package person;

public class Customer {
 public String name;
 public double money;
 public boolean isDrivingCar;
}

package supermarket;

public class LittleSuperMarket {
 public String superMarketName;
 public String address;
 public int parkingCount;
 public double incomingSum;
 public Merchandise[] merchandises;
 public int[] merchandisesold;
}

package supermarket;

public class Merchandise {
 public String name;
 public String id;
 public int count;
 public double soldPrice;
 public double purchasePrice;
}

import person.Customer;
import supermarket.LittleSuperMarket;
import supermarket.Merchandise;

import java.util.Scanner;

public class Run {
 public static void main(String[] args) {

  //通過小超市類創(chuàng)建超市實體
  LittleSuperMarket littleSuperMarket = new LittleSuperMarket();

  //為超市屬性賦值
  littleSuperMarket.address = "世紀大道999號";
  littleSuperMarket.superMarketName = "我家超市";
  littleSuperMarket.parkingCount = 200;

  //為超市商品屬性new一個大小為200的數(shù)組，類型為Merchandise
  littleSuperMarket.merchandises = new Merchandise[200];
  //創(chuàng)造下標(biāo)相同的數(shù)組記錄相同下標(biāo)商品的賣出個數(shù)
  littleSuperMarket.merchandisesold = new int[littleSuperMarket.merchandises.length];


  //賦值
  for (int i = 0; i < littleSuperMarket.merchandises.length; i++) {
   //創(chuàng)建類型為merchandise的局部變量m，并為其賦值
   Merchandise m = new Merchandise();
   m.count = 200;
   m.id = "ID" + i;
   m.name = "商品" + i;
   m.purchasePrice = 200 * Math.random();
   m.soldPrice = (1 + Math.random()) * m.purchasePrice;

   //將每次局部變量的值賦給對應(yīng)下標(biāo)的merchandise實體，此時實體merchandise有了值
   littleSuperMarket.merchandises[i] = m;

  }
  System.out.println("超市開張了！! ！");


  boolean open = true;
  Scanner scanner = new Scanner(System.in);


  while (open) {
   System.out.println("本店叫做：" + littleSuperMarket.superMarketName);
   System.out.println("本店地址：" + littleSuperMarket.address);
   System.out.println("共擁有停車位：" + littleSuperMarket.parkingCount);
   System.out.println("今天的營業(yè)額為：" + littleSuperMarket.incomingSum);
   System.out.println("共有商品：" + littleSuperMarket.merchandises.length + "種");


   //為顧客的屬性賦值
   Customer customer = new Customer();
   customer.name = "編號：" + ((int) (Math.random() * 500));
   customer.isDrivingCar = Math.random() > 0.4;
   customer.money = (1 + Math.random()) * 10000;


   //先判斷顧客是否開車
   if (customer.isDrivingCar) {
    System.out.println("歡迎顧客" + customer.name + "號的顧客駕車而來！");
    //顧客開車的條件下車位數(shù)>0，車位減一，否則重新進入循環(huán)（車位小于零，顧客無法停車）
    if (littleSuperMarket.parkingCount > 0) {
     littleSuperMarket.parkingCount--;
     System.out.println("歡迎顧客" + customer.name + "號的顧客光臨" + littleSuperMarket.superMarketName + ",車位剩余" + littleSuperMarket.parkingCount + "，錢包剩余" + customer.money);
    } else {
     System.out.println("對不起，停車位已滿，歡迎下次光臨");
     continue;
    }
    //沒開車，直接進入
   } else {
    System.out.println("歡迎顧客" + customer.name + "號的顧客光臨" + littleSuperMarket.superMarketName + "錢包剩余" + customer.money);
   }


   //在購買流程外部創(chuàng)建變量統(tǒng)計總共花費和購買數(shù)量
   double totalCast = 0;
   int numToBuy;


   //購買循環(huán)
   while (true) {


    System.out.println("本店提供" + littleSuperMarket.merchandises.length + "種商品，歡迎選購。請輸入商品編號:");


    int InDex = scanner.nextInt();
    //對商品索引的合法性進行檢測
    if (InDex <= 0) {
     break;
    }
    if (InDex > littleSuperMarket.merchandises.length - 1) {
     System.out.println("對不起，本店沒有那么多商品。請輸入0到" + (littleSuperMarket.merchandises.length - 1) + "之間的數(shù)字");
     continue;
    }


