_r_3"])}) 

        #test writing

        self.assertEqual(install.getAllRoutes(["p"],True),{"orphand":Set(),"added":Set(["p_r_1","p_r_2","p_r_3"])})

        with WithSession(self.engine,True) as session:

            o = Set([i[0] for i in session.query(Offer.name).all()])

            self.assertEqual(o,Set(["p_r_1","p_r_2","p_r_3"]))

        #nothing to do anymore

        self.assertEqual(install.getAllRoutes(["p"]),{"orphand":Set(),"added":Set()}) 

    def testGetAllRoutesOaA(self):

        config.main.dburl=md.dburl2

        install.createDatabase()

        self.engine = create_engine(md.dburl2)

        class TestProvider(Provider):

            def __init__(self, name):       

                Provider.__init__(self, name, {"r":["1","2","3"]})

        providers["test"]=TestProvider

        sample_config = """[p]

typ= test

test= foo

"""

        config.configParser.readfp(io.BytesIO(sample_config))

        with WithSession(self.engine,True) as session:

            session.add(Offer(provider="q",route="r",typ="t",name="test"))

            session.add(Offer(provider="q",route="r2",typ="t",name="test2"))

            session.add(Offer(provider="p",route="1",typ="r",name="foo"))

        self.assertEqual(install.getAllRoutes(["p"]),{"orphand":Set(["test","test2"]),"added":Set(["p_r_2","p_r_3"])}) 

        #test writing

        self.assertEqual(install.getAllRoutes(["p"],True),{"orphand":Set(["test","test2"]),"added":Set(["p_r_2","p_r_3"])})

        with WithSession(self.engine,True) as session:

            o = Set([i[0] for i in session.query(Offer.name).all()])

            self.assertEqual(o,Set(["test","test2","foo","p_r_2","p_r_3"]))

        self.assertEqual(install.getAllRoutes(["p"]),{"orphand":Set(["test","test2"]),"added":Set()})