import pytest

from django.db import models

from rest_framework.exceptions import ValidationError

from api.tests.unit.test_unit_serializer import (
    SerializerTestCases
)

from centurion.tests.abstract.mock_view import MockView
# from project_management.serializers.project import (
#     ProjectMilestone,
# )



@pytest.mark.model_projectmilestone
class ProjectMilestoneSerializerTestCases(
    SerializerTestCases
):


    # @pytest.fixture( scope = 'function' )
    # def created_model(self, django_db_blocker, model, model_kwargs):

    #     with django_db_blocker.unblock():

    #         kwargs_many_to_many = {}

    #         kwargs = {}

    #         for key, value in model_kwargs.items():

    #             field = model._meta.get_field(key)

    #             if isinstance(field, models.ManyToManyField):

    #                 kwargs_many_to_many.update({
    #                     key: value
    #                 })

    #             else:

    #                 kwargs.update({
    #                     key: value
    #                 })


    #         item = model.objects.create( **kwargs )

    #         for key, value in kwargs_many_to_many.items():

    #             field = getattr(item, key)

    #             for entry in value:

    #                 field.add(entry)

    #         yield item

    #         item.delete()



    def test_serializer_validation_no_name(self,
        kwargs_api_create, model, model_serializer, request_user, model_kwargs
    ):
        """Serializer Validation Check

        Ensure that if creating and no name is provided a validation error occurs
        """

        mock_view = MockView(
            user = request_user,
            model = model,
            action = 'create',
        )

        kwargs = kwargs_api_create.copy()
        del kwargs['name']

        with pytest.raises(ValidationError) as err:

            serializer = model_serializer['model'](
                context = {
                    'request': mock_view.request,
                    'view': mock_view,
                },
                data = kwargs,
            )

            serializer.is_valid(raise_exception = True)

        assert err.value.get_codes()['name'][0] == 'required'



    def test_serializer_is_valid(self, kwargs_api_create, model, model_serializer, request_user):
        """ Serializer Check

        Confirm that using valid data the object validates without exceptions.
        """

        mock_view = MockView(
            user = request_user,
            model = model,
            action = 'create',
        )

        mock_view.kwargs = { 'project_id': kwargs_api_create['project'] }

        serializer = model_serializer['model'](
            context = {
                'request': mock_view.request,
                'view': mock_view,
            },
            data = kwargs_api_create
        )

        assert serializer.is_valid(raise_exception = True)



    @pytest.mark.regression
    def test_serializer_create_calls_model_full_clean(self,
        kwargs_api_create, mocker, model, model_serializer, request_user
    ):
        """ Serializer Check

        Confirm that using valid data the object validates without exceptions.
        """

        mock_view = MockView(
            user = request_user,
            model = model,
            action = 'create',
        )

        mock_view.kwargs = { 'project_id': kwargs_api_create['project'] }

        serializer = model_serializer['model'](
            context = {
                'request': mock_view.request,
                'view': mock_view,
            },
            data = kwargs_api_create
        )

        serializer.is_valid(raise_exception = True)

        full_clean = mocker.spy(model, 'full_clean')

        serializer.save()

        full_clean.assert_called_once()



class ProjectMilestoneSerializerInheritedCases(
    ProjectMilestoneSerializerTestCases
):
    pass



@pytest.mark.module_project_management
class ProjectMilestoneSerializerPyTest(
    ProjectMilestoneSerializerTestCases
):
    pass