using System;
using System.Data;
using System.Linq;
using System.Xml;
using Hangfire;
using Kreta.Core;
using Kreta.DataAccessManual;
using Kreta.DataAccessManual.Interfaces;
using Kreta.Framework;
using Kreta.Job.Tasks.Core;
using Kreta.Job.Tasks.Core.Models;
using Kreta.Resources;

namespace Kreta.Job.Tasks.Helpers.Email
{
    internal static class KozelgoFogadooraMailHelper
    {
        internal static void SendKozelgoFogadooraMail(string connectionString)
        {
            Dal.ServiceSystemConnection.Run(connectionString, h =>
            {
                var fogadooraDal = h.Fogadoora();
                try
                {
                    var kozelgoFogadoorak = fogadooraDal.GetKozelgoFogadoorak().Tables[0].AsEnumerable().Select(f => new
                    {
                        FogadooraKezdete = f.Field<DateTime>("FogadooraKezdete"),
                        FogadooraVege = f.Field<DateTime>("FogadooraVege"),
                        NyomtatasiNev = f.Field<string>("NyomtatasiNev"),
                        EmailCim = f.Field<string>("EmailCim"),
                        EmailGuid = f.Field<Guid?>("EmailGuid"),
                        TeremNev = f.Field<string>("TeremNev"),
                        IntezmenyNev = f.Field<string>("IntezmenyNev"),
                        IntezmenyCim = f.Field<string>("IntezmenyCim"),
                        IntezmenyFenntartoEmail = f.Field<string>("IntezmenyFenntartoEmail"),
                        IntezmenyUrl = string.Format(CommonResource.IntezmenyUrl, f.Field<string>("IntezmenyAzon")),
                        IntezmenyAzon = f.Field<string>("IntezmenyAzon"),
                        UserId = f.Field<int>("UserId"),
                        OsztalyCsoportNev = f.Field<string>("OsztalyCsoportNev")
                    });

                    foreach (var kozelgoFogadoora in kozelgoFogadoorak.Where(f => f.EmailCim.IsValidEmail()))
                    {
                        if (GetProfileData(h, kozelgoFogadoora.UserId, "FogadooraEmlekeztetoEmailJelentkezes"))
                        {
                            var datum = kozelgoFogadoora.FogadooraKezdete.ToString(Kreta.Core.Constants.ToStringPattern.HungarianDate);
                            var idopont = string.Format("{0} - {1}",
                                kozelgoFogadoora.FogadooraKezdete.ToString(Kreta.Core.Constants.ToStringPattern.HungarianDateTimeWithoutSeconds),
                                kozelgoFogadoora.FogadooraVege.ToString(Kreta.Core.Constants.ToStringPattern.HungarianDateTimeWithoutSeconds));

                            var subject = string.Format(EmailResource.KozelgoFogadooraTargy, datum, kozelgoFogadoora.OsztalyCsoportNev, kozelgoFogadoora.NyomtatasiNev);
                            var message = string.Format(EmailResource.KozelgoFogadooraTartalom,
                                kozelgoFogadoora.NyomtatasiNev,
                                idopont,
                                kozelgoFogadoora.TeremNev,
                                kozelgoFogadoora.NyomtatasiNev,
                                kozelgoFogadoora.IntezmenyUrl,
                                kozelgoFogadoora.IntezmenyNev,
                                kozelgoFogadoora.IntezmenyCim,
                                kozelgoFogadoora.OsztalyCsoportNev
                            );

                            var emailModel = new EmailModel(kozelgoFogadoora.IntezmenyAzon, kozelgoFogadoora.EmailGuid)
                            {
                                TargetEmail = kozelgoFogadoora.EmailCim,
                                Subject = subject,
                                Message = message
                                    + string.Format(CommonResource.TevesCimzett, kozelgoFogadoora.IntezmenyFenntartoEmail)
                                    + Environment.NewLine
                                    + string.Format(CommonResource.IntezmenyNevEsUrlLink, kozelgoFogadoora.IntezmenyNev, kozelgoFogadoora.IntezmenyUrl)
                            };

                            BackgroundJob.Enqueue<IEmailJob>((email) => email.SendMailAsync(emailModel));
                        }
                    }
                }
                catch (Exception ex)
                {
                    SDAServer.Instance.Logger.ExceptionThrown(ex);
                }
            });
        }

        private static bool GetProfileData(IDalHandler h, int felhasznaloId, string profileTipus)
        {
            var dal = h.Fogadoora(null);
            var profileXml = dal.GetProfileData(felhasznaloId);

            if (string.IsNullOrWhiteSpace(profileXml))
            {
                return true;
            }

            XmlDocument xDoc = new XmlDocument();
            xDoc.LoadXml(profileXml);
            XmlNode node = xDoc.SelectSingleNode("UserProfile/" + profileTipus);
            if (node == null)
                return true;

            return (bool.TryParse(node.InnerText, out bool result)) && result;
        }
    }
}