using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Mail;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using VetClinicBusinessLogic.BindingModels;

namespace VetClinicBusinessLogic.BusinessLogic
{
    public class MailWorker
    {
        protected string _mailLogin;
        protected string _mailPassword;
        protected string _smtpClientHost;
        protected int _smtpClientPort;
        protected string _popHost;
        protected int _popPort;
        public void MailConfig(MailConfigBindingModel config)
        {
            _mailLogin = config.MailLogin;
            _mailPassword = config.MailPassword;
            _smtpClientHost = config.SmtpClientHost;
            _smtpClientPort = config.SmtpClientPort;
            _popHost = config.PopHost;
            _popPort = config.PopPort;
        }
        public async void MailSendAsync(MailSendInfoBindingModel info)
        {
            if (string.IsNullOrEmpty(_mailLogin) || string.IsNullOrEmpty(_mailPassword))
            {
                return;
            }
            if (string.IsNullOrEmpty(_smtpClientHost) || _smtpClientPort == 0)
            {
                return;
            }
            if (string.IsNullOrEmpty(info.MailAddress) ||
           string.IsNullOrEmpty(info.Subject) || string.IsNullOrEmpty(info.Text))
            {
                return;
            }
            await SendMailAsync(info);
        }
        private async Task SendMailAsync(MailSendInfoBindingModel info)
        {
            using var objMailMessage = new MailMessage();
            using var objSmtpClient = new SmtpClient(_smtpClientHost,
            _smtpClientPort);
            try
            {
                objMailMessage.From = new MailAddress(_mailLogin);
                objMailMessage.To.Add(new MailAddress(info.MailAddress));
                objMailMessage.Subject = info.Subject;
                objMailMessage.Body = info.Text;
                objMailMessage.SubjectEncoding = Encoding.UTF8;
                objMailMessage.BodyEncoding = Encoding.UTF8;
                objSmtpClient.UseDefaultCredentials = false;
                objSmtpClient.EnableSsl = true;
                objSmtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;
                objSmtpClient.Credentials = new NetworkCredential(_mailLogin, _mailPassword);
                await Task.Run(() => objSmtpClient.Send(objMailMessage));
            }
            catch (Exception)
            {
                throw;
            }
        }
    }
}