xmpp: bot refactoring

2 files changed, 214 insertions, 106 deletions

diff --git a/juick-xmpp/src/main/java/com/juick/components/JuickBot.java b/juick-xmpp/src/main/java/com/juick/components/JuickBot.java
index 8a82063a..15e1fe66 100644
--- a/juick-xmpp/src/main/java/com/juick/components/JuickBot.java
+++ b/juick-xmpp/src/main/java/com/juick/components/JuickBot.java
@@ -17,11 +17,16 @@
 
 package com.juick.components;
 
+import com.juick.Tag;
 import com.juick.User;
 import com.juick.components.s2s.StanzaListener;
 import com.juick.formatters.PlainTextFormatter;
+import com.juick.server.helpers.TagStats;
+import com.juick.server.protocol.annotation.UserCommand;
 import com.juick.service.*;
 import org.apache.commons.lang3.StringUtils;
+import org.apache.commons.lang3.math.NumberUtils;
+import org.apache.commons.lang3.reflect.MethodUtils;
 import org.ocpsoft.prettytime.PrettyTime;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -35,9 +40,9 @@ import rocks.xmpp.core.stanza.model.errors.Condition;
 
 import javax.annotation.PostConstruct;
 import javax.inject.Inject;
-import java.util.Collections;
-import java.util.List;
-import java.util.Locale;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.*;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;
@@ -61,15 +66,19 @@ public class JuickBot implements StanzaListener, AutoCloseable {
     private PrettyTime pt;
 
     @Inject
-    public MessagesService messagesService;
+    private MessagesService messagesService;
     @Inject
-    public UserService userService;
+    private UserService userService;
     @Inject
-    public TagService tagService;
+    private TagService tagService;
     @Inject
-    public PMQueriesService pmQueriesService;
+    private PMQueriesService pmQueriesService;
     @Inject
-    public ShowQueriesService showQueriesService;
+    private ShowQueriesService showQueriesService;
+    @Inject
+    private PrivacyQueriesService privacyQueriesService;
+    @Inject
+    private SubscriptionService subscriptionService;
 
     @PostConstruct
     public void init() {
@@ -82,40 +91,6 @@ public class JuickBot implements StanzaListener, AutoCloseable {
         return jid;
     }
 
-    private static final String HELPTEXT =
-            "@username text - Send private message\n"
-            + "*tagname Blah-blah-blah - Post a message with tag 'tagname'\n"
-            + "#1234 Blah-blah-blah - Answer to message #1234\n"
-            + "#1234/5 Blah - Answer to reply #1234/5\n"
-            + "! #1234 - Recommend post\n"
-            + "\n"
-            + "# - Show last messages from your feed (## - second page, ...)\n"
-            + "@ - Show recomendations and popular personal blogs\n"
-            + "* - Show your tags\n"
-            + "#1234 - Show message\n"
-            + "#1234+ - Show message with replies\n"
-            + "@username - Show user's info\n"
-            + "@username+ - Show user's info and last 10 messages\n"
-            + "@username *tag - User's messages with this tag\n"
-            + "*tag - Show last 10 messages with this tag\n"
-            + "? blah - Search posts for 'blah'\n"
-            + "? @username blah - Searching among user\'s posts for 'blah'\n"
-            + "D #123 - Delete message\n"
-            + "D #123/45 - Delete reply\n"
-            + "DL - Delete last message/reply\n"
-            + "S - Show your subscriptions\n"
-            + "S #123 - Subscribe to message replies\n"
-            + "S @username - Subscribe to user's blog\n"
-            + "U #123 - Unsubscribe from comments\n"
-            + "U @username - Unsubscribe from user's blog\n"
-            + "BL - Show your blacklist\n"
-            + "BL @username - Add/delete user to/from your blacklist\n"
-            + "BL *tag - Add/delete tag to/from your blacklist\n"
-            + "ON / OFF - Enable/disable subscriptions delivery\n"
-            + "PING - Pong\n"
-            + "\n"
-            + "Read more: http://juick.com/help/";
-
     public boolean incomingPresence(Presence p) {
         final String username = p.getTo().getLocal();
         final boolean toJuick = username.equals(jid.getLocal());
@@ -245,7 +220,11 @@ public class JuickBot implements StanzaListener, AutoCloseable {
         }
 
         if (username.equals(jid.getLocal())) {
-            return incomingMessageJuick(user_from, msg);
+            try {
+                return incomingMessageJuick(user_from, msg);
+            } catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
+               return false;
+            }
         }
 
         int uid_to = userService.getUIDbyName(username);
@@ -308,67 +287,69 @@ public class JuickBot implements StanzaListener, AutoCloseable {
 
         return false;
     }
-    private static Pattern regexPM = Pattern.compile("^\\@(\\S+)\\s+([\\s\\S]+)$");
 
