using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp9
{
    class MobliePhone
    {
        List<Contact> ContactsList = new List<Contact> { };

        public void menu()
        {
            Console.WriteLine("Choose Option:");
            Console.WriteLine("0 - Quit");
            Console.WriteLine("1 - Print List Of Contatcs");
            Console.WriteLine("2 - Add new Contact");
            Console.WriteLine("3 - Update Existing Contact");
            Console.WriteLine("4 - Remove Exisitng Object");
            Console.WriteLine("5 - Find Contact");


            bool MenuOption = true;
            while (MenuOption)
            {
                int number = Convert.ToInt32(Console.ReadLine());
                switch (number)
                {
                    case 0:
                        MenuOption = false;
                        break;
                    case 1:
                        PrintListOfContacts();
                        break;
                    case 2:
                        addNewContact();
                        break;
                    case 3:
                        UpdateExistingContact();
                        break;
                    case 4:
                        RemoveExistingContact();
                        break;
                    case 5:
                        FindContact();
                        break;

                }
            }
        }

        bool FindContact()
        {
            Console.WriteLine("Enter Name:");
            string name = Console.ReadLine();
            Console.WriteLine(FindContact(name));

            return false;
        }
        bool FindContact(string name)
        {
            for (int i = 0; i < ContactsList.Count; i++)
            {
                if (ContactsList[i].name == name)
                {
                    Console.WriteLine("Contact:" + name + "On position:" + i);
                    return true;
                }
            }
            return false;
        }

        private void RemoveExistingContact()
        {
            string imie;
            string number;
            Console.WriteLine("Enter Name:");
            imie = Console.ReadLine();

            int ifDel = 0;

            foreach (var item in ContactsList)
            {
                if (item.name.Equals(imie))
                {
                    ContactsList.Remove(item);
                    ifDel++;
                    break;
                }

            }
            if (ifDel == 0)
            {
                Console.WriteLine("Contact dosent exsist");
            }

        }

        private void UpdateExistingContact()
        {
            string imie;
            string number;
            Console.WriteLine("Enter Name:");
            imie = Console.ReadLine();
            int ifEdit = 0;
            foreach (var item in ContactsList)
            {
                if (item.name == imie)
                {
                    Console.WriteLine("Enter new name");
                    string newName = Console.ReadLine();
                    item.name = newName;
                    Console.WriteLine("Enter new phone number");
                    string newPN = Console.ReadLine();
                    item.tel = newPN;
                    ifEdit++;

                }
            }
            if (ifEdit == 0)
            {
                Console.WriteLine("Contact dosent exist");
            }
        }

        private void addNewContact()
        {

            string imie;
            string number;
            Console.WriteLine("Enter Name:");
            imie = Console.ReadLine();
            Console.WriteLine("Enter phone number");
            number = Console.ReadLine();
            if (FindContact(imie) == true)
            {
                Console.WriteLine("Contact already exist");
            }
            else
            {
                ContactsList.Add(new Contact(imie, number));
            }

        }


        private void PrintListOfContacts()
        {
            foreach (var item in ContactsList)
            {
                Console.WriteLine("Tel and Name" + item.tel +"  "+ item.name);
            }
        }
    }
    }