Initialize all components from configuration

1 files changed, 590 insertions, 0 deletions

diff --git a/src/main/java/com/juick/CommandsManager.java b/src/main/java/com/juick/CommandsManager.java
new file mode 100644
index 00000000..f7c37b8b
--- /dev/null
+++ b/src/main/java/com/juick/CommandsManager.java
@@ -0,0 +1,590 @@
+/*
+ * Copyright (C) 2008-2020, Juick
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.juick;
+
+import com.juick.model.Message;
+import com.juick.model.Tag;
+import com.juick.model.User;
+import com.juick.util.formatters.PlainTextFormatter;
+import com.juick.model.CommandResult;
+import com.juick.model.TagStats;
+import com.juick.www.api.SystemActivity;
+import com.juick.util.annotation.UserCommand;
+import com.juick.util.HttpUtils;
+import com.juick.www.WebApp;
+import com.juick.service.*;
+import com.juick.service.activities.DeleteMessageEvent;
+import com.juick.service.component.*;
+import com.juick.util.MessageUtils;
+import org.apache.commons.collections4.CollectionUtils;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.commons.lang3.math.NumberUtils;
+import org.apache.commons.lang3.reflect.MethodUtils;
+import org.apache.commons.lang3.tuple.Pair;
+import org.apache.commons.text.StringEscapeUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.ApplicationEventPublisher;
+
+import javax.annotation.Nonnull;
+import javax.inject.Inject;
+import java.io.IOException;
+import java.lang.reflect.Method;
+import java.net.URI;
+import java.util.*;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import java.util.stream.Collectors;
+
+/**
+ *
+ * @author ugnich
+ */
+public class CommandsManager {
+    private static final Logger logger = LoggerFactory.getLogger(CommandsManager.class);
+    @Inject
+    private MessagesService messagesService;
+    @Inject
+    private UserService userService;
+    @Inject
+    private TagService tagService;
+    @Inject
+    private PMQueriesService pmQueriesService;
+    @Inject
+    private ShowQueriesService showQueriesService;
+    @Inject
+    private PrivacyQueriesService privacyQueriesService;
+    @Inject
+    private SubscriptionService subscriptionService;
+    @Value("${upload_tmp_dir:#{systemEnvironment['TEMP'] ?: '/tmp'}}")
+    private String tmpDir;
+    @Inject
+    private ApplicationEventPublisher applicationEventPublisher;
+    @Inject
+    private ImagesService imagesService;
+    @Inject
+    private WebApp webApp;
+    @Inject
+    private ActivityPubManager activityPubManager;
+
+    public CommandResult processCommand(@Nonnull User user, String data, @Nonnull URI attachment) throws Exception {
+        if (!user.isAnonymous()) {
+            userService.updateLastSeen(user);
+        }
+        String strippedData = StringUtils.stripStart(data, null);
+        if (strippedData.startsWith("?OTR")) {
+            return CommandResult.fromString("?OTR Error: we are not using OTR");
+        }
+        String input = StringEscapeUtils.unescapeHtml4(MessageUtils.stripNonSafeUrls(strippedData));
+        Optional<Method> cmd = MethodUtils.getMethodsListWithAnnotation(getClass(), UserCommand.class).stream()
+                .filter(m -> Pattern.compile(m.getAnnotation(UserCommand.class).pattern(),
+                        m.getAnnotation(UserCommand.class).patternFlags()).matcher(input).matches())
+                .findFirst();
+        if (cmd.isPresent()) {
+            Matcher matcher = Pattern.compile(cmd.get().getAnnotation(UserCommand.class).pattern(),
+                    cmd.get().getAnnotation(UserCommand.class).patternFlags()).matcher(input);
+            List<String> groups = new ArrayList<>();
+            while (matcher.find()) {
+                for (int i = 1; i <= matcher.groupCount(); i++) {
+                    groups.add(matcher.group(i));
+                }
+            }
+            CommandResult commandResult = (CommandResult) getClass().getMethod(cmd.get().getName(), User.class, URI.class, String[].class)
+                    .invoke(this, user, attachment, groups.toArray(new String[groups.size()]));
+            if (StringUtils.isNotEmpty(commandResult.getText())) {
+                return commandResult;
+            }
+        }
+        Pair<String, List<Tag>> tags = tagService.fromString(input);
