var readline = require("readline-sync");

//3a
class Contact{
    constructor(name, mobileNumber){
        this.name = name;
        this.mobileNumber = mobileNumber;
    }

    getContactDetails(){
        console.log("Name: " + this.name + "\nMobile Number: " + this.mobileNumber);
    }
}

//3b
class AddressBook{
    //i
    constructor() {
        this.myContact = [];  //class property
        this.myContact.push(new Contact("Homer", 98849959));
        this.myContact.push(new Contact("Marge", 84774744));
        this.myContact.push(new Contact("Lisa", 86994994));
        this.myContact.push(new Contact("Maggie", 94775883));
        this.myContact.push(new Contact("Bart", 88838848));
    } //end constructor

    //ii
    getNumberofContacts(){
        console.log(this.myContact.length);
    }

    //iii
    getContactAt(index){
        console.log(this.myContact[index]);
    }

    //iv
    searchContact(search){
        for(var i = 0; i < this.myContact.length; i++){
            if(search != this.myContact[i].name){
                i++
            }
            else{
                console.log(this.myContact[i].mobileNumber);
            }
        }
    }

    myAddressBook(){
        var dowhat = readline.question("Personal Addressbook\n--------------------------\n(1) Show All Contacts\n(2) Search Contact\n(3) Exit\n>> ")
        if(dowhat == 1){
            var i = 0
            while(i >= 0 || i < this.myContact.length){
                console.log("-----------------------------\nContact " + (i + 1) + " of 5\n-----------------------------\n" + "Name: " + this.myContact[i].name + "\nMobile Number: " + this.myContact[i].mobileNumber + "\n-----------------------------");
                var nextaction = readline.question("(Press N for next contact, P for previous contact, X to exit)\n>> ");
                if(nextaction == "N" || nextaction == "n"){
                    i++
                }
                if(nextaction == "P" || nextaction == "p"){
                    i--
                }
                if(nextaction == "X" || nextaction == "x"){
                    this.myAddressBook()
                }
            }
        }

        else if(dowhat == 2){
            var s = readline.question("Enter the name of the contact: ");
            console.log(s + "'s mobile number is " + this.searchContact(s))
        }

        else if(dowhat == 3){
            console.log("Good Bye!")
        }
    }
}

// var contact = new Contact("Joel", 91456151);
// contact.getContactDetails();

// var a = new AddressBook();
// a.getNumberofContacts();
// a.getContactAt(2);
// a.searchContact("Homer");

//3c
var addbk = new AddressBook();
addbk.myAddressBook();