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"""Authorisation utilities."""
from functools import wraps
from flask import flash, redirect
from uploader import session
def require_login(function):
"""Check that the user is logged in before executing `func`."""
@wraps(function)
def __is_session_valid__(*args, **kwargs):
"""Check that the user is logged in and their token is valid."""
def __clear_session__(_no_token):
session.clear_session_info()
flash("You need to be logged in.", "alert-danger")
return redirect("/")
return session.user_token().either(
__clear_session__,
lambda token: function(*args, **kwargs))
return __is_session_valid__
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