// https://mvnrepository.com/artifact/com.sun.mail/javax.mail
@Grab(group='com.sun.mail', module='javax.mail', version='1.6.2')

import javax.mail.Folder
import javax.mail.Message
import javax.mail.Session
import javax.mail.Store
import javax.mail.URLName
import java.text.DateFormat
import java.text.SimpleDateFormat
import java.util.regex.Matcher
import java.util.regex.Pattern
import javax.mail.Address


String host = 'pop.mail.yahoo.co.jp'
String user = '******'
String pass = '******'
String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory"

Properties properties = System.properties
properties.setProperty("mail.pop3.socketFactory.class", SSL_FACTORY)
properties.setProperty('mail.pop3.port', '995')
properties.setProperty('mail.pop3.socketFactory.port', '995')
properties.setProperty("mail.pop3.ssl.trust", "*")  // Trust all Servers

Session session = Session.getDefaultInstance(properties)

URLName urln = new URLName('pop3', host, 995, null, user, pass)
Store store = session.getStore(urln)

store.connect()
Folder inbox = store.getFolder('Inbox')
inbox.open(Folder.READ_ONLY)

DateFormat sdf = new SimpleDateFormat('yyyy/MM/dd')
Date today = new Date()
String todayYmd = sdf.format(today)
println("今日の日付 : ${todayYmd} の投稿メール")
println("メッセージ数 : ${inbox.messageCount}")

Pattern ptn = ~/^(?<day>[0-9]{1,2})日の日記$/

Message[] messages = inbox.getMessages()
messages.each { Message it->
    Matcher mt = ptn.matcher(it.subject)
    Date sentDate = it.getSentDate()
    if (mt.find() && sentDate != null) {
        println("Subject : ${it.getSubject()}")
        String sentYmd = sdf.format(sentDate)
        int day = mt.group('day').toInteger()
        if (todayYmd == sentYmd) {
            println(" From    : ${it.getFrom()}")
            println(" ReplyTo : ${it.getReplyTo()}")
        }
    }
}

inbox.close(true)
store.close()