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

public class Register : MonoBehaviour {
    public GameObject username;
    public GameObject email;
    public GameObject password;
    public GameObject confPassword;
    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");
            }
        } else {
            Debug.LogWarning("Username field Empty");
        }
        if (Email != "") {
            EmailValidation ();
            if (EmailValid) {
                if (Email.Contains("@")){
                    if(Email.Contains(".")){
                        EM = true;
                    } else {
                        Debug.LogWarning("Email is Incorrect");
                    }
                } else {
                    Debug.LogWarning("Email is Incorrect");
                }
            } else {
                Debug.LogWarning("Email is Incorrect");
            }
        } else {
            Debug.LogWarning("Email Field Empty");
        }
        if ( Password != ""){
            if (Password.Length > 5){
                PW = true;
            } else {
                Debug.LogWarning("Password Must Be atleast 6 Characters long ");
            }
        } else {
            Debug.LogWarning("Password Field Empty");
        }
        if (ConfPassword != ""){
            if (ConfPassword == Password){
                CPW = true;
            } else {
                Debug.LogWarning("Password Don't Match");
            }
        } else {
            Debug.LogWarning(" Confirm Password Field Empty");
        }
        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 = "";
        }

    }
        // 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 x = 0; i<characters.Length;i++) {
                if (Email.EndsWith (characters [i])) {
                    EW = true;
                }
            }
            if (SW == true && EW == true) {
                EmailValid = true;
            } else {
                EmailValid = false;

            }

        }
    }
}