# Written by retoor@molodetz.nl


# This code provides a view for logging out users. It handles GET and POST requests, deletes session information, and redirects the user after logging out.


# This code imports 'web' from the 'aiohttp' library to handle HTTP operations and imports 'BaseView' from 'snek.system.view' to extend a base class for creating views.


# MIT License
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.


from aiohttp import web
from snek.system.view import BaseView


class LogoutView(BaseView):
    redirect_url = "/"
    login_required = True

    async def get(self):
        try:
            del self.session["logged_in"]
            del self.session["uid"]
            del self.session["username"]
        except KeyError:
            pass
        return web.HTTPFound(self.redirect_url)

    async def post(self):
        try:
            del self.session["logged_in"]
            del self.session["uid"]
            del self.session["username"]
        except KeyError:
            pass
        return await self.json_response({"redirect_url": self.redirect_url})