/// <reference types="passport"/>

/**
 * Using this module, one can easily implement a strategy using typescript by
 * inheriting the 'Strategy' class and reimplementing the 'authenticate' method.
 */

/// <reference types="express" />

import passport = require("passport");
import express = require("express");

declare class Strategy implements passport.Strategy {
    /**
     * Performs authentication for the request.
     * Note: Virtual function - re-implement in the strategy.
     * @param req The request to authenticate.
     * @param options Options passed to the strategy.
     */
    authenticate(req: express.Request, options?: any): void;

    //
    // Augmented strategy functions.
    // These are available only from the 'authenticate' function.
    // They are added manually by the passport framework.
    //

    /**
     * Authenticate `user`, with optional `info`.
     *
     * Strategies should call this function to successfully authenticate a
     * user.  `user` should be an object supplied by the application after it
     * has been given an opportunity to verify credentials.  `info` is an
     * optional argument containing additional user information.  This is
     * useful for third-party authentication strategies to pass profile
     * details.
     *
     * @param {Object} user
     * @param {Object} info
     * @api public
     */
    success(user: any, info?: any): void;

    /**
     * Fail authentication, with optional `challenge` and `status`, defaulting
     * to 401.
     *
     * Strategies should call this function to fail an authentication attempt.
     *
     * @param {String} challenge (Can also be an object with 'message' and 'type' fields).
     * @param {Number} status
     * @api public
     */
    fail(challenge: any, status: number): void;
    fail(status: number): void;

    /**
     * Redirect to `url` with optional `status`, defaulting to 302.
     *
     * Strategies should call this function to redirect the user (via their
     * user agent) to a third-party website for authentication.
     *
     * @param {String} url
     * @param {Number} status
     * @api public
     */
    redirect(url: string, status?: number): void;

    /**
     * Pass without making a success or fail decision.
     *
     * Under most circumstances, Strategies should not need to call this
     * function.  It exists primarily to allow previous authentication state
     * to be restored, for example from an HTTP session.
     *
     * @api public
     */
    pass(): void;

    /**
     * Internal error while performing authentication.
     *
     * Strategies should call this function when an internal error occurs
     * during the process of performing authentication; for example, if the
     * user directory is not available.
     *
     * @param {Error} err
     * @api public
     */
    error(err: Error): void;
}