import hashlib
import importlib
import importlib.util
import os
import platform
import requests
import sys
import warnings
from urllib.parse import urlencode, urlsplit

import django
from django.contrib.messages import constants as messages
from django.core.exceptions import ImproperlyConfigured, ValidationError
from django.core.validators import URLValidator
from django.utils.encoding import force_str
from django.utils.translation import gettext_lazy as _
try:
    import sentry_sdk
except ModuleNotFoundError:
    pass

from netbox.config import PARAMS
from netbox.constants import RQ_QUEUE_DEFAULT, RQ_QUEUE_HIGH, RQ_QUEUE_LOW
from netbox.plugins import PluginConfig


#
# Environment setup
#

VERSION = '3.7.6'

# Hostname
HOSTNAME = platform.node()

# Set the base directory two levels up
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

# Validate Python version
if sys.version_info < (3, 8):
    raise RuntimeError(
        f"NetBox requires Python 3.8 or later. (Currently installed: Python {platform.python_version()})"
    )

#
# Configuration import
#

# Import configuration parameters
config_path = os.getenv('NETBOX_CONFIGURATION', 'netbox.configuration')
try:
    configuration = importlib.import_module(config_path)
except ModuleNotFoundError as e:
    if getattr(e, 'name') == config_path:
        raise ImproperlyConfigured(
            f"Specified configuration module ({config_path}) not found. Please define netbox/netbox/configuration.py "
            f"per the documentation, or specify an alternate module in the NETBOX_CONFIGURATION environment variable."
        )
    raise

# Enforce required configuration parameters
for parameter in ['ALLOWED_HOSTS', 'DATABASE', 'SECRET_KEY', 'REDIS']:
    if not hasattr(configuration, parameter):
        raise ImproperlyConfigured(f"Required parameter {parameter} is missing from configuration.")

# Set required parameters
ALLOWED_HOSTS = getattr(configuration, 'ALLOWED_HOSTS')
DATABASE = getattr(configuration, 'DATABASE')
REDIS = getattr(configuration, 'REDIS')
SECRET_KEY = getattr(configuration, 'SECRET_KEY')

# Enforce minimum length for SECRET_KEY
if type(SECRET_KEY) is not str:
    raise ImproperlyConfigured(f"SECRET_KEY must be a string (found {type(SECRET_KEY).__name__})")
if len(SECRET_KEY) < 50:
    raise ImproperlyConfigured(
        f"SECRET_KEY must be at least 50 characters in length. To generate a suitable key, run the following command:\n"
        f"  python {BASE_DIR}/generate_secret_key.py"
    )

# Calculate a unique deployment ID from the secret key
DEPLOYMENT_ID = hashlib.sha256(SECRET_KEY.encode('utf-8')).hexdigest()[:16]

