# Copyright (C) 2017  Lars Wirzenius
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.


import qvisqve


class API:

    def __init__(self, config):
        self._config = config
        self._rs = None
        self._routes = None
        self._attempts = qvisqve.AuthorizationAttempts()

    def find_missing_route(self, path):
        qvisqve.log.log('info', msg_text='find_missing_route', path=path)

        if self._routes is None:
            storedir = self._config['store']
            baseurl = self._config['token-issuer']

            tg = self._create_token_generator()
            clients = self._get_clients()
            users = self._get_users()
            applications = self._get_applications()

            version = qvisqve.VersionRouter()
            mgmt = qvisqve.ManagementRouter(storedir, baseurl)
            token = qvisqve.TokenRouter(tg, clients, users, self._attempts)
            auth = qvisqve.AuthRouter(applications, users, self._attempts)

            routers = [version, mgmt, token, auth]
            self._routes = []
            for router in routers:
                qvisqve.log.log(
                    'trace', msg_text='adding routes', router=router)
                self._routes.extend(router.get_routes())

            qvisqve.log.log(
                'debug', msg_text='missing routes created',
                routes=self._routes)

        return self._routes

    def _create_token_generator(self):
        tg = qvisqve.TokenGenerator()
        cfg = self._config
        tg.set_issuer(cfg['token-issuer'])
        tg.set_lifetime(cfg['token-lifetime'])
        tg.set_signing_key(cfg['token-private-key'])
        return tg

    def _create_resource_store(self):
        if self._rs is None:
            self._rs = qvisqve.FileStore(self._config['store'])
        return self._rs

    def _get_clients(self):
        rs = self._create_resource_store()
        cm = qvisqve.ClientManager(rs)
        return cm

    def _get_applications(self):
        rs = self._create_resource_store()
        am = qvisqve.ApplicationManager(rs)
        return am

    def _get_users(self):
        rs = self._create_resource_store()
        um = qvisqve.UserManager(rs)
        return um