Workers records manager (using only arrays for the workers, positions and final record combinations)

iJunior_C#_Lesson_49

namespace iJuniorPractice
{
    class Program
    {
        static void Main(string[] args)
        {
            const int AddRecordCommand = 1;
            const int ShowRecordsCommand = 2;
            const int DeleteRecordCommand = 3;
            const int SearchBySurnameCommand = 4;
            const int ExitCommand = 5;
            
            string[] commands =
            {
                "Add Record", 
                "Show Records", 
                "Delete Record", 
                "Search By Surname", 
                "Exit"
            };
            string[] workers = new string[0];
            string[] positions = new string[0];
            bool isWork = true;
            
            while (isWork)
            {
                Console.WriteLine(new string('-', 30));
                ShowMenu(commands);

                Console.WriteLine("\nEnter command...");
                
                switch (ReadInt())
                {
                    case  AddRecordCommand:
                        AddRecord( ref workers, ref positions);
                        break;
                
                    case  ShowRecordsCommand:
                        ShowRecords(workers, positions);
                        break;
                
                    case  DeleteRecordCommand:
                        DeleteRecord(ref workers, ref positions);
                        break;
                
                    case SearchBySurnameCommand:
                        SearchBySurname(workers, positions);
                        break;
                
                    case  ExitCommand:
                        isWork = false;
                        Console.WriteLine("Goodbye!");
                        break;
             
                    default:
                        Console.WriteLine("Invalid command!");
                        break;
                }
            }
        }

        static void ShowMenu(string[] commands)
        {
            Console.WriteLine("Main menu:");

            for (int i = 0; i < commands.Length; i++)
            {
                    Console.WriteLine($"{i + 1}. {commands[i]}.");
            }
        }

        static int ReadInt()
        {
            int digit;
            string inputDigit = "";
            string inputMessage = "Enter digit here: ";
            
            inputDigit = GetStringWithMessage(inputMessage);

            while (int.TryParse(inputDigit, out digit) == false)
            {
                Console.WriteLine("Incorrect input, try again.");
                inputDigit = GetStringWithMessage(inputMessage);
            }
            
            return digit;
        }

        static void AddRecord(ref string[] workers, ref string[] positions)
        {
            AddFullName(ref workers);
            AddNewPosition(ref positions);
        }

        static void DeleteRecord(ref string[] workers, ref string[] positions)
        {
            if (workers.Length > 0)
            {
                Console.WriteLine("Enter record ID to delete worker:");
                int recordId = ReadInt() - 1;

                if (recordId < 0 || recordId >= workers.Length)
                {
                    Console.WriteLine("Invalid ID.");
                }
                else
                {
                     workers = RemoveArrayElementAt(workers, recordId);
                     positions = RemoveArrayElementAt(positions, recordId);
                    
                     Console.WriteLine("Record deleted.");
                }
            }
            else
            {
                Console.WriteLine("No records to remove.");
            }
        }
        
        static void AddFullName(ref string[] workers)
        {
            string newFullName, name, surname, patronymic;
            string nameInputMessage = "Enter name: ";
            string surnameInputMessage = "Enter surname: ";
            string patronymicInputMessage = "Enter patronymic: ";
            
            name = GetStringWithMessage(nameInputMessage);
            surname = GetStringWithMessage(surnameInputMessage);
            patronymic = GetStringWithMessage(patronymicInputMessage);
            
            newFullName = String.Join(" ", surname, name, patronymic);
            AddValueToArray(ref workers, newFullName);
        }

        static void AddNewPosition(ref string[] positions)
        {
            string newPosiotion;
            string message = "Enter position name: ";
            
            newPosiotion = GetStringWithMessage(message);
            AddValueToArray(ref positions, newPosiotion);
            Console.WriteLine("New position added.");
        }

        static string GetStringWithMessage(string message = "")
        {
            string inputString;
            
            Console.WriteLine(new string('-', 30));
            Console.Write(message);
            inputString = Console.ReadLine();
            
            return inputString;
        }

        static void AddValueToArray(ref string[] array, string newValue)
        {
            string[] newArray = new string[array.Length + 1];

            for (int i = 0; i < array.Length; i++)
            {
                newArray[i] = array[i];
            }
            
            newArray[newArray.Length - 1] = newValue;
            array = newArray;
        }
        
        static string[] RemoveArrayElementAt(string[] currentArray, int cutElementId)
        {
            string[] newArray = new string[currentArray.Length - 1];

            for (int i = 0, cutedArrayIndex = 0; i < currentArray.Length; i++)
            {
                if (i != cutElementId)
                {
                    newArray[cutedArrayIndex] = currentArray[i];
                    cutedArrayIndex++;
                }
            }

            return newArray;
        }

        static void ShowRecords(string[] workers, string[] positions)
        {
            Console.WriteLine(new string('-', 30));
            Console.WriteLine("Result:");

            if (workers.Length > 0)
            {
                for (int i = 0; i < workers.Length; i++)
                {
                    Console.WriteLine($"{i + 1}. {workers[i]} - {positions[i]}");
                }
            }
            else
            {
                Console.WriteLine("No records found.");
            }
        }

        static void SearchBySurname(string[] workers, string[] positions)
        {
            string surname;
            string surnameInputMessage = "Enter surname: ";
            string[] filteredWorkers = new string[0];
            string[] filteredPositions = new string[0];
            int surnameId = 0;

            surname = GetStringWithMessage(surnameInputMessage);

            for (int i = 0; i < workers.Length; i++)
            {
                if (workers[i].Split()[surnameId].ToLower() == surname.ToLower())
                {
                    AddValueToArray(ref filteredWorkers, workers[i]);
                    AddValueToArray(ref filteredPositions, positions[i]);
                }
            }

            ShowRecords(filteredWorkers, filteredPositions);
        }
    }
}