using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using System.Net.Mail;
using System.Net.Mime;
using System.Net;
using System.IO;
namespace FangYar.Common
{
    public static class EmailSmtp
    {
        /// <summary>
        /// 发送邮件
        /// </summary>
        /// <param name="subject">邮件主题</param>
        /// <param name="msg">邮件内容</param>
        /// <param name="filePath">附件地址，如果不添加附件传null或""</param>
        /// <param name="senderEmail">发送人邮箱地址</param>
        /// <param name="senderPwd">发送人邮箱密码</param>
        /// <param name="recipientEmail">接收人邮箱</param>
        public static void SendMail(string subject, string msg, string filePath, string senderEmail, string senderPwd, bool IsBodyHtml, params string[] recipientEmail)
        {
            if (!CheckIsNotEmptyOrNull(subject, msg, senderEmail, senderPwd) || recipientEmail == null || recipientEmail.Length == 0)
            {
                throw new Exception("输入信息无效");
            }
            try
            {
                string[] sendFromUser = senderEmail.Split('@');

                //构造一个Email的Message对象
                MailMessage message = new MailMessage();

                //确定smtp服务器地址。实例化一个Smtp客户端
                System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient("smtp." + sendFromUser[1]);

                //构造发件人地址对象
                message.From = new MailAddress(senderEmail, sendFromUser[0], Encoding.UTF8);

                //构造收件人地址对象
                foreach (string userName in recipientEmail)
                {
                    message.To.Add(new MailAddress(userName, userName.Split('@')[0], Encoding.UTF8));
                }

                if (!string.IsNullOrEmpty(filePath))
                {
                    Attachment attach = new Attachment(filePath);
                    //得到文件的信息
                    ContentDisposition disposition = attach.ContentDisposition;
                    disposition.CreationDate = System.IO.File.GetCreationTime(filePath);
                    disposition.ModificationDate = System.IO.File.GetLastWriteTime(filePath);
                    disposition.ReadDate = System.IO.File.GetLastAccessTime(filePath);
                    //向邮件添加附件
                    message.Attachments.Add(attach);
                }

                //添加邮件主题和内容
                message.Subject = subject;
                message.SubjectEncoding = Encoding.UTF8;
                message.Body = msg;
                message.BodyEncoding = Encoding.UTF8;

                //设置邮件的信息
                client.DeliveryMethod = SmtpDeliveryMethod.Network;
                message.BodyEncoding = System.Text.Encoding.UTF8;
                message.IsBodyHtml = IsBodyHtml;

                //如果服务器支持安全连接，则将安全连接设为true。
                //gmail,qq支持，163不支持
                switch (sendFromUser[1])
                {
                    case "gmail.com":
                    case "qq.com":
                        client.EnableSsl = true;
                        break;
                    default:
                        client.EnableSsl = false;
                        break;
                }

                //设置用户名和密码。
                client.UseDefaultCredentials = false;
                //用户登陆信息
                NetworkCredential myCredentials = new NetworkCredential(senderEmail, senderPwd);
                client.Credentials = myCredentials;
                //发送邮件
                client.Send(message);
            }
            catch (Exception ex)
            {
                throw (ex);
            }
        }

        /// <summary>
        /// 验证所有传入字符串不能为空或null
        /// </summary>
        /// <param name="ps">参数列表</param>
        /// <returns>都不为空或null返回true，否则返回false</returns>
        public static bool CheckIsNotEmptyOrNull(params string[] ps)
        {
            if (ps != null)
            {
                foreach (string item in ps)
                {
                    if (string.IsNullOrEmpty(item)) return false;
                }
                return true;
            }
            return false;
        }
    }
}