package com.atlassian.jira.service.util.handler;

import com.atlassian.mail.MailUtils;

import org.apache.log4j.Category;

import java.util.Date;

import javax.mail.Message;
import javax.mail.MessagingException;

/**
 * A message handler to purge unhandled messages from the mailbox
 * once they exceed a specified age.
 */
public class PurgeHandler extends AbstractMessageHandler
{
    private static final Category log = Category.getInstance(PurgeHandler.class);

	/** Maximum age (in days) to keep messages. */
    public int maxAge = 14;

    private static final String KEY_MAXAGE = "maxage";


    public void init(Map params)
    {
        log.debug("PurgeHandler.init(params: " + params + ")");

        super.init(params);

        if (params.containsKey(KEY_MAXAGE))
        {
	    try {
            	maxAge = Integer.parseInt((String) params.get(KEY_MAXAGE));
	    } catch (NumberFormatException e) {
		// ignore it
        	log.warn("Invalid maxage parameter: " + params.get(KEY_MAXAGE));
	    }
        }
    }

    public boolean handleMessage(Message message) throws MessagingException
    {
        if (catchEmail != null && !MailUtils.hasRecipient(catchEmail, message))
        {
            return false;
        }

	Date now = new Date();
	Date sentDate = message.getSentDate();
	if (sentDate <= now - (maxAge * 24 * 60 * 60 * 1000)) {
            log.debug("Deleting mail '" + message.getSubject() + "', sent " + sentDate);
	    return true;  // delete the email
	}
	return false;

    }

}