Create /top-helper-ai slash command

application/src/main/java/org/togetherjava/tjbot/features/Features.java

@@ -73,6 +73,7 @@
 import org.togetherjava.tjbot.features.tophelper.TopHelpersCommand;
 import org.togetherjava.tjbot.features.tophelper.TopHelpersMessageListener;
 import org.togetherjava.tjbot.features.tophelper.TopHelpersPurgeMessagesRoutine;
+import org.togetherjava.tjbot.features.tophelper.ai.AITopHelperCommand;
 
 import java.util.ArrayList;
 import java.util.Collection;
@@ -192,6 +193,7 @@ public static Collection<Feature> createFeatures(JDA jda, Database database, Con
         features.add(new BookmarksCommand(bookmarksSystem));
         features.add(new ChatGptCommand(chatGptService, helpSystemHelper));
         features.add(new JShellCommand(jshellEval));
+        features.add(new AITopHelperCommand(chatGptService));
 
         FeatureBlacklist<Class<?>> blacklist = blacklistConfig.normal();
         return blacklist.filterStream(features.stream(), Object::getClass).toList();

application/src/main/java/org/togetherjava/tjbot/features/tophelper/ai/AITopHelperCommand.java

@@ -0,0 +1,160 @@
+package org.togetherjava.tjbot.features.tophelper.ai;
+
+import net.dv8tion.jda.api.EmbedBuilder;
+import net.dv8tion.jda.api.entities.MessageHistory;
+import net.dv8tion.jda.api.entities.User;
+import net.dv8tion.jda.api.entities.channel.concrete.ForumChannel;
+import net.dv8tion.jda.api.entities.channel.concrete.ThreadChannel;
+import net.dv8tion.jda.api.events.interaction.command.SlashCommandInteractionEvent;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import org.togetherjava.tjbot.features.CommandVisibility;
+import org.togetherjava.tjbot.features.SlashCommandAdapter;
+import org.togetherjava.tjbot.features.chatgpt.ChatGptService;
+
+import java.awt.*;
+import java.time.OffsetDateTime;
+import java.time.YearMonth;
+import java.util.*;
+import java.util.List;
+import java.util.concurrent.CompletableFuture;
+import java.util.stream.Collectors;
+
+public class AITopHelperCommand extends SlashCommandAdapter {
+    private static final Logger logger = LoggerFactory.getLogger(AITopHelperCommand.class);
+    private static final String COMMAND_NAME = "top-helper-ai";
+    private static final String QUESTIONS_CHANNEL_NAME = "questions";
+    private static final String CHATGPT_PROMPT =
+            """
+                    The following contains user IDs and their message. Using the messages provided by each user,
+                    which user ID was the most helpful/answered the question? If there are no meaningful messages, you must still choose somebody.
+                    ONLY provide the user ID of that person and the reason. Do not reply with anything else. Reply in the format userID|reason
+                    %s
+                    """;
+
+    private final ChatGptService chatGptService;
+
+    public AITopHelperCommand(ChatGptService chatGptService) {
+        super(COMMAND_NAME,
+                "Uses AI to determine who the current top helper is from the beginning of the month",
+                CommandVisibility.GUILD);
+        this.chatGptService = chatGptService;
+    }
+
+    @Override
+    public void onSlashCommand(SlashCommandInteractionEvent event) {
+        List<ForumChannel> channels =
+                event.getJDA().getForumChannelsByName(QUESTIONS_CHANNEL_NAME, true);
+
+        if (channels.isEmpty()) {
+            event.reply("No forum " + QUESTIONS_CHANNEL_NAME + " found").queue();
+            return;
+        }
+
+        List<ThreadChannel> questions = channels.getFirst().getThreadChannels();
+
+        if (questions.isEmpty()) {
+            event.reply("No thread channels found").queue();
+            return;
+        }
+
+        event.deferReply().queue();
+        determineTopHelper(event, questions);
+    }
+
+    private void determineTopHelper(SlashCommandInteractionEvent event,
+            List<ThreadChannel> questions) {
+        List<String> potentialTopHelpers = new ArrayList<>();
+