+        if (tags.getRight().size() > 5) {
+            return CommandResult.fromString("Sorry, 5 tags maximum.");
+        }
+        // new message
+        String body = tags.getLeft().trim();
+        if (body.length() > 4096) {
+            return CommandResult.fromString("Sorry, 4096 characters maximum.");
+        }
+        boolean haveAttachment = StringUtils.isNotEmpty(attachment.toString());
+        String attachmentFName = null;
+        String attachmentType = null;
+        if (haveAttachment) {
+             attachmentFName = attachment.getScheme().equals("juick") ? attachment.getHost()
+                    : HttpUtils.downloadImage(attachment.toURL(), tmpDir).getHost();
+             attachmentType = attachmentFName.substring(attachmentFName.length() - 3);
+        }
+        if (StringUtils.isEmpty(body) && !haveAttachment) {
+            return CommandResult.fromString("Empty message");
+        }
+        int mid = messagesService.createMessage(user.getUid(), body, attachmentType, tags.getRight());
+        if (haveAttachment) {
+            String fname = String.format("%d.%s", mid, attachmentType);
+            imagesService.saveImageWithPreviews(attachmentFName, fname);
+        }
+        Message msg = messagesService.getMessage(mid).orElseThrow(IllegalStateException::new);
+        msg.getUser().setAvatar(webApp.getAvatarUrl(msg.getUser()));
+        subscriptionService.subscribeMessage(msg, user);
+
+        applicationEventPublisher.publishEvent(new SystemEvent(this, SystemActivity.read(user, msg)));
+        applicationEventPublisher.publishEvent(new SystemEvent(this,
+                SystemActivity.message(user, msg, subscriptionService.getSubscribedUsers(msg.getUser().getUid(), msg))));
+        return CommandResult.build(msg,
+                "New message posted.\n#" + msg.getMid() + " https://juick.com/m/" + msg.getMid(),
+                String.format("[New message](%s) posted", PlainTextFormatter.formatUrl(msg)));
+    }
+
+    @UserCommand(pattern = "^ping$", patternFlags = Pattern.CASE_INSENSITIVE,
+            help = "PING - returns you a PONG")
+    public CommandResult commandPing(User user, URI attachment, String[] input) {
+        applicationEventPublisher.publishEvent(new PingEvent(this, user));
+        return CommandResult.fromString("PONG");
+    }
+
+    @UserCommand(pattern = "^help$", patternFlags = Pattern.CASE_INSENSITIVE,
+            help = "HELP - returns this help message")
+    public CommandResult commandHelp(User user, URI attachment, String[] input) {
+        return CommandResult.fromString(Arrays.stream(getClass().getDeclaredMethods())
+                .filter(m -> m.isAnnotationPresent(UserCommand.class))
+                .map(m -> m.getAnnotation(UserCommand.class).help())
+                .collect(Collectors.joining("\n")));
+    }
+
+    @UserCommand(pattern = "^login$", patternFlags = Pattern.CASE_INSENSITIVE,
+            help = "LOGIN - log in to Juick website")
+    public CommandResult commandLogin(User user_from, URI attachment, String[] input) {
+        return CommandResult.fromString("http://juick.com/login?hash=" + userService.getHashByUID(user_from.getUid()));
+    }
+    @UserCommand(pattern = "^\\@(\\S+)\\s+([\\s\\S]+)$", help = "@username message - send PM to username")
+    public CommandResult commandPM(User user_from, URI attachment, String... arguments) {
+        String body = arguments[1];
+
+        User user_to = userService.getUserByName(arguments[0]);
+        user_to.setAvatar(webApp.getAvatarUrl(user_to));
+        if (!user_to.isAnonymous()) {
+            if (!userService.isInBLAny(user_to.getUid(), user_from.getUid())) {
+                if (pmQueriesService.createPM(user_from.getUid(), user_to.getUid(), body)) {
+                    Message jmsg = new Message();
+                    jmsg.setUser(user_from);
+                    jmsg.setTo(user_to);
+                    jmsg.setText(body);
+                    applicationEventPublisher.publishEvent(new SystemEvent(this,
+                            SystemActivity.message(user_from, jmsg, Collections.singletonList(user_to))));
+                    return CommandResult.fromString("Private message sent");
+                }
+            }
+        }
+        return CommandResult.fromString("Error");
