import java.util.*;
import java.util.logging.*;
import javax.mail.*;

public class EmailSession {

    private Session session;
    private Store store;
    private Folder inbox;
    private int messageCount;
    private int unreadMessageCount;
    private List<Message> unreadMessages;

    public EmailSession() {
        Properties props = new Properties();
        props.setProperty("mail.store.protocol", MyProps.getProperty("mail.store.protocol"));
        try {
            session = Session.getInstance(props, null);
            store = session.getStore();
            store.connect(VMT.getProperty("mail.host"), MyProps.getProperty("mail.user"), MyProps.getProperty("mail.password"));
            inbox = store.getFolder(MyProps.getProperty("mail.foldername"));
            inbox.open(Folder.READ_ONLY);
            messageCount = inbox.getMessageCount();
            List<Message> messages;
            if (messageCount > 100) {
                Logger.getLogger(EmailSession.class.getName()).log(Level.WARNING,
                        "More than 100 messages");
                messages = Arrays.asList(inbox.getMessages(1, 100));
            } else {
                messages = Arrays.asList(inbox.getMessages());
            }
            unreadMessages = new ArrayList<>();
            unreadMessageCount = 0;
            for (Message message : messages) {
                boolean isUnreadMessage = true;
                for (Flags.Flag flag : message.getFlags().getSystemFlags()) {
                    if (flag == Flags.Flag.SEEN) {
                        isUnreadMessage = false;
                        break;
                    }
                }
                if (isUnreadMessage) {
                    unreadMessages.add(message);
                    unreadMessageCount++;
                }
            }
            inbox.close(true);
        } catch (NoSuchProviderException ex) {
            Logger.getLogger(EmailSession.class.getName()).log(Level.SEVERE, null, ex);
        } catch (MessagingException ex) {
            Logger.getLogger(EmailSession.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    public Folder getInbox() {
        return inbox;
    }

    public int getMessageCount() {
        return messageCount;
    }

    public int getUnreadMessageCount() {
        return unreadMessageCount;
    }

    public List<Message> getUnreadMessages() {
        return unreadMessages;
    }

    public boolean close() {
        try {
            store.close();
            return true;
        } catch (MessagingException ex) {
            Logger.getLogger(EmailSession.class.getName()).log(Level.SEVERE, null, ex);

            return false;
        }
    }

}