Sending Email with JSON Format Message

Sending email using message content in JSON format with Groovy script

Groovy Script

import javax.mail.*
import javax.mail.internet.*
import groovy.json.JsonSlurper
import groovy.json.JsonOutput

/*
Request: 
{
 "gonderen":"bilgi.apinizer",
 "alicilar":"[e-mail]",
 "bilgiAlicilar":null,
 "gizliAlicilar":null,
 "konu":"test",
 "icerik":"test",
 "icerikTuru":"text/html;charset=utf-8"
}

Response: 
{
 "islemBasariliMi":true,
 "hataMesaji":"",
 "hataKodu":""
}
*/

try {
    requestHeaderMapFromClient.put('statusCode',0)
    def jsonSlurper = new JsonSlurper()
    def jsonMessage = jsonSlurper.parseText(requestBodyTextFromClient)
    
    String from=jsonMessage.gonderen
    if(from.equals("bilgi.apinizer")){
        from="[e-mail]"
    }else if(from.equals("apinizer.hata")){
        from="[e-mail]"
    } else{
        statusCode=400
        requestErrorMessageFromClient = JsonOutput.toJson([islemBasariliMi: false, hataMesaji: 'Hatalı gönderen bilgisi', hataKodu:'01-ERR-02'])
        return
    }
    
    String to=jsonMessage.alicilar
    String cc=jsonMessage.bilgiAlicilar
    String bcc=jsonMessage.bilgiAlicilar
    
    if(!to?.trim()&& !cc?.trim()&& !bcc?.trim()){
        requestErrorMessageFromClient = JsonOutput.toJson([islemBasariliMi: false, hataMesaji: 'En az bir alıcı eklenmeli', hataKodu:'01-ERR-03'])
        statusCode=400
        return
    }
    
    String subject=jsonMessage.konu
    if(subject?.trim()){
        subject=""
    }
    
    String content=jsonMessage.icerik
    if(content?.trim()){
        content=""
    }
    
    String mimeType=jsonMessage.icerikTuru
    if(mimeType?.trim()){
        mimeType="text/html;charset=utf-8"
    }
    
    // Init constants of sender email account.
    String email = "apinizer.hata"
    String password = ""
    String host = "mail.apinizer.com"
    String port = "25" // "465" "587"
    
    // Set up properties.
    Properties props = System.getProperties()
    props.put("mail.smtp.user", email)
    props.put("mail.smtp.host", host)
    props.put("mail.smtp.port", port)
    props.put("mail.smtp.auth", "false")
    props.put("mail.smtp.starttls.enable", "false")
    props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory")
    props.put("mail.smtp.ssl.trust", host)
    // Change host to "*" if you want to trust all host.
    
    Session session = Session.getInstance(props, new javax.mail.Authenticator() {
        protected PasswordAuthentication getPasswordAuthentication() {
            return new PasswordAuthentication(email, password)
        }
    })
    
    // Set up message.
    MimeMessage message = new MimeMessage(session)
    message.setFrom(new InternetAddress(from))
    if(to?.trim()){
        message.addRecipients(Message.RecipientType.TO, new InternetAddress(to))
    }
    if(cc?.trim()){
        message.addRecipients(Message.RecipientType.CC, new InternetAddress(cc))
    }
    if(bcc?.trim()){
        message.addRecipients(Message.RecipientType.BCC, new InternetAddress(bcc))
    }
    message.setSubject(subject)
    message.setContent(content, mimeType)
    
    try {
        // Send mail.
        Transport.send(message )
    } catch (MessagingException e) {
        e.printStackTrace()
        statusCode=500
        requestErrorMessageFromClient = JsonOutput.toJson([islemBasariliMi: false, hataMesaji: 'Mail gönderirken hata oluştu:' + e.getMessage(), hataKodu:'01-ERR-04'])
        return
    }
    
    statusCode=200
    requestErrorMessageFromClient = JsonOutput.toJson([islemBasariliMi: true, hataMesaji: '', hataKodu:''])
} catch (MessagingException e) {
    e.printStackTrace()
    statusCode=500
    requestErrorMessageFromClient = JsonOutput.toJson([islemBasariliMi: false, hataMesaji: 'Mail gönderirken hata oluştu:' + e.getMessage(), hataKodu:'01-ERR-05'])
    return
}

Explanation

This script performs the following operations:

1. JSON Parse: JSON message coming from request body is parsed
2. Sender Validation: Sender information is checked and converted to email address
3. Recipient Check: At least one recipient (TO, CC or BCC) must exist
4. Email Sending: Email is sent via SMTP
5. Response Creation: Operation result is returned as response in JSON format

Sample Request

{
  "gonderen": "bilgi.apinizer",
  "alicilar": "[e-mail]",
  "bilgiAlicilar": null,
  "gizliAlicilar": null,
  "konu": "test",
  "icerik": "test",
  "icerikTuru": "text/html;charset=utf-8"
}

Sample Response

{
  "islemBasariliMi": true,
  "hataMesaji": "",
  "hataKodu": ""
}

This script should be run on the request line (Request Policy) because it uses the requestBodyTextFromClient and requestErrorMessageFromClient variables.