import type { HttpClient } from '@poppinss/oauth-client';
import type { HttpContext } from '@adonisjs/core/http';
import type { FacebookToken, FacebookScopes, LiteralStringUnion, ApiRequestContract, FacebookDriverConfig, FacebookProfileFields, RedirectRequestContract } from '../types.ts';
import { Oauth2Driver } from '../abstract_drivers/oauth2.ts';
/**
 * Facebook OAuth2 driver for authenticating users via Facebook.
 * Supports fetching user profile information including name, email, and profile picture.
 *
 * @example
 * ```ts
 * router.get('/facebook/redirect', ({ ally }) => {
 *   return ally.use('facebook').redirect((request) => {
 *     request.scopes(['email', 'public_profile'])
 *   })
 * })
 *
 * router.get('/facebook/callback', async ({ ally }) => {
 *   const facebook = ally.use('facebook')
 *
 *   if (facebook.accessDenied()) {
 *     return 'Access was denied'
 *   }
 *
 *   if (facebook.stateMisMatch()) {
 *     return 'State mismatch error'
 *   }
 *
 *   if (facebook.hasError()) {
 *     return facebook.getError()
 *   }
 *
 *   const user = await facebook.user()
 *   return user
 * })
 * ```
 */
export declare class FacebookDriver extends Oauth2Driver<FacebookToken, FacebookScopes> {
    config: FacebookDriverConfig;
    /**
     * Facebook token endpoint URL.
     */
    protected accessTokenUrl: string;
    /**
     * Facebook authorization endpoint URL.
     */
    protected authorizeUrl: string;
    /**
     * Facebook profile endpoint URL.
     */
    protected userInfoUrl: string;
    /**
     * The default set of fields to query for the user request
     */
    protected userFields: LiteralStringUnion<FacebookProfileFields>[];
    /**
     * The param name for the authorization code
     */
    protected codeParamName: string;
    /**
     * The param name for the error
     */
    protected errorParamName: string;
    /**
     * Cookie name for storing the "facebok_oauth_state"
     */
    protected stateCookieName: string;
    /**
     * Parameter name to be used for sending and receiving the state
     * from Facebok
     */
    protected stateParamName: string;
    /**
     * Parameter name for defining the scopes
     */
    protected scopeParamName: string;
    /**
     * Scopes separator
     */
    protected scopesSeparator: string;
    /**
     * @param ctx - The HTTP context
     * @param config - Configuration for the Facebook driver
     */
    constructor(ctx: HttpContext, config: FacebookDriverConfig);
    /**
     * Configures the redirect request with default scopes and Facebook-specific
     * parameters like display and auth_type.
     *
     * @param request - The redirect request to configure
     */
    protected configureRedirectRequest(request: RedirectRequestContract<FacebookScopes>): void;
    /**
     * Creates an authenticated HTTP request with the proper authorization
     * header for Facebook API calls.
     *
     * @param url - The API endpoint URL
     * @param token - The access token
     */
    protected getAuthenticatedRequest(url: string, token: string): HttpClient;
    /**
     * Fetches the authenticated user's profile information from the Facebook API.
     *
     * @param token - The access token
     * @param callback - Optional callback to customize the API request
     *
     * @see https://developers.facebook.com/docs/graph-api/reference/user/
     */
    protected getUserInfo(token: string, callback?: (request: ApiRequestContract) => void): Promise<{
        id: any;
        name: any;
        nickName: any;
        avatarUrl: any;
        email: any;
        emailVerificationState: "verified" | "unverified" | "unsupported";
        original: any;
    }>;
    /**
     * Check if the error from the callback indicates that the user
     * denied authorization.
     */
    accessDenied(): boolean;
    /**
     * Get the authenticated user's profile information using
     * the authorization code from the callback request.
     *
     * @param callback - Optional callback to customize the API request
     *
     * @example
     * ```ts
     * const user = await ally.use('facebook').user()
     * console.log(user.name, user.email)
     * ```
     */
    user(callback?: (request: ApiRequestContract) => void): Promise<{
        token: FacebookToken;
        id: any;
        name: any;
        nickName: any;
        avatarUrl: any;
        email: any;
        emailVerificationState: "verified" | "unverified" | "unsupported";
        original: any;
    }>;
    /**
     * Get the user's profile information using an existing
     * access token.
     *
     * @param token - The Facebook access token
     * @param callback - Optional callback to customize the API request
     *
     * @example
     * ```ts
     * const user = await ally.use('facebook').userFromToken(accessToken)
     * ```
     */
    userFromToken(token: string, callback?: (request: ApiRequestContract) => void): Promise<{
        token: {
            token: string;
            type: "bearer";
        };
        id: any;
        name: any;
        nickName: any;
        avatarUrl: any;
        email: any;
        emailVerificationState: "verified" | "unverified" | "unsupported";
        original: any;
    }>;
}