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;            //Pitää sisällään aikaisemmat muuttujat
    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", "ä", "ö", "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", "Ä", "Ö", "1", "2", "3", "4", "5", "6", "7", "8", "9", "0", "_", "-"};

    // Use this for initialization
    void Start()
    {

    }

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


        if (Username != "")
        {
            if (!System.IO.File.Exists(@"J:\Unity hommia ja projekteista poistettuja paskoja\Login_Harj_4.1_4.2\Assets\LoginDatabase\" + Username + ".txt")) //LoginDatabase kansio löytyy harjoituksen asseteista. Pitää tällä hetkellä manuaalisesti vaihtaa että homma toimii
            {
                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 > 7)
            {
                PW = true;
            }
            else
            {
                Debug.LogWarning("Password Must Be atleast 8 Characters long");
            }
        }
        else
        {
            Debug.LogWarning("Password Field Empty");
        }
        if (ConfPassword != "")
        {
            if (ConfPassword == Password)
            {
                CPW = true;
            } else
            {
                Debug.LogWarning("Passwords Don't Match");
            }
        }
        else
        {
            Debug.LogWarning("Confirm Password Field Empty");
        }
        if (UN == true&&EM == true&&PW == true&&CPW == true)   //Passwordin salaus
        {
            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(@"J:\Unity hommia ja projekteista poistettuja paskoja\Login_Harj_4.1_4.2\Assets\LoginDatabase\" + Username + ".txt", form);  //LoginDatabase kansio löytyy harjoituksen asseteista. Pitää tällä hetkellä manuaalisesti vaihtaa että homma toimii
            username.GetComponent<InputField>().text = "";
            email.GetComponent<InputField>().text = "";
            password.GetComponent<InputField>().text = "";
            confPassword.GetComponent<InputField>().text = "";
            print("Registration Complete");

        }
    }

    // Update is called once per frame
    void Update()
    {
        if (Input.GetKeyDown(KeyCode.Tab))
        {
            if (username.GetComponent<InputField>().isFocused) //Tabilla voi hyppiä paikasta toiseen
            {
                email.GetComponent<InputField>().Select();
            }
            if (email.GetComponent<InputField>().isFocused)
            {
                password.GetComponent<InputField>().Select();
            }
            if (password.GetComponent<InputField>().isFocused)
            {
                confPassword.GetComponent<InputField>().Select();
            }
        }
        //Entteriä painamalla rekisteröityy
        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;
        }
    }
}