using ComputerStoreContracts.BindingModels;
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Mail;
using System.Text;
using System.Threading.Tasks;

namespace ComputerStoreBusinessLogic.MailStuff
{
    public abstract class AbstractMail
    {
        protected string _mailLogin = string.Empty;
        protected string _mailPassword = string.Empty;
        protected string _smtpClientHost = string.Empty;

        protected int _smtpClientPort;
        protected string _popHost = string.Empty;
        protected int _popPort;

        private readonly ILogger _logger;

        public AbstractMail(ILogger<AbstractMail> logger)
        {
            _logger = logger;           
        }

        public void MailConfig(MailConfigBindingModel config)
        {
            _mailLogin = config.Login;
            _mailPassword = config.Password;
            _smtpClientHost = config.SmtpClientHost;
            _smtpClientPort = config.SmtpClientPort;
            _popHost = config.PopHost;
            _popPort = config.PopPort;
            _logger.LogDebug("Config: {login}, {password}, {clientHost}, {clientPort}, {popHost}, {popPort}", _mailLogin, _mailPassword, _smtpClientHost, _smtpClientPort, _popHost, _popPort);
        }

        public async void MailSendAsync(MailMessage info)
        {
            if (string.IsNullOrEmpty(_mailLogin) || string.IsNullOrEmpty(_mailPassword))
            {
                return;
            }
            if (string.IsNullOrEmpty(_smtpClientHost) || _smtpClientPort == 0)
            {
                return;
            }
            if (string.IsNullOrEmpty(info.To.ToString()) || string.IsNullOrEmpty(info.Subject) || string.IsNullOrEmpty(info.Body) || !info.Attachments.Any())
            {
                return;
            }           
            _logger.LogDebug("Send E-mail: {To}, {Subject}", info.To.ToString(), info.Subject);
            await SendMailAsync(info);
        }

        protected abstract Task SendMailAsync(MailMessage info);
    }
}