import { APIGatewayEvent, APIGatewayEventRequestContext, AuthResponseContext } from 'aws-lambda';
import { EpsilonLoggerConfig } from '../config/epsilon-logger-config';
import { LoggerLevelName } from '@bitblit/ratchet/common';
import { BasicAuthToken } from './auth/basic-auth-token';
/**
 * Endpoints about the api itself
 */
export declare class EventUtil {
    private constructor();
    static extractStage(event: APIGatewayEvent): string;
    static extractHostHeader(event: APIGatewayEvent): string;
    static extractProtocol(event: APIGatewayEvent): string;
    static extractApiGatewayStage(event: APIGatewayEvent): string;
    static extractRequestContext(event: APIGatewayEvent): APIGatewayEventRequestContext;
    static extractAuthorizer(event: APIGatewayEvent): AuthResponseContext;
    static ipAddressChain(event: APIGatewayEvent): string[];
    static ipAddress(event: APIGatewayEvent): string;
    static extractFullPath(event: APIGatewayEvent, overrideProtocol?: string): string;
    static extractFullPrefix(event: APIGatewayEvent, overrideProtocol?: string): string;
    static jsonBodyToObject(event: APIGatewayEvent): any;
    static calcLogLevelViaEventOrEnvParam(curLevel: LoggerLevelName, event: APIGatewayEvent, rConfig: EpsilonLoggerConfig): LoggerLevelName;
    /**
     * This is a weird function - sometimes your customers will not decode their query params and it
     * results in query params that look like 'amp;SOMETHING' instead of 'SOMETHING'.  This function
     * looks for params that look like that, and strips the amp; from them.  If you have any
     * params you are expecting that have 'amp;' in front of them, DON'T use this function.
     *
     * Also, you are a moron for having a param that looks like that
     *
     * Yes, it would be better to fix this on the client side, but that is not always an option
     * in production
     * @param event
     */
    static fixStillEncodedQueryParams(event: APIGatewayEvent): void;
    /**
     * Allows you to force in a token for an arbitrary event without having to pass the whole thing
     * through Epsilon.  Useful for when you need to test a handler that needs authorization,
     * and don't need to instantiate all of epsilon, just the handler
     * @param event Event to decorate
     * @param jwtToken String containing a valid JWT token
     */
    static applyTokenToEventForTesting(event: APIGatewayEvent, jwtToken: string): void;
    static extractBasicAuthenticationToken(event: APIGatewayEvent, throwErrorOnMissingBad?: boolean): BasicAuthToken;
    static eventIsAGraphQLIntrospection(event: APIGatewayEvent): boolean;
    static extractAuthorizationHeaderCaseInsensitive(evt: APIGatewayEvent): string;
    static extractBearerTokenFromEvent(evt: APIGatewayEvent): string;
    static hostIsLocal(host: string): boolean;
    static hostIsLocalOrNotRoutableIP4(host: string): boolean;
}