"""
API Generator Agent

Generates API endpoints, schemas, and boilerplate code for REST, GraphQL,
and gRPC APIs.
"""

from typing import Any, Dict, List
from agents.base import BaseAgent


class APIGeneratorAgent(BaseAgent):
    """
    Generates API endpoints and schemas.

    Supports:
    - REST APIs (OpenAPI/Swagger)
    - GraphQL APIs
    - gRPC services
    - WebSocket endpoints
    - API documentation
    - Client SDKs
    """

    def __init__(self):
        super().__init__(
            name='api-generator',
            description='Generate API endpoints and schemas',
            category='engineering',
            version='1.0.0',
            tags=['api', 'rest', 'graphql', 'grpc', 'code-generation']
        )

    async def execute(self, params: Dict[str, Any]) -> Dict[str, Any]:
        """
        Generate API code.

        Args:
            params: {
                'api_type': 'rest|graphql|grpc|websocket',
                'language': 'python|javascript|typescript|go|rust',
                'framework': 'fastapi|express|gin|actix',
                'specification': str,    # API specification/schema
                'options': {
                    'generate_docs': bool,
                    'generate_tests': bool,
                    'generate_client': bool,
                    'authentication': 'jwt|oauth|api-key|none',
                    'versioning': bool,
                    'rate_limiting': bool
                }
            }

        Returns:
            {
                'status': 'success|failed',
                'endpoints_generated': List[Dict],
                'files_generated': List[str],
                'schema_file': str,
                'documentation_url': str,
                'client_sdk': Dict
            }
        """
        api_type = params.get('api_type', 'rest')
        language = params.get('language', 'python')
        framework = params.get('framework', 'fastapi')
        specification = params.get('specification', '')
        options = params.get('options', {})

        self.logger.info(
            f"Generating {api_type.upper()} API with {framework}"
        )

        # Mock API generation
        endpoints = [
            {
                'path': '/api/v1/users',
                'methods': ['GET', 'POST'],
                'description': 'User management endpoints',
                'authentication': True,
                'rate_limit': '100/hour'
            },
            {
                'path': '/api/v1/users/{id}',
                'methods': ['GET', 'PUT', 'DELETE'],
                'description': 'Individual user operations',
                'authentication': True,
                'rate_limit': '100/hour'
            },
            {
                'path': '/api/v1/auth/login',
                'methods': ['POST'],
                'description': 'User authentication',
                'authentication': False,
                'rate_limit': '10/minute'
            },
            {
                'path': '/api/v1/products',
                'methods': ['GET', 'POST'],
                'description': 'Product catalog endpoints',
                'authentication': True,
                'rate_limit': '1000/hour'
            }
        ]

        files_generated = [
            f'api/routes/{framework}_routes.py',
            'api/models/schemas.py',
            'api/models/requests.py',
            'api/models/responses.py',
            'api/middleware/auth.py',
            'api/middleware/rate_limit.py',
            'api/utils/validators.py'
        ]

        if options.get('generate_docs'):
            files_generated.extend([
                'docs/api/openapi.yaml',
                'docs/api/index.html'
            ])

        if options.get('generate_tests'):
            files_generated.extend([
                'tests/api/test_users.py',
                'tests/api/test_auth.py',
                'tests/api/test_products.py'
            ])

        if options.get('generate_client'):
            files_generated.extend([
                'client/sdk.py',
                'client/models.py',
                'client/exceptions.py'
            ])

        return {
            'status': 'success',
            'api_type': api_type,
            'language': language,
            'framework': framework,
            'endpoints_generated': endpoints,
            'total_endpoints': len(endpoints),
            'files_generated': files_generated,
            'schema_file': 'api/openapi.yaml',
            'models_generated': 12,
            'validators_generated': 8,
            'features': {
                'authentication': options.get('authentication', 'jwt'),
                'versioning': options.get('versioning', True),
                'rate_limiting': options.get('rate_limiting', True),
                'cors': True,
                'request_validation': True,
                'response_serialization': True,
                'error_handling': True,
                'logging': True
            },
            'documentation': {
                'openapi_version': '3.0.0',
                'interactive_docs': True,
                'docs_url': '/docs',
                'redoc_url': '/redoc'
            },
            'client_sdk': {
                'language': language,
                'methods_generated': 12,
                'async_support': True,
                'type_hints': True
            } if options.get('generate_client') else None,
            'security_features': [
                'JWT authentication',
                'Rate limiting',
                'Input validation',
                'CORS configuration',
                'SQL injection prevention',
                'XSS protection'
            ],
            'next_steps': [
                'Review generated endpoints',
                'Implement business logic',
                'Add database integration',
                'Configure authentication',
                'Deploy API server'
            ]
        }

    def validate_params(self, params: Dict[str, Any]) -> bool:
        """Validate API generation parameters."""
        valid_api_types = ['rest', 'graphql', 'grpc', 'websocket']
        api_type = params.get('api_type', 'rest')

        if api_type not in valid_api_types:
            self.logger.error(f"Invalid API type: {api_type}")
            return False

        valid_languages = ['python', 'javascript', 'typescript', 'go', 'rust']
        language = params.get('language', 'python')

        if language not in valid_languages:
            self.logger.error(f"Unsupported language: {language}")
            return False

        return True
