import java.util.Scanner;

public class CommissionTest {
    public static final float HEADPHONE_PRICE = 80;// 耳机单价
    public static final float PROTCTOR_PRICE = 8;// 手机贴膜单价
    public static final float MOBILESHELL_PRICE = 10;// 手机壳单价
    public static final float MIN_RATE = 0.1f;// 不足1000的佣金比率
    public static final float MID_RATE = 0.15f;// 1000-1800的佣金比率
    public static final float MAX_RATE = 0.2f;// 超过1800的佣金比率

    public static void main(String args[]) {
        while (true) {
            Scanner input = new Scanner(System.in);
            System.out.println("请分别输入三种手机配件的销售情况");
            System.out.println("耳机销售情况:");
            int headPhoneNum = checkNum(input.nextLine());
            System.out.println("手机壳销售情况:");
            int mobPhoneShellNum = checkNum(input.nextLine());
            System.out.println("手机贴膜销售情况:");
            int cellSrcProNum = checkNum(input.nextLine());
            float commission = commission(headPhoneNum, mobPhoneShellNum, cellSrcProNum);
            System.out.println("收取的佣金为" + commission);
            System.out.println("是否退出？输入-1退出，按任意数字继续");
            if (Integer.parseInt(input.nextLine()) == -1) {
                System.exit(1);
            }
            System.out.println("----------------------------------");
        }

    }

    public static int checkNum(String num) {// 检查每次输入是否满足条件
        Scanner input = new Scanner(System.in);
        while (true) {
            if(num.equals("")||num == null){
                System.out.println("输入不为空，请重新输入");
                num = input.nextLine();
            }
            else if (!num.matches("^[0-9]*$")) {
                
                System.out.println("输入数量不满足要求,请重新输入");
                num = input.nextLine();

            } else {
                return Integer.parseInt(num);
            }
        }
    }

    // 计算佣金
    public static float commission(int headPhone, int mobPhoneshell, int protctor) {
        float commission = 0;// 佣金
        float headPhoneSale = headPhone * HEADPHONE_PRICE;
        float mobPhoneShellSale = mobPhoneshell * MOBILESHELL_PRICE;
        float protctorSale = protctor * PROTCTOR_PRICE;
        float totalSale = headPhoneSale + mobPhoneShellSale + protctorSale;
        if (totalSale < 1000 && totalSale > 0) {
            commission = totalSale * MIN_RATE;

        } else if (totalSale <= 1800) {
            commission = totalSale * MID_RATE;
        } else {
            commission = totalSale * MAX_RATE;

        }
        return commission;

    }
}