"""
Quick Test Script for Response Utilities

Run this to verify the new response format utilities work correctly.
Usage: python test_response_utilities.py
"""

import os
import sys
import django

# Setup Django
sys.path.insert(0, os.path.dirname(__file__))
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'igny8_core.settings')
django.setup()

from rest_framework import status
from igny8_core.api.response import success_response, error_response, paginated_response


def test_success_response():
    """Test success_response function"""
    print("\n" + "="*60)
    print("TEST 1: success_response()")
    print("="*60)
    
    # Test with data only
    response = success_response(data={"id": 1, "name": "Test"})
    data = response.data
    print(f"✓ Status Code: {response.status_code}")
    print(f"✓ Success: {data.get('success')}")
    print(f"✓ Data: {data.get('data')}")
    assert data['success'] == True, "Success should be True"
    assert 'data' in data, "Should have data field"
    print("✅ Test 1.1: success_response with data - PASSED")
    
    # Test with data and message
    response = success_response(
        data={"id": 2, "name": "Test 2"},
        message="Resource created successfully"
    )
    data = response.data
    assert data['success'] == True, "Success should be True"
    assert data.get('message') == "Resource created successfully", "Should have message"
    print("✅ Test 1.2: success_response with data and message - PASSED")
    
    # Test with custom status code
    response = success_response(
        data={"id": 3},
        status_code=status.HTTP_201_CREATED
    )
    assert response.status_code == 201, "Status should be 201"
    print("✅ Test 1.3: success_response with custom status - PASSED")


def test_error_response():
    """Test error_response function"""
    print("\n" + "="*60)
    print("TEST 2: error_response()")
    print("="*60)
    
    # Test with error only
    response = error_response(error="Something went wrong")
    data = response.data
    print(f"✓ Status Code: {response.status_code}")
    print(f"✓ Success: {data.get('success')}")
    print(f"✓ Error: {data.get('error')}")
    assert data['success'] == False, "Success should be False"
    assert data['error'] == "Something went wrong", "Should have error message"
    print("✅ Test 2.1: error_response with error only - PASSED")
    
    # Test with error and errors dict
    response = error_response(
        error="Validation failed",
        errors={"email": ["Invalid email format"], "password": ["Too short"]}
    )
    data = response.data
    assert data['success'] == False, "Success should be False"
    assert 'errors' in data, "Should have errors field"
    assert len(data['errors']) == 2, "Should have 2 field errors"
    print("✅ Test 2.2: error_response with errors dict - PASSED")
    
    # Test with custom status code
    response = error_response(
        error="Not found",
        status_code=status.HTTP_404_NOT_FOUND
    )
    assert response.status_code == 404, "Status should be 404"
    print("✅ Test 2.3: error_response with custom status - PASSED")


def test_paginated_response():
    """Test paginated_response function"""
    print("\n" + "="*60)
    print("TEST 3: paginated_response()")
    print("="*60)
    
    paginated_data = {
        "count": 100,
        "next": "http://api.example.com/endpoint/?page=2",
        "previous": None,
        "results": [{"id": 1}, {"id": 2}]
    }
    
    response = paginated_response(paginated_data)
    data = response.data
    print(f"✓ Status Code: {response.status_code}")
    print(f"✓ Success: {data.get('success')}")
    print(f"✓ Count: {data.get('count')}")
    print(f"✓ Results: {len(data.get('results', []))} items")
    assert data['success'] == True, "Success should be True"
    assert data['count'] == 100, "Should have count"
    assert 'results' in data, "Should have results"
    assert len(data['results']) == 2, "Should have 2 results"
    print("✅ Test 3.1: paginated_response - PASSED")
    
    # Test with message
    response = paginated_response(paginated_data, message="Keywords retrieved")
    data = response.data
    assert data.get('message') == "Keywords retrieved", "Should have message"
    print("✅ Test 3.2: paginated_response with message - PASSED")


def test_imports():
    """Test that imports work correctly"""
    print("\n" + "="*60)
    print("TEST 4: Import Verification")
    print("="*60)
    
    try:
        from igny8_core.api import success_response, error_response, paginated_response
        print("✅ All imports successful")
        return True
    except ImportError as e:
        print(f"❌ Import failed: {e}")
        return False


def main():
    """Run all tests"""
    print("\n" + "="*60)
    print("RESPONSE UTILITIES TEST SUITE")
    print("="*60)
    print("Testing unified response format utilities")
    print("="*60)
    
    try:
        # Test imports
        if not test_imports():
            print("\n❌ Import test failed. Exiting.")
            return
        
        # Test functions
        test_success_response()
        test_error_response()
        test_paginated_response()
        
        print("\n" + "="*60)
        print("✅ ALL TESTS PASSED!")
        print("="*60)
        print("\nNext steps:")
        print("1. Run Django unit tests: python manage.py test igny8_core.api.tests.test_response")
        print("2. Test /api/ping/ endpoint (if server is running)")
        print("3. Merge PR when ready")
        
    except AssertionError as e:
        print(f"\n❌ Test failed: {e}")
        sys.exit(1)
    except Exception as e:
        print(f"\n❌ Unexpected error: {e}")
        import traceback
        traceback.print_exc()
        sys.exit(1)


if __name__ == '__main__':
    main()