package day06;
import java.util.*;
public class Demo1 {
public static void main(String[] args) {
String[] dishNames = {"红烧带鱼","鱼香肉丝","时令蔬菜"};//菜品名称
double[] prices = new double[] {38.0,20.0,10.0};//菜品价格
int[] praiseNums = new int[3];//点赞数
//存储订单信息
String[] names = new String[4];//保存订单人姓名
String[] dishMegs = new String[4];//保存菜品和份数
int[] times = new int[4];//保存送餐时间
String[] addresses = new String[4];//保存送餐地址
int[] states = new int[4];//保存订单状态；0表示已经预定，1表示已经完成
double[] sumPrieces = new double[4];//保存订单的总金额
Scanner input = new Scanner(System.in);
int num = -1;//用户输入9时返回主菜单，否则退出系统
boolean isExit = false;//标志用户是否退出系统；true为退出系统
System.out.println("\n 欢迎使用“吃货联盟订餐系统”");
//循环，现实菜单，根据用户选择的数字执行相应功能
do {
//现实菜单
System.out.println("***************************");
System.out.println("1.我要订餐");
System.out.println("2.查看菜单");
System.out.println("3.签收订单");
System.out.println("4.删除订单");
System.out.println("5.我要点赞");
System.out.println("6.退出系统");
System.out.println("***************************");
System.out.println("请选择：");
int choose = input.nextInt();//记录用户选择的功能
//根据用户输入的功能，执行相应的命令
switch (choose){
case 1:
//我要订餐
System.out.println("***我要订餐***");
Boolean isAdd = false;
for(int j =0;j<names.length;j++){
if(names[j]==null){
isAdd =true;
System.out.print("请输入订单人姓名：");
String name =input.next();
//显示可以提供选择的菜单
System.out.println("序号"+"\t"+"菜名"+"\t"+"单价"+"\t"+"点赞数");
for(int i =0;i<dishNames.length;i++){
String price = prices[i] +"元";
String priaiseNum = (praiseNums[i] > 0? praiseNums[i]+"赞":"0");
System.out.println((i+1)+"\t" +dishNames[i]+"\t" +price+ "\t" +priaiseNum);
}
//用户点菜
System.out.print("请选择您要点的菜单编号:");
int chooseDish = input.nextInt();
System.out.print("请选择您需要的份数：");
int number =input.nextInt();
String dishMeg =dishNames[chooseDish -1]+""+number+"份";
double sumPrice =prices[chooseDish -1]*number;
//餐费满50元，免送餐费5元
double deliCharge = (sumPrice>=50)?0:5;
System.out.print("请输入送餐时间（送餐时间是10点到20点整点送餐）：");
int time =input.nextInt();
while(time<10|| time>20){
System.out.print("您输入有误，请输入10-20点！");
time =input.nextInt();
}
System.out.print("请输入送餐地址：");
String address =input.next();
//无需添加状态，默认是0，则为已经预订
System.out.println("订餐成功!");
System.out.println("您的订餐时间是："+dishMeg);
System.out.println("送餐时间："+time+"点");
System.out.println("餐费："+sumPrice+"元,送餐费"+deliCharge+"元,总计："+(sumPrice+deliCharge)+"元。");
//添加数据
names[j] = name;
dishMegs[j] = dishMeg;
times[j] = time;
addresses[j] = address;
sumPrieces[j] = sumPrice;
break;
}
}
if(!isAdd){
System.out.println("对不起，您的餐袋已经满了！");
}
break;
case 2:
//查看菜单
System.out.println("***查看菜单***");
System.out.println("序号\t 订单人\t 餐品信息\t\t 送餐时间\t 送餐地址\t\t 总金额\t 订单状态");
for(int i=0;i<names.length;i++){
if(names[i]!=null){
String state = (states[i]==0?"已经预定":"已经完成");
String date = times[i]+"点";
String sumPrice = sumPrieces[i]+"元";
System.out.println((i+1)+"\t"+names[i]+"\t" + dishMegs[i]+"\t" +date+"\t" +addresses[i]+"" +
"\t" +sumPrice+"\t" +state);
}
}
break;
case 3:
//签收订单
System.out.println("***签收订单***");
boolean isSignFind = false;//找到要签收的订单
System.out.print("请选择要签收的订单序号：");
int signOrderId = input.nextInt();
for(int i = 0;i<names.length;i++){
//订单状态为预订，序号为用户输入的订单号减1，可签收
//订单状态为完成，序号为用户输入的订单号减1，不可签收
if(names[i]!=null&& states[i]==0&&signOrderId==i+1){
states[i] =1;
System.out.println("订单已经签收成功！");
isSignFind = true;
}else if(names[i]!=null && states[i]==1 && signOrderId==i+1){
System.out.println("你选择的订单已经完成签收，不能再次签收！");
isSignFind = true;
}
}
//未找到的订单序号，不能签收
if(!isSignFind){
System.out.println("您选择的订单不存在！");
}
break;
case 4:
//删除订单
System.out.println("***删除订单***");
boolean isDelFind = false;
System.out.print("请输入要删除的订单序号：");
int delId = input.nextInt();
for(int i =0;i<names.length;i++){
//状态值为已完成，序号值为用户输入的序号减1，可删除
//状态值为已经预定，序号值为用户输入的序号减1，不可删除
if(names[i]!=null&&states[i]==1&&delId==i+1){
isDelFind=true;
//执行删除操作，删除位置后的元素一次前移
for(int j=delId-1;j<names.length-1;j++){
names[j] = names[j+1];
dishMegs[j] = dishMegs[j+1];
times[j] = times[j+1];
addresses[j] = addresses[j+1];
states[j] = states[j+1];
sumPrieces[j] = sumPrieces[j+1];
}
//最后一位清空
int endIndex = names.length-1;
names[endIndex] = null;
dishMegs[endIndex] = null;
times[endIndex] = 0;
addresses[endIndex] = null;
states[endIndex] = 0;
sumPrieces[endIndex] = 0;
System.out.println("删除订单成功！");
break;
}
}
//未找到订单序号，不能删除！
if(!isDelFind){
System.out.println("您要删除的订单不存在！");
}
break;
case 5:
//我要点赞
System.out.println("***我要点赞***");
//显示菜单名
System.out.println("序号"+"\t"+"菜名"+"\t"+"单价");
for(int i =0;i<dishNames.length;i++){
String price = prices[i] + "元";
String priaiseNum = (praiseNums[i])>0?praiseNums[i] +"赞":"";
System.out.println((i+1)+"\t" + dishNames[i]+"\t" +price+"\t" +priaiseNum);
}
System.out.print("请选择您要点赞的菜品序号：");
int priaiseNum = input.nextInt();
praiseNums[priaiseNum-1]++;//点赞数加1
System.out.println("点赞成功！");
break;
case 6:
//退出系统
isExit =true;
System.out.println("欢迎下次再使用！！！祝你贪吃不胖！！！");
break;
default:
isExit=true;
break;
}
if(!isExit){
System.out.print("输入0返回：");
num =input.nextInt();
}else {
break;
}
}while (num == 0);
}
}
