package com.dy.pipirrComCreator.console;

import lombok.extern.slf4j.Slf4j;

import java.io.Console;
import java.io.PrintWriter;
@Slf4j
public class CommandConsole {
	
	private Console console ;
	private PrintWriter prtWrt ;
	private static final String myPassword = "123456" ;
	private static final String commandPrefix1 = ">>" ;
	private static final String commandPrefix2 = "$: " ;
	private static String commandPrefix = commandPrefix1 + commandPrefix2 ;

	
	public CommandConsole(Console console)throws Exception{
		this.console = console ;	
		if(this.console == null){
			throw new Exception("严重错误，java控制台对象为空！");
		}
		prtWrt = console.writer() ;
	}

	/**
	 * 初始，检查并输出一些信息
	 * @throws Exception
	 */
	public void init() throws Exception{
		PrintWriter prtWrt = console.writer() ;
		prtWrt.println("----------------------------------------");
		prtWrt.println("--                                    --");
		prtWrt.println("--    欢迎使用命令生成器              --");
		prtWrt.println("--                                    --");
		prtWrt.println("----------------------------------------");
	}
	
	/**
	 * 执行控制台控制
	 * @return
	 */
	public boolean clientConsole(){
		boolean exit = false ;
		try {
			this.login() ;
			exit = this.doConsole();
		} catch (Exception e) {
			e.printStackTrace();
		}
		return exit ;
	}
	
	private boolean login(){
		while (true) {
			//String username = console.readLine(">>Username: ");
			char[] password = console.readPassword(">>Password: ");
			String passwordStr = String.valueOf(password) ;
			if (passwordStr.equals("help")) {
				console.printf("密码是%1$s.\n", myPassword);
				// 使用后应立即将数组清空，以减少其在内存中占用的时间，增强安全性
				password = null;
			} else if(passwordStr.equals(myPassword)){
				return true;
			}
		}
	}
	
	private boolean doConsole(){
		boolean exit = false ;
		while (!exit) {
			String command = console.readLine(commandPrefix);
			try {
				exit = Command.dealCommand(command, prtWrt) ;
			}catch (Exception e){
				e.printStackTrace();
			}

		}
		return exit ;
	}
	
	public static void changeCommandPrefix(String prefix){
		commandPrefix = commandPrefix1 + prefix ;
	}
	public static void recoverCommandPrefix(){
		commandPrefix = commandPrefix1 + commandPrefix2 ;
	}
}