package com.company;
import java.sql.SQLOutput;
import java.util.List;
import java.util.Scanner;
import java.util.ArrayList;

class Contact {
    private String name;
    private String surname;
    private String number;

    public String getNumber() {
        return number;
    }
    public void setNumber(String number) {
        this.number = number;
    }

    private String validateNumber(String number) {
        if (number.matches("^[+]?[(]?\\w[)]?[\\s-]?[(]?\\w{2,}[)]?")) {
            return number;
        } else {
            System.out.println("Wrong number Format!");
            return "[no number]";
        }
    }
    public void hasNumber() {
        if(number.isEmpty()) {
            this.number = "";
        }
    }
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getSurname() {
        return surname;
    }

    public void setSurname(String surname) {
        this.surname = surname;
    }

    Contact(String name, String surname, String number) {
        this.name = name;
        this.surname = surname;
        this.number = validateNumber(number);
    }

}

public class Main {
    public static Main instance;
    public List<Contact> contacts;
    Scanner scanner;
    Integer record;
    String field;
    String option;

    public static void main(String[] args) {

        instance = new Main();
        instance.init();
        instance.run();

    }
    private void init() {
        contacts = new ArrayList<>();
        scanner = new Scanner(System.in);
    }
    private void run() {

        System.out.println("Enter action (add, remove, edit, count, list, exit):");

        option = scanner.nextLine();

        switch (option) {
            case "add":
                addContact();
                break;
            case "remove":
                removeContact();
                break;
            case "edit":
                editContacts();
                break;
            case "count":
                countContacts();
                break;
            case "list":
                listContacts();
                break;
            case "exit":
                System.exit(0);
                break;
            default:
                System.out.println("Error");
        }

    }

    private void addContact() {
        System.out.println("Name:");
        String name = scanner.next();
        System.out.println("Surname:");
        String surname = scanner.next();
        System.out.println("phone number:");
        String number = scanner.next();
        contacts.add(new Contact(name, surname, number));
        System.out.println("The record added.");
        instance.run();
    }
    private void removeContact() {
        if (contacts.isEmpty()) {
            System.out.println("No records to remove!");
            instance.run();
        } else {
            for (Contact current : contacts) {
                System.out.println(current);
            }
            System.out.println("Select a record:");
            record = scanner.nextInt();
            contacts.remove(record);
            System.out.println("The record removed!");
            instance.run();
        }
    }
    private void editContacts() {
        if (contacts.isEmpty()) {
            System.out.println("No records to edit!");
            instance.run();
        } else {
            System.out.println("Select a record:");
            record = scanner.nextInt();
            System.out.println("Select a field (name, surname, number):");

            field = scanner.nextLine();

            if (field.equals("name")) {
                String name = scanner.nextLine();
                contacts.get(record).setName(name);
                System.out.println("The record updated!");
            } else if (field.equals("surname")) {
                String surname = scanner.next();
                contacts.get(record).setSurname(surname);
                System.out.println("The record updated!");
            } else if (field.equals("number")) {
                String number = scanner.next();
                contacts.get(record).setNumber(number);
                System.out.println("The record updated!");
            } else {
                System.out.println();
            }

            instance.run();
        }
    }

    private void countContacts(){
        System.out.println("The PhoneBook has " + contacts.size() + " records.");
        instance.run();
    }

    private void listContacts() {
        for(Contact current : contacts) {
            System.out.println(current);
        }
        instance.run();
    }

}