using UnityEngine;
using System.Collections;

public class Test : MonoBehaviour {
	public int buttonSize = 40;
	public int[] sqNumbers = {1,4,9,16,25,36,49,64,81,100,121,144,169};
	private int sqnumber;
	private int size;
	private string alphabet = "abcdefghjklmnopqrstuvwxyz ";
	private string Encalphabet = "abcdefghjklmnopqrstuvwxyz-";
	public string txt2Encrypt;
	public string txt2Decrypt;


		void OnGUI() {

			GUI.Label (new Rect (100, 100, 120, 20), "Cryptografy 101");
			GUI.Label (new Rect (100, 140, 120, 20), "text to encrypt:");
			txt2Encrypt = GUI.TextField (new Rect (220, 140, 120, 20), txt2Encrypt);
			if (GUI.Button (new Rect (100, 170, 120, 20), "Encrypt")) {
				EncryptText(txt2Encrypt);

			}
			GUI.Label (new Rect (100, 190, 120, 20), "text to decrypt:");
			txt2Decrypt = GUI.TextField (new Rect (220, 190, 120, 20), txt2Decrypt);
			if (GUI.Button (new Rect (100, 220, 120, 20), "Decrypt")) {
				DecryptText(txt2Decrypt);
			}

		}
	string EncryptText(string t2e ) {
		string encryption = "";
		int Elen = t2e.Length;
		for (int i=0; i < sqNumbers.Length; i++){
			if (Elen <= sqNumbers[i]) {
				sqnumber = sqNumbers[i];
				size = i+1;
				break;

			}
		}
		string adtxt = t2e + t2e.Substring (0,sqnumber-Elen);
		for (int j=0; j < size; j++){
			for (int k=0; k < size; k++){
				int p= alphabet.IndexOf(adtxt[j+k*size]);
				encryption+= Encalphabet[p];
			}
		}
		print(encryption);
		return encryption;
	}

	string DecryptText(string t2e) {
		string decryption = "";
		int Elen = t2e.Length;
		for (int i=0; i < sqNumbers.Length; i++){
			if (Elen <= sqNumbers[i]) {
				sqnumber = sqNumbers[i];
				size = i+1;
				break;

			}

		}
		for (int j=0; j < size; j++){
			for (int k=0; k < size; k++){
				int p= Encalphabet.IndexOf(decryption[j+k*size]);
				decryption+= alphabet[p];

			}
		}
		print(decryption);
		return decryption;
	}
}