using RestSharp;
using RestSharp.Authenticators;
using RestSharp.Deserializers;
using System;
using System.Configuration;
using System.Net;
using System.Security.Authentication;
using Tanshu.Accounts.Contracts;

namespace Tanshu.Accounts.Repository
{
    public sealed class JsonStore
    {
        private static JsonStore _instance = new JsonStore(ConfigurationManager.AppSettings["server"]);

        private readonly Uri _baseUrl;
        private readonly CookieContainer _cookieJar;

        private JsonStore(string baseUrl)
        {
            _baseUrl = new System.Uri(baseUrl);
            _cookieJar = new CookieContainer();

        }

        public static JsonStore GetStore()
        {
            return _instance;
        }
        public static T Execute<T>(RestRequest request) where T : new()
        {
            return _instance.Ex<T>(request);
        }
        public static void Execute(RestRequest request)
        {
            _instance.Ex(request);
        }
        public T Ex<T>(RestRequest request) where T : new()
        {
            var client = new RestClient();
            client.BaseUrl = _baseUrl;
            client.CookieContainer = _cookieJar;
            if (Session.IsAuthenticated)
                client.Authenticator = new HttpBasicAuthenticator(Session.User.Name, Session.User.Password);
            request.DateFormat = "dd-MMM-yyyy HH:mm:ss";
            var response = client.Execute<T>(request);

            if (response.ErrorException != null)
                throw response.ErrorException;
            if (response.StatusCode != HttpStatusCode.OK)
                HandleHTTPException(response);
            return response.Data;
        }
        public void Ex(RestRequest request)
        {
            var client = new RestClient();
            client.BaseUrl = _baseUrl;
            client.CookieContainer = _cookieJar;
            if (Session.IsAuthenticated)
                client.Authenticator = new HttpBasicAuthenticator(Session.User.Name, Session.User.Password);
            request.DateFormat = "dd-MMM-yyyy HH:mm:ss";
            var response = client.Execute(request);
            if (response.ErrorException != null)
                 throw response.ErrorException;
            if (response.StatusCode != HttpStatusCode.OK)
                HandleHTTPException(response);
        }

        private void HandleHTTPException(IRestResponse response)
        {
            string message = new JsonDeserializer().Deserialize<dynamic>(response)["Error"];
            if (response.StatusCode == HttpStatusCode.Forbidden)
                throw new AuthenticationException(string.Format("Forbidden (403) - {0}", message));
            if (response.StatusCode == HttpStatusCode.Unauthorized)
                throw new AuthenticationException(string.Format("Unauthorized (401) - {0}", message));
            if (response.StatusCode == HttpStatusCode.InternalServerError)
                throw new ArgumentException(string.Format("Error - {0}", message));
        }
    }
}