# -*- coding: utf-8 -*-

# copyright 2013-2016 LOGILAB S.A. (Paris, FRANCE), all rights reserved.

# contact http://www.logilab.fr -- mailto:contact@logilab.fr

#

# This program is free software: you can redistribute it and/or modify it under

# the terms of the GNU Lesser General Public License as published by the Free

# Software Foundation, either version 2.1 of the License, or (at your option)

# any later version.

#

# 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 Lesser General Public License for more

# details.

#

# You should have received a copy of the GNU Lesser General Public License along

# with this program. If not, see <http://www.gnu.org/licenses/>.

"""Massive store test case"""

import itertools

from cubicweb.devtools import testlib, PostgresApptestConfiguration

from cubicweb.devtools import startpgcluster, stoppgcluster

from cubicweb.dataimport import ucsvreader, stores

from cubicweb.server.schema2sql import build_index_name

from cubicweb.dataimport.massive_store import MassiveObjectStore, PGHelper

import test_stores

def setUpModule():

    startpgcluster(__file__)

def tearDownModule(*args):

    stoppgcluster(__file__)

def all_indexes(cnx):

    crs = cnx.system_sql('SELECT indexname FROM pg_indexes')

    return set(r[0] for r in crs.fetchall())

class MassiveObjectStoreWithCustomMDGenStoreTC(

        test_stores.NoHookRQLObjectStoreWithCustomMDGenStoreTC):

    configcls = PostgresApptestConfiguration

    def store_impl(self, cnx):

        source = cnx.create_entity('CWSource', type=u'datafeed', name=u'test', url=u'test')

        cnx.commit()

        metagen = stores.MetadataGenerator(cnx, source=cnx.repo.sources_by_eid[source.eid])

        return MassiveObjectStore(cnx, metagen=metagen)

class MassImportSimpleTC(testlib.CubicWebTC):

    configcls = PostgresApptestConfiguration

    appid = 'data-massimport'

    def cast(self, _type, value):

        try:

            return _type(value)

        except ValueError:

            return None

    def push_geonames_data(self, dumpname, store):

        # Push timezones

        cnx = store._cnx

        for code, gmt, dst, raw_offset in ucsvreader(open(self.datapath('timeZones.txt'), 'rb'),

                                                     delimiter='\t'):

            cnx.create_entity('TimeZone', code=code, gmt=float(gmt),

                              dst=float(dst), raw_offset=float(raw_offset))

        timezone_code = dict(cnx.execute('Any C, X WHERE X is TimeZone, X code C'))

        # Push data

        for ind, infos in enumerate(ucsvreader(open(dumpname, 'rb'),

                                               delimiter='\t',

                                               ignore_errors=True)):

            latitude = self.cast(float, infos[4])

            longitude = self.cast(float, infos[5])

            population = self.cast(int, infos[14])

            elevation = self.cast(int, infos[15])

            gtopo = self.cast(int, infos[16])

            feature_class = infos[6]

            if len(infos[6]) != 1:

                feature_class = None

            entity = {'name': infos[1],

                      'asciiname': infos[2],

                      'alternatenames': infos[3],

                      'latitude': latitude, 'longitude': longitude,

                      'feature_class': feature_class,

                      'alternate_country_code': infos[9],

                      'admin_code_3': infos[12],

                      'admin_code_4': infos[13],

                      'population': population, 'elevation': elevation,

                      'gtopo30': gtopo, 'timezone': timezone_code.get(infos[17]),

                      'cwuri': u'http://sws.geonames.org/%s/' % int(infos[0]),

                      'geonameid': int(infos[0]),

                      }

            store.prepare_insert_entity('Location', **entity)

    def test_autoflush_metadata(self):

        with self.admin_access.repo_cnx() as cnx:

            crs = cnx.system_sql('SELECT * FROM entities WHERE type=%(t)s',

                                 {'t': 'Location'})

            self.assertEqual(len(crs.fetchall()), 0)

            store = MassiveObjectStore(cnx)

            store.prepare_insert_entity('Location', name=u'toto')

            store.flush()

            store.commit()

            store.finish()

            cnx.commit()

        with self.admin_access.repo_cnx() as cnx:

            crs = cnx.system_sql('SELECT * FROM entities WHERE type=%(t)s',

                                 {'t': 'Location'})

            self.assertEqual(len(crs.fetchall()), 1)

    def test_massimport_etype_metadata(self):

        with self.admin_access.repo_cnx() as cnx:

            store = MassiveObjectStore(cnx)

            timezone_eid = store.prepare_insert_entity('TimeZone')

            store.prepare_insert_entity('Location', timezone=timezone_eid)

            store.flush()

            store.commit()

            store.finish()

            eid, etname = cnx.execute('Any X, TN WHERE X timezone TZ, X is T, '

                                      'T name TN')[0]

            self.assertEqual(cnx.entity_from_eid(eid).cw_etype, etname)

    def test_index_not_dropped_by_init(self):

        with self.admin_access.repo_cnx() as cnx:

            store = MassiveObjectStore(cnx)  # noqa

            cnx.commit()

            indexes = all_indexes(cnx)

            self.assertIn('entities_pkey', indexes)

            self.assertIn(build_index_name('owned_by_relation', ['eid_from', 'eid_to'], 'key_'),

