"""
Contract test for POST /auth/logout endpoint.
This test MUST fail before implementation.
"""

import pytest
from django.test import TestCase
from django.urls import reverse
from rest_framework.test import APIClient
from rest_framework import status
import json


class AuthLogoutContractTest(TestCase):
    def setUp(self):
        self.client = APIClient()
        self.logout_url = '/api/v1/auth/logout/'

        # Mock authentication token
        self.auth_header = {'HTTP_AUTHORIZATION': 'Bearer mock_token'}

    def test_logout_success(self):
        """Test successful logout with valid token."""
        response = self.client.post(
            self.logout_url,
            **self.auth_header
        )

        # This should fail before implementation
        assert response.status_code == status.HTTP_200_OK

        data = response.json()
        assert 'message' in data
        assert data['message'] == 'Successfully logged out'

    def test_logout_no_token(self):
        """Test logout failure without authentication token."""
        response = self.client.post(self.logout_url)

        assert response.status_code == status.HTTP_401_UNAUTHORIZED

    def test_logout_invalid_token(self):
        """Test logout failure with invalid token."""
        invalid_auth_header = {'HTTP_AUTHORIZATION': 'Bearer invalid_token'}

        response = self.client.post(
            self.logout_url,
            **invalid_auth_header
        )

        assert response.status_code == status.HTTP_401_UNAUTHORIZED

    def test_logout_expired_token(self):
        """Test logout failure with expired token."""
        expired_auth_header = {'HTTP_AUTHORIZATION': 'Bearer expired_token'}

        response = self.client.post(
            self.logout_url,
            **expired_auth_header
        )

        assert response.status_code == status.HTTP_401_UNAUTHORIZED

    def test_logout_token_blacklisting(self):
        """Test that logout token is blacklisted."""
        # This test verifies that the token is added to blacklist
        response = self.client.post(
            self.logout_url,
            **self.auth_header
        )

        if response.status_code == status.HTTP_200_OK:
            # Token should be blacklisted and cannot be used again
            second_response = self.client.post(
                self.logout_url,
                **self.auth_header
            )
            assert second_response.status_code == status.HTTP_401_UNAUTHORIZED