"""
Django settings for dal project.

Generated by 'django-admin startproject' using Django 1.10.7.

For more information on this file, see
https://docs.djangoproject.com/en/1.10/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/1.10/ref/settings/
"""

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

# LDAP setup
LDAP_SERVER = config('LDAP_SERVER')
AUTH_LDAP_SERVER_URI = config('LDAPSERVER')

LDAP_ADMIN_DN = config('LDAP_ADMIN_DN')
LDAP_ADMIN_PASSWORD = config('LDAP_ADMIN_PASSWORD')
AUTH_LDAP_BIND_DN = LDAP_ADMIN_DN
AUTH_LDAP_BIND_PASSWORD = LDAP_ADMIN_PASSWORD

LDAP_CUSTOMER_DN = config('LDAP_CUSTOMER_DN')
LDAP_USERS_DN = config('LDAP_USERS_DN')

# Search union over OUs
search_base = config('LDAPSEARCH').split()
search_base_ldap = [ LDAPSearch(x, ldap.SCOPE_SUBTREE, "(uid=%(user)s)") for x in search_base ]
AUTH_LDAP_USER_SEARCH = LDAPSearchUnion(*search_base_ldap)

AUTH_LDAP_START_TLS = config('LDAP_USE_TLS', default=False, cast=bool)

BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

DEBUG = config('DEBUG', default=False, cast=bool)

ALLOWED_HOSTS = config('ALLOWED_HOSTS', cast=Csv())

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'bootstrap3',
    'dal',
]

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',
]

AUTHENTICATION_BACKENDS = (
    'django_auth_ldap.backend.LDAPBackend',
)


ROOT_URLCONF = 'dal.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        '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 = 'dal.wsgi.application'

# Password validation
# https://docs.djangoproject.com/en/1.10/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',
    },
]


# Internationalization
# https://docs.djangoproject.com/en/1.10/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/1.10/howto/static-files/

STATIC_URL = '/static/'

############################# To be fixed

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

# Database
# https://docs.djangoproject.com/en/1.10/ref/settings/#databases

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

AUTH_LDAP_USER_ATTR_MAP = {
    "first_name": "givenName",
    "last_name": "sn",
    "email": "mail"
}

LOGGING = {
    'disable_existing_loggers': False,
    'version': 1,
    'formatters': {
        'standard': {
            'format': '%(asctime)s %(levelname)s %(name)s: %(message)s'
        }
    },
    'handlers': {
        'default': {
            'level': 'DEBUG',
            'class': 'logging.handlers.RotatingFileHandler',
            'filename': 'logs/debug.log',
            'maxBytes': 1024*1024*5,
            'backupCount': 10,
            'formatter': 'standard',
        },
        'console': {
            'class': 'logging.StreamHandler',
        },
    },
}

if config('ENABLE_DEBUG_LOG', default=False, cast=bool):
    loggers_dict = {}
    modules_to_log_list = config(
        'MODULES_TO_LOG', default='django', cast=Csv()
    )
    for custom_module in modules_to_log_list:
        logger_item = {
            custom_module: {
                'handlers': ['default'],
                'level': 'INFO',
                '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)