/**
 * Agentic QE v3 - Contract Validator Service
 * Implements IContractValidationService for API contract validation (Pact-style)
 */
import { Result } from '../../../shared/types/index.js';
import type { MemoryBackend } from '../../../kernel/interfaces.js';
import type { IContractValidationService, ApiContract, SchemaDefinition, ValidationReport, SchemaValidationResult, OpenAPIValidationResult } from '../interfaces.js';
/**
 * Configuration for the contract validator
 */
export interface ContractValidatorConfig {
    strictMode: boolean;
    validateExamples: boolean;
    maxSchemaDepth: number;
    cacheValidations: boolean;
}
/**
 * Contract Validation Service Implementation
 * Validates API contracts against schemas and specifications
 */
export declare class ContractValidatorService implements IContractValidationService {
    private readonly memory;
    private readonly config;
    private readonly validationCache;
    constructor(memory: MemoryBackend, config?: Partial<ContractValidatorConfig>);
    /**
     * Validate contract structure
     */
    validateContract(contract: ApiContract): Promise<Result<ValidationReport>>;
    /**
     * Validate request against schema
     */
    validateRequest(request: unknown, schema: SchemaDefinition): Promise<Result<SchemaValidationResult>>;
    /**
     * Validate response against schema
     */
    validateResponse(response: unknown, schema: SchemaDefinition): Promise<Result<SchemaValidationResult>>;
    /**
     * Validate OpenAPI/Swagger specification
     */
    validateOpenAPI(spec: string): Promise<Result<OpenAPIValidationResult>>;
    private getCacheKey;
    private validateContractStructure;
    private validateServiceInfo;
    private validateEndpoint;
    private validateSchemaDefinition;
    private validateJsonSchemaContent;
    private validateGraphQLSchemaContent;
    private validateProtobufContent;
    private validateAvroContent;
    private validateEndpointExamples;
    private validateAgainstJsonSchema;
    private validateAgainstOpenAPISchema;
    private validateAgainstGraphQLSchema;
    /**
     * Parse GraphQL schema to extract type definitions
     */
    private parseGraphQLSchema;
    /**
     * Parse GraphQL operation (query/mutation/subscription)
     */
    private parseGraphQLOperation;
    /**
     * Parse GraphQL selection set into field list
     */
    private parseGraphQLSelectionSet;
    /**
     * Parse a single GraphQL field
     */
    private parseGraphQLField;
    /**
     * Parse GraphQL arguments
     */
    private parseGraphQLArguments;
    /**
     * Get root type name for operation type
     */
    private getRootTypeForOperation;
    /**
     * Unwrap GraphQL type (remove [], !)
     */
    private unwrapGraphQLType;
    /**
     * Validate nested field selections
     */
    private validateGraphQLSelections;
    /**
     * Validate variable type matches expected GraphQL type
     */
    private validateGraphQLVariableType;
    private basicTypeValidation;
    private validateStringConstraints;
    private validateNumberConstraints;
    private validateArrayConstraints;
    private getJsonType;
    private validateOpenAPI3Structure;
    private validateSwagger2Structure;
    private storeValidationHistory;
}
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