-    public boolean incomingMessageJuick(User user_from, Message msg) {
+    public Optional<String> processCommand(User user, Jid from, String input) throws InvocationTargetException,
+            IllegalAccessException, NoSuchMethodException {
+        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));
+                }
+            }
+            return Optional.of((String) getClass().getMethod(cmd.get().getName(), User.class, Jid.class, String[].class)
+                    .invoke(this, user, from, groups.toArray(new String[groups.size()])));
+        }
+        return Optional.empty();
+    }
+    public boolean incomingMessageJuick(User user_from, Message msg) throws IllegalAccessException, NoSuchMethodException, InvocationTargetException {
         String command = msg.getBody().trim();
         int commandlen = command.length();
 
         // COMPATIBILITY
         if (commandlen > 7 && command.substring(0, 3).equalsIgnoreCase("PM ")) {
             command = command.substring(3).trim();
-            commandlen = command.length();
         }
 
-        if (commandlen == 4) {
-            if (command.equalsIgnoreCase("PING")) {
-                commandPing(msg);
-                return true;
-            } else if (command.equalsIgnoreCase("HELP")) {
-                commandHelp(msg);
-                return true;
-            }
-        } else if (commandlen == 5 && command.equalsIgnoreCase("LOGIN")) {
-            commandLogin(msg, user_from);
-            return true;
-        } else if (command.charAt(0) == '@') {
-            Matcher matchPM = regexPM.matcher(command);
-            if (matchPM.find()) {
-                String user_to = matchPM.group(1);
-                String msgtxt = matchPM.group(2);
-                commandPM(msg, user_from, user_to, msgtxt);
-                return true;
-            }
-        } else if (commandlen == 2 && command.equalsIgnoreCase("BL")) {
-            commandBLShow(msg, user_from);
-            return true;
-        } else if (commandlen == 2 && command.equalsIgnoreCase("#+")) {
-            return commandLast(msg.getFrom());
-        } else if (command.equalsIgnoreCase("@")) {
-            return commandUsers(msg.getFrom());
-        }
-
-        return false;
+        Optional<String> result = processCommand(user_from, msg.getFrom(), command);
+        result.ifPresent(r -> sendReply(msg.getFrom(), r));
+        return result.isPresent();
     }
 
-    private void commandPing(Message m) {
-        Presence p = new Presence(m.getFrom());
+    @UserCommand(pattern = "^ping$", patternFlags = Pattern.CASE_INSENSITIVE,
+            help = "PING - returns you a PONG")
+    public String commandPing(User user, Jid from, String[] input) {
+        Presence p = new Presence(from);
         p.setFrom(jid);
         p.setPriority((byte) 10);
         xmpp.sendOut(ClientPresence.from(p));
-
-        sendReply(m.getFrom(), "PONG");
+        return "PONG";
     }
 
-    private void commandHelp(Message m) {
-        sendReply(m.getFrom(), HELPTEXT);
+    @UserCommand(pattern = "^help$", patternFlags = Pattern.CASE_INSENSITIVE,
+            help = "HELP - returns this help message")
+    public String commandHelp(User user, Jid from, String[] input) {
+        return Arrays.stream(getClass().getDeclaredMethods())
+                .filter(m -> m.isAnnotationPresent(UserCommand.class))
+                .map(m -> m.getAnnotation(UserCommand.class).help())
+                .collect(Collectors.joining("\n"));
     }
 
-    private void commandLogin(Message m, User user_from) {
-        sendReply(m.getFrom(), "http://juick.com/login?hash=" + userService.getHashByUID(user_from.getUid()));
+    @UserCommand(pattern = "^login$", patternFlags = Pattern.CASE_INSENSITIVE,
+            help = "LOGIN - log in to Juick website")
+    public String commandLogin(User user_from, Jid from, String[] input) {
+        return "http://juick.com/login?hash=" + userService.getHashByUID(user_from.getUid());
     }
-
-    private void commandPM(Message m, User user_from, String user_to, String body) {
+    @UserCommand(pattern = "^\\@(\\S+)\\s+([\\s\\S]+)$", help = "@username message - send PM to username")
+    public String commandPM(User user_from, Jid from, String... arguments) {
+        String user_to = arguments[0];
+        String body = arguments[1];
         int ret = 0;
 
         int uid_to = 0;
@@ -425,20 +406,15 @@ public class JuickBot implements StanzaListener, AutoCloseable {
             }
         }
 
