from django.test import TestCase, Client
from django.urls import reverse
from django.contrib.auth import get_user_model
from django.contrib.auth.models import AnonymousUser
from django.contrib.contenttypes.models import ContentType
from django.core.files.uploadedfile import SimpleUploadedFile
from django.http import JsonResponse, HttpRequest
from django.utils import timezone
from django.utils.datastructures import MultiValueDict
from django.http import QueryDict
from .models import EditSubmission, PhotoSubmission
from .mixins import EditSubmissionMixin, PhotoSubmissionMixin, ModeratorRequiredMixin, AdminRequiredMixin, InlineEditMixin, HistoryMixin
from companies.models import Company
from django.views.generic import DetailView
from django.test import RequestFactory
import json
from typing import Optional

User = get_user_model()

class TestView(EditSubmissionMixin, PhotoSubmissionMixin, InlineEditMixin, HistoryMixin, DetailView):
    model = Company
    template_name = 'test.html'
    pk_url_kwarg = 'pk'
    slug_url_kwarg = 'slug'

    def get_context_data(self, **kwargs):
        if not hasattr(self, 'object'):
            self.object = self.get_object()
        return super().get_context_data(**kwargs)

    def setup(self, request: HttpRequest, *args, **kwargs):
        super().setup(request, *args, **kwargs)
        self.request = request

class ModerationMixinsTests(TestCase):
    def setUp(self):
        self.client = Client()
        self.factory = RequestFactory()
        
        # Create users with different roles
        self.user = User.objects.create_user(
            username='testuser',
            email='test@example.com',
            password='testpass123'
        )
        self.moderator = User.objects.create_user(
            username='moderator',
            email='moderator@example.com',
            password='modpass123',
            role='MODERATOR'
        )
        self.admin = User.objects.create_user(
            username='admin',
            email='admin@example.com',
            password='adminpass123',
            role='ADMIN'
        )
        
        # Create test company
        self.company = Company.objects.create(
            name='Test Company',
            website='http://example.com',
            headquarters='Test HQ',
            description='Test Description'
        )

    def test_edit_submission_mixin_unauthenticated(self):
        """Test edit submission when not logged in"""
        view = TestView()
        request = self.factory.post(f'/test/{self.company.pk}/')
        request.user = AnonymousUser()
        view.setup(request, pk=self.company.pk)
        view.kwargs = {'pk': self.company.pk}
        response = view.handle_edit_submission(request, {})
        self.assertIsInstance(response, JsonResponse)
        self.assertEqual(response.status_code, 403)

    def test_edit_submission_mixin_no_changes(self):
        """Test edit submission with no changes"""
        view = TestView()
        request = self.factory.post(
            f'/test/{self.company.pk}/',
            data=json.dumps({}),
            content_type='application/json'
        )
        request.user = self.user
        view.setup(request, pk=self.company.pk)
        view.kwargs = {'pk': self.company.pk}
        response = view.post(request)
        self.assertIsInstance(response, JsonResponse)
        self.assertEqual(response.status_code, 400)

    def test_edit_submission_mixin_invalid_json(self):
        """Test edit submission with invalid JSON"""
        view = TestView()
        request = self.factory.post(
            f'/test/{self.company.pk}/',
            data='invalid json',
            content_type='application/json'
        )
        request.user = self.user
        view.setup(request, pk=self.company.pk)
        view.kwargs = {'pk': self.company.pk}
        response = view.post(request)
        self.assertIsInstance(response, JsonResponse)
        self.assertEqual(response.status_code, 400)

    def test_edit_submission_mixin_regular_user(self):
        """Test edit submission as regular user"""
        view = TestView()
        request = self.factory.post(f'/test/{self.company.pk}/')
        request.user = self.user
        view.setup(request, pk=self.company.pk)
        view.kwargs = {'pk': self.company.pk}
        changes = {'name': 'New Name'}
        response = view.handle_edit_submission(request, changes, 'Test reason', 'Test source')
        self.assertIsInstance(response, JsonResponse)
        self.assertEqual(response.status_code, 200)
        data = json.loads(response.content.decode())
        self.assertFalse(data['auto_approved'])

    def test_edit_submission_mixin_moderator(self):
        """Test edit submission as moderator"""
        view = TestView()
        request = self.factory.post(f'/test/{self.company.pk}/')
        request.user = self.moderator
        view.setup(request, pk=self.company.pk)
        view.kwargs = {'pk': self.company.pk}
        changes = {'name': 'New Name'}
        response = view.handle_edit_submission(request, changes, 'Test reason', 'Test source')
        self.assertIsInstance(response, JsonResponse)
        self.assertEqual(response.status_code, 200)
        data = json.loads(response.content.decode())
        self.assertTrue(data['auto_approved'])

    def test_photo_submission_mixin_unauthenticated(self):
        """Test photo submission when not logged in"""
        view = TestView()
        view.kwargs = {'pk': self.company.pk}
        view.object = self.company
        
        request = self.factory.post(
            f'/test/{self.company.pk}/',
            data={},
            format='multipart'
        )
        request.user = AnonymousUser()
        view.setup(request, pk=self.company.pk)
        response = view.handle_photo_submission(request)
        self.assertIsInstance(response, JsonResponse)
        self.assertEqual(response.status_code, 403)

    def test_photo_submission_mixin_no_photo(self):
        """Test photo submission with no photo"""
        view = TestView()
        view.kwargs = {'pk': self.company.pk}
        view.object = self.company
        
        request = self.factory.post(
            f'/test/{self.company.pk}/',
            data={},
            format='multipart'
        )
        request.user = self.user
        view.setup(request, pk=self.company.pk)
        response = view.handle_photo_submission(request)
        self.assertIsInstance(response, JsonResponse)
        self.assertEqual(response.status_code, 400)

    def test_photo_submission_mixin_regular_user(self):
        """Test photo submission as regular user"""
        view = TestView()
        view.kwargs = {'pk': self.company.pk}
        view.object = self.company
        
