AuthController.cs

using RealityLeague.Attributes;
using RestSharp;
using RLLib.Facade;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace RealityLeague.Controllers
{
    public class AuthController : BaseController
    {
    /*
    <add key="fbclientid" value="facebookclientid" />
    <add key="fbsecret" value="facebooksecret" />
    <add key="fbrequesturi" value="http://local.com/auth/facebook" />
    <add key="gaclientid" value="googleclientid" />
    <add key="gasecret" value="googlesecret" />
    <add key="garequesturi" value="http://local.com/auth/google" />
    */
        private class OAuthTokenResponse
        {
            public string access_token { get; set; }
            public string token_type { get; set; }
            public int expires_in { get; set; }
        }

        private class FBMe
        {
            public string id { get; set; }
            public string email { get; set; }
            public string name { get; set; }
        }
        public ActionResult Facebook()
        {
            //do something with the auth.
            var client = new RestClient("https://graph.facebook.com/v2.3/");
            var authRequest = new RestRequest("oauth/access_token", Method.GET);
            authRequest.AddParameter("client_id", ConfigurationManager.AppSettings["fbclientid"]);
            authRequest.AddParameter("redirect_uri", ConfigurationManager.AppSettings["fbrequesturi"]);
            authRequest.AddParameter("client_secret", ConfigurationManager.AppSettings["fbsecret"]);
            authRequest.AddParameter("code", HttpContext.Request.QueryString["code"]);

            IRestResponse<OAuthTokenResponse> oauthToken = client.Execute<OAuthTokenResponse>(authRequest);

            if (oauthToken.Data.access_token == null) Response.Redirect("/Account/Logon");

            var meRequest = new RestRequest("me", Method.GET);
            meRequest.AddParameter("access_token", oauthToken.Data.access_token);

            IRestResponse<FBMe> me = client.Execute<FBMe>(meRequest);

            LogonWithOauth(me.Data.email, me.Data.name, oauthToken.Data.access_token);

            return RedirectToAction("Index", "Account");
        }

        private class GAMe
        {
            public string id { get; set; }
            public string displayName { get; set; }
            public List<gEmails> emails { get; set; }

            public class gEmails
            {
                public string value { get; set; }
                public string type { get; set; }
            }
        }
        public ActionResult Google()
        {
            //do something with the auth.
            var client = new RestClient("https://www.googleapis.com/");
            var authRequest = new RestRequest("oauth2/v3/token", Method.POST);
            authRequest.AddParameter("client_id", ConfigurationManager.AppSettings["gaclientid"]);
            authRequest.AddParameter("redirect_uri", ConfigurationManager.AppSettings["garequesturi"]);
            authRequest.AddParameter("client_secret", ConfigurationManager.AppSettings["gasecret"]);
            authRequest.AddParameter("code", HttpContext.Request.QueryString["code"]);
            authRequest.AddParameter("grant_type", "authorization_code");

            IRestResponse<OAuthTokenResponse> oauthToken = client.Execute<OAuthTokenResponse>(authRequest);

            if (oauthToken.Data.access_token == null) Response.Redirect("/Account/Logon");

            var meRequest = new RestRequest("plus/v1/people/me", Method.GET);
            meRequest.AddParameter("access_token", oauthToken.Data.access_token);

            IRestResponse<GAMe> me = client.Execute<GAMe>(meRequest);

            LogonWithOauth(me.Data.emails[0].value, me.Data.displayName, oauthToken.Data.access_token);

            return RedirectToAction("Index", "Account");
        }


        private void LogonWithOauth(string email, string name, string token)
        {
            var accountFacade = new AccountFacade(Conn);
            var logonToken = accountFacade.accountLogonTokenByEmailAndOauthtoken(email, name, token);

            var userCookie = new System.Web.HttpCookie("userToken")
            {
                Value = logonToken,
                HttpOnly = true,
                Expires = DateTime.Now.AddMonths(1)
            };
           
            Response.Cookies.Add(rltvCookie);
        }
    }
}