Added support for sub-command aliases

Author: Despical

.github/README.md

@@ -37,7 +37,7 @@ To add this project as a dependency to your project, add the following to your p
 <dependency>
     <groupId>com.github.Despical</groupId>
     <artifactId>CommandFramework</artifactId>
-    <version>1.3.1</version>
+    <version>1.3.2</version>
     <scope>compile</scope>
 </dependency>
 ```
@@ -50,7 +50,7 @@ repositories {
 ```
 ```
 dependencies {
-    compileOnly group: "com.github.Despical", name: "CommandFramework", version: "1.3.1";
+    compileOnly group: "com.github.Despical", name: "CommandFramework", version: "1.3.2";
 }
 ```
 

pom.xml

@@ -3,7 +3,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>me.despical</groupId>
     <artifactId>command-framework</artifactId>
-    <version>1.3.1</version>
+    <version>1.3.2</version>
 
     <name>Command Framework</name>
     <inceptionYear>2020</inceptionYear>

src/main/java/me/despical/commandframework/CommandFramework.java

@@ -115,8 +115,8 @@ public CommandFramework(@NotNull Plugin plugin) {
 				field.setAccessible(true);
 
 				commandMap = (CommandMap) field.get(manager);
-			} catch (IllegalArgumentException | SecurityException | IllegalAccessException | NoSuchFieldException e) {
-				e.printStackTrace();
+			} catch (ReflectiveOperationException exception) {
+				exception.printStackTrace();
 			}
 		}
 	}
@@ -159,6 +159,10 @@ public void registerCommands(@NotNull Object instance) {
 				}
 
 				registerCommand(command, method, instance);
+
+				// If aliases are registered as a sub-command then register them as a plugin command.
+				// Otherwise, they will not be recognized as a command and will not be proceeded.
+				Stream.of(command.aliases()).filter(alias -> alias.contains(".")).forEach(alias -> registerCommand(Utils.createCommand(command, alias), method, instance));
 			} else if (method.isAnnotationPresent(Completer.class)) {
 				if (!List.class.isAssignableFrom(method.getReturnType())) {
 					plugin.getLogger().log(Level.WARNING, "Skipped registration of ''{0}'' because it is not returning java.util.List type.", method.getName());
@@ -177,18 +181,11 @@ public void registerCommands(@NotNull Object instance) {
 
 		subCommands.forEach((key, value) -> {
 			final String splitName = key.name().split("\\.")[0];
-			boolean shouldThrowException = false;
 
-			// This is an unsupported behaviour at least for now.
-			// All sub-commands must have their own main command to be registered.
+			// Framework is going to work properly but this should not be handled that way.
 			if (commands.keySet().stream().noneMatch(cmd -> cmd.name().equals(splitName))) {
-				shouldThrowException = true;
-
-				unregisterCommand(key.name());
+				registerCommand(Utils.createCommand(key, splitName), null, null);
 			}
-
-			if (shouldThrowException)
-				throw new CommandException("You can not create sub-commands without a main command! (%s)", key.name());
 		});
 	}
 
@@ -217,7 +214,7 @@ private void registerCommand(Command command, Method method, Object instance) {
 				pluginCommand.setUsage(command.usage());
 				pluginCommand.setPermission(!command.permission().isEmpty() ? null : command.permission());
 				pluginCommand.setDescription(command.desc());
-				pluginCommand.setAliases(Stream.of(command.aliases()).map(String::toLowerCase).collect(Collectors.toList()));
+				pluginCommand.setAliases(Stream.of(command.aliases()).filter(alias -> !alias.contains(".")).collect(Collectors.toList()));
 
 				commandMap.register(cmdName, pluginCommand);
 			} catch (Exception exception) {
@@ -406,6 +403,9 @@ public boolean onCommand(@NotNull CommandSender sender, @NotNull org.bukkit.comm
 					final Method method = entry.getValue().getKey();
 					final Object instance = entry.getValue().getValue();
 
+					if (method == null)
+						return;
+
 					if (method.isAnnotationPresent(NoCommandArguments.class)) {
 						method.invoke(instance);
 						return;

src/main/java/me/despical/commandframework/utils/Utils.java

@@ -18,6 +18,10 @@
 
 package me.despical.commandframework.utils;
 
+import me.despical.commandframework.Command;
+import org.jetbrains.annotations.ApiStatus;
+
+import java.lang.annotation.Annotation;
 import java.util.AbstractMap;
 import java.util.Arrays;
 import java.util.Map;
@@ -30,6 +34,7 @@
  *
  * This class is a part of Despical's Commons library.
  */
+@ApiStatus.Internal
 public class Utils {
 
 	private Utils() {
@@ -189,4 +194,74 @@ public static <K, V> Map<K, V> mapOf(K a, V b) {
 	public static <K, V> Map<K, V> mapOf(Map.Entry<K, V>... a) {
 		return Arrays.stream(a).collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue, (b, c) -> c));
 	}
+
+	public static Command createCommand(final Command command, final String commandName) {
+		return new Command() {
+
+			@Override
+			public String name() {
+				return commandName;
+			}
+
+			@Override
+			public String permission() {
+				return command.permission();
+			}
+
+			@Override
+			public String[] aliases() {
+				return new String[0];
+			}
+
+			@Override
+			public String desc() {
+				return command.desc();
+			}
+
+			@Override
+			public String usage() {
+				return command.usage();
+			}
+
+			@Override
+			public int min() {
+				return command.min();
+			}
+
+			@Override
+			public int max() {
+				return command.max();
+			}
+
+			@Override
+			public int cooldown() {
+				return command.cooldown();
+			}
+
+			@Override
+			public boolean allowInfiniteArgs() {
+				return command.allowInfiniteArgs();
+			}
+
+			@Override
+			public boolean onlyOp() {
+				return command.onlyOp();
+			}
+
+			@Override
+			public boolean async() {
+				return command.async();
+			}
+
+			@Override
+			public SenderType senderType() {
+				return command.senderType();
+			}
+
+			@Override
+			public Class<? extends Annotation> annotationType() {
+				return command.annotationType();
+			}
+		};
+	}
 }