HW - Dialog.cs

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

namespace ConsoleApplicationHW
{
    class Dialog
    {
        static int AskForCommand(int qtyOfCommands)
        {
            int act;
            bool ok;
            do
            {
                Console.Write("Команда: ");
                string buf = Console.ReadLine();
                ok = int.TryParse(buf, out act) && act >= 0 && act <= qtyOfCommands;
                if (!ok)
                    Console.WriteLine("Доступны команды 0 - " + qtyOfCommands + ".");
            } while (!ok);
            return act;
        }
        static double AskForDouble()
        {
            double res;
            string val = "";
            bool ok;
            do
            {
                Console.Write("operand> ");
                val = Console.ReadLine();
                ok = double.TryParse(val, out res);
                if (!ok)
                {
                    Console.WriteLine("Ошибка. Проверьте вводимые данные");
                }
            } while (!ok);
            return res;
        }
        static DegreeValue AskForDegree()
        {
            DegreeValue res;
            string val = "";
            do
            {
                Console.Write("operand> ");
                val = Console.ReadLine();
                res = Parse(val);
                if (res == null)
                {
                    Console.WriteLine("Ошибка. Проверьте вводимые данные");
                }
            } while (res == null);
            return res;
        }
        static int AskForInt()
        {
            int res;
            string val = "";
            bool ok;
            do
            {
                Console.Write("operand> ");
                val = Console.ReadLine();
                ok = int.TryParse(val, out res);
                if (!ok)
                {
                    Console.WriteLine("Ошибка. Проверьте вводимые данные");
                }
            } while (!ok);
            return res;
        }
        static DegreeValue Parse(string operand)
        {
            try
            {
                string[] dms = operand.Split('.');
                int deg = Convert.ToInt32(dms[0]);
                int min = Convert.ToInt32(dms[1]);
                int sec = Convert.ToInt32(dms[2]);
                return new DegreeValue(deg, min, sec);
            }
            catch (Exception)
            {
                return null;
            }
        }
        static void ShowDegreeValueMenu()
        {
            Console.WriteLine("0. В меню");
            Console.WriteLine("1. +");
            Console.WriteLine("2. -");
            Console.WriteLine("3. *");
            Console.WriteLine("4. /");
            Console.WriteLine("5. sin");
            Console.WriteLine("6. cos");
            Console.WriteLine("7. tg");
            Console.WriteLine("8. ctg");
            //Console.WriteLine("9. Ввести новое значение операнда\n");
        }
        static void ShowDoubleMenu()
        {
            Console.WriteLine("0. В меню");
            Console.WriteLine("1. arcsin");
            Console.WriteLine("2. arccos");
            Console.WriteLine("3. arctg");
            Console.WriteLine("4. arcctg");
            //Console.WriteLine("5. Ввести новое значение операнда\n");
        }

        static DegreeValue Multiply(DegreeValue v1)
        {
            Console.Clear();
            v1.Show();
            Console.WriteLine("*");
            int factor = AskForInt();
            return Calculator.Multiply(v1, factor);
        }

        static void Main(string[] args)
        {
            int mainCycle = -1;
            int act = 0;
            do
            {
                Console.Clear();
                Console.WriteLine("0. Выход\n1. Калькулятор\n");
                mainCycle = AskForCommand(1);

                switch (mainCycle)
                {
                    case 1:
                        object result = null;
                        int choise = 0;
                        Console.Clear();

                        Console.WriteLine("Градусы, минуты и секунды вводятся в одну строку без пробелов и разделяются точкой.\n");

                        Console.WriteLine("0. Назад\n1. Ввести градус\n2. Ввести число");
                        choise = AskForCommand(2);
                        Console.Clear();
                        switch (choise)
                        {
                            case 1:
                                result = AskForDegree();
                                break;
                            case 2:
                                result = AskForDouble();
                                break;
                        }
                        Console.Clear();
                        int operation = 0;
                        do
                        {
                            if (result is DegreeValue)
                            {
                                DegreeValue degree = (DegreeValue)result;
                                DegreeValue degree2;
                                Console.Clear();
                                degree.Show();
                                Console.WriteLine();
                                ShowDegreeValueMenu();
                                operation = AskForCommand(8);
                                switch (operation)
                                {
                                    case 1:
                                        Console.Clear();
                                        degree.Show();
                                        Console.WriteLine("+");

