import json

from django.core.urlresolvers import reverse
from django.dispatch import receiver
from rest_framework import status
from rest_framework.test import APIClient

from openslides import __version__ as version
from openslides.core.config import ConfigVariable, config
from openslides.core.models import CustomSlide, Projector
from openslides.core.signals import config_signal
from openslides.utils.rest_api import ValidationError
from openslides.utils.test import TestCase


class ProjectorAPI(TestCase):
    """
    Tests requests from the anonymous user.
    """
    def test_slide_on_default_projector(self):
        self.client.login(username='admin', password='admin')
        customslide = CustomSlide.objects.create(title='title_que1olaish5Wei7que6i', text='text_aishah8Eh7eQuie5ooji')
        default_projector = Projector.objects.get(pk=1)
        default_projector.config = [{'name': 'core/customslide', 'id': customslide.id}]
        default_projector.save()
        element_uuid = Projector.objects.get(pk=1).config[0]['uuid']

        response = self.client.get(reverse('projector-detail', args=['1']))

        self.assertEqual(response.status_code, status.HTTP_200_OK)
        self.assertEqual(json.loads(response.content.decode()), {
            'id': 1,
            'config': [{'name': 'core/customslide', 'id': customslide.id, 'uuid': element_uuid}],
            'elements': [
                {'name': 'core/customslide',
                 'context': {'id': customslide.id}}]})

    def test_invalid_slide_on_default_projector(self):
        self.client.login(username='admin', password='admin')
        default_projector = Projector.objects.get(pk=1)
        default_projector.config = [{'name': 'invalid_slide'}]
        default_projector.save()
        element_uuid = Projector.objects.get(pk=1).config[0]['uuid']

        response = self.client.get(reverse('projector-detail', args=['1']))

        self.assertEqual(response.status_code, status.HTTP_200_OK)
        self.assertEqual(json.loads(response.content.decode()), {
            'id': 1,
            'config': [{'name': 'invalid_slide', 'uuid': element_uuid}],
            'elements': [
                {'name': 'invalid_slide',
                 'error': 'Projector element does not exist.'}]})


class VersionView(TestCase):
    """
    Tests the version info view.
    """
    def test_get(self):
        self.client.login(username='admin', password='admin')
        response = self.client.get(reverse('core_version'))
        self.assertEqual(json.loads(response.content.decode()), {
            'openslides_version': version,
            'plugins': [
                {'verbose_name': 'Plugin tests.old.utils',
                 'description': 'Description of plugin tests.old.utils',
                 'version': 'unknown'}]})


class ConfigViewSet(TestCase):
    """
    Tests requests to deal with config variables.
    """
    def test_retrieve(self):
        self.client.login(username='admin', password='admin')
        config['test_var_aeW3Quahkah1phahCheo'] = 'test_value_Oovoojieme7eephaed2A'
        response = self.client.get(reverse('config-detail', args=['test_var_aeW3Quahkah1phahCheo']))
        self.assertEqual(
            response.data,
            {'key': 'test_var_aeW3Quahkah1phahCheo',
             'value': 'test_value_Oovoojieme7eephaed2A'})

    def test_update(self):
        self.client = APIClient()
        self.client.login(username='admin', password='admin')
        response = self.client.put(
            reverse('config-detail', args=['test_var_Xeiizi7ooH8Thuk5aida']),
            {'value': 'test_value_Phohx3oopeichaiTheiw'})
        self.assertEqual(response.status_code, status.HTTP_200_OK)
        self.assertEqual(config['test_var_Xeiizi7ooH8Thuk5aida'], 'test_value_Phohx3oopeichaiTheiw')

    def test_update_wrong_datatype(self):
        self.client = APIClient()
        self.client.login(username='admin', password='admin')
        response = self.client.put(
            reverse('config-detail', args=['test_var_ohhii4iavoh5Phoh5ahg']),
            {'value': 'test_value_string'})
        self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
        self.assertEqual(response.data, {'detail': "Wrong datatype. Expected <class 'int'>, got <class 'str'>."})

    def test_update_wrong_datatype_that_can_be_converted(self):
        """
        Try to send a string that can be converted to an integer to an integer
        field.
        """
        self.client = APIClient()
        self.client.login(username='admin', password='admin')
        response = self.client.put(
            reverse('config-detail', args=['test_var_ohhii4iavoh5Phoh5ahg']),
            {'value': '12345'})
        self.assertEqual(response.status_code, 200)

    def test_update_good_choice(self):
        self.client = APIClient()
        self.client.login(username='admin', password='admin')
        response = self.client.put(
            reverse('config-detail', args=['test_var_wei0Rei9ahzooSohK1ph']),
            {'value': 'key_2_yahb2ain1aeZ1lea1Pei'})
        self.assertEqual(response.status_code, status.HTTP_200_OK)
        self.assertEqual(config['test_var_wei0Rei9ahzooSohK1ph'], 'key_2_yahb2ain1aeZ1lea1Pei')

    def test_update_bad_choice(self):
        self.client = APIClient()
        self.client.login(username='admin', password='admin')
        response = self.client.put(
            reverse('config-detail', args=['test_var_wei0Rei9ahzooSohK1ph']),
            {'value': 'test_value_bad_string'})
        self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
        self.assertEqual(response.data, {'detail': 'Invalid input. Choice does not match.'})

    def test_update_validator_ok(self):
        self.client = APIClient()
        self.client.login(username='admin', password='admin')
        response = self.client.put(
            reverse('config-detail', args=['test_var_Hi7Oje8Oith7goopeeng']),
            {'value': 'valid_string'})
        self.assertEqual(response.status_code, status.HTTP_200_OK)
        self.assertEqual(config['test_var_Hi7Oje8Oith7goopeeng'], 'valid_string')

    def test_update_validator_invalid(self):
        self.client = APIClient()
        self.client.login(username='admin', password='admin')
        response = self.client.put(
            reverse('config-detail', args=['test_var_Hi7Oje8Oith7goopeeng']),
            {'value': 'invalid_string'})
        self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
        self.assertEqual(response.data, {'detail': 'Invalid input.'})


def validator_for_testing(value):
    """
    Validator for testing.
    """
    if value == 'invalid_string':
        raise ValidationError({'detail': 'Invalid input.'})


@receiver(config_signal, dispatch_uid='set_simple_config_view_integration_config_test')
def set_simple_config_view_integration_config_test(sender, **kwargs):
    """
    Sets a simple config view with some config variables but without
    grouping.
    """
    yield ConfigVariable(
        name='test_var_aeW3Quahkah1phahCheo',
        default_value=None,
        label='test_label_aeNahsheu8phahk8taYo')

    yield ConfigVariable(
        name='test_var_Xeiizi7ooH8Thuk5aida',
        default_value='')

    yield ConfigVariable(
        name='test_var_ohhii4iavoh5Phoh5ahg',
        default_value=0,
        input_type='integer')

    yield ConfigVariable(
        name='test_var_wei0Rei9ahzooSohK1ph',
        default_value='key_1_Queit2juchoocos2Vugh',
        input_type='choice',
        choices=(
            {'value': 'key_1_Queit2juchoocos2Vugh', 'display_name': 'label_1_Queit2juchoocos2Vugh'},
            {'value': 'key_2_yahb2ain1aeZ1lea1Pei', 'display_name': 'label_2_yahb2ain1aeZ1lea1Pei'}))

    yield ConfigVariable(
        name='test_var_Hi7Oje8Oith7goopeeng',
        default_value='',
        validators=(validator_for_testing,))