# Set static config parameters
ADMINS = getattr(configuration, 'ADMINS', [])
ALLOW_TOKEN_RETRIEVAL = getattr(configuration, 'ALLOW_TOKEN_RETRIEVAL', True)
AUTH_PASSWORD_VALIDATORS = getattr(configuration, 'AUTH_PASSWORD_VALIDATORS', [])
BASE_PATH = getattr(configuration, 'BASE_PATH', '')
if BASE_PATH:
    BASE_PATH = BASE_PATH.strip('/') + '/'  # Enforce trailing slash only
CSRF_COOKIE_PATH = LANGUAGE_COOKIE_PATH = SESSION_COOKIE_PATH = f'/{BASE_PATH.rstrip("/")}'
CENSUS_REPORTING_ENABLED = getattr(configuration, 'CENSUS_REPORTING_ENABLED', True)
CORS_ORIGIN_ALLOW_ALL = getattr(configuration, 'CORS_ORIGIN_ALLOW_ALL', False)
CORS_ORIGIN_REGEX_WHITELIST = getattr(configuration, 'CORS_ORIGIN_REGEX_WHITELIST', [])
CORS_ORIGIN_WHITELIST = getattr(configuration, 'CORS_ORIGIN_WHITELIST', [])
CSRF_COOKIE_NAME = getattr(configuration, 'CSRF_COOKIE_NAME', 'csrftoken')
CSRF_COOKIE_SECURE = getattr(configuration, 'CSRF_COOKIE_SECURE', False)
CSRF_TRUSTED_ORIGINS = getattr(configuration, 'CSRF_TRUSTED_ORIGINS', [])
DATA_UPLOAD_MAX_MEMORY_SIZE = getattr(configuration, 'DATA_UPLOAD_MAX_MEMORY_SIZE', 2621440)
DATE_FORMAT = getattr(configuration, 'DATE_FORMAT', 'N j, Y')
DATETIME_FORMAT = getattr(configuration, 'DATETIME_FORMAT', 'N j, Y g:i a')
DEBUG = getattr(configuration, 'DEBUG', False)
DEFAULT_DASHBOARD = getattr(configuration, 'DEFAULT_DASHBOARD', None)
DEFAULT_PERMISSIONS = getattr(configuration, 'DEFAULT_PERMISSIONS', {
    # Permit users to manage their own bookmarks
    'extras.view_bookmark': ({'user': '$user'},),
    'extras.add_bookmark': ({'user': '$user'},),
    'extras.change_bookmark': ({'user': '$user'},),
    'extras.delete_bookmark': ({'user': '$user'},),
    # Permit users to manage their own API tokens
    'users.view_token': ({'user': '$user'},),
    'users.add_token': ({'user': '$user'},),
    'users.change_token': ({'user': '$user'},),
    'users.delete_token': ({'user': '$user'},),
})
DEVELOPER = getattr(configuration, 'DEVELOPER', False)
DOCS_ROOT = getattr(configuration, 'DOCS_ROOT', os.path.join(os.path.dirname(BASE_DIR), 'docs'))
EMAIL = getattr(configuration, 'EMAIL', {})
EVENTS_PIPELINE = getattr(configuration, 'EVENTS_PIPELINE', (
    'extras.events.process_event_queue',
))
EXEMPT_VIEW_PERMISSIONS = getattr(configuration, 'EXEMPT_VIEW_PERMISSIONS', [])
FIELD_CHOICES = getattr(configuration, 'FIELD_CHOICES', {})
FILE_UPLOAD_MAX_MEMORY_SIZE = getattr(configuration, 'FILE_UPLOAD_MAX_MEMORY_SIZE', 2621440)
HTTP_PROXIES = getattr(configuration, 'HTTP_PROXIES', None)
INTERNAL_IPS = getattr(configuration, 'INTERNAL_IPS', ('127.0.0.1', '::1'))
JINJA2_FILTERS = getattr(configuration, 'JINJA2_FILTERS', {})
LANGUAGE_CODE = getattr(configuration, 'DEFAULT_LANGUAGE', 'en-us')
LOGGING = getattr(configuration, 'LOGGING', {})
LOGIN_PERSISTENCE = getattr(configuration, 'LOGIN_PERSISTENCE', False)
LOGIN_REQUIRED = getattr(configuration, 'LOGIN_REQUIRED', False)
LOGIN_TIMEOUT = getattr(configuration, 'LOGIN_TIMEOUT', None)
LOGOUT_REDIRECT_URL = getattr(configuration, 'LOGOUT_REDIRECT_URL', 'home')
MEDIA_ROOT = getattr(configuration, 'MEDIA_ROOT', os.path.join(BASE_DIR, 'media')).rstrip('/')
METRICS_ENABLED = getattr(configuration, 'METRICS_ENABLED', False)
PLUGINS = getattr(configuration, 'PLUGINS', [])
PLUGINS_CONFIG = getattr(configuration, 'PLUGINS_CONFIG', {})
QUEUE_MAPPINGS = getattr(configuration, 'QUEUE_MAPPINGS', {})
RELEASE_CHECK_URL = getattr(configuration, 'RELEASE_CHECK_URL', None)
REMOTE_AUTH_AUTO_CREATE_USER = getattr(configuration, 'REMOTE_AUTH_AUTO_CREATE_USER', False)