+    }
+    @UserCommand(pattern = "^bl$", patternFlags = Pattern.CASE_INSENSITIVE,
+            help = "BL - Show your blacklist")
+    public CommandResult commandBLShow(User user_from, URI attachment, String... arguments) {
+        List<User> blusers = userService.getUserBLUsers(user_from.getUid());
+        List<String> bltags = tagService.getUserBLTags(user_from.getUid());
+
+        String txt = StringUtils.EMPTY;
+        if (bltags.size() > 0) {
+            for (String bltag : bltags) {
+                txt += "*" + bltag + "\n";
+            }
+
+            if (blusers.size() > 0) {
+                txt += "\n";
+            }
+        }
+        if (blusers.size() > 0) {
+            for (User bluser : blusers) {
+                txt += "@" + bluser.getName() + "\n";
+            }
+        }
+        if (txt.isEmpty()) {
+            txt = "You don't have any users or tags in your blacklist.";
+        }
+
+        return CommandResult.fromString(txt);
+    }
+
+    @UserCommand(pattern = "^#\\+$", help = "#+ - Show last Juick messages")
+    public CommandResult commandLast(User user_from, URI attachment, String... arguments) {
+        return CommandResult.fromString("Last messages:\n"
+                + printMessages(user_from, messagesService.getAll(user_from.getUid(), 0), true));
+    }
+
+    @UserCommand(pattern = "@", help = "@ - Show recommendations and popular personal blogs")
+    public CommandResult commandUsers(User user_from, URI attachment, String... arguments) {
+        StringBuilder msg = new StringBuilder();
+        msg.append("Recommended blogs");
+        List<String> recommendedUsers = showQueriesService.getRecommendedUsers(user_from);
+        if (recommendedUsers.size() > 0) {
+            for (String user : recommendedUsers) {
+                msg.append("\n@").append(user);
+            }
+        } else {
+            msg.append("\nNo recommendations now. Subscribe to more blogs. ;)");
+        }
+        msg.append("\n\nTop 10 personal blogs:");
+        List<String> topUsers = showQueriesService.getTopUsers();
+        if (topUsers.size() > 0) {
+            for (String user : topUsers) {
+                msg.append("\n@").append(user);
+            }
+        } else {
+            msg.append("\nNo top users. Empty DB? ;)");
+        }
+        return CommandResult.fromString(msg.toString());
+    }
+    @UserCommand(pattern = "^bl\\s+@([^\\s\\n\\+]+)", patternFlags = Pattern.CASE_INSENSITIVE,
+            help = "BL @username - add @username to your blacklist")
+    public CommandResult blacklistUser(User user_from, URI attachment, String... arguments) {
+        User blUser = userService.getUserByName(arguments[0]);
+        if (!blUser.isAnonymous()) {
+            PrivacyQueriesService.PrivacyResult result = privacyQueriesService.blacklistUser(user_from, blUser);
+            if (result == PrivacyQueriesService.PrivacyResult.Added) {
+                return CommandResult.fromString("User added to your blacklist");
+            } else {
+                return CommandResult.fromString("User removed from your blacklist");
+            }
+        }
+        return CommandResult.fromString("User not found");
+    }
+    @UserCommand(pattern = "^bl\\s\\*(\\S+)$", patternFlags = Pattern.CASE_INSENSITIVE,
+            help = "BL *tag - add *tag to your blacklist")
+    public CommandResult blacklistTag(User user_from, URI attachment, String... arguments) {
+        if (!user_from.isAnonymous()) {
+            Tag tag = tagService.getTag(arguments[0], false);
+            if (tag != null) {
+                PrivacyQueriesService.PrivacyResult result = privacyQueriesService.blacklistTag(user_from, tag);
+                if (result == PrivacyQueriesService.PrivacyResult.Added) {
+                    return CommandResult.fromString("Tag added to your blacklist");
+                } else {
+                    return CommandResult.fromString("Tag removed from your blacklist");
+                }
+            }
+        }
+        return CommandResult.fromString("Tag not found");
+    }
+    @UserCommand(pattern = "\\*", help = "* - Show your tags")
+    public CommandResult commandTags(User currentUser, URI attachment, String... args) {
