Adds a ChatComponent-enhanced book list

src/main/java/net/knarcraft/bookswithoutborders/command/CommandDelete.java

@@ -4,6 +4,7 @@ import net.knarcraft.bookswithoutborders.BooksWithoutBorders;
 import net.knarcraft.bookswithoutborders.state.BookDirectory;
 import net.knarcraft.bookswithoutborders.utility.BookFileHelper;
 import net.knarcraft.bookswithoutborders.utility.BookHelper;
+import net.knarcraft.bookswithoutborders.utility.InputCleaningHelper;
 import net.knarcraft.knarlib.util.TabCompletionHelper;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandSender;
@@ -39,13 +40,20 @@ public class CommandDelete implements TabExecutor {
      * @return <p>True if the book was deleted successfully</p>
      */
     boolean deleteBook(CommandSender sender, String[] args, boolean deletePublic) {
+        String command = deletePublic ? "deletepublicbook" : "deletebook";
         //List deletable files
         if (args.length == 0) {
-            BookFileHelper.printBooks(sender, deletePublic);
+            BookFileHelper.printBooks(sender, deletePublic, command, 1);
             return true;
         }
         //Delete the file
         if (args.length == 1) {
+            int page = InputCleaningHelper.parsePageNumber(args[0]);
+            if (page > 0) {
+                BookFileHelper.printBooks(sender, deletePublic, command, page);
+                return true;
+            }
+
             List<String> availableBooks = BooksWithoutBorders.getAvailableBooks(sender, deletePublic);
             if (!availableBooks.isEmpty()) {
                 performBookDeletion(sender, args[0], deletePublic);

src/main/java/net/knarcraft/bookswithoutborders/command/CommandGive.java

@@ -44,16 +44,23 @@ public class CommandGive implements TabExecutor {
      * @return <p>True if the book was given successfully</p>
      */
     boolean giveBook(CommandSender sender, String[] args, boolean givePublic, String folder) {
+        String command = givePublic ? "givepublicbook" : "givebook";
+        if (args.length == 0) {
+            BookFileHelper.printBooks(sender, givePublic, command, 1);
+            return true;
+        } else if (args.length == 1) {
+            int page = InputCleaningHelper.parsePageNumber(args[0]);
+            if (page > 0) {
+                BookFileHelper.printBooks(sender, givePublic, command, page);
+                return true;
+            }
+        }
+
         if (args.length == 1 || args.length > 4) {
             BooksWithoutBorders.sendErrorMessage(sender, "Incorrect number of arguments for this command!");
             return false;
         }
 
-        if (args.length == 0) {
-            BookFileHelper.printBooks(sender, givePublic);
-            return true;
-        }
-
         //Organize and parse input
         String bookIdentifier = args[0];
         String receivingPlayerName = args[1];

src/main/java/net/knarcraft/bookswithoutborders/command/CommandLoad.java

@@ -49,19 +49,26 @@ public class CommandLoad implements TabExecutor {
         int argumentCount = args.length;
 
         //Show books available to the player
+        String command = loadPublic ? "loadpublicbook" : "loadbook";
         if (argumentCount == 0) {
-            BookFileHelper.printBooks(sender, loadPublic);
+            BookFileHelper.printBooks(sender, loadPublic, command, 1);
             return true;
+        } else if (argumentCount == 1) {
+            int page = InputCleaningHelper.parsePageNumber(args[0]);
+            if (page > 0) {
+                BookFileHelper.printBooks(sender, loadPublic, command, page);
+                return true;
+            }
         }
 
         //Organize and parse input
         String bookIdentifier = args[0];
         String copies = "1";
         String isSigned = "true";
-        if (args.length == 3) {
+        if (argumentCount == 3) {
             copies = args[1];
             isSigned = args[2];
-        } else if (args.length == 2) {
+        } else if (argumentCount == 2) {
             if (args[1].equalsIgnoreCase("true") || args[1].equalsIgnoreCase("false")) {
                 isSigned = args[1];
             } else {

src/main/java/net/knarcraft/bookswithoutborders/utility/BookFileHelper.java

@@ -4,7 +4,13 @@ import net.knarcraft.bookswithoutborders.BooksWithoutBorders;
 import net.knarcraft.bookswithoutborders.config.BooksWithoutBordersConfig;
 import net.knarcraft.bookswithoutborders.state.BookDirectory;
 import net.md_5.bungee.api.ChatColor;
+import net.md_5.bungee.api.chat.ClickEvent;
+import net.md_5.bungee.api.chat.ComponentBuilder;
+import net.md_5.bungee.api.chat.HoverEvent;
+import net.md_5.bungee.api.chat.TextComponent;
+import net.md_5.bungee.api.chat.hover.content.Text;
 import org.bukkit.command.CommandSender;
+import org.jetbrains.annotations.NotNull;
 
 import java.io.File;
 import java.util.ArrayList;
@@ -19,6 +25,8 @@ import static net.knarcraft.bookswithoutborders.config.BooksWithoutBordersConfig
  */
 public final class BookFileHelper {
 
+    private final static int booksPerPage = 10;
+
     private BookFileHelper() {
     }
 