                          indexes)

            self.assertIn(build_index_name('owned_by_relation', ['eid_from'], 'idx_'),

                          indexes)

    def test_drop_index_recreation(self):

        with self.admin_access.repo_cnx() as cnx:

            store = MassiveObjectStore(cnx)

            store._drop_metadata_constraints()

            indexes = all_indexes(cnx)

            self.assertIn('entities_pkey', indexes)

            self.assertNotIn(build_index_name('owned_by_relation', ['eid_from', 'eid_to'], 'key_'),

                             indexes)

            self.assertNotIn(build_index_name('owned_by_relation', ['eid_from'], 'idx_'),

                             indexes)

            store.finish()

            indexes = all_indexes(cnx)

            self.assertIn('entities_pkey', indexes)

            self.assertIn(build_index_name('owned_by_relation', ['eid_from', 'eid_to'], 'key_'),

                          indexes)

            self.assertIn(build_index_name('owned_by_relation', ['eid_from'], 'idx_'),

                          indexes)

    def test_consider_metagen(self):

        """Ensure index on owned_by is not deleted if we don't consider this metadata."""

        with self.admin_access.repo_cnx() as cnx:

            metagen = stores.MetadataGenerator(cnx, meta_skipped=('owned_by',))

            store = MassiveObjectStore(cnx, metagen=metagen)

            store._drop_metadata_constraints()

            indexes = all_indexes(cnx)

            self.assertIn(build_index_name('owned_by_relation', ['eid_from', 'eid_to'], 'key_'),

                          indexes)

            self.assertIn(build_index_name('owned_by_relation', ['eid_from'], 'idx_'),

                          indexes)

    def test_eids_seq_range(self):

        with self.admin_access.repo_cnx() as cnx:

            store = MassiveObjectStore(cnx, eids_seq_range=1000)

            store.restart_eid_sequence(50000)

            store.prepare_insert_entity('Location', name=u'toto')

            store.flush()

            cnx.commit()

        with self.admin_access.repo_cnx() as cnx:

            crs = cnx.system_sql("SELECT * FROM entities_id_seq")

            self.assertGreater(crs.fetchone()[0], 50000)

    def test_eid_entity(self):

        with self.admin_access.repo_cnx() as cnx:

            store = MassiveObjectStore(cnx, eids_seq_range=1000)

            store.restart_eid_sequence(50000)

            eid = store.prepare_insert_entity('Location', name=u'toto')

            store.flush()

            self.assertGreater(eid, 50000)

    def test_eid_entity_2(self):

        with self.admin_access.repo_cnx() as cnx:

            store = MassiveObjectStore(cnx)

            store.restart_eid_sequence(50000)

            eid = store.prepare_insert_entity('Location', name=u'toto', eid=10000)

            store.flush()

        self.assertEqual(eid, 10000)

    @staticmethod

    def get_db_descr(cnx):

        pgh = PGHelper(cnx)

        all_tables = cnx.system_sql('''

SELECT table_name

FROM information_schema.tables

where table_schema = %(s)s''', {'s': pgh.pg_schema}).fetchall()

        all_tables_descr = {}

        for tablename, in all_tables:

            all_tables_descr[tablename] = set(pgh.table_indexes(tablename)).union(

                set(pgh.table_constraints(tablename)))

        return all_tables_descr

    def test_identical_schema(self):

        with self.admin_access.repo_cnx() as cnx:

            init_descr = self.get_db_descr(cnx)

        with self.admin_access.repo_cnx() as cnx:

            store = MassiveObjectStore(cnx)

            store.prepare_insert_entity('Location', name=u'toto')

            store.finish()

        with self.admin_access.repo_cnx() as cnx:

            final_descr = self.get_db_descr(cnx)

        self.assertEqual(init_descr, final_descr)

    def test_simple_insert(self):

        with self.admin_access.repo_cnx() as cnx:

            store = MassiveObjectStore(cnx)

            self.push_geonames_data(self.datapath('geonames.csv'), store)

            store.flush()

            store.commit()

            store.finish()

        with self.admin_access.repo_cnx() as cnx:

            rset = cnx.execute('Any X WHERE X is Location')

            self.assertEqual(len(rset), 4000)

            rset = cnx.execute('Any X WHERE X is Location, X timezone T')

            self.assertEqual(len(rset), 4000)

    def test_index_building(self):

        with self.admin_access.repo_cnx() as cnx:

            store = MassiveObjectStore(cnx)

            self.push_geonames_data(self.datapath('geonames.csv'), store)

            store.flush()

            # Check index

            indexes = all_indexes(cnx)

            self.assertIn('entities_pkey', indexes)

            self.assertIn(build_index_name('owned_by_relation', ['eid_from', 'eid_to'], 'key_'),

                          indexes)

            self.assertIn(build_index_name('owned_by_relation', ['eid_from'], 'idx_'),

                          indexes)

            # Cleanup -> index

            store.finish()

            # Check index again

            indexes = all_indexes(cnx)

            self.assertIn('entities_pkey', indexes)

            self.assertIn(build_index_name('owned_by_relation', ['eid_from', 'eid_to'], 'key_'),

                          indexes)

            self.assertIn(build_index_name('owned_by_relation', ['eid_from'], 'idx_'),

                          indexes)

    def test_multiple_insert(self):

        with self.admin_access.repo_cnx() as cnx:

            store = MassiveObjectStore(cnx)

            store.prepare_insert_entity('Location', name=u'toto')

            store.finish()

            store = MassiveObjectStore(cnx)

            store.prepare_insert_entity('Location', name=u'toto')

            store.finish()

if __name__ == '__main__':

    import unittest

    unittest.main()