Register

using UnityEngine;
using UnityEngine.UI;
using System.Collections;
using System;
using System.Text.RegularExpressions;

public class Register : MonoBehaviour {
    public GameObject username;
    public GameObject email;
    public GameObject password;
    public GameObject confPassword;
    public GameObject dialogue;
    public GameObject completeDialogue;
    private string Username;
    private string Email;
    private string Password;
    private string ConfPassword;
    private string form;
    private bool EmailValid = false;
    private string[] Characters = {"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z",
                                   "A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z",
                                   "1","2","3","4","5","6","7","8","9","0","_","-"};

    public void RegisterButton(){
        bool UN = false;
        bool EM = false;
        bool PW = false;
        bool CPW = false;

        if (Username != ""){
            if (!System.IO.File.Exists(@"C:/UnityTestFolder/"+Username+".txt")){
                UN = true;
            } else {
                Debug.LogWarning("Username Taken");
                dialogue.SetActive(true);
            }
        } else {
            Debug.LogWarning("Username field Empty");
            dialogue.SetActive(true);
        }
        if (Email != ""){
            EmailValidation();
            if (EmailValid){
                if(Email.Contains("@")){
                    if(Email.Contains(".")){
                        EM = true;
                    } else {
                        Debug.LogWarning("Email is Incorrect");
                        dialogue.SetActive(true);
                    }
                } else {
                    Debug.LogWarning("Email is Incorrect");
                    dialogue.SetActive(true);
                }
            } else {
                Debug.LogWarning("Email is Incorrect");
                dialogue.SetActive(true);
            }
        } else {
            Debug.LogWarning("Email Field Empty");
            dialogue.SetActive(true);
        }
        if (Password != ""){
            if(Password.Length > 5){
                PW = true;
            } else {
                Debug.LogWarning("Password Must Be atleast 6 Characters long");
                dialogue.SetActive(true);
            }
        } else {
            Debug.LogWarning("Password Field Empty");
            dialogue.SetActive(true);
        }
        if (ConfPassword != ""){
            if (ConfPassword == Password){
                CPW = true;
            } else {
                Debug.LogWarning("Passwords Don't Match");
                dialogue.SetActive(true);
            }
        } else {
            Debug.LogWarning("Confirm Password Field Empty");
            dialogue.SetActive(true);
        }
        if (UN == true&&EM == true&&PW == true&&CPW == true){
            bool Clear = true;
            int i = 1;
            foreach(char c in Password){
                if (Clear){
                    Password = "";
                    Clear = false;
                }
                i++;
                char Encrypted = (char)(c * i);
                Password += Encrypted.ToString();
            }
            form = (Username+Environment.NewLine+Email+Environment.NewLine+Password);
            System.IO.File.WriteAllText(@"C:/UnityTestFolder/"+Username+".txt", form);
            username.GetComponent<InputField>().text = "";
            email.GetComponent<InputField>().text = "";
            password.GetComponent<InputField>().text = "";
            confPassword.GetComponent<InputField>().text = "";
            print ("Registration Complete");
            completeDialogue.SetActive(true);
        }

    }

    // Update is called once per frame
    void Update () {
        if (Input.GetKeyDown(KeyCode.Tab)){
            if (username.GetComponent<InputField>().isFocused){
                email.GetComponent<InputField>().Select();
            }
            if (email.GetComponent<InputField>().isFocused){
                password.GetComponent<InputField>().Select();
            }
            if (password.GetComponent<InputField>().isFocused){
                confPassword.GetComponent<InputField>().Select();
            }
        }
        if (Input.GetKeyDown(KeyCode.Return)){
            if (Password != ""&&Email != ""&&Password != ""&&ConfPassword != ""){
                RegisterButton();
            }
        }
        Username = username.GetComponent<InputField>().text;
        Email = email.GetComponent<InputField>().text;
        Password = password.GetComponent<InputField>().text;
        ConfPassword = confPassword.GetComponent<InputField>().text;
    }

    void EmailValidation(){
        bool SW = false;
        bool EW = false;
        for(int i = 0;i<Characters.Length;i++){
            if (Email.StartsWith(Characters[i])){
                SW = true;
            }
        }
        for(int i = 0;i<Characters.Length;i++){
            if (Email.EndsWith(Characters[i])){
                EW = true;
            }
        }
        if(SW == true&&EW == true){
            EmailValid = true;
        } else {
            EmailValid = false;
        }

    }
}