@@ -106,27 +114,68 @@ public final class BookFileHelper {
      *
      * @param sender     <p>The sender to display the books to</p>
      * @param listPublic <p>Whether to display public books</p>
+     * @param command    <p>The base command causing this to be called</p>
+     * @param page       <p>The page of the book list to display</p>
      */
-    public static void printBooks(CommandSender sender, boolean listPublic) {
+    public static void printBooks(@NotNull CommandSender sender, boolean listPublic, @NotNull String command, int page) {
         List<String> availableBooks = BooksWithoutBorders.getAvailableBooks(sender, listPublic);
-        BookFileHelper.printFiles(sender, availableBooks);
+        int totalPages = (int) Math.ceil((double) availableBooks.size() / booksPerPage);
+        if (page > totalPages) {
+            sender.sendMessage(ChatColor.GRAY + "No such page");
+        } else {
+            showBookMenu(sender, command, page, totalPages, availableBooks);
+        }
     }
 
     /**
-     * Prints a list of files
+     * Shows a menu listing available books
      *
-     * @param sender   <p>The command sender to show the list to</p>
-     * @param fileList <p>The files to list</p>
+     * @param sender         <p>The sender wanting to see the book menu</p>
+     * @param command        <p>The main command used to trigger display of the book menu</p>
+     * @param page           <p>The currently selected page</p>
+     * @param totalPages     <p>The total amount of pages</p>
+     * @param availableBooks <p>All books available to the sender</p>
      */
-    public static void printFiles(CommandSender sender, List<String> fileList) {
-        BooksWithoutBorders.sendSuccessMessage(sender, "Available Books:");
-        if (fileList == null) {
-            return;
+    private static void showBookMenu(@NotNull CommandSender sender, @NotNull String command, int page,
+                                     int totalPages, @NotNull List<String> availableBooks) {
+        // Print the previous page button
+        ComponentBuilder previousComponent = new ComponentBuilder();
+        if (page > 1) {
+            HoverEvent prevPagePreview = new HoverEvent(HoverEvent.Action.SHOW_TEXT, new Text("To page " + (page - 1)));
+            ClickEvent prevPageClick = new ClickEvent(ClickEvent.Action.RUN_COMMAND, command + " page" + (page - 1));
+            previousComponent.append("Previous [<]").event(prevPagePreview).event(prevPageClick);
+        } else {
+            previousComponent.append("Previous [<]").color(ChatColor.GRAY);
         }
-        int listSize = fileList.size();
-        for (int fileIndex = 0; fileIndex < listSize; fileIndex++) {
-            sender.sendMessage(ChatColor.GRAY + "[" + (fileIndex + 1) + "] " + fileList.get(fileIndex));
+        sender.spigot().sendMessage(previousComponent.create());
+
+        // Print the main list of all book indexes and titles
+        HoverEvent interactSuggestion = new HoverEvent(HoverEvent.Action.SHOW_TEXT, new Text("Click me"));
+        int startIndex = (page - 1) * booksPerPage;
+        for (int bookIndex = startIndex; bookIndex < Math.min(startIndex + booksPerPage, availableBooks.size()); bookIndex++) {
+            ComponentBuilder bookComponent = new ComponentBuilder();
+            TextComponent indexComponent = new TextComponent("[" + (bookIndex + 1) + "] ");
+            indexComponent.setColor(ChatColor.GOLD);
+            bookComponent.append(indexComponent).event(new ClickEvent(ClickEvent.Action.SUGGEST_COMMAND,
+                    "/" + command + " " + (bookIndex + 1))).event(interactSuggestion);
+
+            TextComponent bookNameComponent = new TextComponent(availableBooks.get(bookIndex));
+            bookNameComponent.setColor(ChatColor.WHITE);
+            bookComponent.append(bookNameComponent).event(new ClickEvent(ClickEvent.Action.SUGGEST_COMMAND,
+                    "/" + command + " " + availableBooks.get(bookIndex))).event(interactSuggestion);
+            sender.spigot().sendMessage(bookComponent.create());
         }
+
+        // Print the next page button
+        ComponentBuilder nextComponent = new ComponentBuilder();
+        if (page < totalPages) {
+            HoverEvent nextPagePreview = new HoverEvent(HoverEvent.Action.SHOW_TEXT, new Text("To page " + (page + 1)));
+            ClickEvent nextPageClick = new ClickEvent(ClickEvent.Action.RUN_COMMAND, command + " page" + (page + 1));
+            nextComponent.append("Next [>]").event(nextPagePreview).event(nextPageClick);
+        } else {
+            nextComponent.append("Next [>]").color(ChatColor.GRAY).reset();
+        }
+        sender.spigot().sendMessage(nextComponent.create());
     }
 
     /**

src/main/java/net/knarcraft/bookswithoutborders/utility/InputCleaningHelper.java

@@ -1,7 +1,11 @@
 package net.knarcraft.bookswithoutborders.utility;
 
+import org.jetbrains.annotations.NotNull;
+
 import java.util.ArrayList;
 import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 /**
  * Helper class for cleaning input and names
@@ -58,4 +62,24 @@ public final class InputCleaningHelper {
         return fileName;
     }
 
+    /**
+     * Parses a page number for a string like "page1"
+     *
+     * @param input <p>The input to parse</p>
+     * @return <p>The page number, or 0 if not valid</p>
+     */
+    public static int parsePageNumber(@NotNull String input) {
+        try {
+            Pattern pattern = Pattern.compile("page([0-9])+");
+            Matcher matcher = pattern.matcher(input);
+            if (matcher.matches()) {
+                return Integer.parseInt(matcher.group(1));
+            } else {
+                return 0;
+            }
+        } catch (NumberFormatException exception) {
+            return 0;
+        }
+    }
+
 }