/**
 * Config Manager - Manages MCP server configuration
 *
 * This module handles configuration loading, validation, and hot-reloading
 */
import { Logger } from "../types.js";
export interface ConfigSchema {
    server: {
        port?: number;
        timeout?: number;
        maxConnections?: number;
        enableMetrics?: boolean;
    };
    tools: {
        enabledTools?: string[];
        toolTimeout?: number;
        maxConcurrentTools?: number;
        cacheResults?: boolean;
    };
    security: {
        enableSandbox?: boolean;
        allowedOrigins?: string[];
        rateLimiting?: {
            requestsPerMinute?: number;
            burstLimit?: number;
        };
    };
    logging: {
        level?: "debug" | "info" | "warn" | "error";
        enableFileLogging?: boolean;
        logFile?: string;
    };
    [key: string]: unknown;
}
export interface ConfigManagerConfig {
    configPath?: string;
    enableHotReload?: boolean;
    validationStrict?: boolean;
}
export declare class ConfigManager {
    private config;
    private logger;
    private configPath;
    private configWatcher?;
    private configChangeListeners;
    constructor(logger: Logger, options?: ConfigManagerConfig);
    /**
     * Load configuration from file
     */
    loadConfig(): Promise<ConfigSchema>;
    /**
     * Save current configuration to file
     */
    saveConfig(): Promise<void>;
    /**
     * Get current configuration
     */
    getConfig(): ConfigSchema;
    /**
     * Update configuration
     */
    updateConfig(updates: Partial<ConfigSchema>): void;
    /**
     * Get a specific configuration value
     */
    getValue<T>(path: string): T | undefined;
    /**
     * Set a specific configuration value
     */
    setValue(path: string, value: unknown): void;
    /**
     * Add configuration change listener
     */
    onConfigChange(listener: (config: ConfigSchema) => void): void;
    /**
     * Remove configuration change listener
     */
    removeConfigChangeListener(listener: (config: ConfigSchema) => void): void;
    /**
     * Enable hot reload of configuration
     */
    private enableHotReload;
    /**
     * Get default configuration
     */
    private getDefaultConfig;
    /**
     * Get default configuration file path
     */
    private getDefaultConfigPath;
    /**
     * Merge configuration with defaults
     */
    private mergeWithDefaults;
    /**
     * Deep merge objects
     */
    private deepMerge;
    /**
     * Validate configuration
     */
    private validateConfig;
    /**
     * Notify listeners of configuration changes
     */
    private notifyConfigChange;
    /**
     * Cleanup resources
     */
    destroy(): void;
}
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