const readline = require("readline-sync");
let time = 0; //輸密碼次數
let x = 1; //臨時變量
console.log("請輸入您的密碼");
let password = readline.question() - 0;
while (password != 123456) {
    console.log("您輸入的密碼有誤,請重新輸入");
    password = readline.question() - 0;
    time++;
    if (time == 2) {
        console.log("密碼三次錯誤，卡已被鎖定");
        
 
break;
    }
}
//以上為確認密碼正確
if(password == 123456){
    let balance = 2000; //默認卡內余額為兩千
    while (x == 1) {
        console.log("請選擇業務");
        console.log("1.存款");
        console.log("2.取款");
        console.log("3.查看");
        console.log("4.退出");
        let check = readline.question() - 0;
        while
 
 (isNaN(check) || check < 1 || check > 4) {
            console.log("請重輸");
            check = readline.question() - 0;
        }
        if (check == 4) {
            console.log("感謝使用，再見");
            break;
        }
        if (check == 3) {
            console.log(`銀行卡余額為${balance}元`);
            console.log(
 
"退出請按1，返回主菜單請按2");
            let get = readline.question() - 0;
            while (isNaN(get) || get < 1 || get > 2) {
                console.log("請重輸");
                get = readline.question() - 0;
            }
            if (get == 1) {
                console.log("感謝使用，再見");
                x++;
            }
        }
        while (check == 2) {
            if (balance == 0) {
                console.log("請註意，卡裏沒有錢啦");
                console.log("退出請按1，返回主菜單請按2");
                let choice2 = readline.question()-0;
                while (isNaN(choice2) || choice2 < 1 || choice2 > 2) {
                    console.log("請重輸");
                    choice2 = readline.question() - 0;
                }
                if (choice2 == 1) {
                    console.log("感謝使用，再見");
                    x++;
                    break;
                }else{
                    break;
                }
            }
            console.log("請輸入取款金額：");
            let drawmoney = readline.question()-0;
            while (isNaN(drawmoney) || drawmoney < 0 || drawmoney > 20000) {
                console.log("單筆取款不得超過兩萬，請輸入正確的數字");
                drawmoney = readline.question() - 0;
            }
            let h =balance;//臨時變量
            while (drawmoney > h) {
                console.log("取款金額超過余額，請重新輸入");
                drawmoney = readline.question()-0;
            }
            balance -= drawmoney;        
            console.log(`取款金額為${drawmoney}元,卡內剩余${balance}元`);
            console.log("退出請按1，繼續取款請按2，返回主菜單請按3");
            let choice1 = readline.question() - 0;
            while (isNaN(choice1) || choice1 < 1 || choice1 > 3) {
                console.log("請重輸");
                choice1 = readline.question() - 0;
            }
            if (choice1 == 1) {
                console.log("感謝使用，再見");
                x++;
                break;
            }else if(choice1 == 2){
                check == 2;
            }else{
                break;
            }
        }
        while (check == 1) {
            console.log("請輸入存入金額：");
            let savemoney = readline.question()-0;
            while (isNaN(savemoney) || savemoney < 0 || savemoney > 50000) {
                console.log("單筆存款不得超過五萬，請輸入正確的數字");
                savemoney = readline.question() - 0;
            }
            balance += savemoney;
            console.log(`存入金額為${savemoney}元,卡內剩余${balance}元`);
            console.log("退出請按1，繼續存款請按2，返回主菜單請按3");
            let choice = readline.question() - 0;
            while (isNaN(choice) || choice < 1 || choice > 3) {
                console.log("請重輸");
                choice = readline.question() - 0;
            }
            if (choice == 1) {
                console.log("感謝使用，再見");
                x++;
                break;
            }else if(choice == 2){
                check == 1;
            }else{
                break;
            }
        }
    }
}

JavaScript模擬ATM業務