import { EventEmitter } from 'events';
import { TokenManager } from './TokenManager';
import { Database } from './Database';
import { Handler } from './Handler';
import { IConfig } from './IConfig';
import { Command } from 'commander';
import { IAuthTokenData } from '@arashi/token';
import { BaseLogger } from '@arashi/logger';
export interface IStormCLIArgs {
    bind?: string;
    port?: number;
    authentication_header?: string;
    configFile?: string;
    localConfigFile?: string;
    custom: Record<string, any>;
    shard?: number;
}
/**
 * Main entry point for the Application. Should be extended and have the abstract methods implemented.
 */
export declare abstract class Application<TConfig extends IConfig = IConfig, TAuthToken extends IAuthTokenData = IAuthTokenData, TDBConfig = any, TDBConnectionAPI = any> extends EventEmitter {
    private $logger;
    private $name;
    /**
     * Path to the config directory.
     * This is used as a fallback and it will be expected that
     * bt-config.json and bt-local-config.json are found.
     */
    private $configDir;
    /**
     * Path to a bt-config.json file
     */
    private $configPath;
    /**
     * Path to a bt-local-config.json file
     */
    private $localConfigPath;
    private $config;
    private $tokenManager;
    private $server;
    private $db;
    private $socket;
    private $program;
    private $promServer;
    private $usingDeprecatedConfigPath;
    /**
     *
     * @param name The application name
     * @param configPath @deprecated The directory where bt-config.json and bt-local-config.json can be found. Defaults to current working directory.
     */
    constructor(name: string, configPath?: string);
    start(): Promise<void>;
    private $initPrometheus;
    /**
     * Default algorithm is to take main port, and add 595 to it.
     * Still -- it is better to explicitly set the prometheus port.
     *
     * @param mainPort
     * @returns
     */
    getDefaultPortForPrometheus(): number;
    private $load;
    protected _initialize(config: TConfig): Promise<void>;
    protected _createLogger(config: TConfig): BaseLogger;
    protected _initLogger(config: TConfig): Promise<BaseLogger>;
    private $connectCW;
    private $validateCWConfig;
    getLogger(): BaseLogger;
    getPort(): number;
    getVersion(): string;
    protected _getVersion(): string;
    private $getVersionString;
    private $buildArgOptions;
    getShard(): number;
    isPrometheusEnabled(): boolean;
    protected _buildArgOptions(program: Command): void;
    getProgram(): Command;
    /**
     * Override this method to map CLI args to customConfig
     * @param args
     */
    getConfigFromCLIArgs(args: any): Record<string, any>;
    /**
     * The maximum size limit for incoming requests that this service needs to handle.
     */
    getRequestSizeLimit(): number;
    private $attachHandlers;
    /**
     *
     * @param path The URL API path. E.g. /api/myService/myCommand/
     * @param Handler
     */
    attachHandler(path: string, handler: Handler): void;
    attachHandlerInstance(path: string, handler: Handler): void;
    close(): Promise<void>;
    protected _closeDatabase(): Promise<void>;
    protected _closeSocket(): Promise<void>;
    /**
     * Subclasses are expected to attach the API handlers for their service. This will be invoked during application startup.
     * @returns Promise<void>
     */
    protected abstract _attachHandlers(): Promise<void>;
    /**
     * @deprecated Supply the configs via --config and --local-config arguments
     *
     * @param path The directory path that contains bt-config.json and bt-local-config.json
     */
    loadConfig(path: string): Promise<TConfig>;
    private $loadConfig;
    getConfigFilePath(): string;
    getLocalConfigFilePath(): string;
    private $getLocalConfigFilePath;
    private $getConfigFilePath;
    /**
     * @returns the application name
     */
    getName(): string;
    private $getLogger;
    /**
     * @returns the config object.
     */
    getConfig(): TConfig;
    /**
     * @returns true if the Application should bind to an IP address
     */
    shouldListen(): boolean;
    /**
     * Invoked once the config has been loaded and ready to be used.
     *
     * @param config The config object (as defined in bt-config.json/bt-local-config.json)
     */
    protected _onConfigLoad(config: TConfig): void;
    /**
     * Sets the TokenManager to be used for authentication.
     * @param tokenManager
     */
    setTokenManager(tokenManager: TokenManager<TAuthToken>): void;
    /**
     * @returns the token manager
     */
    getTokenManager(): TokenManager<TAuthToken>;
    /**
     * @returns the database pool. This will need to be casted based on your preferred database dialect.
     */
    getDB(): Database<TDBConfig, TDBConnectionAPI>;
    /**
     * @returns command line arguments
     */
    getCmdLineArgs(): IStormCLIArgs;
    /**
     * Subclasses are expected to override this to configure their database setup, if the service uses a database.
     * @param config The bt-config object
     */
    protected _initDB(config: TConfig): Promise<Database<TDBConfig, TDBConnectionAPI>>;
    protected _onBeforeReadyAsync(): Promise<void>;
    /**
     * Invoked when the application is considered ready for operation.
     */
    protected _onReady(): void;
}