/**
 * HTTP Client Factory - unified HTTP client management
 *
 * Why: Eliminates code duplication in HTTP client creation and management
 * Provides consistent client lifecycle, auth handling, and caching
 */
import { HttpClient } from './interceptors.js';
import type { MetricsCollector } from '../core/metrics.js';
import type { MetricsContextLabels } from '../core/metrics.js';
import type { Profile, AuthInterceptor } from '../types/profile.js';
import type { Logger } from '../core/logger.js';
export interface HttpClientConfig {
    profile: Profile;
    baseUrl: string;
    sessionToken?: string;
    authConfigs?: AuthInterceptor[];
    metricsContext?: MetricsContextLabels;
    logger?: Logger;
}
/**
 * Factory for creating and managing HTTP clients
 * Handles both global and session-specific clients
 */
export declare class HttpClientFactory {
    private globalClient?;
    private sessionClients;
    private metrics;
    /**
     * Create global HTTP client (for stdio transport)
     */
    createGlobalClient(config: HttpClientConfig): HttpClient;
    /**
     * Get or create session-specific HTTP client
     */
    getOrCreateSessionClient(sessionId: string, config: HttpClientConfig): HttpClient;
    /**
     * Get global client (throws if not initialized)
     */
    getGlobalClient(): HttpClient;
    /**
     * Get session client (throws if not exists)
     */
    getSessionClient(sessionId: string): HttpClient;
    /**
     * Cleanup session client
     */
    cleanupSessionClient(sessionId: string): boolean;
    /**
     * Check if global client exists
     */
    hasGlobalClient(): boolean;
    /**
     * Check if session client exists
     */
    hasSessionClient(sessionId: string): boolean;
    setMetricsCollector(metrics: MetricsCollector | null): void;
    /**
     * Get auth token for client creation
     */
    private getAuthToken;
    /**
     * Create interceptor chain for client
     */
    private createInterceptorChain;
    /**
     * Validate client configuration
     */
    validateClientConfig(config: HttpClientConfig): void;
}
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