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"""Test ObjectStore backend bits.

For these tests to run, a couch server has to be running on (default) port
5984.
"""

import copy
from leap.soledad.backends import couch
from leap.soledad.tests import u1db_tests as tests
from leap.soledad.tests.u1db_tests import test_backends
from leap.soledad.tests.u1db_tests import test_sync
try:
    import simplejson as json
except ImportError:
    import json  # noqa

#-----------------------------------------------------------------------------
# The following tests come from `u1db.tests.test_common_backend`.
#-----------------------------------------------------------------------------

class TestCouchBackendImpl(tests.TestCase):

    def test__allocate_doc_id(self):
        db = couch.CouchDatabase('http://localhost:5984', 'u1db_tests')
        doc_id1 = db._allocate_doc_id()
        self.assertTrue(doc_id1.startswith('D-'))
        self.assertEqual(34, len(doc_id1))
        int(doc_id1[len('D-'):], 16)
        self.assertNotEqual(doc_id1, db._allocate_doc_id())


#-----------------------------------------------------------------------------
# The following tests come from `u1db.tests.test_backends`.
#-----------------------------------------------------------------------------

def make_couch_database_for_test(test, replica_uid):
    return couch.CouchDatabase('http://localhost:5984', replica_uid,
                               replica_uid=replica_uid or 'test')

def copy_couch_database_for_test(test, db):
    new_db = couch.CouchDatabase('http://localhost:5984',  db._replica_uid+'_copy',
                                 replica_uid=db._replica_uid or 'test')
    gen, docs = db.get_all_docs(include_deleted=True)
    for doc in docs:
        new_db._put_doc(doc)
    new_db._transaction_log._data = copy.deepcopy(db._transaction_log._data)
    new_db._sync_log._data = copy.deepcopy(db._sync_log._data)
    new_db._conflict_log._data = copy.deepcopy(db._conflict_log._data)
    new_db._set_u1db_data()
    return new_db


COUCH_SCENARIOS = [
        ('couch', {'make_database_for_test': make_couch_database_for_test,
                  'copy_database_for_test': copy_couch_database_for_test,
                  'make_document_for_test': tests.make_document_for_test,}),
        ]


class CouchTests(test_backends.AllDatabaseTests):

    scenarios = COUCH_SCENARIOS

    def tearDown(self):
        self.db.delete_database()
        super(CouchTests, self).tearDown()


class CouchDatabaseTests(test_backends.LocalDatabaseTests):

    scenarios = COUCH_SCENARIOS

    def tearDown(self):
        self.db.delete_database()
        super(CouchDatabaseTests, self).tearDown()


class CouchValidateGenNTransIdTests(test_backends.LocalDatabaseValidateGenNTransIdTests):

    scenarios = COUCH_SCENARIOS

    def tearDown(self):
        self.db.delete_database()
        super(CouchValidateGenNTransIdTests, self).tearDown()


class CouchValidateSourceGenTests(test_backends.LocalDatabaseValidateSourceGenTests):

    scenarios = COUCH_SCENARIOS

    def tearDown(self):
        self.db.delete_database()
        super(CouchValidateSourceGenTests, self).tearDown()


class CouchWithConflictsTests(test_backends.LocalDatabaseWithConflictsTests):

    scenarios = COUCH_SCENARIOS

    def tearDown(self):
        self.db.delete_database()
        super(CouchWithConflictsTests, self).tearDown()


# Notice: the CouchDB backend is currently used for storing encrypted data in
# the server, so indexing makes no sense. Thus, we ignore index testing for
# now.

#class CouchIndexTests(DatabaseIndexTests):
#
#    scenarios = COUCH_SCENARIOS
#
#    def tearDown(self):
#        self.db.delete_database()
#        super(CouchIndexTests, self).tearDown()



#-----------------------------------------------------------------------------
# The following tests come from `u1db.tests.test_sync`.
#-----------------------------------------------------------------------------

target_scenarios = [
    ('local', {'create_db_and_target': test_sync._make_local_db_and_target}), ]


simple_doc = tests.simple_doc
nested_doc = tests.nested_doc


class CouchDatabaseSyncTargetTests(test_sync.DatabaseSyncTargetTests):

    scenarios = (tests.multiply_scenarios(COUCH_SCENARIOS, target_scenarios))

    def tearDown(self):
        self.db.delete_database()
        super(CouchDatabaseSyncTargetTests, self).tearDown()

    def test_sync_exchange_returns_many_new_docs(self):
        # This test was replicated to allow dictionaries to be compared after
        # JSON expansion (because one dictionary may have many different
        # serialized representations).
        doc = self.db.create_doc_from_json(simple_doc)
        doc2 = self.db.create_doc_from_json(nested_doc)
        self.assertTransactionLog([doc.doc_id, doc2.doc_id], self.db)
        new_gen, _ = self.st.sync_exchange(
            [], 'other-replica', last_known_generation=0,
            last_known_trans_id=None, return_doc_cb=self.receive_doc)
        self.assertTransactionLog([doc.doc_id, doc2.doc_id], self.db)
        self.assertEqual(2, new_gen)
        self.assertEqual(
            [(doc.doc_id, doc.rev, json.loads(simple_doc), 1),
             (doc2.doc_id, doc2.rev, json.loads(nested_doc), 2)],
            [c[:-3] + (json.loads(c[-3]), c[-2]) for c in self.other_changes])
        if self.whitebox:
            self.assertEqual(
                self.db._last_exchange_log['return'],
                {'last_gen': 2, 'docs':
                 [(doc.doc_id, doc.rev), (doc2.doc_id, doc2.rev)]})


sync_scenarios = []
for name, scenario in COUCH_SCENARIOS:
    scenario = dict(scenario)
    scenario['do_sync'] = test_sync.sync_via_synchronizer
    sync_scenarios.append((name, scenario))
    scenario = dict(scenario)

class CouchDatabaseSyncTests(test_sync.DatabaseSyncTests):

    scenarios = sync_scenarios

    def setUp(self):
        self.db  = None
        self.db1 = None
        self.db2 = None
        self.db3 = None
        super(CouchDatabaseSyncTests, self).setUp()

    def tearDown(self):
        self.db and self.db.delete_database()
        self.db1 and self.db1.delete_database()
        self.db2 and self.db2.delete_database()
        self.db3 and self.db3.delete_database()
        db = self.create_database('test1_copy', 'source')
        db.delete_database()
        db = self.create_database('test2_copy', 'target')
        db.delete_database()
        db = self.create_database('test3', 'target')
        db.delete_database()
        super(CouchDatabaseSyncTests, self).tearDown()

    # The following tests use indexing, so we eliminate them for now because
    # indexing is still not implemented in couch backend.

    def test_sync_pulls_changes(self):
        pass

    def test_sync_sees_remote_conflicted(self):
        pass

    def test_sync_sees_remote_delete_conflicted(self):
        pass

    def test_sync_local_race_conflicted(self):
        pass

    def test_sync_propagates_deletes(self):
        pass



load_tests = tests.load_with_scenarios