using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Threading;
using static System.Console;
using System.IO;


namespace Projektopgave
{
    class Program
    {
        static void Main(string[] args)
        {
            CursorVisible = false;

            BackgroundColor = ConsoleColor.White;
            ForegroundColor = ConsoleColor.DarkBlue;

            Clear();


            string Bar1 = "Information System";
            var title1 = "";



            while (true)
            {
                for (int K = 0; K < Bar1.Length; K++)
                {
                    title1 += Bar1[K];
                    Title = title1;
                    Thread.Sleep(25);

                }
                title1 = "";
                break;
            }



            string title = @"








                           _____                                 _______
                          |  __ \                               |__   __|
                          | |  | | _ __  ___   __ _  _ __ ___      | |  ___   __ _  _ __ ___
                          | |  | || '__|/ _ \ / _` || '_ ` _ \     | | / _ \ / _` || '_ ` _ \
                          | |__| || |  |  __/| (_| || | | | | |    | ||  __/| (_| || | | | | |
                          |_____/ |_|   \___| \__,_||_| |_| |_|    |_| \___| \__,_||_| |_| |_|





                                                                 ";

            WriteLine(title);
            Thread.Sleep(3500);
            Clear();

            Main_Projekt();
        }

        private static void Main_Projekt()
        {
            CursorVisible = true;

            BackgroundColor = ConsoleColor.White;
            ForegroundColor = ConsoleColor.Black;


            Clear();

            ConsoleKeyInfo Tast = new ConsoleKeyInfo();


            do
            {
                //Overskift
                Write("                          <<<  Dream Team's information Systems - Gæste-registrering >>>");

                //Laver Enters
                WriteLine();
                WriteLine();

                //Udskriver
                WriteLine("Telefon nr : ");
                WriteLine("Navn       : ");
                WriteLine("Adresse    : ");
                WriteLine("Postnr     : ");
                WriteLine("By         : ");
                WriteLine("E-Mail     : ");

                //Laver linje skift
                WriteLine();
                WriteLine();
                WriteLine();
                WriteLine();

                //Udskriver
                WriteLine("[O] Opret  [F] Find  [V] Vis alle  [X] Slet Fil  [Q] Afslut");

                //Laver linje skift
                WriteLine();
                WriteLine();

                //
                Write("Vælg funktion  : ");

                Tast = ReadKey(true);

                switch (Tast.Key)
                {
                    case ConsoleKey.O: OpretB(); break;
                    case ConsoleKey.F: Find(); break;
                    case ConsoleKey.V: VisAlle(); break;
                    case ConsoleKey.X: Delete(); break;
                    case ConsoleKey.Q: Exit(); break;

                }

                Clear();

            } while (Tast.Key != ConsoleKey.Escape);


        }

        private static void OpretB()
        {
            using (StreamWriter file = new StreamWriter(@"C:\Users\Bruger\Desktop\Projekt_C#\Data.txt", true))
            {


                file.Dispose();
                string tlf;
                SetCursorPosition(13, 2);
                tlf = ReadLine();

                string[] tlftxt = File.ReadAllLines(@"C:\Users\Bruger\Desktop\Projekt_C#\Data.txt");

                bool findes = false;

                for (int x = 0; x < tlftxt.Length; x++)
                    if (tlf == tlftxt[x])
                    {
                        SetCursorPosition(13, 2);
                        Write("Telefon nummeret eksitere allerede i systemet");
                        findes = true;
                        Thread.Sleep(2000);

                        Main_Projekt();



                    }

                if (!findes)
                {

                    SetCursorPosition(25, 2);
                    Write("Kan oprettes");

                }

                string Navn, adresse, postnr, by, email;

                SetCursorPosition(13, 3);
                Navn = ReadLine();
                SetCursorPosition(13, 4);
                adresse = ReadLine();
                SetCursorPosition(13, 5);
                postnr = ReadLine();
                SetCursorPosition(13, 6);
                by = ReadLine();
                SetCursorPosition(13, 7);
                email = ReadLine();
                string[] info = {tlf, Navn, adresse, postnr, by, email + Environment.NewLine};

                File.AppendAllLines(@"C:\Users\Bruger\Desktop\Projekt_C#\Data.txt", info);

                WriteLine("Oplysninger gemmes . . . . ");

                Clear();

                file.Close();

                Main_Projekt();


            }


        }

        public static void Find()
        {
            Clear();

            if (System.IO.File.Exists(@"C:\Users\Bruger\Desktop\Projekt_C#\Data.txt"))
            {
                // Array som finder text fra data filen som skal bruges senere i koden

                Clear();

                Write("Søg efter personer med telefon nr: \n\ntlf nr : ");

                string lookup;

                lookup = ReadLine();

                string[] text = File.ReadAllLines(@"C:\Users\Bruger\Desktop\Projekt_C#\Data.txt");

                //laver et array med all teksten i vores fil
                for (int x = 0; x < text.Length; x++)
                {
                    if (text[x].Contains(lookup))    //kigger om vores string findes i vores fil
                    {
                        Write("\nFundet!");
                        Write("\n" + text[x] + "\n" + text[x + 1] + "\n" + text[x + 2] + "\n" + text[x + 3] + "\n" + text[x + 4] + "\n" + text[x + 5]);
                    }

                }


                Thread.Sleep(1500);

                WriteLine();

                WriteLine("Tryk enter for at gå tilbage");

                ReadLine();

                Clear();

                Main_Projekt();

            }
            else Write("Filen er tom");

            Thread.Sleep(1500);

            Clear();

            Main_Projekt();



        }

        private static void VisAlle()
        {
            if (System.IO.File.Exists(@"C:\Users\Bruger\Desktop\Projekt_C#\Data.txt"))
            {
                Clear();
                WriteLine("Indhold af databasen");

                WriteLine();
                WriteLine();

                string alle = File.ReadAllText(@"C:\Users\Bruger\Desktop\Projekt_C#\Data.txt");
                WriteLine(alle);

                Thread.Sleep(1500);

                WriteLine("Tryk enter for at gå tilbage");

                ReadLine();

                Clear();

                Main_Projekt();

            }

            else

                Clear();

            Write("Filen er tom");

            Thread.Sleep(2500);

            Main_Projekt();
        }

        private static void Delete()
        {
            ConsoleKeyInfo Tast = new ConsoleKeyInfo();


            Clear();
            if (System.IO.File.Exists(@"C:\Users\Bruger\Desktop\Projekt_C#\Data.txt"))
            {
                WriteLine("Er du sikker du vil slette Data?");

                WriteLine();

                WriteLine("J = Ja N = Nej");

                Write("Valg: ");

                Tast = ReadKey(true);


                switch (Tast.Key)
                {
                    case ConsoleKey.J:

                        Clear();

                        System.IO.File.Delete(@"C:\Users\Bruger\Desktop\Projekt_C#\Data.txt");

                        Write("Filen blev slettet");

                        Thread.Sleep(2500);

                        Main_Projekt();

                        break;

                    case ConsoleKey.N:

                        Clear();

                        Write("Filen blev ikke slettet");

                        Thread.Sleep(2500);

                        Main_Projekt();

                        break;


                }



            }
            else WriteLine("Filen findes ikke");

            Thread.Sleep(2500);

            Main_Projekt();




        }

        private static void Exit()
        {

            Clear();

            WriteLine("Programmet bliver lukket ned, Vent Venligst");
            Thread.Sleep(2000);
            Environment.Exit(0);


        }
    }
}