using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;

using System.Net.Http;

namespace OAuth2Studyl.OAuthClient.Controllers
{
    public class DefaultController : Controller
    {
        // GET: Default
        public ActionResult Index()
        {
            ViewData["OAuthDomain"] = GetOAuthServerDomain();
            ViewData["RedictDomain"] = GetRedictUrlDomain();
            return View();
        }

        public ActionResult Code(string code="", string state="")
        {

            //无Code参数，表示用户拒绝授权
            if (string.IsNullOrEmpty(code))
            {
                return View("CodeReject");
            }

            //后台请求AccessToken
            var questUrl = GetOAuthServerDomain() + "api/OAuth2/GetAccessToken?grant_type=accesstoken&code=" + code + "&redirect_uri=" + GetRedictUrlDomain() + "&client_id=1";
            var accessTokenResult = GetAccessTokenResult(questUrl);

            ViewData["AccessTokenInfo"] = accessTokenResult;
            return View();
        }

        private string GetAccessTokenResult(string url)
        {
            HttpClient client = new HttpClient();

            var result = client.GetStringAsync(url).Result;

            return result;
        }

        private string GetOAuthServerDomain()
        {
            var url = System.Configuration.ConfigurationManager.AppSettings["OAuthDomain"] ?? "http://localhoast:2000/";

            return url;
        }

        private string GetRedictUrlDomain()
        {
            var domain = string.Format("{0}://{1}{2}/", Request.Url.Scheme, Request.Url.Host, Request.Url.Port == 80 ? "" : ":" + Request.Url.Port);
            domain = Request.UrlDomain();

            //return Request.Url.ToString().Split('?')[0];

            return domain;
        }
    }
}