"""
Contract test for POST /auth/refresh 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 AuthRefreshContractTest(TestCase):
    def setUp(self):
        self.client = APIClient()
        self.refresh_url = '/api/v1/auth/refresh/'

        # Mock refresh token
        self.refresh_data = {
            'refresh_token': 'mock_refresh_token'
        }

    def test_refresh_success(self):
        """Test successful token refresh with valid refresh token."""
        response = self.client.post(
            self.refresh_url,
            data=json.dumps(self.refresh_data),
            content_type='application/json'
        )

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

        data = response.json()
        assert 'access_token' in data
        assert 'refresh_token' in data

        # New refresh token should be different (rotation enabled)
        assert data['refresh_token'] != self.refresh_data['refresh_token']

    def test_refresh_invalid_token(self):
        """Test refresh failure with invalid refresh token."""
        invalid_data = {
            'refresh_token': 'invalid_refresh_token'
        }

        response = self.client.post(
            self.refresh_url,
            data=json.dumps(invalid_data),
            content_type='application/json'
        )

        assert response.status_code == status.HTTP_401_UNAUTHORIZED

    def test_refresh_missing_token(self):
        """Test refresh failure with missing refresh token."""
        incomplete_data = {}

        response = self.client.post(
            self.refresh_url,
            data=json.dumps(incomplete_data),
            content_type='application/json'
        )

        assert response.status_code == status.HTTP_400_BAD_REQUEST

    def test_refresh_blacklisted_token(self):
        """Test refresh failure with blacklisted token."""
        blacklisted_data = {
            'refresh_token': 'blacklisted_refresh_token'
        }

        response = self.client.post(
            self.refresh_url,
            data=json.dumps(blacklisted_data),
            content_type='application/json'
        )

        assert response.status_code == status.HTTP_401_UNAUTHORIZED

    def test_refresh_expired_token(self):
        """Test refresh failure with expired refresh token."""
        expired_data = {
            'refresh_token': 'expired_refresh_token'
        }

        response = self.client.post(
            self.refresh_url,
            data=json.dumps(expired_data),
            content_type='application/json'
        )

        assert response.status_code == status.HTTP_401_UNAUTHORIZED

    def test_refresh_tenant_isolation(self):
        """Test that refresh token respects tenant isolation."""
        # This test ensures refresh tokens are tenant-specific
        response = self.client.post(
            self.refresh_url,
            data=json.dumps(self.refresh_data),
            content_type='application/json'
        )

        if response.status_code == status.HTTP_200_OK:
            data = response.json()
            # Tenant information should be included in token
            assert 'tenant_id' in data or 'tenant_slug' in data