import abc

from django.test import TestCase
from model_mommy import mommy

from api.models import DOCUMENT_CLASSIFICATION, Category

from .api.utils import prepare_project


class TestCategoryAnnotation(abc.ABC, TestCase):
    exclusive = True
    collaborative = False

    @classmethod
    def setUpTestData(cls):
        cls.project = prepare_project(
            DOCUMENT_CLASSIFICATION,
            single_class_classification=cls.exclusive,
            collaborative_annotation=cls.collaborative
        )
        cls.example = mommy.make('Example', project=cls.project.item)
        cls.label_type = mommy.make('CategoryType', project=cls.project.item)
        users = cls.project.users
        cls.user = users[0]
        cls.another_user = users[1]
        cls.category = Category(
            example=cls.example,
            label=cls.label_type,
            user=cls.user
        )

    def test_can_annotate_category_to_unannotated_data(self):
        can_annotate = Category.objects.can_annotate(self.category, self.project.item)
        self.assertTrue(can_annotate)


class NonCollaborativeMixin:

    def test_cannot_annotate_same_category_to_annotated_data(self):
        mommy.make('Category', example=self.example, label=self.label_type, user=self.user)
        can_annotate = Category.objects.can_annotate(self.category, self.project.item)
        self.assertFalse(can_annotate)

    def test_allow_another_user_to_annotate_same_category(self):
        mommy.make(
            'Category',
            example=self.example,
            label=self.label_type,
            user=self.another_user
        )
        can_annotate = Category.objects.can_annotate(self.category, self.project.item)
        self.assertTrue(can_annotate)


class TestExclusiveCategoryAnnotation(TestCategoryAnnotation, NonCollaborativeMixin):
    exclusive = True
    collaborative = False

    def test_cannot_annotate_different_category_to_annotated_data(self):
        mommy.make('Category', example=self.example, user=self.user)
        can_annotate = Category.objects.can_annotate(self.category, self.project.item)
        self.assertFalse(can_annotate)


class TestNonExclusiveCategoryAnnotation(TestCategoryAnnotation, NonCollaborativeMixin):
    exclusive = False
    collaborative = False

    def test_can_annotate_different_category_to_annotated_data(self):
        mommy.make('Category', example=self.example, user=self.user)
        can_annotate = Category.objects.can_annotate(self.category, self.project.item)
        self.assertTrue(can_annotate)


class CollaborativeMixin:

    def test_deny_another_user_to_annotate_same_category(self):
        mommy.make(
            'Category',
            example=self.example,
            label=self.label_type,
            user=self.another_user
        )
        can_annotate = Category.objects.can_annotate(self.category, self.project.item)
        self.assertFalse(can_annotate)


class TestCollaborativeExclusiveCategoryAnnotation(TestCategoryAnnotation, CollaborativeMixin):
    exclusive = True
    collaborative = True

    def test_deny_another_user_to_annotate_different_category(self):
        mommy.make(
            'Category',
            example=self.example,
            user=self.another_user
        )
        can_annotate = Category.objects.can_annotate(self.category, self.project.item)
        self.assertFalse(can_annotate)


class TestCollaborativeNonExclusiveCategoryAnnotation(TestCategoryAnnotation, CollaborativeMixin):
    exclusive = False
    collaborative = True

    def test_allow_another_user_to_annotate_different_category(self):
        mommy.make(
            'Category',
            example=self.example,
            user=self.another_user
        )
        can_annotate = Category.objects.can_annotate(self.category, self.project.item)
        self.assertTrue(can_annotate)