using System;
using System.IO;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Kreta.BusinessLogic.Classes;
using Kreta.BusinessLogic.Security;
using Kreta.BusinessLogic.Utils;
using Kreta.Enums.ManualEnums;
using Kreta.Resources;
using Kreta.Web.Areas.Tanulo.Models;
using Kreta.Web.Configuration;
using Kreta.Web.Helpers;
using Kreta.Web.Security;

namespace Kreta.Web.Classes
{
    public static class Utils
    {
        public static string GetExcelTemplateFilePath(string fileName)
        {
            return GetServerFilePath(Constants.ImportExport.ExcelTemplateDirectory, fileName);
        }

        public static string GetExcelTemplateImportExportFilePath(string fileName)
        {
            return GetServerFilePath(Constants.ImportExport.ExcelTemplateImportExportDirectory, fileName);
        }

        public static string GetServerFilePath(string directory, string fileName)
        {
            string directoryPath = HttpContext.Current.Server.MapPath(directory);
            var directoryInfo = new DirectoryInfo(directoryPath);
            FileInfo fileInfo = directoryInfo.GetFiles().SingleOrDefault(x => x.Name.Equals(fileName, StringComparison.InvariantCultureIgnoreCase));
            var fullName = fileInfo?.FullName;
            return fullName;
        }

        public static void TelefonSzamValidation(System.Web.Http.ModelBinding.ModelStateDictionary modelState, string telefonszam, int? telefonTipus, TelefonszamTulajdonosEnum telefonszamTulajdonos)
        {
            if (!string.IsNullOrWhiteSpace(telefonszam) && telefonTipus == null)
            {
                modelState.AddModelError("CimElerhetosegModel.TelefonTipus", ErrorResource.Telefon0TipusKotelezo.Replace("{0}", telefonszamTulajdonos.GetDisplayName(ClaimData.SelectedTanevID.Value)));
            }
        }

        public static void TajSzamValidation(System.Web.Http.ModelBinding.ModelStateDictionary modelState, string modelKey, string tajSzam)
        {
            var errorMessages = CommonUtils.TajSzamValidation(tajSzam);
            foreach (var errorMessage in errorMessages)
            {
                modelState.AddModelError(modelKey, errorMessage);
            }
        }

        public static int GetTanuloEletkor(TanuloModel tanuloModel)
        {
            TimeSpan span = DateTime.Now - tanuloModel.TanuloAlapAdatModel.SzuletesiIdo.Value;
            int tanuloEletkor = (DateTime.MinValue + span).Year - 1;

            return tanuloEletkor;
        }

        public static string GetAuthenticationTokenRedirectUrl(string baseUrl, string key)
        {
            var idpConfiguration = DependencyResolver.Current.GetService<IIdpConfiguration>();

            string redirectUrl = idpConfiguration.LoginEnabled ? baseUrl : new AuthenticationHelper(ConnectionTypeExtensions.GetSessionConnectionType()).CreateUrl(baseUrl, key, ClaimData.IntezmenyiDictionaryEnvironmentName);

            return redirectUrl;
        }

        /// <summary>
        /// Visszaadja a másik "lényeges" tanév id-t.
        /// Következő tanév esetén az aktuálisat, aktuális tanév esetén a következő tanévét, ha létezik.
        /// </summary>
        public static int? GetAnotherYearId() => ClaimData.IsKovTanev ? ClaimData.AktivTanevID : (ClaimData.IsActivTanev && ClaimData.KovTanevID.HasValue ? ClaimData.KovTanevID : null);
    }
}