import { ExecutionContext, CanActivate } from "@nestjs/common";
import { FieldParser } from "./field";
import { JwtPayloadUpdated, JwtSignOptions } from "cymaple-utils";
import { Request } from "express";
declare type JwtOptions = {
    secretKey: string;
    signOptions: JwtSignOptions;
};
export interface JwtGuardPayloadHandler<T> {
    (payload: JwtPayloadUpdated<T>, request: Request): void | Promise<void>;
}
export interface JwtGuardTokenHandler {
    (token: string): string | Promise<string>;
}
export interface GenerateTokenStrategy {
    (): string;
}
export declare class JwtGuard<PayloadData> implements CanActivate {
    private readonly fieldParser;
    private readonly jwtOptions;
    private payloadHandlerList;
    private tokenHandlerList;
    private request;
    private payload;
    private token;
    private allowAnonymousState;
    private anonymousToken;
    constructor(fieldParser: FieldParser<Request>, jwtOptions: JwtOptions);
    canActivate(ctx: ExecutionContext): Promise<boolean>;
    private parseToken;
    private authToken;
    private useTokenHandlers;
    private usePayloadHandlers;
    allowAnonymous(strategy: GenerateTokenStrategy): void;
    addPayloadHandler(handler: JwtGuardPayloadHandler<PayloadData>): this;
    addTokenHandler(handler: JwtGuardTokenHandler): this;
}
export {};