+        List<TagStats> tags = tagService.getUserTagStats(currentUser.getUid());
+        String msg = "Your tags: (tag - messages)\n" +
+                tags.stream()
+                        .map(t -> String.format("\n*%s - %d", t.getTag().getName(), t.getUsageCount())).collect(Collectors.joining());
+        return CommandResult.fromString(msg);
+    }
+    @UserCommand(pattern = "S", help = "S - Show your subscriptions", patternFlags = Pattern.CASE_INSENSITIVE)
+    public CommandResult commandSubscriptions(User currentUser, URI attachment, String... args) {
+        List<User> friends = userService.getUserFriends(currentUser.getUid());
+        List<String> tags = subscriptionService.getSubscribedTags(currentUser);
+        String msg = friends.size() > 0 ? "You are subscribed to users:" + friends.stream().map(u -> "\n@" + u.getName())
+                .collect(Collectors.joining())
+                : "You are not subscribed to any user.";
+        msg += tags.size() > 0 ? "\nYou are subscribed to tags:" + tags.stream().map(t -> "\n*" + t)
+                .collect(Collectors.joining())
+                : "\nYou are not subscribed to any tag.";
+        return CommandResult.fromString(msg);
+    }
+    @UserCommand(pattern = "!", help = "! - Show your favorite messages")
+    public CommandResult commandFavorites(User currentUser, URI attachment, String... args) {
+        List<Integer> mids = messagesService.getUserRecommendations(currentUser.getUid(), 0);
+        if (mids.size() > 0) {
+            return CommandResult.fromString("Favorite messages: \n" + printMessages(currentUser, mids, false));
+        }
+        return CommandResult.fromString("No favorite messages, try to \"like\" something ;)");
+    }
+    @UserCommand(pattern = "^\\!\\s+#(\\d+)", help = "! #12345 - recommend message")
+    public CommandResult commandRecommend(User user, URI attachment, String... arguments) {
+        int mid = NumberUtils.toInt(arguments[0], 0);
+        if (mid > 0) {
+            Optional<Message> msg = messagesService.getMessage(mid);
+            if (msg.isPresent()) {
+                if (msg.get().getUser() == user) {
+                    return CommandResult.fromString("You can't recommend your own messages.");
+                }
+                MessagesService.RecommendStatus status = messagesService.recommendMessage(mid, user.getUid(), user.getUri().toASCIIString());
+                switch (status) {
+                    case Added:
+                        applicationEventPublisher.publishEvent(new SystemEvent(this, SystemActivity.like(user, msg.get(),
+                                subscriptionService.getUsersSubscribedToUserRecommendations(
+                                        user.getUid(), msg.get()))));
+                        return CommandResult.fromString("Message is added to your recommendations");
+                    case Deleted:
+                        return CommandResult.fromString("Message deleted from your recommendations.");
+                }
+            }
+            return CommandResult.fromString("Message not found");
+        }
+        return CommandResult.fromString("Message not found");
+    }
+    // TODO: target notification
+    @UserCommand(pattern = "^(s|u)\\s+\\@(\\S+)$", help = "S @username - subscribe to user" +
+            "\nU @username - unsubscribe from user", patternFlags = Pattern.CASE_INSENSITIVE)
+    public CommandResult commandSubscribeUser(User user, URI attachment, String... args) {
+        boolean subscribe = args[0].equalsIgnoreCase("s");
+        User toUser = userService.getUserByName(args[1]);
+        if (toUser.isAnonymous()) {
+            return CommandResult.fromString("User not found");
+        }
+        if (subscribe) {
+            if (subscriptionService.subscribeUser(user, toUser)) {
+                // TODO: already subscribed case
+                applicationEventPublisher.publishEvent(new SystemEvent(this,
+                        SystemActivity.follow(user, Collections.singletonList(toUser))));
+                return CommandResult.fromString("Subscribed to @" + toUser.getName());
+            }
+        } else {
+            if (subscriptionService.unSubscribeUser(user, toUser)) {
+                return CommandResult.fromString("Unsubscribed from @" + toUser.getName());
