"""
Django settings for ipv6work project.

Generated by 'django-admin startproject' using Django 2.1.2.

For more information on this file, see
https://docs.djangoproject.com/en/2.1/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/2.1/ref/settings/
"""

import os
import ldap
import logging
from decouple import config, Csv
from django_auth_ldap.config import LDAPSearch, LDAPSearchUnion

logger = logging.getLogger(__name__)

# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/2.1/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = '+0t^onasc-b+_ry$!6@hpf4o79rw6m%q7dow5#ia+@nla&2@0-'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = config('DEBUG', cast=bool, default=False)

ALLOWED_HOSTS = config('ALLOWED_HOSTS', cast=Csv(), default="*")
CSRF_TRUSTED_ORIGINS = ['.ungleich.ch']

# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
]

# Libraries and other apps
INSTALLED_APPS += [
    'crispy_forms',

    # Used for autocomplete and dynamic creation of tags.
    # Ff this widget is required for admin, place these
    # before 'django.contrib.admin' app
    'dal',
    'dal_select2',

    # for authorization, rules are autodiscovered from rules.py in apps
    'rules.apps.AutodiscoverRulesConfig',
]

# Our apps
INSTALLED_APPS += [
    'jobs',
    'users',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware'
]

IPV6_EXEMPT_URLS = [r'^$']
DISABLE_IPV4_BLOCK = config('DISABLE_IPV4_BLOCK', cast=bool, default=False)


ROOT_URLCONF = 'ipv6work.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': ['templates/'],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

WSGI_APPLICATION = 'ipv6work.wsgi.application'


# Database
# https://docs.djangoproject.com/en/2.1/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': config('DATABASE_BACKEND', default='django.db.backends.sqlite3'),
        'NAME': config('DATABASE_NAME', default=os.path.join(BASE_DIR, 'db.sqlite3')),
    }
}


# Password validation
# https://docs.djangoproject.com/en/2.1/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]

AUTHENTICATION_BACKENDS = (
    'rules.permissions.ObjectPermissionBackend',
    'django_auth_ldap.backend.LDAPBackend',
)

USE_X_FORWARDED_HOST = True
FORCE_SCRIPT_NAME = config('FORCE_SCRIPT_NAME', '/ipv6/work/')

LOGIN_URL = 'login'
LOGOUT_URL = 'logout'
ROOT_URLCONF = 'ipv6work.urls'


LOGIN_REDIRECT_URL = FORCE_SCRIPT_NAME
LOGOUT_REDIRECT_URL = FORCE_SCRIPT_NAME

# This is necessary because when accessing from dynamicweb.ungleich.ch, 
# the browser tries to access 'favicon.ico' which resets the session as
# another Django app (dynamicweb) is running on /.
SESSION_COOKIE_NAME = 'session-ipv6-work'

# Internationalization
# https://docs.djangoproject.com/en/2.1/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/2.1/howto/static-files/


STATIC_URL = FORCE_SCRIPT_NAME + 'static/'

STATIC_ROOT = os.path.join(BASE_DIR, 'static/')

MEDIA_ROOT = os.path.join(BASE_DIR, 'media/')
MEDIA_URL = FORCE_SCRIPT_NAME + 'media/'

CRISPY_TEMPLATE_PACK = 'bootstrap4'


AUTH_LDAP_SERVER_URI = config('AUTH_LDAP_SERVER_URI')
AUTH_LDAP_BIND_DN = config('AUTH_LDAP_BIND_DN')
AUTH_LDAP_BIND_PASSWORD = config('AUTH_LDAP_BIND_PASSWORD')
AUTH_LDAP_USER_SEARCH = LDAPSearchUnion(
    LDAPSearch("ou=users,dc=ungleich,dc=ch",
               ldap.SCOPE_SUBTREE, "(uid=%(user)s)"),
    LDAPSearch("ou=customers,dc=ungleich,dc=ch",
               ldap.SCOPE_SUBTREE, "(uid=%(user)s)"),
)

AUTH_LDAP_USER_ATTR_MAP = {
    'first_name': 'givenName',
    'last_name': 'sn',
    'email': 'mail',
}
AUTH_LDAP_ALWAYS_UPDATE_USER = True
LOGGING = {
    'disable_existing_loggers': False,
    'version': 1,
    'handlers': {
        'console': {
            'class': 'logging.StreamHandler',
        },
    },
    'loggers': {
        'django_auth_ldap': {
            'level': 'DEBUG',
            'handlers': ['console'],
        },
    },
}

LDAP_SEARCH_BASE=config(
    'LDAP_SEARCH_BASE',
    default='ou=users,dc=ungleich,dc=ch'
)

LDAP_MAX_UID_PATH = os.path.join(
    os.path.abspath(os.path.dirname(__file__)),
    'ldap_max_uid_file'
)

LDAP_IPV6_WORK_USER_GROUP = config('LDAP_IPV6_WORK_USER_GROUP', cast=int)

LDAP_DEFAULT_START_UID = config(
    'LDAP_DEFAULT_START_UID', cast=int, default=10000
)

if config('ENABLE_DEBUG_LOG', cast=bool, default=False):
    loggers_dict = {}
    LOGGING['handlers']['file'] = {
        'level': 'DEBUG',
        'class': 'logging.FileHandler',
        'filename': os.path.join(BASE_DIR, 'debug.log'),
    }

    MODULES_TO_LOG = config('MODULES_TO_LOG', 'django')
    LOGGING['handlers']['file'] = {
        'level': 'DEBUG',
        'class': 'logging.FileHandler',
        'filename': os.path.join(BASE_DIR, 'debug.log'),
    }

    if MODULES_TO_LOG is None:
        # set MODULES_TO_LOG to django, if it is not set
        MODULES_TO_LOG = 'django'
    modules_to_log_list = MODULES_TO_LOG.split(',')
    for custom_module in modules_to_log_list:
        logger_item = {
            custom_module: {
                'handlers': ['file'],
                'level': 'DEBUG',
                'propagate': True
            }
        }
        loggers_dict.update(logger_item)

    LOGGING['loggers'] = loggers_dict

    if 'ldap3' in modules_to_log_list:
        from ldap3.utils.log import (
            set_library_log_detail_level, OFF, BASIC, NETWORK, EXTENDED
        )
        set_library_log_detail_level(BASIC)