src/main/java/cc/fascinated/bat/command/impl/server/channel/ChannelCommand.java

@@ -0,0 +1,22 @@
+package cc.fascinated.bat.command.impl.server.channel;
+
+import cc.fascinated.bat.command.BatCommand;
+import cc.fascinated.bat.command.CommandInfo;
+import lombok.NonNull;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.ApplicationContext;
+import org.springframework.stereotype.Component;
+
+/**
+ * @author Nick (okNick)
+ */
+@Component
+@CommandInfo(name = "channel", description = "View or set information about a channel")
+public class ChannelCommand extends BatCommand {
+    @Autowired
+    public ChannelCommand(@NonNull ApplicationContext context) {
+        super.addSubCommand(context.getBean(ViewTopicSubCommand.class));
+        super.addSubCommand(context.getBean(SetTopicSubCommand.class));
+        super.addSubCommand(context.getBean(RemoveTopicSubCommand.class));
+    }
+}

src/main/java/cc/fascinated/bat/command/impl/server/channel/RemoveTopicSubCommand.java

@@ -0,0 +1,53 @@
+package cc.fascinated.bat.command.impl.server.channel;
+
+import cc.fascinated.bat.command.BatSubCommand;
+import cc.fascinated.bat.command.CommandInfo;
+import cc.fascinated.bat.common.EmbedUtils;
+import cc.fascinated.bat.model.BatGuild;
+import cc.fascinated.bat.model.BatUser;
+import lombok.NonNull;
+import net.dv8tion.jda.api.Permission;
+import net.dv8tion.jda.api.entities.Member;
+import net.dv8tion.jda.api.entities.channel.Channel;
+import net.dv8tion.jda.api.entities.channel.concrete.TextChannel;
+import net.dv8tion.jda.api.entities.channel.middleman.MessageChannel;
+import net.dv8tion.jda.api.interactions.commands.OptionType;
+import net.dv8tion.jda.api.interactions.commands.SlashCommandInteraction;
+import org.springframework.stereotype.Component;
+
+/**
+ * @author Nick (okNick)
+ */
+@Component
+@CommandInfo(name = "removetopic", description = "Remove the topic of a channel", requiredPermissions = Permission.MANAGE_CHANNEL)
+public class RemoveTopicSubCommand extends BatSubCommand {
+    public RemoveTopicSubCommand() {
+        super.addOption(OptionType.CHANNEL, "channel", "The channel to remove the topic of", false);
+    }
+
+    @Override
+    public void execute(BatGuild guild, @NonNull BatUser user, @NonNull MessageChannel channel, Member member, @NonNull SlashCommandInteraction interaction) {
+        Channel target = interaction.getOption("channel") == null ? channel : interaction.getOption("channel").getAsChannel();
+        if (!(target instanceof TextChannel textChannel)) {
+            interaction.replyEmbeds(EmbedUtils.errorEmbed()
+                            .setDescription("<#%s> is not a text channel!".formatted(target.getId()))
+                            .build())
+                    .queue();
+            return;
+        }
+
+        if (textChannel.getTopic() == null) {
+            interaction.replyEmbeds(EmbedUtils.errorEmbed()
+                            .setDescription("<#%s> does not have a topic!".formatted(textChannel.getId()))
+                            .build())
+                    .queue();
+            return;
+        }
+
+        textChannel.getManager().setTopic(null).queue();
+        interaction.replyEmbeds(EmbedUtils.successEmbed()
+                .setDescription("Successfully removed the topic of <#%s>".formatted(textChannel.getId()))
+                .build()
+        ).queue();
+    }
+}

src/main/java/cc/fascinated/bat/command/impl/server/channel/SetTopicSubCommand.java

@@ -0,0 +1,55 @@
+package cc.fascinated.bat.command.impl.server.channel;
+
+import cc.fascinated.bat.command.BatSubCommand;
+import cc.fascinated.bat.command.CommandInfo;
+import cc.fascinated.bat.common.EmbedUtils;
+import cc.fascinated.bat.model.BatGuild;
+import cc.fascinated.bat.model.BatUser;
+import lombok.NonNull;
+import net.dv8tion.jda.api.Permission;
+import net.dv8tion.jda.api.entities.Member;
+import net.dv8tion.jda.api.entities.channel.Channel;
+import net.dv8tion.jda.api.entities.channel.concrete.TextChannel;
+import net.dv8tion.jda.api.entities.channel.middleman.MessageChannel;
+import net.dv8tion.jda.api.interactions.commands.OptionType;
+import net.dv8tion.jda.api.interactions.commands.SlashCommandInteraction;
+import org.springframework.stereotype.Component;
+
+/**
+ * @author Nick (okNick)
+ */
+@Component
+@CommandInfo(name = "settopic", description = "Set the topic of a channel", requiredPermissions = Permission.MANAGE_CHANNEL)
+public class SetTopicSubCommand extends BatSubCommand {
+    public SetTopicSubCommand() {
+        super.addOption(OptionType.STRING, "topic", "The topic to set", true);
+        super.addOption(OptionType.CHANNEL, "channel", "The channel to set the topic of", false);
+    }
+
+    @Override
+    public void execute(BatGuild guild, @NonNull BatUser user, @NonNull MessageChannel channel, Member member, @NonNull SlashCommandInteraction interaction) {
+        Channel target = interaction.getOption("channel") == null ? channel : interaction.getOption("channel").getAsChannel();
+        if (!(target instanceof TextChannel textChannel)) {
+            interaction.replyEmbeds(EmbedUtils.errorEmbed()
+                            .setDescription("<#%s> is not a text channel!".formatted(target.getId()))
+                            .build())
+                    .queue();
+            return;
+        }
+
+        String topic = interaction.getOption("topic").getAsString();
+        if (topic.length() > 1024) {
+            interaction.replyEmbeds(EmbedUtils.errorEmbed()
+                            .setDescription("The topic must be less than 1024 characters!")
+                            .build())
+                    .queue();
+            return;
+        }
+
+        textChannel.getManager().setTopic(topic).queue();
+        interaction.replyEmbeds(EmbedUtils.successEmbed()
+                .setDescription("Successfully set the topic of <#%s> to: \"%s\"".formatted(textChannel.getId(), topic))
+                .build()
+        ).queue();
+    }
+}

