import { ConfigService } from '@nestjs/config';
import type { TypeOrmModuleOptions } from '@nestjs/typeorm';
import session from 'express-session';
import { Params } from 'nestjs-pino';
import { BullRootModuleOptions } from '@nestjs/bull/dist/interfaces/bull-module-options.interface';
import { AxiosProxyConfig } from 'axios';
import { CorsOptions } from '@nestjs/common/interfaces/external/cors-options.interface';
import { PinoEmailTransport } from '../../email-log';
export declare class ApiConfigService {
    private configService;
    static rootPath: string;
    constructor(configService: ConfigService);
    get isDev(): boolean;
    get apiVersion(): string;
    get isProd(): boolean;
    get isSit(): boolean;
    get isUat(): boolean;
    get isTest(): boolean;
    get nodeEnv(): string;
    get fallbackLanguage(): string;
    get typeormConfig(): TypeOrmModuleOptions;
    get documentationEnabled(): boolean;
    get documentationPath(): string;
    get viewsEnabled(): boolean;
    get sessionEnabled(): boolean;
    get corsEnabled(): boolean;
    get corsConfig(): CorsOptions;
    get sessionConfig(): session.SessionOptions;
    get authConfig(): {
        privateKey: string;
        publicKey: string;
        jwtExpirationTime: number;
    };
    get appConfig(): {
        port: string;
    };
    get apiKey(): string;
    get ioRedisConfig(): {
        host: string;
        port: number;
        username: string;
        password: string;
        db: number;
    };
    /**
     * 是否使用Redis，用于health check
     */
    get isRedisEnabled(): boolean;
    get bullConfig(): BullRootModuleOptions;
    get pinoConfig(): Params;
    /**
     * Get Pino multistream configuration with email transport
     * This method provides additional stream for email logging
     * Usage: pass to LoggerModule or use with pino.multistream()
     */
    get pinoEmailStream(): {
        level: string;
        stream: any;
    };
    get axiosProxyConfig(): AxiosProxyConfig | false;
    /**
     * Email log transport configuration
     * Returns null if email logging is disabled
     */
    get emailLogConfig(): {
        enabled: boolean;
        to: string[];
        from: string;
        level: string;
        subjectPrefix: string;
        smtpHost: string;
        smtpPort: number;
        smtpUsername: string;
        smtpPassword: string;
        smtpSecure: boolean;
        smtpIgnoreTLSError: boolean;
        rateLimitMaxEmails: number;
        rateLimitWindowMs: number;
        rateLimitBurstSize: number;
        useHtmlFormat: boolean;
        includeApps: string[];
        excludeApps: string[];
        includeErrors: string[];
        excludeErrors: string[];
    };
    /**
     * Get Pino email transport instance
     * This returns a Pino transport that can be used directly with Pino logger
     * Usage: pino(transport) or add to multistream
     */
    get pinoEmailTransport(): PinoEmailTransport;
    static getRootPath(): string;
    static toBoolean(value: string, defaultValue?: any): boolean;
    static isConfigEnabled(envVarName: string, defaultValue?: boolean): boolean;
    getNumber(key: string, defaultValue?: number): number;
    getBoolean(key: string, defaultValue?: boolean): boolean;
    getString(key: string, defaultValue?: string): string;
    private get;
}