Homework28

using System;

namespace Homework28
{
    class Program
    {
        static void Main()
        {
            const string CommandUseAddDossier = "1";
            const string CommandUsePrintAllDossier = "2";
            const string CommandUseDeleteDossier = "3";
            const string CommandUseSearchBySurname = "4";
            const string CommandUseExit = "5";

            string[] fullNamesOfEmployees = { "Ivanov Ivan Sergeevich" };
            string[] positionsOfEmployees = { "Programmer" };

            string userInput;
            bool isOpen = true;

            while (isOpen)
            {
                Console.Write($"{CommandUseAddDossier} - Добавить досье сотрудника.\n{CommandUsePrintAllDossier} - Вывести досье всех сотрудников.\n{CommandUseDeleteDossier} - Удалить досье сотрудника.\n{CommandUseSearchBySurname} - Найти досье сотрудника по его фамилии.\n{CommandUseExit} - Выйти из программы.");

                Console.Write("\n\nВведите пункт меню: ");
                userInput = Console.ReadLine();

                Console.Clear();

                switch (userInput)
                {
                    case CommandUseAddDossier:
                        AddNewEmployeeDosier(ref fullNamesOfEmployees, ref positionsOfEmployees);
                        break;
                    case CommandUsePrintAllDossier:
                        PrintDossierOfAllEmployees(fullNamesOfEmployees, positionsOfEmployees);
                        break;
                    case CommandUseDeleteDossier:
                        DeleteEmployeeDossier(ref fullNamesOfEmployees, ref positionsOfEmployees);
                        break;
                    case CommandUseSearchBySurname:
                        FindEmployeeBySurname(fullNamesOfEmployees, positionsOfEmployees);
                        break;
                    case CommandUseExit:
                        isOpen = false;
                        break;
                }

                Console.ReadKey();
                Console.Clear();
            }
        }

        static void AddNewEmployeeDosier(ref string[] fullNamesOfEmployees, ref string[] positionsOfEmployees)
        {
            Console.Write("Введите полное имя сотрудника: ");
            string userInput = Console.ReadLine();
            AddNewEmployeeInformation(ref fullNamesOfEmployees, userInput);

            Console.Write("Введите должность сотрудника: ");
            userInput = Console.ReadLine();
            AddNewEmployeeInformation(ref positionsOfEmployees, userInput);
        }

        static void PrintDossierOfAllEmployees(string[] fullNamesOfEmployees, string[] positionsOfEmployees)
        {
            Console.WriteLine("Досье всех сотрудников: ");
            for (int i = 0; i < fullNamesOfEmployees.Length; i++)
            {
                Console.WriteLine($"{i + 1}) {fullNamesOfEmployees[i]} - {positionsOfEmployees[i]}.");
            }
        }

        static void DeleteEmployeeDossier(ref string[] fullNamesOfEmployees, ref string[] positionsOfEmployees)
        {
            Console.Write("Введите номер списка для удаления сотрудника: ");
            int indexOfEmployee = Convert.ToInt32(Console.ReadLine()) - 1;
            if (fullNamesOfEmployees.Length != 0)
            {
                if (indexOfEmployee < fullNamesOfEmployees.Length && indexOfEmployee >= 0)
                {
                    DeleteEmployeeInformation(ref fullNamesOfEmployees, indexOfEmployee);
                    DeleteEmployeeInformation(ref positionsOfEmployees, indexOfEmployee);
                }
                else
                {
                    Console.Write("Сотрудника с таким номером нет.");
                }
            }
            else
            {
                Console.Write("В списке отсутствуют действующие сотруники.");
            }
        }

        static void FindEmployeeBySurname(string[] fullNamesOfEmployees, string[] positionsOfEmployees)
        {
            string userInput;
            bool employeeIsFound = false;

            Console.Write("Введите фамилию сотрудника: ");

            userInput = Console.ReadLine();

            for (int i = 0; i < fullNamesOfEmployees.Length; i++)
            {
                string surname = fullNamesOfEmployees[i].Split()[0];

                if (surname == userInput)
                {
                    Console.WriteLine($"{i + 1}) {fullNamesOfEmployees[i]} - {positionsOfEmployees[i]}.");
                    employeeIsFound = true;
                }
            }

            if (employeeIsFound == false)
            {
                Console.WriteLine("Сотрудника с такой фамилией нет.");
            }
        }

        static void AddNewEmployeeInformation(ref string[] informationAboutEmployees, string informationAboutEmployee)
        {
            string[] tempArrayInformation = new string[informationAboutEmployees.Length + 1];

            for (int i = 0; i < informationAboutEmployees.Length; i++)
            {
                tempArrayInformation[i] = informationAboutEmployees[i];
            }

            tempArrayInformation[tempArrayInformation.Length - 1] = informationAboutEmployee;
            informationAboutEmployees = tempArrayInformation;
        }

        static void DeleteEmployeeInformation(ref string[] informationAboutEmployee, int indexOfEmployee)
        {
            string[] tempArrayInformation = new string[informationAboutEmployee.Length - 1];

            for (int i = 0; i < indexOfEmployee; i++)
            {
                tempArrayInformation[i] = informationAboutEmployee[i];
            }

            for (int i = indexOfEmployee + 1; i < informationAboutEmployee.Length; i++)
            {
                tempArrayInformation[i - 1] = informationAboutEmployee[i];
            }

            informationAboutEmployee = tempArrayInformation;
        }
    }
}