class Vacationer {

    constructor(fullName, creditCard) {
        this.fullName = fullName;
        this.creditCard = creditCard;
        this.wishList = [];
        this.idNumber = 0;
    }
    generateIDNumber() {
        //231 * firstName’s first letter’s ASCII code + 139 * middleName length
        let firstLetterAscii = (this.fullName.firstName.charAt(0)).charCodeAt(0);
        let sum = (231 * firstLetterAscii) + (139 * this.fullName.middleName.length);
        let lastLetter = this.fullName.lastName.charAt(this.fullName.lastName.length - 1)
        let last = '7'
        if (lastLetter === 'a' || lastLetter === 'u' || lastLetter === 'o' || lastLetter === 'i' || lastLetter === 'e') {
            last = '8';
        }
        this._idNumber = sum + last;
    }

    get idNumber() {


        return this._idNumber;
    }
    set idNumber(value) {
        this.generateIDNumber()
    }

    get fullName() {
        return this._fullName;
    }
    set fullName(value) {
        let firstName = value[0];
        let middleName = value[1];
        let lastName = value[2];
        let pattern = /^[A-Z][a-z]+$/;
        if (value.length != 3) {
            throw new Error("Name must include first name, middle name and last name");
        }
        if (!(pattern.test(firstName) && pattern.test(middleName) && pattern.test(lastName))) {
            throw new Error("Invalid full name");
        }

        this._fullName = {
            firstName,
            middleName,
            lastName,
        }
    }
    get creditCard() {
        return this._creditCard;
    }
    set creditCard(value) {
        if (value !== undefined) {
            if (value.length !== 3) {
                throw new Error("Missing credit card information")
            }
            let cardNumber = value[0];
            let expirationDate = value[1];
            let securityNumber = value[2];
            if (typeof (cardNumber) !== 'number' || typeof (securityNumber) !== 'number') {
                throw new Error("Invalid credit card details");
            }
            this._creditCard = {
                cardNumber,
                expirationDate,
                securityNumber,
            }
        } else {

            this._creditCard = {
                cardNumber: 1111,
                expirationDate: "",
                securityNumber: 111,
            }
        }
    }

    addDestinationToWishList(destination) {
        if (this.wishList.includes(destination)) {
            throw new Error("Destination already exists in wishlist");
        }
        this.wishList.push(destination);
        this.wishList.sort((a, b) => a.length - b.length);
    }
    addCreditCardInfo(creditCard) {
        this.creditCard = creditCard;
    }
    getVacationerInfo() {
        let result = `Name: ${this.fullName.firstName} ${this.fullName.middleName} ${this.fullName.lastName}\nID Number: ${this.idNumber}\nWishlist:\n`;
        if (this.wishList.length === 0) {
            result += "empty";
        } else {
            result += this.wishList.join(", ");
        }
        result +=
            `\nCredit Card:\nCard Number: ${this.creditCard.cardNumber}\nExpiration Date: ${this.creditCard.expirationDate}\nSecurity Number: ${this.creditCard.securityNumber}`
        return result;
    }
}