feat: add QuizQuestion and TriviaManager classes for Java trivia game

app/src/main/java/com/togetherjava/tjplays/Bot.java

@@ -34,7 +34,8 @@ private static JDA createBot(Config config) {
     private static List<SlashCommand> getCommands(Config config) {
         return List.of(
             new PingCommand(),
-            new Game2048Command()
+            new Game2048Command(),
+            new JavaQuizCommand(config.openAIApiKey())
         );
     }
 }

app/src/main/java/com/togetherjava/tjplays/games/game2048/QuizQuestion.java

@@ -0,0 +1,27 @@
+package com.togetherjava.tjplays.games.game2048;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import java.util.List;
+
+public record QuizQuestion(
+        @JsonProperty("question") String question,
+        @JsonProperty("choices") List<String> choices,
+        @JsonProperty("correct") int correctIndex
+) {
+    @JsonCreator
+    public QuizQuestion {}
+
+    public String getQuestion() {
+        return question;
+    }
+
+    public List<String> getChoices() {
+        return choices;
+    }
+
+    public int getCorrectIndex() {
+        return correctIndex;
+    }
+}

app/src/main/java/com/togetherjava/tjplays/games/game2048/TriviaManager.java

@@ -0,0 +1,30 @@
+package com.togetherjava.tjplays.games.game2048;
+
+import com.togetherjava.tjplays.services.chatgpt.ChatGptService;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import java.util.Optional;
+
+public class TriviaManager {
+    private final ChatGptService gpt;
+    private final ObjectMapper mapper = new ObjectMapper();
+
+    public TriviaManager(String openAiKey) {
+        this.gpt = new ChatGptService(openAiKey);
+    }
+
+    public Optional<QuizQuestion> fetchRandomQuestion() {
+        String prompt = "Provide one Java trivia question as a JSON object like"
+                + " {\"question\":\"...\",\"choices\":[\"A\",\"B\",\"C\",\"D\"],\"correct\":<index>}";
+        Optional<String> raw = gpt.ask(prompt, "java quiz");
+        if (raw.isEmpty()) {
+            return Optional.empty();
+        }
+        try {
+            QuizQuestion question = mapper.readValue(raw.get(), QuizQuestion.class);
+            return Optional.of(question);
+        } catch (Exception e) {
+            return Optional.empty();
+        }
+    }
+}

app/src/main/java/com/togetherjava/tjplays/listeners/commands/JavaQuizCommand.java

@@ -0,0 +1,95 @@
+package com.togetherjava.tjplays.listeners.commands;
+
+import com.togetherjava.tjplays.games.game2048.QuizQuestion;
+import com.togetherjava.tjplays.games.game2048.TriviaManager;
+
+import net.dv8tion.jda.api.events.interaction.command.SlashCommandInteractionEvent;
+import net.dv8tion.jda.api.events.interaction.component.ButtonInteractionEvent;
+import net.dv8tion.jda.api.interactions.commands.build.Commands;
+import net.dv8tion.jda.api.interactions.components.buttons.Button;
+
+import java.util.List;
+import java.util.Optional;
+import java.util.concurrent.ConcurrentHashMap;
+
+public final class JavaQuizCommand extends SlashCommand {
+    private static final String COMMAND_NAME = "javaquiz";
+
+    private final TriviaManager triviaManager;
+    private final ConcurrentHashMap<String, QuizQuestion> activeQuestions = new ConcurrentHashMap<>();
+
+    public JavaQuizCommand(String openAiKey) {
+        super(Commands.slash(COMMAND_NAME, "Get a random Java trivia question"));
+        this.triviaManager = new TriviaManager(openAiKey);
+    }
+
+    @Override
+    public void onSlashCommand(SlashCommandInteractionEvent event) {
+        event.deferReply().queue();
+
+        Optional<QuizQuestion> question = triviaManager.fetchRandomQuestion();
+        if (question.isEmpty()) {
+            event.getHook().editOriginal("Could not fetch a quiz question. Try again later.").queue();
+            return;
+        }
+
+        QuizQuestion q = question.get();
+        List<String> choices = q.getChoices();
+
+        StringBuilder sb = new StringBuilder();
+        sb.append("**Java Quiz**\n\n");
+        sb.append(q.getQuestion()).append("\n\n");
+        for (int i = 0; i < choices.size(); i++) {
+            sb.append("`").append(i + 1).append(")` ").append(choices.get(i)).append("\n");
+        }
+
+        String messageId = event.getHook().editOriginal(sb.toString())
+                .setActionRow(
+                    Button.primary(COMMAND_NAME + "-1-" + event.getUser().getId(), "1"),
+                    Button.primary(COMMAND_NAME + "-2-" + event.getUser().getId(), "2"),
+                    Button.primary(COMMAND_NAME + "-3-" + event.getUser().getId(), "3"),
+                    Button.primary(COMMAND_NAME + "-4-" + event.getUser().getId(), "4")
+                )
+                .complete()
+                .getId();
+
+        activeQuestions.put(messageId, q);
+    }
+
+    @Override
+    public void onButtonInteraction(ButtonInteractionEvent event) {
+        String buttonId = event.getButton().getId();
+        if (buttonId == null || !buttonId.startsWith(COMMAND_NAME)) {
+            return;
+        }
+
+        if (!buttonId.contains(event.getUser().getId())) {
+            event.reply("This isn't your quiz!").setEphemeral(true).queue();
+            return;
+        }
+
+        QuizQuestion q = activeQuestions.remove(event.getMessageId());
+        if (q == null) {
+            event.reply("This quiz has already been answered.").setEphemeral(true).queue();
+            return;
+        }
+
+        int chosen = Character.getNumericValue(buttonId.charAt(COMMAND_NAME.length() + 1)) - 1;
+        boolean correct = chosen == q.getCorrectIndex();
+
+        String result = correct
+                ? "Correct! The answer is: **" + q.getChoices().get(q.getCorrectIndex()) + "**"
+                : "Wrong! The correct answer was: **" + q.getChoices().get(q.getCorrectIndex()) + "**";
+
+        String userId = event.getUser().getId();
+
+        event.editMessage(event.getMessage().getContentRaw() + "\n\n" + result)
+                .setActionRow(
+                    Button.primary(COMMAND_NAME + "-1-" + userId, "1").asDisabled(),
+                    Button.primary(COMMAND_NAME + "-2-" + userId, "2").asDisabled(),
+                    Button.primary(COMMAND_NAME + "-3-" + userId, "3").asDisabled(),
+                    Button.primary(COMMAND_NAME + "-4-" + userId, "4").asDisabled()
+                )
+                .queue();
+    }
+}

app/src/main/java/com/togetherjava/tjplays/services/chatgpt/ChatGptService.java

@@ -11,7 +11,6 @@
 
 import java.time.Duration;
 import java.util.List;
-import java.util.Objects;
 import java.util.Optional;
 
 /**

gradle.properties

@@ -0,0 +1 @@
+org.gradle.java.home=C:/Users/dudem/.gradle/jdks/eclipse_adoptium-21-amd64-windows/jdk-21.0.9+10