# This file is part of Radicale Server - Calendar Server
# Copyright © 2008-2016 Guillaume Ayoub
# Copyright © 2008 Nicolas Kandel
# Copyright © 2008 Pascal Halter
#
# 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 configuration module.

Give a configparser-like interface to read and write configuration.

"""

import os
from collections import OrderedDict
from configparser import RawConfigParser as ConfigParser

# Default configuration
INITIAL_CONFIG = OrderedDict([
    ("server", OrderedDict([
        ("hosts", "0.0.0.0:5232"),
        ("daemon", "False"),
        ("pid", ""),
        ("max_connections", "20"),
        ("max_content_length", "10000000"),
        ("timeout", "10"),
        ("ssl", "False"),
        ("certificate", "/etc/apache2/ssl/server.crt"),
        ("key", "/etc/apache2/ssl/server.key"),
        ("protocol", "PROTOCOL_SSLv23"),
        ("ciphers", ""),
        ("dns_lookup", "True"),
        ("base_prefix", "/"),
        ("can_skip_base_prefix", "False"),
        ("realm", "Radicale - Password Required")])),
    ("encoding", OrderedDict([
        ("request", "utf-8"),
        ("stock", "utf-8")])),
    ("auth", OrderedDict([
        ("type", "None"),
        ("htpasswd_filename", "/etc/radicale/users"),
        ("htpasswd_encryption", "crypt")])),
    ("rights", OrderedDict([
        ("type", "None"),
        ("file", "~/.config/radicale/rights")])),
    ("storage", OrderedDict([
        ("type", "multifilesystem"),
        ("filesystem_folder", os.path.expanduser(
            "~/.config/radicale/collections")),
        ("fsync", "True"),
        ("hook", ""),
        ("close_lock_file", "False")])),
    ("logging", OrderedDict([
        ("config", "/etc/radicale/logging"),
        ("debug", "False"),
        ("full_environment", "False"),
        ("mask_passwords", "True")]))])


def load(paths=(), extra_config=None):
    config = ConfigParser()
    for section, values in INITIAL_CONFIG.items():
        config.add_section(section)
        for key, value in values.items():
            config.set(section, key, value)
    if extra_config:
        for section, values in extra_config.items():
            for key, value in values.items():
                config.set(section, key, value)
    for path in paths:
        if path:
            config.read(path)
    return config