Added a test command and made some fixes

Signed-off-by: Quentin Legot <legotquentin@gmail.com>

Pagination/src/main/java/fr/altarik/toolbox/pagination/PaginatedContent.java

@@ -32,18 +32,20 @@ public class PaginatedContent {
         List<String> currentPage = new ArrayList<>();
         for(String elem : secondSplit) {
             line++;
-            currentPage.add(elem);
+            if(!elem.isEmpty())
+                currentPage.add(elem);
             if(line == 8 || elem.isEmpty()) {
                 pages.add(new Page(currentPage));
                 line = 0;
                 currentPage = new ArrayList<>();
             }
         }
+        pages.add(new Page(currentPage));
     }
 
     public void display(ServerPlayerEntity playerEntity, int page) {
        if(page >= this.pages.size()) {
-           throw new IllegalArgumentException("There's " + this.pages.size() + " paginated pages but you wanted page n°" + page);
+           throw new IllegalArgumentException("There's " + this.pages.size() + " paginated pages but you wanted page n°" + (page + 1));
        } else if(page < 0) {
            throw new IllegalArgumentException("argument page is lower than 0");
        } else {

Pagination/src/main/java/fr/altarik/toolbox/pagination/command/CommandsRegister.java

@@ -26,10 +26,36 @@ public class CommandsRegister {
                         .then(argument("page", IntegerArgumentType.integer())
                                 .executes(this::selectPageCommand)
                         )
+                ).then(literal("test")
+                        .requires(source -> source.isExecutedByPlayer() && source.hasPermissionLevel(3))
+                        .executes(this::testPageCommand)
                 )
         );
     }
 
+    /**
+     * Simply a debug command
+     */
+    private int testPageCommand(CommandContext<ServerCommandSource> context) {
+        api.createTable(context.getSource().getPlayer(), """
+                first line
+                Second line
+                
+                second page
+                dqdq
+                dqdqd
+                qdqdq
+                dqdq
+                dqdq
+                dqdq
+                dqdqd
+                third page
+                dqdqd
+                dqdqd
+                d""", "My header");
+        return 0;
+    }
+
     private int selectPageCommand(CommandContext<ServerCommandSource> context) throws CommandSyntaxException {
         try {
             int page = IntegerArgumentType.getInteger(context, "page");