# -*- coding: utf-8 -*-
#
# This file is part of Radicale Server - Calendar Server
# Copyright © 2011-2012 Guillaume Ayoub
#
# This library is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This library 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Radicale.  If not, see <http://www.gnu.org/licenses/>.

"""
Radicale authorization module.

Manages who is authorized to access a collection.

The policy is that the owner may read and write in
all collections and some special rights are hardcoded.

"""

import os
import sys

from radicale import authorization, config, log
from radicale.authorization import owneronly



def read_authorized(user, collection):
    """Check if the user is allowed to read the collection"""
    log.LOGGER.debug("read_authorized '" + user + "' in '" + collection.owner + "/" + collection.name + "'");
    
    if owneronly.read_authorized(user, collection):
        return True
    
    if user == "user1" and collection.owner == "user2" and collection.name == "user2sharedwithuser1":
        return True
    if user == "user2" and collection.owner == "user1" and collection.name == "user1sharedwithuser2":
        return True
    
    return False


def write_authorized(user, collection):
    """Check if the user is allowed to write the collection"""
    log.LOGGER.debug("write_authorized '" + user + "' in '" + collection.owner + "/" + collection.name + "'");

    if owneronly.write_authorized(user, collection):
        return True
    
    if user == "user1" and collection.owner == "user2" and collection.name == "user2sharedwithuser1":
        return True
    if user == "user2" and collection.owner == "user1" and collection.name == "user1sharedwithuser2":
        return False

    return False