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

import datetime as DT

from StringIO import StringIO

from logilab.common.testlib import TestCase, unittest_main

from cubicweb import dataimport

from cubicweb.devtools.testlib import CubicWebTC

class RQLObjectStoreTC(CubicWebTC):

    def test_all(self):

        with self.admin_access.repo_cnx() as cnx:

            store = dataimport.RQLObjectStore(cnx)

            # Check data insertion

            group_eid = store.prepare_insert_entity('CWGroup', name=u'grp')

            user_eid = store.prepare_insert_entity('CWUser', login=u'lgn',

                                                   upassword=u'pwd')

            store.prepare_insert_relation(user_eid, 'in_group', group_eid)

            cnx.commit()

            users = cnx.execute('CWUser X WHERE X login "lgn"')

            self.assertEqual(1, len(users))

            self.assertEqual(user_eid, users.one().eid)

            groups = cnx.execute('CWGroup X WHERE U in_group X, U login "lgn"')

            self.assertEqual(1, len(users))

            self.assertEqual(group_eid, groups.one().eid)

            # Check data update

            self.set_description('Check data update')

            store.prepare_update_entity('CWGroup', group_eid, name=u'new_grp')

            cnx.commit()

            group = cnx.execute('CWGroup X WHERE X name "grp"')

            self.assertEqual(len(group), 0)

            group = cnx.execute('CWGroup X WHERE X name "new_grp"')

            self.assertEqual, len(group), 1

            # Check data update with wrong type

            with self.assertRaises(AssertionError):

                store.prepare_update_entity('CWUser', group_eid, name=u'new_user')

            cnx.commit()

            group = cnx.execute('CWGroup X WHERE X name "new_user"')

            self.assertEqual(len(group), 0)

            group = cnx.execute('CWGroup X WHERE X name "new_grp"')

            self.assertEqual(len(group), 1)

class CreateCopyFromBufferTC(TestCase):

    # test converters

    def test_convert_none(self):

        cnvt = dataimport._copyfrom_buffer_convert_None

        self.assertEqual('NULL', cnvt(None))

    def test_convert_number(self):

        cnvt = dataimport._copyfrom_buffer_convert_number

        self.assertEqual('42', cnvt(42))

        self.assertEqual('42', cnvt(42L))

        self.assertEqual('42.42', cnvt(42.42))

    def test_convert_string(self):

        cnvt = dataimport._copyfrom_buffer_convert_string

        # simple

        self.assertEqual('babar', cnvt('babar'))

        # unicode

        self.assertEqual('\xc3\xa9l\xc3\xa9phant', cnvt(u'éléphant'))

        self.assertEqual('\xe9l\xe9phant', cnvt(u'éléphant', encoding='latin1'))

        # escaping

        self.assertEqual('babar\\tceleste\\n', cnvt('babar\tceleste\n'))

        self.assertEqual(r'C:\\new\tC:\\test', cnvt('C:\\new\tC:\\test'))

    def test_convert_date(self):

        cnvt = dataimport._copyfrom_buffer_convert_date

        self.assertEqual('0666-01-13', cnvt(DT.date(666, 1, 13)))

    def test_convert_time(self):

        cnvt = dataimport._copyfrom_buffer_convert_time

        self.assertEqual('06:06:06.000100', cnvt(DT.time(6, 6, 6, 100)))

    def test_convert_datetime(self):

        cnvt = dataimport._copyfrom_buffer_convert_datetime

        self.assertEqual('0666-06-13 06:06:06.000000', cnvt(DT.datetime(666, 6, 13, 6, 6, 6)))

    # test buffer

    def test_create_copyfrom_buffer_tuple(self):

        cnvt = dataimport._create_copyfrom_buffer

        data = ((42, 42L, 42.42, u'éléphant', DT.date(666, 1, 13), DT.time(6, 6, 6), DT.datetime(666, 6, 13, 6, 6, 6)),

                (6, 6L, 6.6, u'babar', DT.date(2014, 1, 14), DT.time(4, 2, 1), DT.datetime(2014, 1, 1, 0, 0, 0)))

        results = dataimport._create_copyfrom_buffer(data)

        # all columns

        expected = '''42\t42\t42.42\téléphant\t0666-01-13\t06:06:06.000000\t0666-06-13 06:06:06.000000

