Tried to add a progress book which only shows the quest progress upon using a command.

src/main/java/com/alttd/altitudequests/commands/CommandManager.java

@@ -35,7 +35,8 @@ public class CommandManager implements CommandExecutor, TabExecutor {
                 new CommandChangeQuest(),
                 new CommandTurnIn(),
                 new CommandSetQuest(),
-                new CommandGetReward());
+                new CommandGetReward(),
+                new CommandProgress());
     }
 
     @Override

src/main/java/com/alttd/altitudequests/commands/subcommands/CommandProgress.java

@@ -1,15 +1,55 @@
 package com.alttd.altitudequests.commands.subcommands;
 
+import com.alttd.altitudequests.AQuest;
 import com.alttd.altitudequests.commands.SubCommand;
+import com.alttd.altitudequests.config.MessagesConfig;
+import com.alttd.altitudequests.objects.Quest;
+import com.alttd.altitudequests.util.ProgressBookOpener;
 import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.bukkit.scheduler.BukkitRunnable;
 
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
+import java.util.UUID;
 
 public class CommandProgress extends SubCommand {
     //TODO show player current quest progress
+
+    private static final Set<UUID> inProcess = new HashSet<>();
     @Override
     public boolean onCommand(CommandSender commandSender, String[] args) {
-        return false;
+        if (!(commandSender instanceof Player player)) {
+            commandSender.sendMiniMessage(MessagesConfig.NO_CONSOLE, null);
+            return true;
+        }
+        if (player == null || !player.hasPlayedBefore()) {
+            commandSender.sendMiniMessage(getHelpMessage(), null);
+            return true;
+        }
+        Quest dailyQuest = Quest.getDailyQuest(player.getUniqueId());
+        if (dailyQuest == null) {
+            player.sendMiniMessage("<red>You have no active quests.</red>", null);
+            return true;
+        }
+        if (dailyQuest.isDone()) {
+            player.sendMiniMessage("<green>You already completed the daily quest.</green>", null);
+            return true;
+        }
+        final UUID uniqueId = player.getUniqueId();
+        if (inProcess.contains(uniqueId)) {
+            return true;
+        }
+        inProcess.add(uniqueId);
+        new BukkitRunnable() {
+            @Override
+            public void run() {
+                ProgressBookOpener.openProgressBook(player);
+                inProcess.remove(uniqueId);
+            }
+        }.runTaskAsynchronously(AQuest.getInstance());
+        return true;
     }
 
     @Override

src/main/java/com/alttd/altitudequests/config/Config.java

@@ -21,6 +21,8 @@ public final class Config extends AbstractConfig {
 
     public static String QUEST_BOOK_AUTHOR = "<magenta>Scruff</magenta>";
     public static String QUEST_BOOK_TITLE = "<green>Quest Title</green>";
+    public static String PRGORESS_BOOK_AUTHOR = "<magenta>Scruff</magenta>";
+    public static String PROGRESS_BOOK_TITLE = "<green>Quest Title</green>";
     public static List<String> QUEST_PAGES = List.of("""
             <bold><gold>Hey <player></gold></bold>
     
@@ -31,6 +33,16 @@ public final class Config extends AbstractConfig {
             * <step_2>: <step_2_progress>/<step_2_total>
             
             <click:run_command:/aquest turnin><turn_in_text></click>
+            """);
+    public static List<String> PROGRESS_PAGES = List.of("""
+            <bold><gold>Hey <player></gold></bold>
+    
+            Your quest progress:
+            * Quest: <quest>
+            * Type: <variant>
+            * <step_1>: <step_1_progress>/<step_1_total>
+            * <step_2>: <step_2_progress>/<step_2_total>
+            
             """);
     private static void loadBook() {
         QUEST_BOOK_AUTHOR = config.getString("book.author", QUEST_BOOK_AUTHOR);
@@ -38,6 +50,12 @@ public final class Config extends AbstractConfig {
         QUEST_PAGES = config.getStringList("book.pages", QUEST_PAGES);
     }
 
+    private static void loadProgressBook() {
+        QUEST_BOOK_AUTHOR = config.getString("progressBook.author", PRGORESS_BOOK_AUTHOR);
+        QUEST_BOOK_TITLE = config.getString("progressBook.title", PROGRESS_BOOK_TITLE);
+        QUEST_PAGES = config.getStringList("progressBook.pages", PROGRESS_PAGES);
+    }
+
     public static String NPC_NAME = "<light_purple>Scruff</light_purple>";
     public static boolean DEBUG = false;
     private static void loadSettings() {

src/main/java/com/alttd/altitudequests/util/ProgressBookOpener.java

@@ -0,0 +1,53 @@
+package com.alttd.altitudequests.util;
+
+import com.alttd.altitudequests.config.Config;
+import com.alttd.altitudequests.objects.Quest;
+import net.kyori.adventure.inventory.Book;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.minimessage.MiniMessage;
+import net.kyori.adventure.text.minimessage.tag.resolver.Placeholder;
+import net.kyori.adventure.text.minimessage.tag.resolver.TagResolver;
+import org.bukkit.entity.Player;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class ProgressBookOpener {
+
+    private static final MiniMessage miniMessage = MiniMessage.miniMessage();
+
+    public static void openProgressBook(Player player) {
+        player.openBook(getProgressBook(player));
+    }
+
+    private static Book getProgressBook (Player player) {
+        return Book.builder()
+                .author(miniMessage.deserialize(Config.PRGORESS_BOOK_AUTHOR))
+                .title(miniMessage.deserialize(Config.PROGRESS_BOOK_TITLE))
+                .pages(getPages(player))
+                .build();
+    }
+
+    private static final Component error = MiniMessage.miniMessage().deserialize("<red>Error retrieving quest data</red>");
+    private static List<Component> getPages(Player player) {
+        Quest dailyQuest = Quest.getDailyQuest(player.getUniqueId());
+        if (dailyQuest == null)
+            return List.of(error);
+        TagResolver tagResolver = TagResolver.resolver(
+                TagResolver.resolver(Placeholder.component("player", player.name())),
+                TagResolver.resolver(Placeholder.component("quest", dailyQuest.getDisplayName())),
+                TagResolver.resolver(Placeholder.component("variant", dailyQuest.getVariant().getName())),
+                dailyQuest.getTagResolvers()
+        );
+        List<String> pages = new ArrayList<>();
+        if (dailyQuest.isDone())
+            pages.addAll(dailyQuest.getDonePages());
+        else
+            pages.addAll(dailyQuest.getQuestPages());
+        pages.addAll(Config.PROGRESS_PAGES);
+        return (pages.stream()
+                .map(page -> miniMessage.deserialize(page, tagResolver))
+                .collect(Collectors.toList()));
+    }
+}