-        Message reply = new Message();
-        reply.setFrom(m.getTo());
-        reply.setTo(m.getFrom());
         if (ret == 200) {
-            reply.setType(m.getType());
-            reply.setBody("Private message sent");
+            return "Private message sent";
         } else {
-            reply.setType(Message.Type.ERROR);
-            reply.setBody("Error " + ret);
+            return "Error " + ret;
         }
-        xmpp.sendOut(ClientMessage.from(reply));
     }
-
-    private void commandBLShow(Message m, User user_from) {
+    @UserCommand(pattern = "^bl$", patternFlags = Pattern.CASE_INSENSITIVE,
+            help = "BL - Show your blacklist")
+    public String commandBLShow(User user_from, Jid from, String... arguments) {
         List<User> blusers = userService.getUserBLUsers(user_from.getUid());
         List<String> bltags = tagService.getUserBLTags(user_from.getUid());
 
@@ -461,21 +437,20 @@ public class JuickBot implements StanzaListener, AutoCloseable {
             txt = "You don't have any users or tags in your blacklist.";
         }
 
-        sendReply(m.getFrom(), txt);
+        return txt;
     }
 
-    boolean commandLast(Jid jidFrom) {
-        User user = userService.getUserByJID(jidFrom.asBareJid().toEscapedString());
-        sendReply(jidFrom, "Last messages:\n"
-                + printMessages(messagesService.getAll(user.getUid(), 0), true));
-        return true;
+    @UserCommand(pattern = "^#\\+$", help = "#+ - Show last Juick messages")
+    public String commandLast(User user_from, Jid from, String... arguments) {
+        return "Last messages:\n"
+                + printMessages(messagesService.getAll(user_from.getUid(), 0), true);
     }
 