6\t6\t6.6\tbabar\t2014-01-14\t04:02:01.000000\t2014-01-01 00:00:00.000000'''

        self.assertMultiLineEqual(expected, results.getvalue())

        # selected columns

        results = dataimport._create_copyfrom_buffer(data, columns=(1, 3, 6))

        expected = '''42\téléphant\t0666-06-13 06:06:06.000000

6\tbabar\t2014-01-01 00:00:00.000000'''

        self.assertMultiLineEqual(expected, results.getvalue())

    def test_create_copyfrom_buffer_dict(self):

        cnvt = dataimport._create_copyfrom_buffer

        data = (dict(integer=42, double=42.42, text=u'éléphant', date=DT.datetime(666, 6, 13, 6, 6, 6)),

                dict(integer=6, double=6.6, text=u'babar', date=DT.datetime(2014, 1, 1, 0, 0, 0)))

        results = dataimport._create_copyfrom_buffer(data, ('integer', 'text'))

        expected = '''42\téléphant\n6\tbabar'''

        self.assertMultiLineEqual(expected, results.getvalue())

class UcsvreaderTC(TestCase):

    def test_empty_lines_skipped(self):

        stream = StringIO('''a,b,c,d,

1,2,3,4,

,,,,

,,,,

''')

        self.assertEqual([[u'a', u'b', u'c', u'd', u''],

                          [u'1', u'2', u'3', u'4', u''],

                          ],

                         list(dataimport.ucsvreader(stream)))

        stream.seek(0)

        self.assertEqual([[u'a', u'b', u'c', u'd', u''],

                          [u'1', u'2', u'3', u'4', u''],

                          [u'', u'', u'', u'', u''],

                          [u'', u'', u'', u'', u'']

                          ],

                         list(dataimport.ucsvreader(stream, skip_empty=False)))

    def test_skip_first(self):

        stream = StringIO('a,b,c,d,\n'

                          '1,2,3,4,\n')

        reader = dataimport.ucsvreader(stream, skipfirst=True,

                                       ignore_errors=True)

        self.assertEqual(list(reader),

                         [[u'1', u'2', u'3', u'4', u'']])

        stream.seek(0)

        reader = dataimport.ucsvreader(stream, skipfirst=True,

                                       ignore_errors=False)

        self.assertEqual(list(reader),

                         [[u'1', u'2', u'3', u'4', u'']])

        stream.seek(0)

        reader = dataimport.ucsvreader(stream, skipfirst=False,

                                       ignore_errors=True)

        self.assertEqual(list(reader),

                         [[u'a', u'b', u'c', u'd', u''],

                          [u'1', u'2', u'3', u'4', u'']])

        stream.seek(0)

        reader = dataimport.ucsvreader(stream, skipfirst=False,

                                       ignore_errors=False)

        self.assertEqual(list(reader),

                         [[u'a', u'b', u'c', u'd', u''],

                          [u'1', u'2', u'3', u'4', u'']])

class MetaGeneratorTC(CubicWebTC):

    def test_dont_generate_relation_to_internal_manager(self):

        with self.admin_access.repo_cnx() as cnx:

            metagen = dataimport.MetaGenerator(cnx)

            self.assertIn('created_by', metagen.etype_rels)

            self.assertIn('owned_by', metagen.etype_rels)

        with self.repo.internal_cnx() as cnx:

            metagen = dataimport.MetaGenerator(cnx)

            self.assertNotIn('created_by', metagen.etype_rels)

            self.assertNotIn('owned_by', metagen.etype_rels)

    def test_dont_generate_specified_values(self):

        with self.admin_access.repo_cnx() as cnx:

            metagen = dataimport.MetaGenerator(cnx)

            # hijack gen_modification_date to ensure we don't go through it

            metagen.gen_modification_date = None

            md = DT.datetime.now() - DT.timedelta(days=1)

            entity, rels = metagen.base_etype_dicts('CWUser')

            entity.cw_edited.update(dict(modification_date=md))

            with cnx.ensure_cnx_set:

                metagen.init_entity(entity)

            self.assertEqual(entity.cw_edited['modification_date'], md)

if __name__ == '__main__':

    unittest_main()