using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace String_Stuff
{
    public partial class stringForm : Form
    {
      public stringForm()
      {
          InitializeComponent();
        }

        private string SwitchCase(string input)
        {
            string str1 = input;
            string output = str1.ToUpper();

            return output;

        }


       private string Reverse(string input)
        {
            string str1 = input;
            char[] inputArray = input.ToCharArray();
            Array.Reverse(inputArray);
            string output = new string(inputArray);

            return output;
      }

       private string PigLatin(string input)
       {
           // rules: words that begin with a consinant-
           //is moved to the end and "ay" is added.
           // words that begin with a vowel-
           // the sylable "ay" is added to the end of the word.
           // e.g. eagle -> eagleay, apple->appleay.
           string str1 = input;
           string ay = "ay";
           input = inputTextBox.Text; // already a string, no need to convert
           input = input.Substring(1, input.Length - 1) + input.Substring(0, 1);
           str1 = " the word in Pig Latin is " + input + ay; // need to use Text property to display string
           string output= str1  ;
           return output;
       }



        private string ShiftCypher(string input, int shift)
        {
            //Each letter in the word is replaced by a letter some fixed number of positions down the alphabet.
            //For this lab, shift by 3. Example: program, shifted by 3 will become surjudp

            string output = null;
            char[] A = null;
            A = input.ToCharArray();
            int temp;
            for (int i = 0; i < input.Length; i++)
            {
                temp = (int) (A[i] + shift);
                output += (char)temp;
            }


            return output;
        }

        private string SubCypher(string input, string charsToSub)

        {
            //Each letter in the word will be replaced by a letter from the corresponding position
            //in a substitution alphabet. For this lab use this substitution alphabet: zeroabcdfghijklmnpqstuvwxy.
            //Example: disk would become ofqh.
            string subAlpha = "zeroabcdfghijklmnpqstuvwxy";
            string str1 = input;
            string subCypher = subAlpha;



            string output = "";
            return output;
        }



        private void transformButton_Click_1(object sender, EventArgs e)
        {
            string input = inputTextBox.Text;

            switchCaseTextBox.Text = SwitchCase(input);
            reverseTextBox.Text = Reverse(input);
            pigLatinTextBox.Text = PigLatin(input);
            shiftTextBox.Text = ShiftCypher(input,shift);
            subTextBox.Text = SubCypher(input, charsToSub);
        }
    }
}