import PySimpleGUI as sg
import hashlib

"""
    Create a secure login for your scripts without having to include your password 
    in the program.  Create an SHA1 hash code for your password using the GUI. Paste into variable in final program
    1. Choose a password
    2. Generate a hash code for your chosen password by running program and entering 'gui' as the password
    3. Type password into the GUI
    4. Copy and paste hash code form GUI into variable named login_password_hash
    5. Run program again and test your login!
"""

# Use this GUI to get your password's hash code
def HashGeneratorGUI():
    layout = [[sg.T('Password Hash Generator', size=(30,1), font='Any 15')],
              [sg.T('Password'), sg.In(key='password')],
              [sg.T('SHA Hash'), sg.In('', size=(40,1), key='hash')],
              ]

    form = sg.FlexForm('SHA Generator', auto_size_text=False, default_element_size=(10,1),
                       text_justification='r', return_keyboard_events=True)
    form.Layout(layout)

    while True:
        button, values = form.Read()
        if button is None:
              exit(69)

        password = values['password']
        try:
            password_utf = password.encode('utf-8')
            sha1hash = hashlib.sha1()
            sha1hash.update(password_utf)
            password_hash = sha1hash.hexdigest()
            form.FindElement('hash').Update(password_hash)
        except:
            pass

# ----------------------------- Paste this code into your program / script -----------------------------
# determine if a password matches the secret password by comparing SHA1 hash codes
def PasswordMatches(password, hash):
    password_utf = password.encode('utf-8')
    sha1hash = hashlib.sha1()
    sha1hash.update(password_utf)
    password_hash = sha1hash.hexdigest()
    if password_hash == hash:
        return True
    else:
        return False

login_password_hash = '5baa61e4c9b93f3f0682250b6cf8331b7ee68fd8'
password = sg.PopupGetText('Password', password_char='*')
if password == 'gui':                # Remove when pasting into your program
    HashGeneratorGUI()               # Remove when pasting into your program
    exit(69)                         # Remove when pasting into your program
if PasswordMatches(password, login_password_hash):
    print('Login SUCCESSFUL')
else:
    print('Login FAILED!!')