"""
Contract test for POST /tenants 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 TenantsPostContractTest(TestCase):
    def setUp(self):
        self.client = APIClient()
        self.tenants_url = '/api/v1/tenants/'

        # Admin authentication header
        self.admin_auth = {'HTTP_AUTHORIZATION': 'Bearer admin_token'}

        # Valid tenant data
        self.tenant_data = {
            'name': 'Test Business Sdn Bhd',
            'email': 'business@test.com',
            'phone': '+60123456789',
            'address': {
                'street': '123 Business Street',
                'city': 'Kuala Lumpur',
                'state': 'Wilayah Persekutuan',
                'postal_code': '50000',
                'country': 'Malaysia'
            },
            'business_type': 'RETAIL',
            'subscription_plan': 'STARTER',
            'pricing_model': 'SUBSCRIPTION'
        }

    def test_create_tenant_success(self):
        """Test successful tenant creation."""
        response = self.client.post(
            self.tenants_url,
            data=json.dumps(self.tenant_data),
            content_type='application/json',
            **self.admin_auth
        )

        # This should fail before implementation
        assert response.status_code == status.HTTP_201_CREATED

        data = response.json()
        assert 'id' in data
        assert data['name'] == self.tenant_data['name']
        assert data['email'] == self.tenant_data['email']
        assert data['business_type'] == self.tenant_data['business_type']
        assert data['subscription_plan'] == self.tenant_data['subscription_plan']
        assert data['pricing_model'] == self.tenant_data['pricing_model']
        assert data['status'] == 'PENDING'  # Default status

        # Should have generated slug
        assert 'slug' in data
        assert data['slug'] == 'test-business-sdn-bhd'

        # Should have timestamps
        assert 'created_at' in data
        assert 'updated_at' in data

    def test_create_tenant_unauthorized(self):
        """Test tenant creation without authentication."""
        response = self.client.post(
            self.tenants_url,
            data=json.dumps(self.tenant_data),
            content_type='application/json'
        )

        assert response.status_code == status.HTTP_401_UNAUTHORIZED

    def test_create_tenant_forbidden(self):
        """Test tenant creation by non-admin user."""
        non_admin_auth = {'HTTP_AUTHORIZATION': 'Bearer user_token'}

        response = self.client.post(
            self.tenants_url,
            data=json.dumps(self.tenant_data),
            content_type='application/json',
            **non_admin_auth
        )

        assert response.status_code == status.HTTP_403_FORBIDDEN

    def test_create_tenant_missing_required_fields(self):
        """Test tenant creation with missing required fields."""
        incomplete_data = self.tenant_data.copy()
        del incomplete_data['name']

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

        assert response.status_code == status.HTTP_400_BAD_REQUEST

        data = response.json()
        assert 'name' in data.get('errors', {})

    def test_create_tenant_invalid_email(self):
        """Test tenant creation with invalid email format."""
        invalid_data = self.tenant_data.copy()
        invalid_data['email'] = 'invalid-email'

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

        assert response.status_code == status.HTTP_400_BAD_REQUEST

    def test_create_tenant_invalid_business_type(self):
        """Test tenant creation with invalid business type."""
        invalid_data = self.tenant_data.copy()
        invalid_data['business_type'] = 'INVALID_TYPE'

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

        assert response.status_code == status.HTTP_400_BAD_REQUEST

    def test_create_tenant_duplicate_email(self):
        """Test tenant creation with duplicate email."""
        # First request should succeed (if implemented)
        first_response = self.client.post(
            self.tenants_url,
            data=json.dumps(self.tenant_data),
            content_type='application/json',
            **self.admin_auth
        )

        if first_response.status_code == status.HTTP_201_CREATED:
            # Second request with same email should fail
            second_response = self.client.post(
                self.tenants_url,
                data=json.dumps(self.tenant_data),
                content_type='application/json',
                **self.admin_auth
            )
            assert second_response.status_code == status.HTTP_400_BAD_REQUEST

    def test_create_tenant_invalid_address(self):
        """Test tenant creation with invalid address format."""
        invalid_data = self.tenant_data.copy()
        invalid_data['address'] = 'invalid address format'

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

        assert response.status_code == status.HTTP_400_BAD_REQUEST

    def test_create_tenant_malformed_address(self):
        """Test tenant creation with malformed address JSON."""
        invalid_data = self.tenant_data.copy()
        invalid_data['address'] = {'street': '123 Street'}  # Missing required fields

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

        assert response.status_code == status.HTTP_400_BAD_REQUEST