Started working on command system

Added a bunch of TODOs
ThorpeCore

ButtonCore/src/main/java/buttondevteam/core/ComponentCommand.java

@@ -48,10 +48,10 @@ public class ComponentCommand extends TBMCCommandBase {
 
 	private Optional<Component> getComponentOrError(String arg, CommandSender sender) {
 		val oc = Component.getComponents().values().stream().filter(c -> c.getClass().getSimpleName().equalsIgnoreCase(arg)).findAny();
-		if (!oc.isPresent())
-			sender.sendMessage("§cComponent not found!");
-		return oc;
-	}
+		if (!oc.isPresent()) //TODO: There may be multiple components with the same name
+			sender.sendMessage("§cComponent not found!"); //^ Much simpler to solve in the new command system
+		return oc; //TODO: Offer overload options with clickable link (with all the plugins it found)
+	} //TODO: Tabcompletion for the new command system
 
 	@Override
 	public String[] GetHelpText(String alias) {

ButtonCore/src/main/java/buttondevteam/lib/architecture/IHaveConfig.java

@@ -7,7 +7,7 @@ import java.util.HashMap;
 import java.util.function.Function;
 
 /**
- * Members of this interface should be protected (access level)
+ * A config system
  */
 public final class IHaveConfig {
 	private final HashMap<String, ConfigData<?>> datamap = new HashMap<>();
@@ -15,7 +15,7 @@ public final class IHaveConfig {
 	private ConfigurationSection config;
 
 	/**
-	 * May be used in testing
+	 * May be used in testing.
 	 *
 	 * @param section May be null for testing
 	 */

ButtonCore/src/main/java/buttondevteam/lib/chat/Command2.java

@@ -1,12 +1,22 @@
 package buttondevteam.lib.chat;
 
+import lombok.RequiredArgsConstructor;
+import lombok.val;
 import org.bukkit.command.CommandSender;
 
 import java.lang.annotation.ElementType;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.function.Function;
 
+/**
+ * The method name is the subcommand, use underlines (_) to add further subcommands.
+ * The args may be null if the conversion failed.
+ */
 public abstract class Command2 {
 	/**
 	 * Default handler for commands, can be used to copy the args too.
@@ -14,7 +24,7 @@ public abstract class Command2 {
 	 * @param sender  The sender which ran the command
 	 * @param command The (sub)command ran by the user
 	 * @param args    All of the arguments passed as is
-	 * @return
+	 * @return The success of the command
 	 */
 	public boolean def(CommandSender sender, String command, @TextArg String args) {
 		return false;
@@ -28,4 +38,92 @@ public abstract class Command2 {
 	@Retention(RetentionPolicy.RUNTIME)
 	public @interface TextArg {
 	}
+
+	/**
+	 * Methods annotated with this will be recognised as subcommands
+	 */
+	@Target(ElementType.METHOD)
+	@Retention(RetentionPolicy.RUNTIME)
+	public @interface Subcommand {
 	}
+
+	@RequiredArgsConstructor
+	private static class SubcommandData {
+		public final Method method;
+		public final Command2 command;
+	}
+
+	private static HashMap<String, SubcommandData> subcommands = new HashMap<>();
+	private static HashMap<Class<?>, Function<String, ?>> paramConverters = new HashMap<>();
+
+	public Command2() {
+		for (val method : getClass().getMethods())
+			if (method.isAnnotationPresent(Subcommand.class))
+				subcommands.put(method.getName().replace('_', ' '), new SubcommandData(method, this));
+		path = getcmdpath();
+	}
+
+	/**
+	 * Adds a param converter that obtains a specific object from a string parameter.
+	 * The converter may return null.
+	 *
+	 * @param cl        The class of the result object
+	 * @param converter The converter to use
+	 * @param <T>       The type of the result
+	 */
+	public static <T> void addParamConverter(Class<T> cl, Function<String, T> converter) {
+		paramConverters.put(cl, converter);
+	}
+
+	public static boolean handleCommand(CommandSender sender, String commandline) throws Exception {
+		for (int i = commandline.lastIndexOf(' '); i != -1; i = commandline.lastIndexOf(' ', i - 1)) {
+			String subcommand = commandline.substring(0, i);
+			SubcommandData sd = subcommands.get(subcommand); //O(1)
+			if (sd == null) continue; //TODO: This will run each time someone runs any command
+			val params = new ArrayList<Object>(sd.method.getParameterCount());
+			int j = 0, pj;
+			for (val cl : sd.method.getParameterTypes()) {
+				pj = j + 1;
+				j = commandline.indexOf(' ', j + 1);
+				String param = subcommand.substring(pj, j);
+				if (cl == String.class) {
+					params.add(param);
+					continue;
+				}
+				val conv = paramConverters.get(cl);
+				if (conv == null)
+					throw new Exception("No suitable converter found for parameter type '" + cl.getCanonicalName() + "' for command '" + sd.method.toString() + "'");
+				params.add(conv.apply(param));
+			}
+			sd.method.invoke(sd.command, params);
+			return true; //We found a method
+		}
+		return false; //Didn't handle
+	} //TODO: Use preprocess event and add to the help
+
+	private final String path;
+
+	/**
+	 * The command's path, or name if top-level command.<br>
+	 * For example:<br>
+	 * "u admin updateplugin" or "u" for the top level one<br>
+	 * <u>The path must be lowercase!</u><br>
+	 * <b>Abstract classes with no {@link CommandClass} annotations will be ignored.</b>
+	 *
+	 * @return The command path, <i>which is the command class name by default</i> (removing any "command" from it) - Change via the {@link CommandClass} annotation
+	 */
+	public final String GetCommandPath() {
+		return path;
+	}
+
+	private String getcmdpath() {
+		if (!getClass().isAnnotationPresent(CommandClass.class))
+			throw new RuntimeException(
+				"No @CommandClass annotation on command class " + getClass().getSimpleName() + "!");
+		Function<Class<?>, String> getFromClass = cl -> cl.getSimpleName().toLowerCase().replace("commandbase", "") // <-- ...
+			.replace("command", "");
+		String path = getClass().getAnnotation(CommandClass.class).path();
+		path = path.length() == 0 ? getFromClass.apply(getClass()) : path;
+		return path;
+	}
+} //TODO: Support Player instead of CommandSender

ButtonCore/src/main/resources/plugin.yml

@@ -1,4 +1,4 @@
-name: ButtonCore
+name: ThorpeCore
 main: buttondevteam.core.MainPlugin
 version: 1.0
 author: TBMCPlugins