Change ExecutableCommand interface (wip – doesn't compile)

- Change interface to use (CommandSender, List<String> arguments)
- Use CommandArgumentDescription#name instead of "label" (to prevent confusion between command labels and arguments)
- Simplify command difference computation in CommandHandler (no longer consider argument difference)

src/main/java/fr/xephi/authme/command/help/HelpPrinter.java

@@ -69,7 +69,7 @@ public class HelpPrinter {
         for (CommandArgumentDescription arg : command.getArguments()) {
             // Create a string builder to build the syntax in
             StringBuilder argString = new StringBuilder();
-            argString.append(" " + ChatColor.YELLOW + ChatColor.ITALIC + arg.getLabel() + " : " + ChatColor.WHITE + arg.getDescription());
+            argString.append(" " + ChatColor.YELLOW + ChatColor.ITALIC + arg.getName() + " : " + ChatColor.WHITE + arg.getDescription());
 
             // Suffix a note if the command is optional
             if (arg.isOptional())

src/main/java/fr/xephi/authme/command/help/HelpProvider.java

@@ -29,6 +29,13 @@ public class HelpProvider {
         showHelp(sender, reference, helpQuery, true, true, true, true, true, true);
     }
 
+    public static void showHelp(CommandSender sender, CommandParts reference, CommandParts helpQuery,
+                                boolean showCommand, boolean showDescription, boolean showArguments,
+                                boolean showPermissions, boolean showAlternatives, boolean showCommands) {
+        showHelp(sender, reference.getList(), helpQuery.getList(), showCommand, showDescription, showArguments,
+            showPermissions, showAlternatives, showCommands);
+    }
+
     /**
      * Show help for a specific command.
      *
@@ -42,7 +49,9 @@ public class HelpProvider {
      * @param showAlternatives True to show the command alternatives.
      * @param showCommands     True to show the child commands.
      */
-    public static void showHelp(CommandSender sender, CommandParts reference, CommandParts helpQuery, boolean showCommand, boolean showDescription, boolean showArguments, boolean showPermissions, boolean showAlternatives, boolean showCommands) {
+    public static void showHelp(CommandSender sender, List<String> reference, List<String> helpQuery,
+                                boolean showCommand, boolean showDescription, boolean showArguments,
+                                boolean showPermissions, boolean showAlternatives, boolean showCommands) {
         // Find the command for this help query, one with and one without a prefixed base command
         FoundCommandResult result = AuthMe.getInstance().getCommandHandler().findCommand(new CommandParts(helpQuery.getList()));
 
@@ -77,7 +86,7 @@ public class HelpProvider {
         }
 
         // Get the proper command reference to use for the help page
-        CommandParts commandReference = command.getCommandReference(result.getQueryReference());
+        CommandParts commandReference = command.getCommandReference(result.getLabels());
 
         // Get the base command
         String baseCommand = commandReference.get(0);

src/main/java/fr/xephi/authme/command/help/HelpSyntaxHelper.java

@@ -73,8 +73,8 @@ public final class HelpSyntaxHelper {
 
     private static String formatArgument(CommandArgumentDescription argument) {
         if (argument.isOptional()) {
-            return " [" + argument.getLabel() + "]";
+            return " [" + argument.getName() + "]";
         }
-        return " <" + argument.getLabel() + ">";
+        return " <" + argument.getName() + ">";
     }
 }