+            }
+            return CommandResult.fromString("You were not subscribed to @" + toUser.getName());
+        }
+        return CommandResult.fromString("Error");
+    }
+    @UserCommand(pattern = "^(s|u)\\s+\\*(\\S+)$", help = "S *tag - subscribe to tag" +
+            "\nU *tag - unsubscribe from tag", patternFlags = Pattern.CASE_INSENSITIVE)
+    public CommandResult commandSubscribeTag(User user, URI attachment, String... args) {
+        boolean subscribe = args[0].equalsIgnoreCase("s");
+        Tag tag = tagService.getTag(args[1], true);
+        if (subscribe) {
+            if (subscriptionService.subscribeTag(user, tag)) {
+                return CommandResult.fromString("Subscribed");
+            }
+        } else {
+            if (subscriptionService.unSubscribeTag(user, tag)) {
+                return CommandResult.fromString("Unsubscribed from " + tag.getName());
+            }
+            return CommandResult.fromString("You were not subscribed to " + tag.getName());
+        }
+        return CommandResult.fromString("Error");
+    }
+    @UserCommand(pattern = "^(s|u)\\s+#(\\d+)$", help = "S #1234 - subscribe to comments" +
+            "\nU #1234 - unsubscribe from comments", patternFlags = Pattern.CASE_INSENSITIVE)
+    public CommandResult commandSubscribeMessage(@Nonnull User user, URI attachment, String... args) {
+        boolean subscribe = args[0].equalsIgnoreCase("s");
+        int mid = NumberUtils.toInt(args[1], 0);
+        Optional<Message> msg = messagesService.getMessage(mid);
+        if (msg.isPresent()) {
+            if (subscribe) {
+                if (subscriptionService.subscribeMessage(msg.get(), user)) {
+                    applicationEventPublisher.publishEvent(
+                            new SystemEvent(this, SystemActivity.read(user, msg.get())));
+                    return CommandResult.fromString("Subscribed");
+                }
+            } else {
+                if (subscriptionService.unSubscribeMessage(mid, user.getUid())) {
+                    return CommandResult.fromString("Unsubscribed from #" + mid);
+                }
+                return CommandResult.fromString("You were not subscribed to #" + mid);
+            }
+        }
+        return CommandResult.fromString("Error");
+    }
+    @UserCommand(pattern = "^(on|off)$", patternFlags = Pattern.CASE_INSENSITIVE,
+            help = "ON/OFF - Enable/disable subscriptions delivery")
+    public CommandResult commandOnOff(User user, URI attachment, String[] input) {
+        UserService.ActiveStatus newStatus;
+        String retValUpdated;
+        if (input[0].toLowerCase().equals("on")) {
+            newStatus = UserService.ActiveStatus.Active;
+            retValUpdated = "XMPP notifications are activated";
+        } else {
+            newStatus = UserService.ActiveStatus.Inactive;
+            retValUpdated = "XMPP notifications are disabled";
+        }
+        if (userService.getAllJIDs(user).stream().allMatch(jid -> userService.setActiveStatusForJID(jid, newStatus))) {
+            return CommandResult.fromString(retValUpdated);
+        }
+        return CommandResult.fromString("Error");
+    }
+    @UserCommand(pattern = "^\\@([^\\s\\n\\+]+)(\\+?)$",
+            help = "@username+ - Show user's info and last 20 messages")
+    public CommandResult commandUser(User user, URI attachment, String... arguments) {
+        User blogUser = userService.getUserByName(arguments[0]);
+        int page = arguments[1].length();
+        if (!blogUser.isAnonymous() && !blogUser.isBanned()) {
+            List<Integer> mids = messagesService.getUserBlog(blogUser.getUid(), 0, 0);
+            return CommandResult.fromString(String.format("Last messages from @%s:\n%s", arguments[0],
+                    printMessages(user, mids, false)));
+        }
+        return CommandResult.fromString("User not found");
+    }
+    @UserCommand(pattern = "^#(\\d+)(\\+?)$", help = "#1234 - Show message (#1234+ - message with replies)")
+    public CommandResult commandShow(@Nonnull User user, URI attachment, String... arguments) {
+        boolean showReplies = arguments[1].length() > 0;
+        int mid = NumberUtils.toInt(arguments[0], 0);
+        if (mid == 0) {
