package com.blyl.util;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Address;
import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.*;
import javax.servlet.http.HttpServletRequest;
import java.util.Date;
import java.util.Properties;

/**
 * @author zzx
 * @Description: ${todo}
 * @date 2018/11/12 11:56
 */

public class sendMailUtil {

    /**
     *
     * @param filePath 傳送excel檔案的路徑
     * @param eamilUrl 接受郵件郵箱地址
     * @param sendSubject 郵件標題
     * @return
     */
    public static String sendMessage(String filePath, String[] eamilUrl, String sendSubject){

        //傳送郵件郵箱資訊
        String myEmailSMTPHost = "smtp.163.com";
        String myEmailAccount = "
 
[email protected]";
        String myEmailPassword = "zzx123";
        String senderName = "傳送人暱稱"; //傳送人暱稱

//        String[] eamilUrl = new String[] {"[email protected]"};//接受郵件郵箱
//        String sendSubject = "郵件標題"; //郵件標題
        String sendContent = "郵件內容"; //郵件內容
//        String imgPath = request.getSession().getServletContext().getRealPath("/") + "mail\\img\\1.jpg";// 傳送圖片
//        String filePath = request.getSession().getServletContext().getRealPath("/") + "mail\\file\\123.docx"; //傳送附件
//        String filePath = request.getSession().getServletContext().getRealPath("/") + "mail\\file\\2018-11-09\\73f02f55-0109-4518-b108-ee01c1df93af.xlsx"; //傳送附件

        Properties props = new Properties();
        props.setProperty("mail.transport.protocol", "smtp"); // 使用的協議（JavaMail規範要求）
        props.setProperty("mail.smtp.host", myEmailSMTPHost); // 發件人的郵箱的 SMTP 伺服器地址
        props.setProperty("mail.smtp.auth", "true"); // 需要請求認證

        Session session = Session.getDefaultInstance(props);// 根據配置建立會話物件, 用於和郵件伺服器互動
        session.setDebug(true);

        try {
            //傳送複雜郵件
            MimeMessage message = createComplicatedMessage(session, myEmailAccount, senderName, eamilUrl, sendSubject, sendContent,null, filePath, sendSubject);
            Transport transport = session.getTransport();  //獲取郵件傳輸物件
            transport.connect(myEmailAccount, myEmailPassword);
            transport.sendMessage(message, message.getAllRecipients());
            transport.close();
            return "success";
        } catch (Exception e) {
            e.printStackTrace();
            return "fail";
        }
    }

    /**
     * @Author: zzx
     * @Description: 建立郵件,圖片路徑可以為空
     * @Date: 2018/11/8 14:33
     * @Param: sendMail：傳送人的郵箱,senderName：傳送人的暱稱,receiveMail:接收郵件的郵箱，subject：郵件標題，msgContent:郵件內容,imgPath:圖片路徑,filePath:附件路徑,sendSubject：附件名字
     * @Return
     */
    public static MimeMessage createComplicatedMessage(Session session,String sendMail, String senderName, String[] receiveMail,String subject,String msgContent, String imgPath, String filePath, String sendSubject) throws Exception{

        MimeMessage message = new MimeMessage(session);

        message.setFrom(new InternetAddress(sendMail,senderName,"UTF-8"));
        Address[] addr = new Address[receiveMail.length];
        for(int i=0;i<addr.length;i++){
            addr[i] = new InternetAddress(receiveMail[i], "", "UTF-8");
        }
        message.addRecipients(Message.RecipientType.TO, addr);
        message.setSubject(subject);

        /*
         * 郵件內容的建立：圖片和附件
         */

        //建立文字節點
        MimeBodyPart text = new MimeBodyPart();
        //將文字和圖片節點結合
        MimeMultipart text_image = new MimeMultipart();

        if(imgPath != null) {
            //建立圖片節點
            MimeBodyPart image = new MimeBodyPart();
            DataHandler dh = new DataHandler(new FileDataSource(imgPath));  //讀取本地檔案
            image.setDataHandler(dh);   //將資料新增到節點
            image.setContentID("image_id");// 為“節點”設定一個唯一編號（在文字“節點”將引用該ID）
            //將圖片包含到文字內容中
            text.setContent(msgContent + "<br/><img src='cid:image_id'/>", "text/html;charset=UTF-8");
            text_image.addBodyPart(text);
            text_image.addBodyPart(image);
            text_image.setSubType("related"); //關聯關係 有內嵌資源要定義related
        } else {
            text.setContent(msgContent, "text/html;charset=UTF-8");
            text_image.addBodyPart(text);
        }

        //將混合節點封裝成普通節點BodyPart,郵件最終由多個BodyPart組成
        MimeBodyPart text_image_body = new MimeBodyPart();
        text_image_body.setContent(text_image);

        //新增附件節點
        MimeBodyPart document = new MimeBodyPart();
        DataHandler dhdoc = new DataHandler(new FileDataSource(filePath)); //讀取本地文件
        document.setDataHandler(dhdoc);   //將附件資料新增到節點
//        document.setFileName(MimeUtility.decodeText(dhdoc.getName())); //設定附件檔名
        document.setFileName(sendSubject + ".xlsx"); //設定附件檔名

        //設定文字和圖片，附件的關係（混合大節點）
        MimeMultipart mm = new MimeMultipart();
        mm.addBodyPart(text_image_body);
        mm.addBodyPart(document);
        mm.setSubType("mixed");  //有附件資源要定義mixed

        //最終節點新增到郵件中
        message.setContent(mm);
        message.setSentDate(new Date());
        message.saveChanges();

        return message;
    }
}