    System.out.println("您選購的商品的名字是:" + littleSuperMarket.merchandises[InDex].name + "\t售價為：" + littleSuperMarket.merchandises[InDex].soldPrice);
    System.out.println("請問你要買幾個？");

    numToBuy = scanner.nextInt();
    //對購買數(shù)量的合法性進行檢測
    if (numToBuy <= 0) {
     System.out.println("不買看看也好，歡迎繼續(xù)選購");
     continue;
    }
    if (numToBuy > littleSuperMarket.merchandises[InDex].count) {
     System.out.println("本店沒有那么多商品，歡迎繼續(xù)挑選");
     continue;
    }
    /*其實這里的邏輯不太好，但是懶得改了，等再學(xué)習(xí)一段時間再好好完善這個小程序。這里把花費放在購買循環(huán)外面才是比較好的邏輯，然后在這里用if循環(huán)判斷購買的一系列合法性即可。
     或者把售賣個數(shù)的屬性也在這里改變賦值會容易懂，我這里放到后面了，懶得改了。等下次優(yōu)化功能時再整體優(yōu)化邏輯
     */

    //輸入合法，求總共花費，并對商品庫存進行相應(yīng)的扣除
    totalCast += littleSuperMarket.merchandises[InDex].soldPrice * numToBuy;
    littleSuperMarket.merchandises[InDex].count -= numToBuy;


    //仍然屬于合法性檢測，檢測顧客的錢是否夠支付他所購買商品的總價
    if (customer.money < totalCast) {

     System.out.println("對不起，您身上的錢不足以支付您的商品，歡迎下次選購");
     //錢不足以支付，對應(yīng)商品的數(shù)量再把剛才購買但未成功支付的商品數(shù)量歸還
     //就像你在超市里買東西，放進購物車了，貨架上超市庫存少了，其他顧客拿不到了，等你支付時錢不夠，商品被放回，其他顧客可以拿到的數(shù)量增加，即商品庫存增加
     littleSuperMarket.merchandises[InDex].count += numToBuy;
     //這一段當(dāng)時寫的時候我也比較亂
     //因為總價計算在外面了，此時總價已將超出了你的錢數(shù)循環(huán)從這里出去如果總價不置零，你的錢數(shù)一直小于總價，該顧客一直無法購買商品
     totalCast = 0;

    } else {
     //正確購買，售出數(shù)量對應(yīng)增加，顧客口袋里的錢對應(yīng)減少
     littleSuperMarket.merchandisesold[InDex] += numToBuy;
     customer.money -= totalCast;

     //開車來的話，顧客離開，車位釋放
     if (customer.isDrivingCar) {
      littleSuperMarket.parkingCount++;
     }
    }
   }

   littleSuperMarket.incomingSum += totalCast;
   //每次循環(huán)結(jié)束，該人總錢數(shù)得出將該人的totalCast累加到littleSuperMarket.incomingSum中，得出總共收入
   //littleSuperMarket.incomingSum和totalIncoming數(shù)值相等，基本為同一意思
   //littleSuperMarket.incomingSum += totalCast;

   System.out.println("顧客" + customer.name + "號的顧客共消費" + totalCast + "，還剩余" + customer.money);
   System.out.println("今天還要繼續(xù)營業(yè)嗎？");
   open = scanner.nextBoolean();
  }

  System.out.println("超市關(guān)門了！");
  System.out.println("今天總的營業(yè)額為" + littleSuperMarket.incomingSum + "營業(yè)情況如下：");


  //定義總收入和總凈利潤
  double totalNetIncoming = 0;
  double totalIncoming = 0;


  for (int i = 0; i < littleSuperMarket.merchandisesold.length; i++) {
   //只統(tǒng)計售出數(shù)量大于0的商品
   if (littleSuperMarket.merchandisesold[i] > 0) {
    //計算總利潤和總凈利潤，通過累加求得
    double incoming = littleSuperMarket.merchandises[i].soldPrice * littleSuperMarket.merchandisesold[i];
    double netIncoming = (littleSuperMarket.merchandises[i].soldPrice - littleSuperMarket.merchandises[i].purchasePrice) * littleSuperMarket.merchandisesold[i];
    totalIncoming += incoming;
    totalNetIncoming += netIncoming;
    System.out.println(littleSuperMarket.merchandises[i].name + "售出了" + littleSuperMarket.merchandisesold[i] + "個。銷售額為" + incoming + ",凈利潤為" + netIncoming);

   }
  }
  System.out.println("今日總銷售額為：" + totalIncoming + ";今日總凈利潤為：" + totalNetIncoming);
 }
}