REMOTE_AUTH_AUTO_CREATE_GROUPS = getattr(configuration, 'REMOTE_AUTH_AUTO_CREATE_GROUPS', False)
REMOTE_AUTH_BACKEND = getattr(configuration, 'REMOTE_AUTH_BACKEND', 'netbox.authentication.RemoteUserBackend')
REMOTE_AUTH_DEFAULT_GROUPS = getattr(configuration, 'REMOTE_AUTH_DEFAULT_GROUPS', [])
REMOTE_AUTH_DEFAULT_PERMISSIONS = getattr(configuration, 'REMOTE_AUTH_DEFAULT_PERMISSIONS', {})
REMOTE_AUTH_ENABLED = getattr(configuration, 'REMOTE_AUTH_ENABLED', False)
REMOTE_AUTH_HEADER = getattr(configuration, 'REMOTE_AUTH_HEADER', 'HTTP_REMOTE_USER')
REMOTE_AUTH_USER_FIRST_NAME = getattr(configuration, 'REMOTE_AUTH_USER_FIRST_NAME', 'HTTP_REMOTE_USER_FIRST_NAME')
REMOTE_AUTH_USER_LAST_NAME = getattr(configuration, 'REMOTE_AUTH_USER_LAST_NAME', 'HTTP_REMOTE_USER_LAST_NAME')
REMOTE_AUTH_USER_EMAIL = getattr(configuration, 'REMOTE_AUTH_USER_EMAIL', 'HTTP_REMOTE_USER_EMAIL')
REMOTE_AUTH_GROUP_HEADER = getattr(configuration, 'REMOTE_AUTH_GROUP_HEADER', 'HTTP_REMOTE_USER_GROUP')
REMOTE_AUTH_GROUP_SYNC_ENABLED = getattr(configuration, 'REMOTE_AUTH_GROUP_SYNC_ENABLED', False)
REMOTE_AUTH_SUPERUSER_GROUPS = getattr(configuration, 'REMOTE_AUTH_SUPERUSER_GROUPS', [])
REMOTE_AUTH_SUPERUSERS = getattr(configuration, 'REMOTE_AUTH_SUPERUSERS', [])
REMOTE_AUTH_STAFF_GROUPS = getattr(configuration, 'REMOTE_AUTH_STAFF_GROUPS', [])
REMOTE_AUTH_STAFF_USERS = getattr(configuration, 'REMOTE_AUTH_STAFF_USERS', [])
REMOTE_AUTH_GROUP_SEPARATOR = getattr(configuration, 'REMOTE_AUTH_GROUP_SEPARATOR', '|')
REPORTS_ROOT = getattr(configuration, 'REPORTS_ROOT', os.path.join(BASE_DIR, 'reports')).rstrip('/')
RQ_DEFAULT_TIMEOUT = getattr(configuration, 'RQ_DEFAULT_TIMEOUT', 300)
RQ_RETRY_INTERVAL = getattr(configuration, 'RQ_RETRY_INTERVAL', 60)
RQ_RETRY_MAX = getattr(configuration, 'RQ_RETRY_MAX', 0)
SCRIPTS_ROOT = getattr(configuration, 'SCRIPTS_ROOT', os.path.join(BASE_DIR, 'scripts')).rstrip('/')
SEARCH_BACKEND = getattr(configuration, 'SEARCH_BACKEND', 'netbox.search.backends.CachedValueSearchBackend')
SECURE_HSTS_INCLUDE_SUBDOMAINS = getattr(configuration, 'SECURE_HSTS_INCLUDE_SUBDOMAINS', False)
SECURE_HSTS_PRELOAD = getattr(configuration, 'SECURE_HSTS_PRELOAD', False)
SECURE_HSTS_SECONDS = getattr(configuration, 'SECURE_HSTS_SECONDS', 0)
SECURE_SSL_REDIRECT = getattr(configuration, 'SECURE_SSL_REDIRECT', False)
SENTRY_DSN = getattr(configuration, 'SENTRY_DSN', None)
SENTRY_ENABLED = getattr(configuration, 'SENTRY_ENABLED', False)
SENTRY_SAMPLE_RATE = getattr(configuration, 'SENTRY_SAMPLE_RATE', 1.0)
SENTRY_TRACES_SAMPLE_RATE = getattr(configuration, 'SENTRY_TRACES_SAMPLE_RATE', 0)
SENTRY_TAGS = getattr(configuration, 'SENTRY_TAGS', {})
SESSION_FILE_PATH = getattr(configuration, 'SESSION_FILE_PATH', None)
SESSION_COOKIE_NAME = getattr(configuration, 'SESSION_COOKIE_NAME', 'sessionid')
SESSION_COOKIE_SECURE = getattr(configuration, 'SESSION_COOKIE_SECURE', False)
SHORT_DATE_FORMAT = getattr(configuration, 'SHORT_DATE_FORMAT', 'Y-m-d')
SHORT_DATETIME_FORMAT = getattr(configuration, 'SHORT_DATETIME_FORMAT', 'Y-m-d H:i')
SHORT_TIME_FORMAT = getattr(configuration, 'SHORT_TIME_FORMAT', 'H:i:s')
STORAGE_BACKEND = getattr(configuration, 'STORAGE_BACKEND', None)
STORAGE_CONFIG = getattr(configuration, 'STORAGE_CONFIG', {})
TIME_FORMAT = getattr(configuration, 'TIME_FORMAT', 'g:i a')
TIME_ZONE = getattr(configuration, 'TIME_ZONE', 'UTC')
ENABLE_LOCALIZATION = getattr(configuration, 'ENABLE_LOCALIZATION', False)
CHANGELOG_SKIP_EMPTY_CHANGES = getattr(configuration, 'CHANGELOG_SKIP_EMPTY_CHANGES', True)

