/**
 * Configuration File Loader (D-005)
 *
 * Loads configuration from .llmbrowserrc or .llmbrowserrc.json files.
 * Configuration precedence: Environment Variables > Config File > Defaults
 *
 * Search paths (in order):
 * 1. Current working directory
 * 2. Home directory (~/.llmbrowserrc)
 * 3. Package root (for npm package users)
 *
 * Supported file names:
 * - .llmbrowserrc (JSON format)
 * - .llmbrowserrc.json
 * - llmbrowserrc.json
 * - .unbrowserrc (alias)
 * - .unbrowserrc.json (alias)
 *
 * @example
 * // .llmbrowserrc in project root
 * {
 *   "log": {
 *     "level": "debug",
 *     "prettyPrint": true
 *   },
 *   "browserProvider": {
 *     "timeout": 60000
 *   }
 * }
 */
import { z } from 'zod';
import { type LogConfig, type DatabaseConfig, type BrowserProviderConfig, type RedisConfig, type ProxyConfig, type ApiServerConfig, type StripeConfig, type McpServerConfig, type SdkConfig } from './config-schemas.js';
/**
 * Schema for configuration file contents.
 * All fields are optional - missing fields use defaults or env vars.
 */
export declare const configFileSchema: z.ZodObject<{
    log: z.ZodOptional<z.ZodObject<{
        level: z.ZodOptional<z.ZodEnum<{
            error: "error";
            info: "info";
            warn: "warn";
            debug: "debug";
            silent: "silent";
        }>>;
        prettyPrint: z.ZodOptional<z.ZodBoolean>;
    }, z.core.$strip>>;
    database: z.ZodOptional<z.ZodObject<{
        databaseUrl: z.ZodOptional<z.ZodString>;
        sqlitePath: z.ZodOptional<z.ZodString>;
        vectorDbPath: z.ZodOptional<z.ZodString>;
        poolSize: z.ZodOptional<z.ZodNumber>;
        debugPrisma: z.ZodOptional<z.ZodBoolean>;
    }, z.core.$strip>>;
    browserProvider: z.ZodOptional<z.ZodObject<{
        type: z.ZodOptional<z.ZodEnum<{
            custom: "custom";
            local: "local";
            browserless: "browserless";
            brightdata: "brightdata";
        }>>;
        browserlessToken: z.ZodOptional<z.ZodString>;
        browserlessUrl: z.ZodOptional<z.ZodString>;
        brightdataAuth: z.ZodOptional<z.ZodString>;
        brightdataZone: z.ZodOptional<z.ZodEnum<{
            scraping_browser: "scraping_browser";
            residential: "residential";
            unblocker: "unblocker";
            datacenter: "datacenter";
            isp: "isp";
        }>>;
        brightdataCountry: z.ZodOptional<z.ZodString>;
        customEndpoint: z.ZodOptional<z.ZodString>;
        timeout: z.ZodOptional<z.ZodNumber>;
    }, z.core.$strip>>;
    redis: z.ZodOptional<z.ZodObject<{
        url: z.ZodOptional<z.ZodString>;
        host: z.ZodOptional<z.ZodString>;
        port: z.ZodOptional<z.ZodNumber>;
        password: z.ZodOptional<z.ZodString>;
        db: z.ZodOptional<z.ZodNumber>;
        keyPrefix: z.ZodOptional<z.ZodString>;
        connectTimeout: z.ZodOptional<z.ZodNumber>;
        maxRetriesPerRequest: z.ZodOptional<z.ZodNumber>;
        enableOfflineQueue: z.ZodOptional<z.ZodBoolean>;
    }, z.core.$strip>>;
    proxy: z.ZodOptional<z.ZodObject<{
        datacenterUrls: z.ZodOptional<z.ZodArray<z.ZodString>>;
        ispUrls: z.ZodOptional<z.ZodArray<z.ZodString>>;
        brightdataAuth: z.ZodOptional<z.ZodString>;
        brightdataZone: z.ZodOptional<z.ZodEnum<{
            residential: "residential";
            unblocker: "unblocker";
            datacenter: "datacenter";
            isp: "isp";
        }>>;
        brightdataCountry: z.ZodOptional<z.ZodString>;