-    boolean commandUsers(Jid jidFrom) {
+    @UserCommand(pattern = "@", help = "@ - Show recommendations and popular personal blogs")
+    public String commandUsers(User user_from, Jid from, String... arguments) {
         StringBuilder msg = new StringBuilder();
         msg.append("Recommended blogs");
-        User currentUser = userService.getUserByJID(jidFrom.asBareJid().toEscapedString());
-        List<String> recommendedUsers = showQueriesService.getRecommendedUsers(currentUser);
+        List<String> recommendedUsers = showQueriesService.getRecommendedUsers(user_from);
         if (recommendedUsers.size() > 0) {
             for (String user : recommendedUsers) {
                 msg.append("\n@").append(user);
@@ -492,8 +467,139 @@ public class JuickBot implements StanzaListener, AutoCloseable {
         } else {
             msg.append("\nNo top users. Empty DB? ;)");
         }
-        sendReply(jidFrom, msg.toString());
-        return true;
+        return msg.toString();
+    }
+    @UserCommand(pattern = "^bl\\s+@([^\\s\\n\\+]+)", patternFlags = Pattern.CASE_INSENSITIVE,
+            help = "BL @username - add @username to your blacklist")
+    public String blacklistUser(User user_from, Jid from, String... arguments) {
+        User blUser = userService.getUserByName(arguments[0]);
+        if (blUser != null) {
+            PrivacyQueriesService.PrivacyResult result = privacyQueriesService.blacklistUser(user_from, blUser);
+            if (result == PrivacyQueriesService.PrivacyResult.Added) {
+                return "User added to your blacklist";
+            } else {
+                return "User removed from your blacklist";
+            }
+        }
+        return "User not found";
+    }
+    @UserCommand(pattern = "^bl\\s\\*(\\S+)$", patternFlags = Pattern.CASE_INSENSITIVE,
+            help = "BL *tag - add *tag to your blacklist")
+    public String blacklistTag(User user_from, Jid from, String... arguments) {
+        User blUser = userService.getUserByName(arguments[0]);
+        if (blUser != null) {
+            Tag tag = tagService.getTag(arguments[0], false);
+            if (tag != null) {
+                PrivacyQueriesService.PrivacyResult result = privacyQueriesService.blacklistTag(user_from, tag);
+                if (result == PrivacyQueriesService.PrivacyResult.Added) {
+                    return "Tag added to your blacklist";
+                } else {
+                    return "Tag removed from your blacklist";
+                }
+            }
+        }
+        return "Tag not found";
+    }
+    @UserCommand(pattern = "\\*", help = "* - Show your tags")
+    public String commandTags(User currentUser, Jid from, 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 msg;
+    }
+    @UserCommand(pattern = "S", help = "S - Show your subscriptions")
+    public String commandSubscriptions(User currentUser, Jid from, 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 msg;
+    }
+    @UserCommand(pattern = "!", help = "! - Show your favorite messages")
+    public String commandFavorites(User currentUser, Jid from, String... args) {
+        List<Integer> mids = messagesService.getUserRecommendations(currentUser.getUid(), 0);
+        if (mids.size() > 0) {
+            List<com.juick.Message> messages = messagesService.getMessages(mids);
+            return "Favorite messages: \n" + String.join("\n", messages.stream()
+                    .sorted(Collections.reverseOrder())
+                    .map(PlainTextFormatter::formatPost)
+                    .collect(Collectors.toList()));
+        }
+        return "No favorite messages, try to \"like\" something ;)";
+    }
+    @UserCommand(pattern = "^(s|u)\\s+\\*(\\S+)$", help = "S *tag - subscribe to tag" +
+            "\nU *tag - unsubscribe from tag", patternFlags = Pattern.CASE_INSENSITIVE)
+    public String commandSubscribeTag(User user, Jid from, String... args) {
+        boolean subscribe = args[0].equalsIgnoreCase("s");
+        Tag tag = tagService.getTag(args[1], true);
+        if (subscribe) {
+            if (subscriptionService.subscribeTag(user, tag)) {
+                return "Subscribed";
+            }
+        } else {
+            if (subscriptionService.unSubscribeTag(user, tag)) {
+                return "Unsubscribed from " + tag.getName();
+            }
+            return "You was not subscribed to " + tag.getName();
+        }
+        return "Error";
+    }
+    @UserCommand(pattern = "^(s|u)\\s+#(\\d+)$", help = "S #1234 - subscribe to comments",
+            patternFlags = Pattern.CASE_INSENSITIVE)
+    public String commandSubscribeMessage(User user, String... args) {
+        boolean subscribe = args[0].equalsIgnoreCase("s");
+        int mid = NumberUtils.toInt(args[1], 0);
+        if (messagesService.getMessage(mid) != null) {
+            if (subscribe) {
+                if (subscriptionService.subscribeMessage(mid, user.getUid())) {
+                    return "Subscribed";
+                }
+            } else {
+                if (subscriptionService.unSubscribeMessage(mid, user.getUid())) {
+                    return "Unsubscribed from #" + mid;
+                }
+                return "You was not subscribed to #" + mid;
+            }
+        }
+        return "Error";
+    }
+    @UserCommand(pattern = "^(on|off)$", patternFlags = Pattern.CASE_INSENSITIVE,
+            help = "ON/OFF - Enable/disable subscriptions delivery")
+    public String commandOnOff(User user, String[] input) {
+        UserService.ActiveStatus newStatus;
+        String retValUpdated;
+        if (input[0].toLowerCase().equals("on")) {
+            newStatus = UserService.ActiveStatus.Active;
+            retValUpdated = "Notifications are activated for " + user.getJid();
+        } else {
+            newStatus = UserService.ActiveStatus.Inactive;
+            retValUpdated = "Notifications are disabled for " + user.getJid();
+        }
+
+        if (userService.setActiveStatusForJID(user.getJid(), newStatus)) {
+            return retValUpdated;
+        } else {
+            return String.format("Subscriptions status for %s was not changed", user.getJid());
+        }
+    }
+    @UserCommand(pattern = "^\\@([^\\s\\n\\+]+)(\\+?)$",
+            help = "@username+ - Show user's info and last 10 messages (@username++ - second page, ..)")
+    public String commandUser(User user, String... arguments) {
+        User blogUser = userService.getUserByName(arguments[0]);
+        int page = arguments[1].length();
+        if (blogUser.getUid() > 0) {
+            List<Integer> mids = messagesService.getUserBlog(blogUser.getUid(), 0, page);
+            List<com.juick.Message> messages = messagesService.getMessages(mids);
+            return String.format("Last messages from @%s:\n%s", arguments[0],
+                    String.join("\n", messages.stream()
+                            .map(PlainTextFormatter::formatPost).collect(Collectors.toList())));
+        }
+        return "User not found";
     }
 
     void sendReply(Jid jidTo, String txt) {
diff --git a/juick-xmpp/src/main/java/com/juick/components/s2s/Connection.java b/juick-xmpp/src/main/java/com/juick/components/s2s/Connection.java
index 6a796307..8157e046 100644
--- a/juick-xmpp/src/main/java/com/juick/components/s2s/Connection.java
+++ b/juick-xmpp/src/main/java/com/juick/components/s2s/Connection.java
@@ -17,6 +17,7 @@
 
 package com.juick.components.s2s;
 
+import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.juick.components.XMPPServer;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -127,6 +128,7 @@ public class Connection {
         writer = new OutputStreamWriter(socket.getOutputStream(), StandardCharsets.UTF_8);
     }
 
+    @JsonIgnore
     public Socket getSocket() {
         return socket;
     }