# Copyright (C) 2018-2021 by BDE ENS Paris-Saclay
# SPDX-License-Identifier: GPL-3.0-or-later

from oauth2_provider.scopes import BaseScopes
from member.models import Club
from note_kfet.middlewares import get_current_request

from .backends import PermissionBackend
from .models import Permission


class PermissionScopes(BaseScopes):
    """
    An OAuth2 scope is defined by a permission object and a club.
    A token will have a subset of permissions from the owner of the application,
    and can be useful to make queries through the API with limited privileges.
    """

    def get_all_scopes(self):
        return {f"{p.id}_{club.id}": f"{p.description} (club {club.name})"
                for p in Permission.objects.all() for club in Club.objects.all()}

    def get_available_scopes(self, application=None, request=None, *args, **kwargs):
        if not application:
            return []
        return [f"{p.id}_{p.membership.club.id}"
                for t in Permission.PERMISSION_TYPES
                for p in PermissionBackend.get_raw_permissions(get_current_request(), t[0])]

    def get_default_scopes(self, application=None, request=None, *args, **kwargs):
        if not application:
            return []
        return [f"{p.id}_{p.membership.club.id}"
                for p in PermissionBackend.get_raw_permissions(get_current_request(), 'view')]