# Check for hard-coded dynamic config parameters
for param in PARAMS:
    if hasattr(configuration, param.name):
        globals()[param.name] = getattr(configuration, param.name)

# Validate update repo URL and timeout
if RELEASE_CHECK_URL:
    validator = URLValidator(
        message=(
            "RELEASE_CHECK_URL must be a valid API URL. Example: "
            "https://api.github.com/repos/netbox-community/netbox"
        )
    )
    try:
        validator(RELEASE_CHECK_URL)
    except ValidationError as err:
        raise ImproperlyConfigured(str(err))


#
# Database
#

if 'ENGINE' not in DATABASE:
    # Only PostgreSQL is supported
    if METRICS_ENABLED:
        DATABASE.update({
            'ENGINE': 'django_prometheus.db.backends.postgresql'
        })
    else:
        DATABASE.update({
            'ENGINE': 'django.db.backends.postgresql'
        })

DATABASES = {
    'default': DATABASE,
}


#
# Media storage
#

if STORAGE_BACKEND is not None:
    DEFAULT_FILE_STORAGE = STORAGE_BACKEND

    # django-storages
    if STORAGE_BACKEND.startswith('storages.'):

        try:
            import storages.utils  # type: ignore
        except ModuleNotFoundError as e:
            if getattr(e, 'name') == 'storages':
                raise ImproperlyConfigured(
                    f"STORAGE_BACKEND is set to {STORAGE_BACKEND} but django-storages is not present. It can be "
                    f"installed by running 'pip install django-storages'."
                )
            raise e

        # Monkey-patch django-storages to fetch settings from STORAGE_CONFIG
        def _setting(name, default=None):
            if name in STORAGE_CONFIG:
                return STORAGE_CONFIG[name]
            return globals().get(name, default)
        storages.utils.setting = _setting

if STORAGE_CONFIG and STORAGE_BACKEND is None:
    warnings.warn(
        "STORAGE_CONFIG has been set in configuration.py but STORAGE_BACKEND is not defined. STORAGE_CONFIG will be "
        "ignored."
    )


#
# Redis
#

# Background task queuing
if 'tasks' not in REDIS:
    raise ImproperlyConfigured(
        "REDIS section in configuration.py is missing the 'tasks' subsection."
    )
TASKS_REDIS = REDIS['tasks']
TASKS_REDIS_HOST = TASKS_REDIS.get('HOST', 'localhost')
TASKS_REDIS_PORT = TASKS_REDIS.get('PORT', 6379)
TASKS_REDIS_SENTINELS = TASKS_REDIS.get('SENTINELS', [])
TASKS_REDIS_USING_SENTINEL = all([
    isinstance(TASKS_REDIS_SENTINELS, (list, tuple)),
    len(TASKS_REDIS_SENTINELS) > 0
])
TASKS_REDIS_SENTINEL_SERVICE = TASKS_REDIS.get('SENTINEL_SERVICE', 'default')
TASKS_REDIS_SENTINEL_TIMEOUT = TASKS_REDIS.get('SENTINEL_TIMEOUT', 10)
TASKS_REDIS_USERNAME = TASKS_REDIS.get('USERNAME', '')
TASKS_REDIS_PASSWORD = TASKS_REDIS.get('PASSWORD', '')
TASKS_REDIS_DATABASE = TASKS_REDIS.get('DATABASE', 0)
TASKS_REDIS_SSL = TASKS_REDIS.get('SSL', False)
TASKS_REDIS_SKIP_TLS_VERIFY = TASKS_REDIS.get('INSECURE_SKIP_TLS_VERIFY', False)
TASKS_REDIS_CA_CERT_PATH = TASKS_REDIS.get('CA_CERT_PATH', False)

