from __future__ import unicode_literals

from django.contrib.auth import get_user_model
from django.contrib.auth.models import Group

from common.tests.test_views import GenericViewTestCase
from documents.tests.test_views import GenericDocumentViewTestCase

from metadata.models import MetadataType
from metadata.permissions import permission_metadata_document_edit

from metadata.tests.literals import (
    TEST_METADATA_TYPE_LABEL, TEST_METADATA_TYPE_NAME,
)

from ..permissions import (
    permission_user_delete, permission_user_edit, permission_user_view
)

from .literals import TEST_USER_PASSWORD_EDITED, TEST_USER_USERNAME

TEST_USER_TO_DELETE_USERNAME = 'user_to_delete'


class UserManagementViewTestCase(GenericViewTestCase):
    def setUp(self):
        super(UserManagementViewTestCase, self).setUp()
        self.login_user()

    def _set_password(self, password):
        return self.post(
            'user_management:user_set_password', args=(self.user.pk,), data={
                'new_password_1': password, 'new_password_2': password
            }
        )

    def test_user_set_password_view_no_permissions(self):
        self.grant(permission=permission_user_view)

        response = self._set_password(password=TEST_USER_PASSWORD_EDITED)

        self.assertEqual(response.status_code, 403)

        self.logout()

        with self.assertRaises(AssertionError):
            self.login(
                username=TEST_USER_USERNAME, password=TEST_USER_PASSWORD_EDITED
            )

        response = self.get('common:current_user_details')

        self.assertEqual(response.status_code, 302)

    def test_user_set_password_view_with_permissions(self):
        self.grant(permission=permission_user_edit)
        self.grant(permission=permission_user_view)

        response = self._set_password(password=TEST_USER_PASSWORD_EDITED)

        self.assertEqual(response.status_code, 302)

        self.logout()
        self.login(
            username=TEST_USER_USERNAME, password=TEST_USER_PASSWORD_EDITED
        )
        response = self.get('common:current_user_details')

        self.assertEqual(response.status_code, 200)

    def _multiple_user_set_password(self, password):
        return self.post(
            'user_management:user_multiple_set_password', data={
                'id_list': self.user.pk,
                'new_password_1': password,
                'new_password_2': password
            }, follow=True
        )

    def test_user_multiple_set_password_view_no_permissions(self):
        self.grant(permission=permission_user_view)

        response = self._multiple_user_set_password(
            password=TEST_USER_PASSWORD_EDITED
        )

        self.assertEqual(response.status_code, 403)

        self.logout()

        with self.assertRaises(AssertionError):
            self.login(
                username=TEST_USER_USERNAME, password=TEST_USER_PASSWORD_EDITED
            )

        response = self.get('common:current_user_details')

        self.assertEqual(response.status_code, 302)

    def test_user_multiple_set_password_view_with_permissions(self):
        self.grant(permission=permission_user_edit)
        self.grant(permission=permission_user_view)

        response = self._multiple_user_set_password(
            password=TEST_USER_PASSWORD_EDITED
        )

        self.assertEqual(response.status_code, 200)

        self.logout()
        self.login(
            username=TEST_USER_USERNAME, password=TEST_USER_PASSWORD_EDITED
        )
        response = self.get('common:current_user_details')

        self.assertEqual(response.status_code, 200)

    def test_user_delete_view_no_permissions(self):
        user = get_user_model().objects.create(
            username=TEST_USER_TO_DELETE_USERNAME
        )

        self.grant(permission=permission_user_view)

        response = self.post(
            'user_management:user_delete', args=(user.pk,)
        )

        self.assertEqual(response.status_code, 403)
        self.assertEqual(get_user_model().objects.count(), 3)

    def test_user_delete_view_with_permissions(self):
        user = get_user_model().objects.create(
            username=TEST_USER_TO_DELETE_USERNAME
        )

        self.grant(permission=permission_user_delete)
        self.grant(permission=permission_user_view)

        response = self.post(
            'user_management:user_delete', args=(user.pk,), follow=True
        )

        self.assertContains(response, text='deleted', status_code=200)
        self.assertEqual(get_user_model().objects.count(), 2)

    def test_user_multiple_delete_view_no_permissions(self):
        user = get_user_model().objects.create(
            username=TEST_USER_TO_DELETE_USERNAME
        )

        self.grant(permission=permission_user_view)

        response = self.post(
            'user_management:user_multiple_delete', data={
                'id_list': user.pk
            }
        )

        self.assertEqual(response.status_code, 403)
        self.assertEqual(get_user_model().objects.count(), 3)

    def test_user_multiple_delete_view_with_permissions(self):
        user = get_user_model().objects.create(
            username=TEST_USER_TO_DELETE_USERNAME
        )

        self.grant(permission=permission_user_delete)
        self.grant(permission=permission_user_view)

        response = self.post(
            'user_management:user_multiple_delete', data={
                'id_list': user.pk,
            }, follow=True
        )

        self.assertContains(response, text='deleted', status_code=200)
        self.assertEqual(get_user_model().objects.count(), 2)


class MetadataLookupIntegrationTestCase(GenericDocumentViewTestCase):
    def setUp(self):
        super(MetadataLookupIntegrationTestCase, self).setUp()

        self.metadata_type = MetadataType.objects.create(
            name=TEST_METADATA_TYPE_NAME, label=TEST_METADATA_TYPE_LABEL
        )

        self.document_type.metadata.create(metadata_type=self.metadata_type)

        self.login_user()

    def test_user_list_lookup_render(self):
        self.metadata_type.lookup = '{{ users }}'
        self.metadata_type.save()
        self.document.metadata.create(metadata_type=self.metadata_type)
        self.role.permissions.add(
            permission_metadata_document_edit.stored_permission
        )

        response = self.get(
            viewname='metadata:metadata_edit', args=(self.document.pk,)
        )

        self.assertContains(
            response, text='<option value="{}">{}</option>'.format(
                TEST_USER_USERNAME, TEST_USER_USERNAME
            ), status_code=200
        )

    def test_group_list_lookup_render(self):
        self.metadata_type.lookup = '{{ groups }}'
        self.metadata_type.save()
        self.document.metadata.create(metadata_type=self.metadata_type)
        self.role.permissions.add(
            permission_metadata_document_edit.stored_permission
        )

        response = self.get(
            viewname='metadata:metadata_edit', args=(self.document.pk,)
        )

        self.assertContains(
            response, text='<option value="{}">{}</option>'.format(
                Group.objects.first().name, Group.objects.first().name
            ), status_code=200
        )
