/**
 *
 */
package cn.citycraft.CTZServer.commands;

import java.util.ArrayList;
import java.util.List;

import org.bukkit.command.CommandException;
import org.bukkit.plugin.Plugin;

/**
 * 子命令处理类
 *
 * @author 蒋天蓓 2015年8月22日上午8:29:44
 */
public class HandlerSubCommand {
	/**
	 * 命令监听类列表
	 */
	private final List<BaseCommand> commandlist = new ArrayList<BaseCommand>();

	/**
	 * 默认命令处理
	 */
	DefaultCommand defaultcommand;

	/**
	 * 插件主类
	 */
	Plugin main;

	/**
	 * 已注册命令列表(包括别名)
	 */
	List<String> RegisterCommandList = new ArrayList<String>();

	/**
	 * 注册子命令
	 *
	 * @param yum
	 *            - 插件主类
	 */
	public HandlerSubCommand(final Plugin plugin) {
		this.main = plugin;
	}

	/**
	 * 转移数组
	 *
	 * @param args
	 *            - 原数组
	 * @param start
	 *            - 数组开始位置
	 * @return 转移后的数组字符串
	 */
	public static String[] moveStrings(final String[] args, final int start) {
		final String[] ret = new String[args.length - start];
		System.arraycopy(args, start, ret, 0, ret.length);
		return ret;
	}

	/**
	 * 获得已注册的命令列表
	 *
	 * @return - 返回已注册的命令List
	 */
	public List<String> getRegisterCommands() {
		final List<String> cmds = new ArrayList<String>();
		for (final BaseCommand command : commandlist) {
			cmds.addAll(command.getCommandList());
		}
		return cmds;
	}

	public boolean onCommand(final String label, final String[] args) {
		final String prefix = "§6[§b" + main.getName() + "§6] ";
		final String subcmd = args[0];
		if (subcmd.equalsIgnoreCase("help")) {
			printl("§6=========" + prefix + "插件帮助列表=========");
			for (final BaseCommand command : commandlist) {
				printl(String.format("§6/" + label + " §a%1$s %2$s §6- §b%3$s", command.getName(), command.getPossibleArguments(), command.getDescription()));
			}
			return true;
		}
		final String[] subargs = moveStrings(args, 1);
		for (final BaseCommand command : commandlist) {
			if (command.isValidTrigger(subcmd)) {
				if (subargs.length >= command.getMinimumArguments()) {
					try {
						command.execute(subcmd, subargs);
						return true;
					} catch (final CommandException e) {
						printl(e.getMessage());
					}
				} else {
					printl(prefix + "§c错误的参数 §e使用方法 /" + label + " " + command.getName() + " " + command.getPossibleArguments());
				}
			}
		}
		return false;
	}

	public void printl(final String msg) {
		System.out.println(msg);
	}

	/**
	 * 注册命令
	 *
	 * @param command
	 *            - 被注册的命令类
	 */
	public void registerCommand(final BaseCommand command) {
		commandlist.add(command);
		RegisterCommandList = getRegisterCommands();
	}

	/**
	 * 处理默认命令
	 *
	 * @param defaultcommand
	 *            - 默认命令处理类
	 */
	public void setDefaultCommand(final DefaultCommand defaultcommand) {
		this.defaultcommand = defaultcommand;
	}

}