firebase login and signup help in kivy Python code - firebase-authentication

Question

i have it so when entering the info into the signup input boxes and hitting the submit button.. it saves into the realtimedb in firebase auth.. the problem comes when i want to authenticate a user and then if the user isn't in the db i need to display a message
basically my code is...
loginsignup.py
from kivy.core.text import LabelBase
from kivy.core.window import Window
from kivy.lang import Builder
from kivy.uix.screenmanager import Screen,ScreenManager
from kivymd.app import MDApp
firebase = pyrebase.initialize_app(config)
auth = firebase.auth()
class MyFirebaseSignup:
def sign_up(self, username, email, password, login_message=None):
try:
user = auth.create_user_with_email_and_password(email, password)
data = {"email": email, "password": password, "idToken": True}
info = auth.get_account_info(user["idToken"])
auth.send_email_verification(user["idToken"])
password = data.get("password")
print("Successfully created account")
#Go to login.kv page
except:
print("Invalid")
#Display Error message from firebase id: signup_message (signup.kv)
pass
class MyFirebaseLogin():
def Login(self, email, password):
try:
login = auth.sign_in_with_email_and_password(email, password)
info = auth.get_account_info(login["idToken"])
print("The data of text field is : ",self.root.ids.data.login)
print("Successfully Logged in")
#Go to profile.kv page
except:
print("Invalid")
#Display Error message from firebase id: login_message (login.kv)
pass
.....
def build(self):
screen_manager = ScreenManager()
screen_manager.add_widget(Builder.load_file("main.kv"))
screen_manager.add_widget(Builder.load_file("signup.kv"))
screen_manager.add_widget(Builder.load_file("login.kv"))
screen_manager.add_widget(Builder.load_file("forgotpassword.kv"))
screen_manager.add_widget(Builder.load_file("profile.kv"))
self.my_firebasesignup = MyFirebaseSignup()
self.my_firebaselogin = MyFirebaseLogin()
#self.firebaseForgotPassword = MyFirebaseForgotPassword()
return screen_manager
if __name__ == "__main__":
LoginSignup().run()
signup.kv
<SignupScreen>:
MDScreen:
name: "signup"
id: signup
MDFloatLayout:
text: "Create a new account"
MDLabel:
id: signup_message
color: (1,0,0,1)
MDFloatLayout:
TextInput:
id: login_username
hint_text: "Username"
multiline: False
MDFloatLayout:
TextInput:
id: login_email
hint_text: "Email"
multiline: False
MDFloatLayout:
TextInput:
id: login_password
hint_text: "Password"
multiline: False
password: True
Button:
text: "SIGNUP"
on_release:
print("Sign up", login_email.text, login_password.text)
app.my_firebasesignup.sign_up(login_username.text,login_email.text,login_password.text)
MDLabel:
text: "Already have an account?"
MDTextButton:
text: "Sign in"
on_release:
root.manager.transition.direction = "left"
root.manager.current = "login"
login.kv
<LoginScreen>:
MDScreen:
name: "login"
id: login
MDFloatLayout:
MDLabel:
text: "Sign in to continue"
MDLabel:
id: login_message
color: (1,0,0,1)
TextInput:
id: login_email
hint_text: "Email"
multiline: False
MDFloatLayout:
TextInput:
id: login_password
hint_text: "Password"
multiline: False
password: True
Button:
text: "LOGIN"
on_release:
print("Sign in", login_email.text, login_password.text)
app.my_firebaselogin.Login(login_email.text,login_password.text)
MDTextButton:
text: "Forgot Password?"
on_release:
root.manager.transition.direction = "left"
#root.manager.current = "forgotpassword"
MDLabel:
text: "Don't have an account?"
MDTextButton:
text: "Sign up"
on_release:
root.manager.transition.direction = "left"
root.manager.current = "signup"
i cant find in any of the tutorials online how to display the errors using a label or if successful to move forward to a new page
Basically how do i:
Once signed up successfully, then go to login.kv page ... if my other buttons on other screens to go on release, root.manager.current = "login"
If there is an error in the Signup details, display those details in the signup_message on the signup.kv page?
I took out the formatting, etc... and im sure it is so simple.. but i cant figure it out
once i know how to do it once... il be able to do it on the others, etc