using System;
using System.Web.Http;
using Kreta.BusinessLogic.Helpers;
using Kreta.Core.Elearning.Nexius;
using Kreta.Web.Helpers;
using Kreta.Web.Security;
using Nexius.Common.Helpers;
using Nexius.Common.Lti;

namespace Kreta.Web.Areas.Adminisztracio.ApiControllers
{
    [ApiRoleClaimsAuthorize(true)]
    public class ELearningApiController : ApiController
    {
        private readonly INexiusCourseService nexiusCourseService;

        public ELearningApiController(INexiusCourseService nexiusCourseService)
        {
            this.nexiusCourseService = nexiusCourseService;
        }

        [HttpGet]
        public IHttpActionResult StartCourse(string launchUri)
        {
            var felhasznaloId = string.Empty;
            var vezeteknev = ClaimData.Vezeteknev;
            var utonev = ClaimData.Utonev;

            var nexiusId = new IntezmenyHelper(ConnectionTypeExtensions.GetActiveSessionConnectionType()).GetNexiusId();

            FelhasznaloHelper helper = new FelhasznaloHelper(ConnectionTypeExtensions.GetActiveSessionConnectionType());
            if (ClaimData.GondviseloId.HasValue)
            {
                var (EgyediAzonosito, Nev) = helper.GetGondviseloAdat(ClaimData.GondviseloId.Value);
                felhasznaloId = EgyediAzonosito;
                vezeteknev = Nev;
                utonev = " ";
            }
            else
            {
                felhasznaloId = helper.GetFelhasznaloEgyediAzonosito(ClaimData.FelhasznaloId);
            }

            Uri requestUrl = Request.RequestUri;

            string returnUrl = $"{requestUrl.Scheme}://{requestUrl.Host}/Adminisztracio/ELearning";

            var isGondviselo = ClaimData.IsTanuloOrGondviselo && ClaimData.GondviseloId != null;
            var isTanulo = ClaimData.IsTanuloOrGondviselo && ClaimData.GondviseloId == null;
            (string szuletesiNev, string oktatasiAzonosito, string emailCim) = helper.GetUserDetailsForElearning(ClaimData.FelhasznaloId, ClaimData.GondviseloId, isGondviselo, isTanulo);

            var ltiRequest = new LtiLauchRequest()
            {
                UserId = felhasznaloId,
                FamilyName = vezeteknev,
                GivenName = utonev,
                MothersName = isGondviselo ? string.Empty : ClaimData.AnyjaNeve,
                BirthName = isGondviselo ? string.Empty : szuletesiNev,
                BirthPlace = isGondviselo ? string.Empty : ClaimData.SzuletesiHely,
                BirthDay = string.IsNullOrWhiteSpace(ClaimData.SzuletesiDatum) || isGondviselo ? (DateTime?)null : DateTime.Parse(ClaimData.SzuletesiDatum),
                EducationalId = isGondviselo ? string.Empty : oktatasiAzonosito,
                PrimaryEmail = emailCim,
                ReturnUrl = returnUrl,
                RegistrarId = string.IsNullOrWhiteSpace(nexiusId) ? (ShortGuid?)null : Guid.Parse(nexiusId) // implicitly cast the guid as a shortguid
            };

            string url = nexiusCourseService.GenerateLaunchUri(launchUri, ltiRequest);

            return Redirect(url);
        }
    }
}