+        List<CompletableFuture<Void>> futures = questions.stream()
+            .filter(question -> !question.getTimeCreated().isBefore(getFirstDayOfMonth()))
+            .map(question -> processQuestionAsync(question, potentialTopHelpers))
+            .toList();
+
+        CompletableFuture.allOf(futures.toArray(new CompletableFuture[0])).join();
+
+        sendCommandResponse(event, potentialTopHelpers);
+    }
+
+    private CompletableFuture<Void> processQuestionAsync(ThreadChannel question,
+            List<String> potentialTopHelpers) {
+        return MessageHistory.getHistoryFromBeginning(question)
+            .submit()
+            .thenApply(MessageHistory::getRetrievedHistory)
+            .thenAccept(history -> {
+                StringBuilder allMessages = new StringBuilder();
+                history.forEach(message -> {
+                    User author = message.getAuthor();
+                    if (author.getIdLong() != question.getOwnerIdLong() && !author.isBot()) {
+                        String content = message.getContentStripped();
+                        allMessages.append(author.getIdLong())
+                            .append(": ")
+                            .append(content)
+                            .append("\n\n");
+                    }
+                });
+
+                if (!allMessages.isEmpty()) {
+                    Optional<String> topHelper =
+                            chatGptService.ask(CHATGPT_PROMPT.formatted(allMessages.toString()));
+                    topHelper.ifPresent(potentialTopHelpers::add);
+                } else {
+                    logger.trace("No messages found");
+                }
+            });
+    }
+
+    private void sendCommandResponse(SlashCommandInteractionEvent event,
+            List<String> potentialTopHelpers) {
+        Map<String, Integer> topHelpers = calculateTopHelpers(potentialTopHelpers);
+
+        String response = topHelpers.entrySet().stream().map(entry -> {
+            String result = entry.getKey();
+            String[] parts = result.split("\\|");
+            String userId = parts[0];
+            int count = entry.getValue();
+            try {
+                User user = event.getJDA().getUserById(userId);
+                if (user != null) {
+                    return user.getAsMention() + " " + count;
+                }
+                return null;
+            } catch (NumberFormatException e) {
+                System.err.println(e.getMessage());
+                logger.debug("Invalid user ID encountered: {}", userId);
+                return null;
+            }
+        }).filter(Objects::nonNull).collect(Collectors.joining("\n"));
+
+        EmbedBuilder eb = new EmbedBuilder().setColor(Color.CYAN)
+            .setTitle("Top Helpers")
+            .setDescription(response.isEmpty() ? "None at the moment" : response)
+            .setFooter("The higher the number next to their name, the better the helper they are");
+
+        event.getHook().editOriginalEmbeds(eb.build()).queue();
+    }
+
+    private static Map<String, Integer> calculateTopHelpers(List<String> potentialTopHelpers) {
+        Map<String, Integer> frequencyMap = new HashMap<>();
+        for (String helper : potentialTopHelpers) {
+            String userId = helper.split("\\|")[0];
+            if (frequencyMap.containsKey(userId)) {
+                int count = frequencyMap.get(userId) + 1;
+                frequencyMap.put(userId, count);
+            } else {
+                frequencyMap.put(userId, 1);
+            }
+        }
+        return frequencyMap.entrySet()
+            .stream()
+            .sorted(Map.Entry.<String, Integer>comparingByValue().reversed())
+            .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue, (e1, e2) -> e1,
+                    LinkedHashMap::new));
+    }
+
+    private static OffsetDateTime getFirstDayOfMonth() {
+        OffsetDateTime now = OffsetDateTime.now();
+        return YearMonth.from(now).atDay(1).atStartOfDay().atOffset(now.getOffset());
+    }
+}