package ushi.util;

import java.util.*;
import java.text.*;
import javax.mail.*;
import javax.mail.internet.*;

public class MailPopper {

    public static final int RECEIVE_OK = 0;
    public static final int RECEIVE_ERROR_MESSAGING = 1;
    public static final int RECEIVE_ERROR_PROVIDER = 2;
    public static final int RECEIVE_ERROR_MISSING_HOST = 11;
    public static final int RECEIVE_ERROR_MISSING_ACCOUNT = 12;
    public static final int RECEIVE_ERROR_MISSING_PASSWORD = 13;

    protected String hostName = null;
    protected String account = null;
    protected String password = null;

    protected MailEntry[] entries = null;

    public MailPopper(){ }

    public MailPopper(String hostName, String account, String password){
	setHostName(hostName);
	setAccount(account);
	setPassword(password);
    }

    public void setHostName(String v){ hostName = v; }
    public void setAccount(String v){ account = v; }
    public void setPassword(String v){ password = v; }

    public int receive(){
	//  初期設定
	Properties props = new Properties();
	Session sess = Session.getDefaultInstance(props, null);

	//  接続
	Store store;
	try {
	    store = sess.getStore("pop3");
	} catch(NoSuchProviderException e){
	    e.printStackTrace();
	    return RECEIVE_ERROR_PROVIDER;
	}

	try {
	    store.connect(hostName, 110, account, password);

	    Folder rootFolder = store.getDefaultFolder();
	    Folder inbox = rootFolder.getFolder("INBOX");       //  これのみ
	    inbox.open(Folder.READ_ONLY);

	    Message[] messages = inbox.getMessages();     //  全部取得
	    entries = new MailEntry[messages.length];
	    for(int i=0; i<messages.length; i++){
		entries[i] = new MailEntry(messages[i]);
	    }

	    inbox.close(false); //  メールは消さない
	    store.close();
	} catch(MessagingException e){
	    e.printStackTrace();
	    return RECEIVE_ERROR_MESSAGING;
	} catch(java.io.IOException e){
	    e.printStackTrace();
	    return RECEIVE_ERROR_MESSAGING;
	}

	return RECEIVE_OK;
    }

    /**
     * 受信したメールの数を返します。受信前に呼ぶと-1を返します。
     */
    public int count(){
	return (entries == null) ? -1 : entries.length;
    }

    /**
     * インデックスindexのメッセージオブジェクトを返します。
     */
    public MailEntry getEntry(int index){
	return (entries == null) ? null : entries[index];
    }

    /*
	//  一括表示
	System.out.println("メール:" + inbox.getMessageCount() + "通");
	Message[] allMsg = inbox.getMessages();     //  全部取得

	for (int i = 0; i < allMsg.length; i++ ) {
	    System.out.println("----");
	    System.out.println("No." + Integer.toString(i + 1));
	    System.out.println("----");
	    System.out.println("Subject : " + allMsg[i].getSubject());
	    System.out.println("Date : " +
			       DateFormat.getDateTimeInstance()
			       .format(allMsg[i].getSentDate()));
	    Address[] from = allMsg[i].getFrom();
	    Address[] to =
		allMsg[i].getRecipients(Message.RecipientType.TO);
	    if (from != null) {
		for (int n = 0; n < from.length; n++) {
		    System.out.println("From : " + from[n]);
		}
	    }
	    if (to != null) {
		for (int n = 0; n < to.length; n++) {
		    System.out.println("To : " + from[n]);
		}
	    }
	    System.out.println();
	    Object body = allMsg[i].getContent();
	    if (body != null) {
		System.out.println(body.toString());
	    }
	}
    }
    */
}