        brightdataCountries: z.ZodOptional<z.ZodArray<z.ZodString>>;
        brightdataSessionRotation: z.ZodOptional<z.ZodBoolean>;
        brightdataPort: z.ZodOptional<z.ZodNumber>;
        healthWindow: z.ZodOptional<z.ZodNumber>;
        cooldownMinutes: z.ZodOptional<z.ZodNumber>;
        blockThreshold: z.ZodOptional<z.ZodNumber>;
        riskCacheMinutes: z.ZodOptional<z.ZodNumber>;
        enableRiskLearning: z.ZodOptional<z.ZodBoolean>;
    }, z.core.$strip>>;
    apiServer: z.ZodOptional<z.ZodObject<{
        nodeEnv: z.ZodOptional<z.ZodEnum<{
            test: "test";
            development: "development";
            production: "production";
        }>>;
        port: z.ZodOptional<z.ZodNumber>;
        corsOrigins: z.ZodOptional<z.ZodArray<z.ZodString>>;
    }, z.core.$strip>>;
    stripe: z.ZodOptional<z.ZodObject<{
        secretKey: z.ZodOptional<z.ZodString>;
        webhookSecret: z.ZodOptional<z.ZodString>;
        priceId: z.ZodOptional<z.ZodString>;
        meterEventName: z.ZodOptional<z.ZodString>;
    }, z.core.$strip>>;
    mcpServer: z.ZodOptional<z.ZodObject<{
        debugMode: z.ZodOptional<z.ZodBoolean>;
        adminMode: z.ZodOptional<z.ZodBoolean>;
        tenantId: z.ZodOptional<z.ZodString>;
    }, z.core.$strip>>;
    sdk: z.ZodOptional<z.ZodObject<{
        sessionsDir: z.ZodOptional<z.ZodString>;
        learningEnginePath: z.ZodOptional<z.ZodString>;
        disableProceduralMemory: z.ZodOptional<z.ZodBoolean>;
        disableLearning: z.ZodOptional<z.ZodBoolean>;
    }, z.core.$strip>>;
}, z.core.$strict>;
export type ConfigFile = z.infer<typeof configFileSchema>;
/**
 * Get the loaded config file (cached after first load).
 */
export declare function getConfigFile(): ConfigFile;
/**
 * Clear the config file cache.
 * Useful for testing or reloading configuration.
 */
export declare function clearConfigFileCache(): void;
/**
 * Get merged log configuration.
 * Config file values are used unless overridden by environment variables.
 */
export declare function getMergedLogConfig(): LogConfig;
/**
 * Get merged database configuration.
 */
export declare function getMergedDatabaseConfig(): DatabaseConfig;
/**
 * Get merged browser provider configuration.
 */
export declare function getMergedBrowserProviderConfig(): BrowserProviderConfig;
/**
 * Get merged Redis configuration.
 */
export declare function getMergedRedisConfig(): RedisConfig;
/**
 * Get merged proxy configuration.
 */
export declare function getMergedProxyConfig(): ProxyConfig;
/**
 * Get merged API server configuration.
 */
export declare function getMergedApiServerConfig(): ApiServerConfig;
/**
 * Get merged Stripe configuration.
 */
export declare function getMergedStripeConfig(): StripeConfig;
/**
 * Get merged MCP server configuration.
 */
export declare function getMergedMcpServerConfig(): McpServerConfig;
/**
 * Get merged SDK configuration.
 */
export declare function getMergedSdkConfig(): SdkConfig;
/**
 * Get the path to the loaded config file, if any.
 * Uses cached path to avoid redundant filesystem scans.
 */
export declare function getConfigFilePath(): string | null;
/**
 * Check if a config file exists.
 * Uses cached result to avoid redundant filesystem scans.
 */
export declare function hasConfigFile(): boolean;
/**
 * Generate a sample .llmbrowserrc file with all available options.
 */
export declare function generateSampleConfig(): string;
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