Aauthentication with register_page

Dash Python
1

Hello
I can’t figure out how to do the same :

@callback(
    Output('page-content', 'children'),
    Input('url', 'pathname'),
    prevent_initial_call=True,
)
def display_page(pathname):
    if not flask.session.get('authenticated'):
        return login-layout
    elif pathname == '/dashboard':
        return dash-layout
    else:
        return "404 Page Error! Please choose a valid URL"

I need to redirect to the authentication page there is a user who has not logged in.
My code:
app.py

from dash import html, register_page, Input, Output, State , no_update, callback, dcc, Dash, page_container
import os
import flask
from dotenv import load_dotenv, find_dotenv
assets_folder = os.path.join(os.getcwd(), 'assets')
app = Dash(__name__, use_pages=True, update_title=None, suppress_callback_exceptions=True, assets_folder=assets_folder)
app.layout = html.Div(
    id='main-layout',
    children=[
        page_container
    ]
)
if __name__ == '__main__':
    app.run(debug=True)

./pages/auth.py:

from dash import html, register_page, Input, Output, State , no_update, callback
import flask
import dash_mantine_components as dmc
from src.db.h_main import check_password


register_page(__name__, path='/auth')


layout = (
    html.Div(children=[
        html.Div('', className="bg"),
        html.Div('', className="bg bg2"),
        html.Div('', className="bg bg3"),
        html.Div(
            className="contentBG",
            children=[
                dmc.LoadingOverlay(
                    dmc.Center(
                        children=[
                            dmc.Card(
                                children=[
                                    dmc.CardSection(
                                        children=[
                                            dmc.Text('Вход в дашборд', size='lg'),
                                            dmc.Divider(
                                                variant='dashed',
                                                labelPosition='center',
                                                mb='1.25rem'
                                            ),
                                            dmc.Stack(
                                                children=[
                                                    dmc.TextInput(label="Login:", id='log'),
                                                    dmc.PasswordInput(label="Password:", required=True, error=False, id='pass')
                                                ],
                                                spacing='1rem',
                                                id="loading-form",
                                            ),
                                            dmc.Group(
                                                [
                                                    # dcc.Link(dmc.Text("Don't have an account? Register", color="gray", size='sm'), href='/'),
                                                    dmc.Button(
                                                        "Login", id="load-button", variant="outline", fullWidth=True
                                                    ),
                                                ],
                                                grow=True,
                                                mt='1.5rem',
                                                noWrap=True,
                                                spacing='apart'
                                            )
                                        ],
                                        inheritPadding=True
                                    )
                                ],
                                withBorder=True,
                                shadow='xl',
                                radius='lg',
                                p='1.5rem',
                                style={'width': '420px'}
                            )
                        ]
                    ),
                    radius='16px',
                )
            ],
        )
    ])
)

How do I make sure that the authentication tab always opens for the user if he is not logged in using register_page and page_container

Thank you for reading and taking your time

3 
@callback(
    Output('_pages_location','href'),
    Input('main-layout', 'children'),
    State('_pages_location','pathname'),
)
def func(_, pathname):
    if not flask.session.get('authenticated'):
        return '/authenticated'
    elif flask.session.get('authenticated') and pathname == '/authenticated':
        return '/'
    else:
        return no_update