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import os

from gremlin_python import statics
from gremlin_python.driver.protocol import GremlinServerError
from gremlin_python.statics import long
from gremlin_python.process.traversal import Traverser
from gremlin_python.process.traversal import TraversalStrategy
from gremlin_python.process.traversal import Bindings
from gremlin_python.process.traversal import P, Order, T
from gremlin_python.process.graph_traversal import __
from gremlin_python.process.anonymous_traversal import traversal
from gremlin_python.structure.graph import Vertex
from gremlin_python.process.strategies import SubgraphStrategy, ReservedKeysVerificationStrategy, SeedStrategy
from gremlin_python.structure.io.util import HashableDict
from gremlin_python.driver.serializer import GraphSONSerializersV2d0

__author__ = 'Marko A. Rodriguez (http://markorodriguez.com)'

gremlin_server_url = os.environ.get('GREMLIN_SERVER_URL', 'ws://localhost:{}/gremlin')
test_no_auth_url = gremlin_server_url.format(45940)

class TestDriverRemoteConnection(object):
    def test_traversals(self, remote_connection):
        statics.load_statics(globals())
        g = traversal().withRemote(remote_connection)

        assert long(6) == g.V().count().toList()[0]
        # #
        assert Vertex(1) == g.V(1).next()
        assert 1 == g.V(1).id().next()
        assert Traverser(Vertex(1)) == g.V(1).nextTraverser()
        assert 1 == len(g.V(1).toList())
        assert isinstance(g.V(1).toList(), list)
        results = g.V().repeat(__.out()).times(2).name
        results = results.toList()
        assert 2 == len(results)
        assert "lop" in results
        assert "ripple" in results
        # #
        assert 10 == g.V().repeat(__.both()).times(5)[0:10].count().next()
        assert 1 == g.V().repeat(__.both()).times(5)[0:1].count().next()
        assert 0 == g.V().repeat(__.both()).times(5)[0:0].count().next()
        assert 4 == g.V()[2:].count().next()
        assert 2 == g.V()[:2].count().next()
        # #
        results = g.withSideEffect('a', ['josh', 'peter']).V(1).out('created').in_('created').values('name').where(P.within('a')).toList()
        assert 2 == len(results)
        assert 'josh' in results
        assert 'peter' in results
        # #
        results = g.V().out().profile().toList()
        assert 1 == len(results)
        assert 'metrics' in results[0]
        assert 'dur' in results[0]
        # #
        results = g.V().has('name', 'peter').as_('a').out('created').as_('b').select('a', 'b').by(
            __.valueMap()).toList()
        assert 1 == len(results)
        assert 'peter' == results[0]['a']['name'][0]
        assert 35 == results[0]['a']['age'][0]
        assert 'lop' == results[0]['b']['name'][0]
        assert 'java' == results[0]['b']['lang'][0]
        assert 2 == len(results[0]['a'])
        assert 2 == len(results[0]['b'])
        # #
        results = g.V(1).inject(g.V(2).next()).values('name').toList()
        assert 2 == len(results)
        assert 'marko' in results
        assert 'vadas' in results
        # #
        results = g.V().has('person', 'name', 'marko').map(lambda: ("it.get().value('name')", "gremlin-groovy")).toList()
        assert 1 == len(results)
        assert 'marko' in results
        # #
        # this test just validates that the underscored versions of steps conflicting with Gremlin work
        # properly and can be removed when the old steps are removed - TINKERPOP-2272
        results = g.V().filter_(__.values('age').sum_().and_(
            __.max_().is_(P.gt(0)), __.min_().is_(P.gt(0)))).range_(0, 1).id_().next()
        assert 1 == results
        # #
        # test binding in P
        results = g.V().has('person', 'age', Bindings.of('x', P.lt(30))).count().next()
        assert 2 == results
        # #
        # test dict keys which can only work on GraphBinary and GraphSON3 which include specific serialization
        # types for dict
        if not isinstance(remote_connection._client._message_serializer, GraphSONSerializersV2d0):
            results = g.V().has('person', 'name', 'marko').elementMap("name").groupCount().next()
            assert {HashableDict.of({T.id: 1, T.label: 'person', 'name': 'marko'}): 1} == results
        if not isinstance(remote_connection._client._message_serializer, GraphSONSerializersV2d0):
            results = g.V().has('person', 'name', 'marko').both('knows').groupCount().by(__.values('name').fold()).next()
            assert {tuple(['vadas']): 1, tuple(['josh']): 1} == results

    def test_lambda_traversals(self, remote_connection):
        statics.load_statics(globals())
        assert "remoteconnection[{},gmodern]".format(test_no_auth_url) == str(remote_connection)
        g = traversal().withRemote(remote_connection)

        assert 24.0 == g.withSack(1.0, lambda: ("x -> x + 1", "gremlin-groovy")).V().both().sack().sum().next()
        assert 24.0 == g.withSack(lambda: ("{1.0d}", "gremlin-groovy"), lambda: ("x -> x + 1", "gremlin-groovy")).V().both().sack().sum().next()

