//
//  Class:			Mail
//	Current CLR:	4.0.30319.34209
//	System:			Microsoft Visual Studio 10.0
//	Author:			dani
// 	Created:		5/28/2015 10:24:12 AM
//
//	Copyright (c) 2015 Informatikbüro Daniel Schick. All rights reserved.

using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Net.Mime;
using System.Net.Mail;
using log4net;

using bsmd.database;

namespace bsmd.ReportGenerator
{
    public class BSMDMail
    {
        public static void SendNSWReportAsAttachment(MessageCore core, string filename)
        {
            ILog log = LogManager.GetLogger(typeof(BSMDMail));
            SmtpClient smtpClient = new SmtpClient();
            NetworkCredential basicCredential = new NetworkCredential(Properties.Settings.Default.SMTPUser,
                Properties.Settings.Default.SMTPPassword);

            foreach (string recipient in Properties.Settings.Default.Recipient)
            {
                MailMessage message = new MailMessage();
                MailAddress fromAddress = new MailAddress(Properties.Settings.Default.Sender);

                // setup up the host, increase the timeout to 5 minutes
                smtpClient.Host = Properties.Settings.Default.SMTPServer;
                smtpClient.UseDefaultCredentials = false;
                smtpClient.Credentials = basicCredential;
                smtpClient.Timeout = (60 * 5 * 1000);
                smtpClient.EnableSsl = true;

                message.From = fromAddress;
                message.Subject = string.Format("NSW Message report for {0}", core.IMO);
                message.IsBodyHtml = false;
                message.Body = "see attachment";
                message.To.Add(recipient);

                if (filename != null)
                {
                    Attachment attachment = new Attachment(filename, MediaTypeNames.Application.Octet);
                    ContentDisposition disposition = attachment.ContentDisposition;
                    disposition.CreationDate = File.GetCreationTime(filename);
                    disposition.ModificationDate = File.GetLastWriteTime(filename);
                    disposition.ReadDate = File.GetLastAccessTime(filename);
                    disposition.FileName = Path.GetFileName(filename);
                    disposition.Size = new FileInfo(filename).Length;
                    disposition.DispositionType = DispositionTypeNames.Attachment;
                    message.Attachments.Add(attachment);
                }

                // doch nicht asynchron, da nur eine Nachricht gleichzeitig geschickt werden kann und ich so den sync code spare
                try
                {
                    smtpClient.Send(message);
                    log.InfoFormat("Email sending to {0} successful.", recipient);
                }
                catch (SmtpException smtpException)
                {
                    log.ErrorFormat("SMTP error while sending e-mail:{0}", smtpException.Message);
                }
                catch (Exception ex)
                {
                    log.ErrorFormat("other error while sending e-mail:{0}", ex.Message);
                }
                
                message.Dispose();

            }

            smtpClient.Dispose();

            // http://stackoverflow.com/questions/7276375/what-are-best-practices-for-using-smtpclient-sendasync-and-dispose-under-net-4
            // asynchron schicken und wenn's erledigt ist gleich disposen (wichtig!)
            /*
            smtpClient.SendCompleted += (s, e) =>
            {
                smtpClient.Dispose();
                message.Dispose();
            };

            smtpClient.SendAsync(message, null);
            */
        }
    }
}