Examples with MessageRemovalListener com.fsck.k9.mailstore.MessageRemovalListener used on opensource projects

Example 1 with MessageRemovalListener

use of com.fsck.k9.mailstore.MessageRemovalListener in project k-9 by k9mail.

the class MessagingController method downloadMessages.

/**
     * Fetches the messages described by inputMessages from the remote store and writes them to
     * local storage.
     *
     * @param account
     *         The account the remote store belongs to.
     * @param remoteFolder
     *         The remote folder to download messages from.
     * @param localFolder
     *         The {@link LocalFolder} instance corresponding to the remote folder.
     * @param inputMessages
     *         A list of messages objects that store the UIDs of which messages to download.
     * @param flagSyncOnly
     *         Only flags will be fetched from the remote store if this is {@code true}.
     * @param purgeToVisibleLimit
     *         If true, local messages will be purged down to the limit of visible messages.
     *
     * @return The number of downloaded messages that are not flagged as {@link Flag#SEEN}.
     *
     * @throws MessagingException
     */
private int downloadMessages(final Account account, final Folder remoteFolder, final LocalFolder localFolder, List<Message> inputMessages, boolean flagSyncOnly, boolean purgeToVisibleLimit) throws MessagingException {
    final Date earliestDate = account.getEarliestPollDate();
    // now
    Date downloadStarted = new Date();
    if (earliestDate != null) {
        Timber.d("Only syncing messages after %s", earliestDate);
    }
    final String folder = remoteFolder.getName();
    int unreadBeforeStart = 0;
    try {
        AccountStats stats = account.getStats(context);
        unreadBeforeStart = stats.unreadMessageCount;
    } catch (MessagingException e) {
        Timber.e(e, "Unable to getUnreadMessageCount for account: %s", account);
    }
    List<Message> syncFlagMessages = new ArrayList<>();
    List<Message> unsyncedMessages = new ArrayList<>();
    final AtomicInteger newMessages = new AtomicInteger(0);
    List<Message> messages = new ArrayList<>(inputMessages);
    for (Message message : messages) {
        evaluateMessageForDownload(message, folder, localFolder, remoteFolder, account, unsyncedMessages, syncFlagMessages, flagSyncOnly);
    }
    final AtomicInteger progress = new AtomicInteger(0);
    final int todo = unsyncedMessages.size() + syncFlagMessages.size();
    for (MessagingListener l : getListeners()) {
        l.synchronizeMailboxProgress(account, folder, progress.get(), todo);
    }
    Timber.d("SYNC: Have %d unsynced messages", unsyncedMessages.size());
    messages.clear();
    final List<Message> largeMessages = new ArrayList<>();
    final List<Message> smallMessages = new ArrayList<>();
    if (!unsyncedMessages.isEmpty()) {
        /*
             * Reverse the order of the messages. Depending on the server this may get us
             * fetch results for newest to oldest. If not, no harm done.
             */
        Collections.sort(unsyncedMessages, new UidReverseComparator());
        int visibleLimit = localFolder.getVisibleLimit();
        int listSize = unsyncedMessages.size();
        if ((visibleLimit > 0) && (listSize > visibleLimit)) {
            unsyncedMessages = unsyncedMessages.subList(0, visibleLimit);
        }
        FetchProfile fp = new FetchProfile();
        if (remoteFolder.supportsFetchingFlags()) {
            fp.add(FetchProfile.Item.FLAGS);
        }
        fp.add(FetchProfile.Item.ENVELOPE);
        Timber.d("SYNC: About to fetch %d unsynced messages for folder %s", unsyncedMessages.size(), folder);
        fetchUnsyncedMessages(account, remoteFolder, unsyncedMessages, smallMessages, largeMessages, progress, todo, fp);
        String updatedPushState = localFolder.getPushState();
        for (Message message : unsyncedMessages) {
            String newPushState = remoteFolder.getNewPushState(updatedPushState, message);
            if (newPushState != null) {
                updatedPushState = newPushState;
            }
        }
        localFolder.setPushState(updatedPushState);
        Timber.d("SYNC: Synced unsynced messages for folder %s", folder);
    }
    Timber.d("SYNC: Have %d large messages and %d small messages out of %d unsynced messages", largeMessages.size(), smallMessages.size(), unsyncedMessages.size());
    unsyncedMessages.clear();
    /*
         * Grab the content of the small messages first. This is going to
         * be very fast and at very worst will be a single up of a few bytes and a single
         * download of 625k.
         */
    FetchProfile fp = new FetchProfile();
    //TODO: Only fetch small and large messages if we have some
    fp.add(FetchProfile.Item.BODY);
    //        fp.add(FetchProfile.Item.FLAGS);
    //        fp.add(FetchProfile.Item.ENVELOPE);
    downloadSmallMessages(account, remoteFolder, localFolder, smallMessages, progress, unreadBeforeStart, newMessages, todo, fp);
    smallMessages.clear();
    /*
         * Now do the large messages that require more round trips.
         */
    fp = new FetchProfile();
    fp.add(FetchProfile.Item.STRUCTURE);
    downloadLargeMessages(account, remoteFolder, localFolder, largeMessages, progress, unreadBeforeStart, newMessages, todo, fp);
    largeMessages.clear();
    /*
         * Refresh the flags for any messages in the local store that we didn't just
         * download.
         */
    refreshLocalMessageFlags(account, remoteFolder, localFolder, syncFlagMessages, progress, todo);
    Timber.d("SYNC: Synced remote messages for folder %s, %d new messages", folder, newMessages.get());
    if (purgeToVisibleLimit) {
        localFolder.purgeToVisibleLimit(new MessageRemovalListener() {

            @Override
            public void messageRemoved(Message message) {
                for (MessagingListener l : getListeners()) {
                    l.synchronizeMailboxRemovedMessage(account, folder, message);
                }
            }
        });
    }
    // If the oldest message seen on this sync is newer than
    // the oldest message seen on the previous sync, then
    // we want to move our high-water mark forward
    // this is all here just for pop which only syncs inbox
    // this would be a little wrong for IMAP (we'd want a folder-level pref, not an account level pref.)
    // fortunately, we just don't care.
    Long oldestMessageTime = localFolder.getOldestMessageDate();
    if (oldestMessageTime != null) {
        Date oldestExtantMessage = new Date(oldestMessageTime);
        if (oldestExtantMessage.before(downloadStarted) && oldestExtantMessage.after(new Date(account.getLatestOldMessageSeenTime()))) {
            account.setLatestOldMessageSeenTime(oldestExtantMessage.getTime());
            account.save(Preferences.getPreferences(context));
        }
    }
    return newMessages.get();
}