"""
GraphQL Schema Generator Agent

Generates GraphQL schemas, resolvers, and types from data models
or specifications.
"""

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


class GraphQLSchemaGeneratorAgent(BaseAgent):
    """
    Generates GraphQL schemas and resolvers.

    Features:
    - Type definitions
    - Query definitions
    - Mutation definitions
    - Subscription definitions
    - Resolver generation
    - Input type generation
    """

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

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

        Args:
            params: {
                'language': 'javascript|typescript|python|go',
                'framework': 'apollo|graphene|gqlgen|type-graphql',
                'data_models': List[Dict],  # Data models to generate from
                'options': {
                    'generate_resolvers': bool,
                    'generate_subscriptions': bool,
                    'add_pagination': bool,
                    'add_filtering': bool,
                    'add_authentication': bool
                }
            }

        Returns:
            {
                'status': 'success|failed',
                'schema_file': str,
                'types_generated': List[Dict],
                'queries_generated': List[str],
                'mutations_generated': List[str],
                'resolvers_generated': List[str]
            }
        """
        language = params.get('language', 'typescript')
        framework = params.get('framework', 'apollo')
        data_models = params.get('data_models', [])
        options = params.get('options', {})

        self.logger.info(
            f"Generating GraphQL schema with {framework}"
        )

        # Mock GraphQL schema generation
        types_generated = [
            {
                'name': 'User',
                'fields': [
                    {'name': 'id', 'type': 'ID!'},
                    {'name': 'email', 'type': 'String!'},
                    {'name': 'username', 'type': 'String!'},
                    {'name': 'firstName', 'type': 'String'},
                    {'name': 'lastName', 'type': 'String'},
                    {'name': 'orders', 'type': '[Order!]'},
                    {'name': 'createdAt', 'type': 'DateTime!'}
                ]
            },
            {
                'name': 'Product',
                'fields': [
                    {'name': 'id', 'type': 'ID!'},
                    {'name': 'name', 'type': 'String!'},
                    {'name': 'description', 'type': 'String'},
                    {'name': 'price', 'type': 'Float!'},
                    {'name': 'stock', 'type': 'Int!'},
                    {'name': 'category', 'type': 'Category'}
                ]
            },
            {
                'name': 'Order',
                'fields': [
                    {'name': 'id', 'type': 'ID!'},
                    {'name': 'user', 'type': 'User!'},
                    {'name': 'items', 'type': '[OrderItem!]!'},
                    {'name': 'totalAmount', 'type': 'Float!'},
                    {'name': 'status', 'type': 'OrderStatus!'},
                    {'name': 'createdAt', 'type': 'DateTime!'}
                ]
            }
        ]

        queries = [
            'user(id: ID!): User',
            'users(limit: Int, offset: Int, filter: UserFilter): [User!]!',
            'product(id: ID!): Product',
            'products(limit: Int, offset: Int, filter: ProductFilter): [Product!]!',
            'order(id: ID!): Order',
            'orders(userId: ID, status: OrderStatus): [Order!]!'
        ]

        mutations = [
            'createUser(input: CreateUserInput!): User!',
            'updateUser(id: ID!, input: UpdateUserInput!): User!',
            'deleteUser(id: ID!): Boolean!',
            'createProduct(input: CreateProductInput!): Product!',
            'updateProduct(id: ID!, input: UpdateProductInput!): Product!',
            'createOrder(input: CreateOrderInput!): Order!',
            'updateOrderStatus(id: ID!, status: OrderStatus!): Order!'
        ]

        subscriptions = [
            'orderCreated(userId: ID): Order!',
            'orderStatusChanged(orderId: ID!): Order!',
            'productStockChanged(productId: ID!): Product!'
        ]

        resolvers = [
            'Query.user',
            'Query.users',
            'Query.product',
            'Query.products',
            'Mutation.createUser',
            'Mutation.updateUser',
            'Mutation.createOrder',
            'User.orders',
            'Order.user',
            'Order.items',
            'Product.category'
        ]

        return {
            'status': 'success',
            'language': language,
            'framework': framework,
            'schema_file': 'schema.graphql',
            'types_generated': types_generated,
            'total_types': len(types_generated),
            'queries_generated': queries,
            'mutations_generated': mutations,
            'subscriptions_generated': subscriptions if options.get('generate_subscriptions') else [],
            'resolvers_generated': resolvers if options.get('generate_resolvers') else [],
            'input_types': [
                'CreateUserInput',
                'UpdateUserInput',
                'CreateProductInput',
                'UpdateProductInput',
                'CreateOrderInput',
                'UserFilter',
                'ProductFilter'
            ],
            'enums': [
                'OrderStatus',
                'UserRole',
                'ProductCategory'
            ],
            'interfaces': [
                'Node',
                'Timestamped'
            ],
            'files_generated': [
                'schema.graphql',
                'resolvers/user.ts',
                'resolvers/product.ts',
                'resolvers/order.ts',
                'types/generated.ts'
            ],
            'features': {
                'pagination': options.get('add_pagination', True),
                'filtering': options.get('add_filtering', True),
                'authentication': options.get('add_authentication', True),
                'subscriptions': options.get('generate_subscriptions', False),
                'data_loaders': True,
                'error_handling': True
            },
            'next_steps': [
                'Implement resolver logic',
                'Add authentication middleware',
                'Configure data loaders',
                'Add field-level permissions',
                'Set up GraphQL playground'
            ]
        }

    def validate_params(self, params: Dict[str, Any]) -> bool:
        """Validate GraphQL schema generation parameters."""
        valid_languages = ['javascript', 'typescript', 'python', 'go']
        language = params.get('language', 'typescript')

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

        valid_frameworks = ['apollo', 'graphene', 'gqlgen', 'type-graphql']
        framework = params.get('framework', 'apollo')

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

        return True
