CommandExtension.java

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package com.runehive.game.plugin.extension;
 
import com.google.common.collect.ArrayListMultimap;
import com.google.common.collect.Multimap;
import com.runehive.game.plugin.PluginContext;
import com.runehive.game.world.entity.mob.data.PacketType;
import com.runehive.game.world.entity.mob.player.command.CommandParser;
import com.runehive.game.world.entity.mob.player.Player;
import com.runehive.game.world.entity.mob.player.command.Command;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
 
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;
 
public abstract class CommandExtension extends PluginContext {
 
    public static final Logger logger = LogManager.getLogger(CommandExtension.class);
    protected static final Set<CommandExtension> extensions = new HashSet<>();
 
    protected final Set<Command> commands = new HashSet<>();
    public final Multimap<String, Command> multimap = ArrayListMultimap.create();
 
    @Override
    public void onInit() {
        extensions.add(this);
        register();
        multimap.clear();
        for (Command command : commands) {
            if (command.getNames().length == 0) {
                logger.warn(String.format("plugin=%s command missing name.", this.getClass().getSimpleName()));
                continue;
            }
 
            for (String name : command.getNames()) {
                final String key = name.toLowerCase();
                if (multimap.containsKey(key)) {
                    logger.warn(String.format("plugin=%s duplicate command=%s", this.getClass().getSimpleName(), key));
                    continue;
                }
 
                multimap.put(key, command);
            }
        }
        commands.clear();
    }
 
    protected abstract void register();
 
    public abstract boolean canAccess(Player player);
 
    private static boolean canExecute(Player player, CommandParser parser) {
        return !player.locking.locked(PacketType.COMMANDS) || parser.getCommand().startsWith("key");
    }
 
    @Override
    protected boolean handleCommand(Player player, CommandParser parser) {
        if (!canExecute(player, parser)) {
            return true;
        }
 
        for (CommandExtension extension : extensions) {
 
            if (!extension.canAccess(player)) {
                continue;
            }
 
            final Collection<Command> collection = extension.multimap.get(parser.getCommand().toLowerCase());
 
            if (collection == null) {
                continue;
            }
 
            if (collection.isEmpty()) {
                continue;
            }
 
            final Command command = collection.toArray(new Command[0])[0];
 
            // execute error
            try {
                command.execute(player, parser);
            } catch (Exception ex) {
                // but dont care about the exception
            }
 
            return true;
 
        }
        return false;
    }
 
}