+            return CommandResult.fromString("Error");
+        }
+        Optional<Message> msg = messagesService.getMessage(mid);
+        if (msg.isPresent()) {
+            if (showReplies) {
+                List<Message> replies = messagesService.getReplies(user, mid);
+                applicationEventPublisher.publishEvent(
+                        new SystemEvent(this, SystemActivity.read(user, msg.get())));
+                replies.add(0, msg.get());
+                return CommandResult.fromString(replies.stream()
+                        .map(PlainTextFormatter::formatPostSummary).collect(Collectors.joining("\n")));
+            }
+            return CommandResult.fromString(PlainTextFormatter.formatPost(msg.get()));
+        }
+        return CommandResult.fromString("Message not found");
+    }
+    @UserCommand(pattern = "^#(\\d+)\\/(\\d+)$", help = "#1234/5 - Show reply")
+    public CommandResult commandShowReply(User user, URI attachment, String... arguments) {
+        int mid = NumberUtils.toInt(arguments[0], 0);
+        int rid = NumberUtils.toInt(arguments[1], 0);
+        Message reply = messagesService.getReply(mid, rid);
+        if (reply != null) {
+            return CommandResult.fromString(PlainTextFormatter.formatPost(reply));
+        }
+        return CommandResult.fromString("Reply not found");
+    }
+    @UserCommand(pattern = "^\\*(\\S+)(\\+?)$", help = "*tag - Show last messages with tag")
+    public CommandResult commandShowTag(User user, URI attachment, String... arguments) {
+        if (StringUtils.isNotEmpty(attachment.toString())) {
+            // new message with tag
+            return CommandResult.fromString(StringUtils.EMPTY);
+        }
+        Tag tag = tagService.getTag(arguments[0], false);
+        if (tag != null) {
+            // TODO: synonyms
+            List<Integer> mids = messagesService.getTag(tag.TID, user.getUid(), 0, 10);
+            return CommandResult.fromString("Last messages with *" + tag.getName() + ":\n" + printMessages(user, mids, true));
+        }
+        return CommandResult.fromString("Tag not found");
+    }
+    @UserCommand(pattern = "^D #(\\d+)$", help = "D #1234 - Delete post", patternFlags = Pattern.CASE_INSENSITIVE)
+    public CommandResult commandDeletePost(User user, URI attachment, String... args) {
+        int mid = Integer.valueOf(args[0]);
+        Optional<Message> message = messagesService.getMessage(mid);
+        if (message.isPresent() && messagesService.deleteMessage(user.getUid(), mid)) {
+            applicationEventPublisher.publishEvent(new DeleteMessageEvent(this, message.get()));
+            return CommandResult.fromString("Message deleted");
+        }
+        return CommandResult.fromString("This is not your message");
+    }
+    @UserCommand(pattern = "^D #(\\d+)(\\.|\\-|\\/)(\\d+)$", help = "D #1234/5 - Delete comment", patternFlags = Pattern.CASE_INSENSITIVE)
+    public CommandResult commandDeleteReply(User user, URI attachment, String... args) {
+        int mid = Integer.parseInt(args[0]);
+        int rid = Integer.parseInt(args[2]);
+        if (messagesService.deleteReply(user.getUid(), mid, rid)) {
+            return CommandResult.fromString("Reply deleted");
+        } else {
+            return CommandResult.fromString("This is not your reply");
+        }
+    }
+    @UserCommand(pattern = "^(D L|DL|D LAST)$", help = "D L - Delete last message", patternFlags = Pattern.CASE_INSENSITIVE)
+    public CommandResult commandDeleteLast(User user, URI attachment, String... args) {
+        return CommandResult.fromString("Temporarily unavailable");
+    }
+    @UserCommand(pattern = "^\\?\\s+\\@([a-zA-Z0-9\\-\\.\\@]+)\\s+([\\s\\S]+)$", help = "? @user string - search in user messages")
+    public CommandResult commandSearch(User user, URI attachment, String... args) {
+        return CommandResult.fromString("Temporarily unavailable");
+    }
+    @UserCommand(pattern = "^\\?\\s+([\\s\\S]+)$", help = "? string - search in all messages")
+    public CommandResult commandSearchAll(User user, URI attachment, String... args) {
+        return CommandResult.fromString("Temporarily unavailable");
+    }
+    @UserCommand(pattern = "^(#+)$", help = "# - Show last messages from your feed (## - second page, ...)")
