/**
 * Configuration management service
 */
import type { Configuration, Model, ModelConfig } from '../types/index.js';
/**
 * Initialize a new configuration
 */
export declare function createDefaultConfig(apiKey: string): Promise<Configuration>;
/**
 * Load configuration from disk or return null if not found
 */
export declare function getConfig(): Promise<Configuration | null>;
/**
 * Save configuration to disk
 */
export declare function setConfig(config: Configuration): Promise<void>;
/**
 * Update API key in configuration
 */
export declare function updateApiKey(config: Configuration, apiKey: string): Promise<Configuration>;
/**
 * Update enabled models in configuration
 */
export declare function updateEnabledModels(config: Configuration, modelConfigs: ModelConfig[]): Promise<Configuration>;
/**
 * Set default model
 */
export declare function setDefaultModel(config: Configuration, modelId: string): Promise<Configuration>;
/**
 * Get list of enabled models
 */
export declare function getEnabledModels(config: Configuration): ModelConfig[];
/**
 * Get current/default model
 */
export declare function getCurrentModel(config: Configuration): ModelConfig | null;
/**
 * Refresh model cache from API
 */
export declare function refreshModelCache(config: Configuration): Promise<Configuration>;
/**
 * Check if model cache is expired
 */
export declare function isModelCacheExpired(config: Configuration): boolean;
/**
 * Get models from cache or refresh if expired
 */
export declare function getModels(config: Configuration): Promise<Model[]>;
/**
 * Update last used timestamp for a model
 */
export declare function updateModelLastUsed(config: Configuration, modelId: string): Promise<Configuration>;
/**
 * Migrate configuration from old version to current
 */
export declare function migrateConfig(oldConfig: Configuration): Configuration;
/**
 * Ensure configuration directory exists
 */
export declare function ensureConfigDir(): Promise<void>;
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