import * as Hapi from 'hapi';
import { PluginOptions } from './plugin';
import { Profile } from './profile';
export declare type Scopes = string[] | ((provider: string, req: Hapi.Request) => string[]);
export interface AccessTokens {
    access_token: string;
    refresh_token: string;
}
export declare abstract class Provider {
    name: string;
    clientId: string;
    clientSecret: string;
    tokenUrl: string;
    authUrl: string;
    scopes: Scopes;
    query: {
        [index: string]: any;
    };
    encoding: string;
    serialiseScopes(req: Hapi.Request): string;
    getScopes(req: Hapi.Request): string[];
    compileAuthUrl(req: Hapi.Request, options: PluginOptions, redirectUri: string): Promise<string>;
    requestToken(code: string, redirect_uri: string): Promise<any>;
    refreshToken(refresh_token: string): Promise<{
        access_token: string;
        refresh_token?: string;
    }>;
    sendTokenRequest(payload: object): Promise<any>;
    handleCode(h: Hapi.ResponseToolkit, options: PluginOptions, redirectUri: string): Promise<any>;
    extractCode(req: Hapi.Request): any;
    getCodeError(req: Hapi.Request): CodeError | null;
    getProfile(tokens: AccessTokens): Promise<Profile>;
}
export declare function registerProvider(server: Hapi.Server, options: PluginOptions, provider: Provider): void;
export declare class CodeError extends Error {
    kind: CodeError.Kind;
    constructor(kind: CodeError.Kind);
}
export declare namespace CodeError {
    enum Kind {
        Denied = "Request denied by user",
        Missing = "Code not found in request",
        Unknown = "Unknown error returned from provider",
    }
}