import type { Node } from 'web-tree-sitter';
import type { DirectivesNode } from './directives.js';
import type { NameNode } from './name.js';
import type { OperationTypeNode } from './operation_type.js';
import type { SelectionSetNode } from './selection_set.js';
import type { VariableDefinitionsNode } from './variable_definitions.js';
const TYPE = 'operation_definition' as const;



// ================================================================
// ================================================================
//
//                           OperationDefinitionNode
//
//        GraphQL operation definition node
//
// ================================================================
// ================================================================


/**
 * Represents a operation definition in the GraphQL AST.
 * 
 * Children:
 *   {@link DirectivesNode}, {@link NameNode}, {@link OperationTypeNode}, {@link SelectionSetNode}, {@link VariableDefinitionsNode}
 * 
 */
export interface OperationDefinitionNode extends Node {
  type: typeof TYPE;
}


// ================================================================
// ================================================================
//
//                           Type Guard
//
// ================================================================
// ================================================================


/**
 * Type guard to check if a node is a {@link OperationDefinitionNode}.
 * 
 * @param node - The node to check
 * @returns True if the node is a {@link OperationDefinitionNode}
 * 
 * @example
 * ```typescript
 * if (isOperationDefinitionNode(node)) {
 *   // TypeScript now knows node is OperationDefinitionNode
 *   console.log(node.type); // 'operation_definition'
 * }
 * ```
 */
export function isOperationDefinitionNode(node: unknown): node is OperationDefinitionNode {
  return (node as any)?.type === TYPE;
}


// ================================================================
// ================================================================
//
//                           Constructor
//
// ================================================================
// ================================================================


/**
 * Creates a new {@link OperationDefinitionNode} with the specified properties.
 * 
 * @param props - The node properties
 * @param props.directives - {@link DirectivesNode}
 * @param props.name - {@link NameNode}
 * @param props.operationtype - {@link OperationTypeNode}
 * @param props.selectionset - {@link SelectionSetNode}
 * @param props.variabledefinitions - {@link VariableDefinitionsNode}
 * @returns A new {@link OperationDefinitionNode}
 * 
 * @example
 * ```typescript
 * const node = OperationDefinitionNode({
 *   // properties...
 * });
 * ```
 */
export function OperationDefinitionNode(props: Omit<OperationDefinitionNode, 'type'>): OperationDefinitionNode {
  return {
    type: TYPE,
    ...props
  };
}