#!/usr/bin/env python3
"""
Simple test to verify ConfigurationLoader integration works correctly
"""

import os
import tempfile
from pathlib import Path
from configuration_loader import ConfigurationLoader, ConfigurationError, EnvironmentVariableError

def test_basic_environment_variable_expansion():
    """Test basic environment variable expansion functionality"""
    
    # Set up test environment variables
    os.environ['TEST_API_KEY'] = 'test-key-123'
    os.environ['TEST_URL'] = 'https://test.example.com'
    
    # Create test configuration
    test_config = {
        'api': {
            'key': '${TEST_API_KEY}',
            'url': '${TEST_URL}',
            'timeout': '${TEST_TIMEOUT:-30}',  # With default value
            'retries': 3  # No environment variable
        },
        'nested': {
            'values': ['${TEST_API_KEY}', 'static-value', '${TEST_URL}']
        }
    }
    
    # Test expansion
    loader = ConfigurationLoader()
    expanded = loader.expand_environment_variables(test_config)
    
    # Verify results
    assert expanded['api']['key'] == 'test-key-123'
    assert expanded['api']['url'] == 'https://test.example.com'
    assert expanded['api']['timeout'] == '30'  # Default value used
    assert expanded['api']['retries'] == 3  # Unchanged
    assert expanded['nested']['values'][0] == 'test-key-123'
    assert expanded['nested']['values'][1] == 'static-value'
    assert expanded['nested']['values'][2] == 'https://test.example.com'
    
    print("✓ Basic environment variable expansion test passed")

def test_missing_required_variable():
    """Test error handling for missing required environment variables"""
    
    # Ensure variable is not set
    if 'MISSING_VAR' in os.environ:
        del os.environ['MISSING_VAR']
    
    test_config = {
        'api': {
            'key': '${MISSING_VAR}'
        }
    }
    
    loader = ConfigurationLoader()
    
    try:
        loader.expand_environment_variables(test_config)
        assert False, "Should have raised EnvironmentVariableError"
    except EnvironmentVariableError as e:
        assert 'MISSING_VAR' in str(e)
        print("✓ Missing required variable error test passed")

def test_config_file_loading():
    """Test loading configuration from YAML file"""
    
    # Set up test environment variable
    os.environ['TEST_CLAUDE_KEY'] = 'sk-ant-test-key'
    
    # Create temporary YAML config file
    yaml_content = """
obsidian:
  vault_path: "/tmp/test-vault"
  rest_api:
    url: "https://localhost:27123"
    api_key: "test-obsidian-key"
    verify_ssl: false

claude:
  api_key: "${TEST_CLAUDE_KEY}"
  api_url: "${CLAUDE_URL:-https://api.anthropic.com}"
  model: "claude-3-5-sonnet-20241022"
  max_tokens: 4096
  temperature: 0.7
"""
    
    with tempfile.NamedTemporaryFile(mode='w', suffix='.yaml', delete=False) as f:
        f.write(yaml_content)
        temp_file = f.name
    
    try:
        # Load and expand configuration
        expanded_config = ConfigurationLoader.load_config(temp_file)
        
        # Verify expansion worked
        assert expanded_config['claude']['api_key'] == 'sk-ant-test-key'
        assert expanded_config['claude']['api_url'] == 'https://api.anthropic.com'  # Default value
        assert expanded_config['obsidian']['rest_api']['api_key'] == 'test-obsidian-key'
        
        print("✓ Config file loading test passed")
        
    finally:
        # Clean up
        Path(temp_file).unlink()

def test_validation_methods():
    """Test validation helper methods"""
    
    # Set up test environment
    os.environ['PRESENT_VAR'] = 'present'
    if 'MISSING_VAR' in os.environ:
        del os.environ['MISSING_VAR']
    
    test_config = {
        'present': '${PRESENT_VAR}',
        'missing': '${MISSING_VAR}',
        'with_default': '${MISSING_VAR:-default_value}'
    }
    
    loader = ConfigurationLoader()
    
    # Test validation
    missing_vars = loader.validate_environment_variables(test_config)
    assert len(missing_vars) == 1
    assert 'MISSING_VAR' in missing_vars[0]
    
    # Test environment variable references
    env_refs = loader.get_environment_variable_references(test_config)
    assert 'PRESENT_VAR' in env_refs
    assert 'MISSING_VAR' in env_refs
    assert len(env_refs['MISSING_VAR']) == 2  # Used in 'missing' and 'with_default'
    
    print("✓ Validation methods test passed")

if __name__ == '__main__':
    print("Testing ConfigurationLoader integration...")
    
    try:
        test_basic_environment_variable_expansion()
        test_missing_required_variable()
        test_config_file_loading()
        test_validation_methods()
        
        print("\n✅ All tests passed! ConfigurationLoader integration is working correctly.")
        
    except Exception as e:
        print(f"\n❌ Test failed: {e}")
        import traceback
        traceback.print_exc()
        exit(1)
    
    finally:
        # Clean up test environment variables
        for var in ['TEST_API_KEY', 'TEST_URL', 'TEST_CLAUDE_KEY', 'PRESENT_VAR']:
            if var in os.environ:
                del os.environ[var]