        # Create a test photo file
        photo = SimpleUploadedFile(
            'test.gif',
            b'GIF87a\x01\x00\x01\x00\x80\x01\x00\x00\x00\x00ccc,\x00\x00\x00\x00\x01\x00\x01\x00\x00\x02\x02D\x01\x00;',
            content_type='image/gif'
        )
        
        request = self.factory.post(
            f'/test/{self.company.pk}/',
            data={'photo': photo, 'caption': 'Test Photo', 'date_taken': '2024-01-01'},
            format='multipart'
        )
        request.user = self.user
        view.setup(request, pk=self.company.pk)
        
        response = view.handle_photo_submission(request)
        self.assertIsInstance(response, JsonResponse)
        self.assertEqual(response.status_code, 200)
        data = json.loads(response.content.decode())
        self.assertFalse(data['auto_approved'])

    def test_photo_submission_mixin_moderator(self):
        """Test photo submission as moderator"""
        view = TestView()
        view.kwargs = {'pk': self.company.pk}
        view.object = self.company
        
        # Create a test photo file
        photo = SimpleUploadedFile(
            'test.gif',
            b'GIF87a\x01\x00\x01\x00\x80\x01\x00\x00\x00\x00ccc,\x00\x00\x00\x00\x01\x00\x01\x00\x00\x02\x02D\x01\x00;',
            content_type='image/gif'
        )
        
        request = self.factory.post(
            f'/test/{self.company.pk}/',
            data={'photo': photo, 'caption': 'Test Photo', 'date_taken': '2024-01-01'},
            format='multipart'
        )
        request.user = self.moderator
        view.setup(request, pk=self.company.pk)
        
        response = view.handle_photo_submission(request)
        self.assertIsInstance(response, JsonResponse)
        self.assertEqual(response.status_code, 200)
        data = json.loads(response.content.decode())
        self.assertTrue(data['auto_approved'])

    def test_moderator_required_mixin(self):
        """Test moderator required mixin"""
        class TestModeratorView(ModeratorRequiredMixin):
            pass

        view = TestModeratorView()
        
        # Test unauthenticated user
        request = self.factory.get('/test/')
        request.user = AnonymousUser()
        view.request = request
        self.assertFalse(view.test_func())
        
        # Test regular user
        request.user = self.user
        view.request = request
        self.assertFalse(view.test_func())
        
        # Test moderator
        request.user = self.moderator
        view.request = request
        self.assertTrue(view.test_func())
        
        # Test admin
        request.user = self.admin
        view.request = request
        self.assertTrue(view.test_func())

    def test_admin_required_mixin(self):
        """Test admin required mixin"""
        class TestAdminView(AdminRequiredMixin):
            pass

        view = TestAdminView()
        
        # Test unauthenticated user
        request = self.factory.get('/test/')
        request.user = AnonymousUser()
        view.request = request
        self.assertFalse(view.test_func())
        
        # Test regular user
        request.user = self.user
        view.request = request
        self.assertFalse(view.test_func())
        
        # Test moderator
        request.user = self.moderator
        view.request = request
        self.assertFalse(view.test_func())
        
        # Test admin
        request.user = self.admin
        view.request = request
        self.assertTrue(view.test_func())

    def test_inline_edit_mixin(self):
        """Test inline edit mixin"""
        view = TestView()
        view.kwargs = {'pk': self.company.pk}
        view.object = self.company
        
        # Test unauthenticated user
        request = self.factory.get(f'/test/{self.company.pk}/')
        request.user = AnonymousUser()
        view.setup(request, pk=self.company.pk)
        context = view.get_context_data()
        self.assertNotIn('can_edit', context)
        
        # Test regular user
        request.user = self.user
        view.setup(request, pk=self.company.pk)
        context = view.get_context_data()
        self.assertTrue(context['can_edit'])
        self.assertFalse(context['can_auto_approve'])
        
        # Test moderator
        request.user = self.moderator
        view.setup(request, pk=self.company.pk)
        context = view.get_context_data()
        self.assertTrue(context['can_edit'])
        self.assertTrue(context['can_auto_approve'])

    def test_history_mixin(self):
        """Test history mixin"""
        view = TestView()
        view.kwargs = {'pk': self.company.pk}
        view.object = self.company
        request = self.factory.get(f'/test/{self.company.pk}/')
        request.user = self.user
        view.setup(request, pk=self.company.pk)
        
        # Create some edit submissions
        EditSubmission.objects.create(
            user=self.user,
            content_type=ContentType.objects.get_for_model(Company),
            object_id=getattr(self.company, 'id', None),
            submission_type='EDIT',
            changes={'name': 'New Name'},
            status='APPROVED'
        )
        
        context = view.get_context_data()
        self.assertIn('history', context)
        self.assertIn('edit_submissions', context)
        self.assertEqual(len(context['edit_submissions']), 1)