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package com.sun.mail.imap;

import java.io.IOException;
import java.util.Properties;

import javax.mail.Folder;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.Message;

import com.sun.mail.test.TestServer;

import org.junit.Test;
import org.junit.Rule;
import org.junit.rules.Timeout;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;

/**
 * Test untagged responses before IDLE continuation.
 */
public final class IMAPIdleUntaggedResponseTest {

    // timeout the test in case of deadlock
    @Rule
    public Timeout deadlockTimeout = new Timeout(20000);

    @Test
    public void test() {
        TestServer server = null;
        try {
            final IMAPHandler handler = new IMAPHandlerIdleExists();
            server = new TestServer(handler);
            server.start();
            Thread.sleep(1000);

            final Properties properties = new Properties();
            properties.setProperty("mail.imap.host", "localhost");
            properties.setProperty("mail.imap.port", "" + server.getPort());
            final Session session = Session.getInstance(properties);
            //session.setDebug(true);

            final Store store = session.getStore("imap");
	    Folder folder0 = null;
            try {
                store.connect("test", "test");
                final Folder folder = store.getFolder("INBOX");
		folder0 = folder;
                folder.open(Folder.READ_ONLY);

		// create a thread to make sure we're kicked out of idle
		Thread t = new Thread() {
		    public void run() {
			try {
			    Thread.sleep(1000);
			    folder.getMessageCount();
			} catch (Exception ex) {
			}
		    }
		};
		t.start();

		((com.sun.mail.imap.IMAPFolder)folder).idle();

		assertEquals("message count", 1, folder.getMessageCount());

	    } catch (Exception ex) {
		System.out.println(ex);
		//ex.printStackTrace();
		fail(ex.toString());
            } finally {
		if (folder0 != null)
		    folder0.close(false);
                store.close();
            }
        } catch (final Exception e) {
            e.printStackTrace();
            fail(e.getMessage());
        } finally {
            if (server != null) {
                server.quit();
            }
        }
    }

    /**
     * Custom handler.  Returns untagged responses before continuation,
     * followed by a flag change for one of the new messages, to make
     * sure the notification of the new message is seen.
     */
    private static final class IMAPHandlerIdleExists extends IMAPHandler {
	@Override
        public void idle() throws IOException {
            untagged("1 EXISTS");
            untagged("1 RECENT");
	    cont();
            untagged("1 FETCH (FLAGS (\\Recent \\Seen))");
	    idleWait();
	    ok();
        }
    }
}
