from tkinter import *
from ctypes  import *
import os
import ctypes  # An included library with Python install.

screen_with = windll.user32.GetSystemMetrics(0)/2
screen_height = windll.user32.GetSystemMetrics(1)/2



creds = 'data.txt'

def Signup():
    global pwordE
    global nameE
    global roots
    global conformE
 	#Создание окна
    roots = Tk()
    roots.geometry("+500+350")
    roots.title('Signup')#Заголовок
    intruction = Label(roots, text='Registration\n')
    intruction.grid(row=0, column=0, sticky=W)

    nameL = Label(roots, text='New Username: ')
    pwordL = Label(roots, text='New Password: ')
    conformL = Label(roots, text = 'Conform Password')
    nameL.grid(row=1, column=0, sticky=W)
    pwordL.grid(row=2, column=0, sticky=W)
    conformL.grid(row = 3, column = 0, sticky = W)


    nameE = Entry(roots)
    nameE.insert(END, 'name')#default string
    pwordE = Entry(roots, show='*')
    conformE = Entry(roots, show = '&')
    nameE.grid(row=1, column=1)
    pwordE.grid(row=2, column=1)
    conformE.grid(row = 3, column = 1)

    signupButton = Button(roots, text='Signup', command=FSSignup)
    signupButton.grid(columnspan=2, sticky = N)
    logBtn = Button(roots, text='Login', fg='red', command=Login)
    logBtn.grid(columnspan=2, sticky=N)
    roots.mainloop()

def FSSignup():
    with open(creds, 'a') as f:
        name = nameE.get()
        pwd = pwordE.get()
        conform = conformE.get()
        if pwd != conform :
        	ctypes.windll.user32.MessageBoxW(0, "Password and conformpass do not equal! ", "Error!", 0)
        	conformE.delete(0, 'end')
        	pwordE.delete(0, 'end')
        	nameE.delete(0, 'end')

        if pwd == conform :
        	f.write(nameE.get() + '\n' + pwordE.get())


	        f.write('\n')
	        f.close()
	        roots.destroy()
	        Login()

def Login():

    if(roots):
        roots.destroy()
    global nameEL
    global pwordEL
    global rootA

    rootA = Tk()
    rootA.geometry("+500+350")
    rootA.title('Login')

    intruction = Label(rootA, text='Please Login\n')
    intruction.grid(sticky=E)

    nameL = Label(rootA, text='Username: ')
    pwordL = Label(rootA, text='Password: ')
    nameL.grid(row=1, sticky=W)
    pwordL.grid(row=2, sticky=W)

    nameEL = Entry(rootA)
    pwordEL = Entry(rootA, show='*')
    nameEL.grid(row=1, column=1)
    pwordEL.grid(row=2, column=1)

    loginB = Button(rootA, text='Login', command=CheckLogin)
    loginB.grid(columnspan=2, sticky=E)

    rmuser = Button(rootA, text='Delete User', fg='red', command=DelUser)
    rmuser.grid(columnspan=2, sticky=E)

    reguser = Button(rootA, text='Reg User', fg='red', command=regUser)
    reguser.grid(columnspan=2, sticky=E)
    rootA.mainloop()


def regUser():
    rootA.destroy()
    Signup()

def CheckLogin():
    with open(creds) as f:
        data = f.readlines()

    iterator = 0
    flag = False
    while (iterator <= (len(data) -1)):
        uname = data[iterator].rstrip()
        pword = data[iterator+1].rstrip()
        if nameEL.get() == uname and pwordEL.get() == pword:
            r = Tk()
            r.title(':D')
            r.geometry('250x100')
            rootA.destroy()
            rlbl = Label(r, text='\n[+] Logged In')
            rlbl.pack()
            back = Button(r, text='Back', fg='red', command=Login)
            back.pack()
            flag = True
            break;
            r.mainloop()

        iterator+=1

    if(flag == False):
            r = Tk()
            r.title('D:')
            r.geometry('150x50')
            rlbl = Label(r, text='\n[!] Invalid Login')
            rlbl.pack()

            r.mainloop()






def DelUser():
    os.remove(creds)
    rootA.destroy()
    Signup()


Signup()