using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Mail;
using System.Net;
using System.Security.Cryptography.X509Certificates;
using System.Net.Security;


namespace QMFrameWork.Mail
{
    /// <summary>
    /// Smtp邮件服务
    /// </summary>
    public class SmtpMailSender
    {
        #region 属性

        /// <summary>
        /// 邮件信息
        /// </summary>
        private MailMessage mailMessage;

        /// <summary>
        /// Smtp客户端
        /// </summary>
        private SmtpClient smtpClient;

        #endregion

        #region 构造函数

        /// <summary>
        /// 
        /// </summary>
        /// <param name="ServerInfo">邮件服务器对象</param>
        /// <param name="MailInfo">邮件内容对象</param>
        public SmtpMailSender(SmtpServerInfo ServerInfo, MailInfo MailInfo)
        {
            //判断邮件服务器信息的完整性
            CheckSmtpServerInfo(ServerInfo);

            mailMessage = new MailMessage();
            smtpClient = new SmtpClient();
            smtpClient.Host = ServerInfo.SmtpServer;
            smtpClient.Port = 25;
            smtpClient.UseDefaultCredentials = true;
            smtpClient.Credentials = new NetworkCredential(ServerInfo.SenderUser, ServerInfo.SenderPassword, ServerInfo.DoMain);

            //判断邮件信息是否填写完整
            CheckMailInfo(MailInfo);
            //发件人
            AddFrommail(ServerInfo.SenderUserEmail);
            //邮件标题
            AddSubject(MailInfo.Subject);
            //邮件内容
            AddContent(MailInfo.Content);
            //收件人
            AddReceiver(MailInfo.ToMail);
            //附件
            AddAttachment(MailInfo.Additional);

            mailMessage.IsBodyHtml = true;

            mailMessage.BodyEncoding = System.Text.Encoding.Default;
        }

        #endregion

        #region 发件人邮箱

        ///// <summary>
        ///// 发件人邮箱
        ///// </summary>
        //public String FromMail
        //{
        //    get
        //    {
        //        return mailMessage.From.Address;
        //    }

        //    set
        //    {
        //        mailMessage.From = new MailAddress(value);
        //    }
        //}

        /// <summary>
        /// 发件人邮箱
        /// </summary>
        private void AddFrommail(String FormMail)
        {
            mailMessage.From = new MailAddress(FormMail);
        }

        #endregion

        #region 邮件标题

        ///// <summary>
        ///// 邮件标题
        ///// </summary>
        //public String Subject
        //{
        //    get
        //    {
        //        return mailMessage.Subject;
        //    }

        //    set
        //    {
        //        mailMessage.Subject = value;
        //    }
        //}

        /// <summary>
        /// 邮件标题
        /// </summary>
        /// <param name="Subject"></param>
        private void AddSubject(String Subject)
        {
             mailMessage.Subject = Subject;
        }

        #endregion

        #region 邮件内容

        ///// <summary>
        ///// 邮件内容
        ///// </summary>
        //public String Content
        //{
        //    get
        //    {
        //        return mailMessage.Body;
        //    }
        //    set
        //    {
        //        mailMessage.Body = value;
        //    }
        //}

        /// <summary>
        /// 邮件内容
        /// </summary>
        private void AddContent(String Content)
        {
            mailMessage.Body = Content;
        }

        #endregion

        #region 添加收件人

        /// <summary>
        /// 添加收件人
        /// </summary>
        /// <param name="toEmail"></param>
        private void AddReceiver(String[] toEmail)
        {
            //添加收件人
            foreach (String mail in toEmail)
            {
                mailMessage.To.Add(mail);
            }
        }

        #endregion

        #region 添加附件

        /// <summary>
        /// 添加附件
        /// </summary>
        /// <param name="filename"></param>
        private void AddAttachment(String[] filename)
        {
            //为空时返回
            if (filename == null || filename.Length <= 0)
            {
                return;
            }
            //循环添加附件
            foreach (String fname in filename)
            {
                mailMessage.Attachments.Add(new Attachment(fname));
            }
        }

        #endregion

        #region 判断邮件信息是否填写完整

        /// <summary>
        /// 判断邮件信息是否填写完整
        /// </summary>
        private void CheckMailInfo(MailInfo MailInfo)
        {
            //收件人
            if (MailInfo.ToMail == null || MailInfo.ToMail.Length <= 0)
            {
                throw new Exception("收件人为空.");
            }

            if (string.IsNullOrEmpty(MailInfo.Subject))
            {
                throw new Exception("标题为空.");
            }

            if (string.IsNullOrEmpty(MailInfo.Content))
            {
                throw new Exception("内容为空.");
            }
        }

        #endregion

        #region 判断邮件服务器信息的完整性

        /// <summary>
        /// 判断邮件服务器的信息完整性
        /// </summary>
        public void CheckSmtpServerInfo(SmtpServerInfo ServerInfo)
        {
            //邮件服务器域名
            if (ServerInfo.SmtpServer == null || ServerInfo.DoMain == null)
            {
                throw new Exception("请设置邮件服务器域名.");
            }

            //发件人
            if (ServerInfo.SenderUser == null || ServerInfo.SenderPassword == null || ServerInfo.SenderUserEmail == null)
            {
                throw new Exception("请设置发件人信息.");
            }
        }

        #endregion

        #region 标准邮件发送接口

        /// <summary>
        /// 发送
        /// </summary>
        public void Send()
        {
            smtpClient.Send(mailMessage);
        }

        #endregion

    }
}