import os
from io import BytesIO

from openslides.motions.csv_import import import_motions
from openslides.motions.models import Category, Motion
from openslides.users.models import User
from openslides.utils.test import TestCase
from openslides.config.api import config


class CSVImport(TestCase):
    def setUp(self):
        # User1
        self.user1 = User.objects.create_user('Admin_ieY0Eereimeimeizuosh', 'eHiK1aiRahxaix0Iequ2')

        # Normal user
        self.normal_user = User.objects.create_user('User_CiuNgo4giqueeChie5oi', 'eihi1Eequaek4eagaiKu')

        # Category
        Category.objects.create(name='Bildung', prefix='B1')
        Category.objects.create(name='Bildung', prefix='B2')

    def test_example_file_de(self):
        # Set config to sort names by first_name because the example csv-file
        # expect this.
        config['users_sort_users_by_first_name'] = True
        special_user = User.objects.create_user(username='Harry_Holland',
                                                password='iegheeChaje7guthie4a',
                                                first_name='Harry',
                                                last_name='Holland')
        for i in range(2):
            username = 'John_Doe_%d' % i
            User.objects.create_user(username=username,
                                     password='default',
                                     first_name='John',
                                     last_name='Doe')

        csv_dir = os.path.join(os.path.dirname(__file__), '..', '..', '..', 'extras', 'csv-examples')
        self.assertEqual(Motion.objects.count(), 0)
        with open(csv_dir + '/motions-demo_de.csv', 'rb') as f:
            success_message, warning_message, error_message = import_motions(
                csvfile=f, default_submitter=self.normal_user, override=False, importing_person=self.user1)
        self.assertEqual(Motion.objects.count(), 11)

        motion1 = Motion.objects.get(pk=1)
        self.assertEqual(motion1.identifier, '1')
        self.assertEqual(motion1.title, u'Entlastung des Vorstandes')
        self.assertEqual(motion1.text, u'Die Versammlung möge beschließen, den Vorstand für seine letzte Legislaturperiode zu entlasten.')
        self.assertEqual(motion1.reason, u'Bericht erfolgt mündlich.')
        self.assertEqual(len(motion1.submitter.all()), 1)
        self.assertEqual(motion1.submitter.all()[0].person, self.normal_user)
        self.assertTrue(motion1.category is None)
        self.assertTrue('Submitter unknown.' in warning_message)
        self.assertTrue('Category unknown.' in warning_message)

        motion2 = Motion.objects.get(pk=2)
        self.assertEqual(motion2.identifier, 'SA 1')
        self.assertEqual(motion2.title, u'Satzungsänderung § 2 Abs. 3')
        self.assertHTMLEqual(motion2.text, u'''<p>Die Versammlung möge beschließen, die Satzung in § 2 Abs. 3 wie folgt zu ändern:</p>
                                               <p>Es wird vor dem Wort "Zweck" das Wort "gemeinnütziger" eingefügt.</p>''')
        self.assertEqual(motion2.reason, u'Die Änderung der Satzung ist aufgrund der letzten Erfahrungen eine sinnvolle Maßnahme, weil ...')
        self.assertEqual(len(motion2.submitter.all()), 1)
        self.assertEqual(motion2.submitter.all()[0].person, special_user)
        self.assertEqual(motion2.category.name, u"Satzungsanträge")  # category is created automatically

        # check user 'John Doe'
        self.assertTrue('Several suitable submitters found.' in warning_message)
        # check category 'Bildung'
        self.assertTrue('Several suitable categories found.' in warning_message)

    def test_malformed_file(self):
        csv_file = BytesIO()
        csv_file.write(bytes('Header\nMalformed data,\n,Title,Text,,,\n', 'utf8'))
        success_message, warning_message, error_message = import_motions(
            csvfile=csv_file, default_submitter=self.normal_user.id, override=False)
        self.assertEqual(success_message, '')
        self.assertTrue('Line is malformed.' in error_message)

    def test_wrong_encoding(self):
        csv_file = BytesIO(bytes('Müller', 'iso-8859-15'))
        success_message, warning_message, error_message = import_motions(
            csvfile=csv_file,
            default_submitter=self.normal_user.id,
            override=False)
        self.assertEqual(success_message, '')
        self.assertIn('Import file has wrong character encoding, only UTF-8 is supported!', error_message)