        assert 48.0 == g.withSack(1.0, lambda: ("x, y ->  x + y + 1", "gremlin-groovy")).V().both().sack().sum().next()
        assert 48.0 == g.withSack(lambda: ("{1.0d}", "gremlin-groovy"), lambda: ("x, y ->  x + y + 1", "gremlin-groovy")).V().both().sack().sum().next()

    def test_iteration(self, remote_connection):
        statics.load_statics(globals())
        g = traversal().withRemote(remote_connection)

        t = g.V().count()
        assert t.hasNext()
        assert t.hasNext()
        assert t.hasNext()
        assert t.hasNext()
        assert t.hasNext()
        assert 6 == t.next()
        assert not(t.hasNext())
        assert not(t.hasNext())
        assert not(t.hasNext())
        assert not(t.hasNext())
        assert not(t.hasNext())

        t = g.V().has('name', P.within('marko', 'peter')).values('name').order()
        assert "marko" == t.next()
        assert t.hasNext()
        assert t.hasNext()
        assert t.hasNext()
        assert t.hasNext()
        assert t.hasNext()
        assert "peter" == t.next()
        assert not(t.hasNext())
        assert not(t.hasNext())
        assert not(t.hasNext())
        assert not(t.hasNext())
        assert not(t.hasNext())

        try:
            t.next()
            assert False
        except StopIteration:
            assert True

    def test_strategies(self, remote_connection):
        statics.load_statics(globals())
        g = traversal().withRemote(remote_connection). \
            withStrategies(TraversalStrategy("SubgraphStrategy",
                                             {"vertices": __.hasLabel("person"),
                                              "edges": __.hasLabel("created")},
                                              "org.apache.tinkerpop.gremlin.process.traversal.strategy.decoration.SubgraphStrategy"))
        assert 4 == g.V().count().next()
        assert 0 == g.E().count().next()
        assert 1 == g.V().label().dedup().count().next()
        assert 4 == g.V().filter(lambda: ("x -> true", "gremlin-groovy")).count().next()
        assert "person" == g.V().label().dedup().next()
        #
        g = traversal().withRemote(remote_connection). \
            withStrategies(SubgraphStrategy(vertices=__.hasLabel("person"), edges=__.hasLabel("created")))
        assert 4 == g.V().count().next()
        assert 0 == g.E().count().next()
        assert 1 == g.V().label().dedup().count().next()
        assert "person" == g.V().label().dedup().next()
        #
        g = traversal().withRemote(remote_connection). \
            withStrategies(SubgraphStrategy(edges=__.hasLabel("created")))
        assert 6 == g.V().count().next()
        assert 4 == g.E().count().next()
        assert 1 == g.E().label().dedup().count().next()
        assert "created" == g.E().label().dedup().next()
        #
        g = g.withoutStrategies(SubgraphStrategy). \
            withComputer(vertices=__.has("name", "marko"), edges=__.limit(0))
        assert 1 == g.V().count().next()
        assert 0 == g.E().count().next()
        assert "person" == g.V().label().next()
        assert "marko" == g.V().name.next()
        #
        g = traversal().withRemote(remote_connection).withComputer()
        assert 6 == g.V().count().next()
        assert 6 == g.E().count().next()
        #
        g = traversal().withRemote(remote_connection).withStrategies(SeedStrategy(12345))
        shuffledResult = g.V().values("name").order().by(Order.shuffle).toList()
        assert shuffledResult == g.V().values("name").order().by(Order.shuffle).toList()
        assert shuffledResult == g.V().values("name").order().by(Order.shuffle).toList()
        assert shuffledResult == g.V().values("name").order().by(Order.shuffle).toList()
        #
        g = traversal().withRemote(remote_connection). \
            withStrategies(ReservedKeysVerificationStrategy(throw_exception=True))
        try:
            g.addV("person").property("id", "please-don't-use-id").iterate()
            assert False
        except GremlinServerError as gse:
            assert gse.status_code == 500
        #
        g = traversal().withRemote(remote_connection).with_("x", True).with_('evaluationTimeout', 10)
        try:
            g.inject(1).sideEffect(lambda: ("Thread.sleep(1000)", "gremlin-groovy")).iterate()
            assert False
        except GremlinServerError as gse:
            assert gse.status_code == 598

    def test_clone(self, remote_connection):
        g = traversal().withRemote(remote_connection)
        t = g.V().both()
        assert 12 == len(t.toList())
        assert 5 == t.clone().limit(5).count().next()
        assert 10 == t.clone().limit(10).count().next()

    def test_authenticated(self, remote_connection_authenticated):
        statics.load_statics(globals())
        g = traversal().withRemote(remote_connection_authenticated)

        assert long(6) == g.V().count().toList()[0]