+    public CommandResult commandMyFeed(User user, URI attachment, String... arguments) {
+        // number of # is the page count
+        int page = arguments[0].length() - 1;
+        List<Integer> mids = messagesService.getMyFeed(user.getUid(), page, false);
+        if (mids.size() > 0) {
+            return CommandResult.fromString("Your feed: \n" + printMessages(user, mids, true));
+        }
+        return CommandResult.fromString("Your feed is empty");
+    }
+    @UserCommand(pattern = "^(#|\\.)(\\d+)((\\.|\\-|\\/)(\\d+))?\\s([\\s\\S]+)?",
+            help = "#1234 *tag *tag2 - edit tags\n#1234 text - reply to message")
+    public CommandResult EditOrReply(@Nonnull User user, @Nonnull URI attachment, String... args) throws Exception {
+        int mid = NumberUtils.toInt(args[1]);
+        int rid = NumberUtils.toInt(args[4], 0);
+        String txt = StringUtils.defaultString(args[5]);
+        Optional<Message> msg = messagesService.getMessage(mid);
+        if (!msg.isPresent()) {
+            return CommandResult.fromString("Message not found");
+        }
+        if (rid > 0) {
+            Message reply = messagesService.getReply(mid, rid);
+            if (reply == null) {
+                return CommandResult.fromString("Reply not found");
+            }
+        }
+        Pair<String, List<Tag>> messageTags = tagService.fromString(txt);
+        if (user.getUid() == msg.get().getUser().getUid() && rid == 0 && messageTags.getRight().size() > 0) {
+            if (!CollectionUtils.isEqualCollection(tagService.updateTags(mid, messageTags.getRight()), msg.get().getTags())) {
+                return CommandResult.fromString("Tags are updated");
+            } else {
+                return CommandResult.fromString("Tags are NOT updated (5 tags maximum?)");
+            }
+        } else {
+            if (txt.length() > 4096) {
+                return CommandResult.fromString("Sorry, 4096 characters maximum.");
+            }
+            boolean haveAttachment = StringUtils.isNotEmpty(attachment.toString());
+            String attachmentFName = null;
+            String attachmentType = null;
+            if (haveAttachment) {
+                if (attachment.getScheme().equals("juick")) {
+                    attachmentFName = attachment.getHost();
+                    attachmentType = attachmentFName.substring(attachmentFName.length() - 3);
+                } else {
+                    try {
+                        attachmentFName = HttpUtils.downloadImage(attachment.toURL(), tmpDir).getHost();
+                        attachmentType = attachmentFName.substring(attachmentFName.length() - 3);
+                    } catch (IOException e) {
+                        logger.warn("Can not download {}", attachment.toURL());
+                    }
+                }
+            }
+            boolean attachmentProcessed = !haveAttachment || StringUtils.isNotEmpty(attachmentType);
+            String messageText = attachmentProcessed ? txt : String.format("%s %s", txt, attachment.toASCIIString());
+            int newrid = messagesService.createReply(mid, rid, user, messageText, attachmentType);
+            if (newrid > 0) {
+                if (haveAttachment && attachmentProcessed) {
+                    String fname = String.format("%d-%d.%s", mid, newrid, attachmentType);
+                    imagesService.saveImageWithPreviews(attachmentFName, fname);
+                }
+                applicationEventPublisher.publishEvent(
+                        new SystemEvent(this, SystemActivity.read(user, msg.get())));
+                Message original = messagesService.getMessage(mid).orElseThrow(IllegalStateException::new);
+                subscriptionService.subscribeMessage(original, user);
+                Message reply = messagesService.getReply(mid, newrid);
+                if (reply.getUser().isAnonymous()) {
+                    reply.setUser(activityPubManager.personToUser(reply.getUser().getUri()));
+                } else {
+                    reply.getUser().setAvatar(webApp.getAvatarUrl(reply.getUser()));
+                }
+                applicationEventPublisher.publishEvent(
+                        new SystemEvent(this,
+                        SystemActivity.message(reply.getUser(), reply,
+                                subscriptionService.getUsersSubscribedToComments(original, reply))));
+                return CommandResult.build(reply, "Reply posted.\n#" + mid + "/" + newrid + " "
+                                + "https://juick.com/m/" + mid + "#" + newrid,
+                        String.format("[Reply](%s) posted", PlainTextFormatter.formatUrl(reply)));
+            } else {
+                return CommandResult.fromString("Message is read-only");
+            }
+        }
+    }
+
+    String printMessages(User visitor, List<Integer> mids, boolean crop) {
+        return messagesService.getMessages(visitor, mids).stream()
+                .sorted(Collections.reverseOrder())
+                .map(PlainTextFormatter::formatPostSummary).collect(Collectors.joining("\n\n"));
+    }
+}