src/main/java/cc/fascinated/bat/command/impl/server/channel/ViewTopicSubCommand.java

@@ -0,0 +1,52 @@
+package cc.fascinated.bat.command.impl.server.channel;
+
+import cc.fascinated.bat.command.BatSubCommand;
+import cc.fascinated.bat.command.CommandInfo;
+import cc.fascinated.bat.common.EmbedUtils;
+import cc.fascinated.bat.model.BatGuild;
+import cc.fascinated.bat.model.BatUser;
+import lombok.NonNull;
+import net.dv8tion.jda.api.entities.Member;
+import net.dv8tion.jda.api.entities.channel.Channel;
+import net.dv8tion.jda.api.entities.channel.concrete.TextChannel;
+import net.dv8tion.jda.api.entities.channel.middleman.MessageChannel;
+import net.dv8tion.jda.api.interactions.commands.OptionType;
+import net.dv8tion.jda.api.interactions.commands.SlashCommandInteraction;
+import org.springframework.stereotype.Component;
+
+/**
+ * @author Nick (okNick)
+ */
+@Component
+@CommandInfo(name = "viewtopic", description = "View the topic of a channel")
+public class ViewTopicSubCommand extends BatSubCommand {
+    public ViewTopicSubCommand() {
+        super.addOption(OptionType.CHANNEL, "channel", "The channel to view the topic of", false);
+    }
+
+    @Override
+    public void execute(BatGuild guild, @NonNull BatUser user, @NonNull MessageChannel channel, Member member, @NonNull SlashCommandInteraction interaction) {
+        Channel target = interaction.getOption("channel") == null ? channel : interaction.getOption("channel").getAsChannel();
+        if (!(target instanceof TextChannel textChannel)) {
+            interaction.replyEmbeds(EmbedUtils.errorEmbed()
+                            .setDescription("<#%s> is not a text channel!".formatted(target.getId()))
+                            .build())
+                    .queue();
+            return;
+        }
+
+        String topic = textChannel.getTopic();
+        if (topic == null) {
+            interaction.replyEmbeds(EmbedUtils.errorEmbed()
+                            .setDescription("<#%s> does not have a topic!".formatted(textChannel.getId()))
+                            .build())
+                    .queue();
+            return;
+        }
+
+        interaction.replyEmbeds(EmbedUtils.genericEmbed()
+                .setDescription("The topic of <#%s> is: \"%s\"".formatted(textChannel.getId(), topic))
+                .build()
+        ).queue();
+    }
+}

src/main/java/cc/fascinated/bat/service/CommandService.java

@@ -1,7 +1,10 @@
 package cc.fascinated.bat.service;
 
 import cc.fascinated.bat.Consts;
-import cc.fascinated.bat.command.*;
+import cc.fascinated.bat.command.BatCommand;
+import cc.fascinated.bat.command.BatCommandExecutor;
+import cc.fascinated.bat.command.BatSubCommand;
+import cc.fascinated.bat.command.Category;
 import cc.fascinated.bat.common.EmbedUtils;
 import cc.fascinated.bat.model.BatGuild;
 import cc.fascinated.bat.model.BatUser;
@@ -75,10 +78,10 @@ public class CommandService extends ListenerAdapter {
 
         // Unregister all commands that Discord has but we don't
         jda.retrieveCommands().complete().forEach(command -> {
-            CommandInfo commandInfo = commands.get(command.getName()).getCommandInfo();
-            if (commands.containsKey(command.getName()) && (commandInfo.category().isHidden() || commandInfo.botOwnerOnly())) {
+            BatCommand batCommand = commands.get(command.getName());
+            if (batCommand == null) {
                 jda.deleteCommandById(command.getId()).complete(); // Unregister the command on Discord
-                log.info("Unregistered hidden command \"{}\" from Discord", command.getName());
+                log.info("Unregistered unknown command \"{}\" from Discord", command.getName());
                 return;
             }
             if (commands.containsKey(command.getName())) {