                                        degree2 = AskForDegree();
                                        result = Calculator.Plus(degree, degree2);

                                        degree = result as DegreeValue;
                                        degree.Show();
                                        Console.ReadLine();
                                        break;
                                    case 2:
                                        Console.Clear();
                                        degree.Show();
                                        Console.WriteLine("-");

                                        degree2 = AskForDegree();
                                        result = Calculator.Minus(degree, degree2);

                                        degree = result as DegreeValue;
                                        degree.Show();
                                        Console.ReadLine();
                                        break;
                                    case 3:
                                        Console.Clear();
                                        degree.Show();
                                        Console.WriteLine("*");

                                        int factor = AskForInt();
                                        result = Calculator.Multiply(degree, factor);

                                        degree = result as DegreeValue;
                                        degree.Show();
                                        Console.ReadLine();
                                        break;
                                    case 4:
                                        Console.Clear();
                                        degree.Show();
                                        Console.WriteLine("/");

                                        int devisor = AskForInt();
                                        result = Calculator.Divide(degree, devisor);

                                        degree = result as DegreeValue;
                                        degree.Show();
                                        Console.ReadLine();
                                        break;
                                    case 5:
                                        result = Calculator.Sin(degree);
                                        double val = (double)result;
                                        Console.WriteLine("\nsin({0}) = {1}", degree, val);
                                        Console.ReadLine();
                                        break;
                                    case 6:
                                        result = Calculator.Cos(degree);
                                        val = (double)result;
                                        Console.WriteLine("\ncos({0}) = {1}", degree, val);
                                        Console.ReadLine();
                                        break;
                                    case 7:
                                        result = Calculator.Tg(degree);
                                        val = (double)result;
                                        Console.WriteLine("\ntg({0}) = {1}", degree, val);
                                        Console.ReadLine();
                                        break;
                                    case 8:
                                        result = Calculator.Ctg(degree);
                                        val = (double)result;
                                        Console.WriteLine("\nctg({0}) = {1}", degree, val);
                                        Console.ReadLine();
                                        break;
                                }
                            }
                            else if (result is double)
                            {
                                double val = (double)result;
                                Console.Clear();
                                Console.WriteLine(val);
                                Console.WriteLine();
                                ShowDoubleMenu();
                                operation = AskForCommand(4);
                                DegreeValue degree;
                                switch (operation)
                                {
                                    case 1:
                                        if (!(val <= -1 || val >= 1))
                                        {
                                            result = Calculator.ArcSin(val);
                                            degree = result as DegreeValue;
                                            Console.Write("\narcsin({0}) = ", val);
                                            degree.Show();
                                            Console.ReadLine();
                                        }
                                        else
                                        {
                                            Console.WriteLine("Введенные данные не удовлетворяют области значений функции ArcSin");
                                            Console.ReadLine();
                                        }
                                        break;
                                    case 2:
                                        if (!(val <= -1 || val >= 1))
                                        {
                                            result = Calculator.ArcCos(val);
                                            degree = result as DegreeValue;
                                            Console.Write("\narccos({0}) = ", val);
                                            degree.Show();
                                            Console.ReadLine();
                                        }
                                        else
                                        {
                                            Console.WriteLine("Введенные данные не удовлетворяют области значений функции ArcCos");
                                            Console.ReadLine();
                                        }
                                        break;
                                    case 3:
                                        result = Calculator.ArcTg(val);
                                        degree = result as DegreeValue;
                                        Console.Write("\narctg({0}) = ", val);
                                        degree.Show();
                                        Console.ReadLine();
                                        break;
                                    case 4:
                                        result = Calculator.ArcCtg(val);
                                        degree = result as DegreeValue;
                                        Console.Write("\narcctg({0}) = ", val);
                                        degree.Show();
                                        Console.ReadLine();
                                        break;
                                }

                            }
                        } while (operation != 0);
                        break;
                }
            } while (mainCycle != 0);


        }
    }
}