# Caching
if 'caching' not in REDIS:
    raise ImproperlyConfigured(
        "REDIS section in configuration.py is missing caching subsection."
    )
CACHING_REDIS_HOST = REDIS['caching'].get('HOST', 'localhost')
CACHING_REDIS_PORT = REDIS['caching'].get('PORT', 6379)
CACHING_REDIS_DATABASE = REDIS['caching'].get('DATABASE', 0)
CACHING_REDIS_USERNAME = REDIS['caching'].get('USERNAME', '')
CACHING_REDIS_USERNAME_HOST = '@'.join(filter(None, [CACHING_REDIS_USERNAME, CACHING_REDIS_HOST]))
CACHING_REDIS_PASSWORD = REDIS['caching'].get('PASSWORD', '')
CACHING_REDIS_SENTINELS = REDIS['caching'].get('SENTINELS', [])
CACHING_REDIS_SENTINEL_SERVICE = REDIS['caching'].get('SENTINEL_SERVICE', 'default')
CACHING_REDIS_PROTO = 'rediss' if REDIS['caching'].get('SSL', False) else 'redis'
CACHING_REDIS_SKIP_TLS_VERIFY = REDIS['caching'].get('INSECURE_SKIP_TLS_VERIFY', False)
CACHING_REDIS_CA_CERT_PATH = REDIS['caching'].get('CA_CERT_PATH', False)

CACHES = {
    'default': {
        'BACKEND': 'django_redis.cache.RedisCache',
        'LOCATION': f'{CACHING_REDIS_PROTO}://{CACHING_REDIS_USERNAME_HOST}:{CACHING_REDIS_PORT}/{CACHING_REDIS_DATABASE}',
        'OPTIONS': {
            'CLIENT_CLASS': 'django_redis.client.DefaultClient',
            'PASSWORD': CACHING_REDIS_PASSWORD,
        }
    }
}


if CACHING_REDIS_SENTINELS:
    DJANGO_REDIS_CONNECTION_FACTORY = 'django_redis.pool.SentinelConnectionFactory'
    CACHES['default']['LOCATION'] = f'{CACHING_REDIS_PROTO}://{CACHING_REDIS_SENTINEL_SERVICE}/{CACHING_REDIS_DATABASE}'
    CACHES['default']['OPTIONS']['CLIENT_CLASS'] = 'django_redis.client.SentinelClient'
    CACHES['default']['OPTIONS']['SENTINELS'] = CACHING_REDIS_SENTINELS
if CACHING_REDIS_SKIP_TLS_VERIFY:
    CACHES['default']['OPTIONS'].setdefault('CONNECTION_POOL_KWARGS', {})
    CACHES['default']['OPTIONS']['CONNECTION_POOL_KWARGS']['ssl_cert_reqs'] = False
if CACHING_REDIS_CA_CERT_PATH:
    CACHES['default']['OPTIONS'].setdefault('CONNECTION_POOL_KWARGS', {})
    CACHES['default']['OPTIONS']['CONNECTION_POOL_KWARGS']['ssl_ca_certs'] = CACHING_REDIS_CA_CERT_PATH

#
# Sessions
#

if LOGIN_TIMEOUT is not None:
    # Django default is 1209600 seconds (14 days)
    SESSION_COOKIE_AGE = LOGIN_TIMEOUT
SESSION_SAVE_EVERY_REQUEST = bool(LOGIN_PERSISTENCE)
if SESSION_FILE_PATH is not None:
    SESSION_ENGINE = 'django.contrib.sessions.backends.file'


#
# Email
#

EMAIL_HOST = EMAIL.get('SERVER')
EMAIL_HOST_USER = EMAIL.get('USERNAME')
EMAIL_HOST_PASSWORD = EMAIL.get('PASSWORD')
EMAIL_PORT = EMAIL.get('PORT', 25)
EMAIL_SSL_CERTFILE = EMAIL.get('SSL_CERTFILE')
EMAIL_SSL_KEYFILE = EMAIL.get('SSL_KEYFILE')
EMAIL_SUBJECT_PREFIX = '[NetBox] '
EMAIL_USE_SSL = EMAIL.get('USE_SSL', False)
EMAIL_USE_TLS = EMAIL.get('USE_TLS', False)
EMAIL_TIMEOUT = EMAIL.get('TIMEOUT', 10)
SERVER_EMAIL = EMAIL.get('FROM_EMAIL')


#
# Django
#

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'django.contrib.humanize',
    'django.forms',
    'corsheaders',
    'debug_toolbar',
    'graphiql_debug_toolbar',
    'django_filters',
    'django_tables2',
    'django_prometheus',
    'graphene_django',
    'mptt',
    'rest_framework',
    'social_django',
    'taggit',
    'timezone_field',
    'core',
    'account',
    'circuits',
    'dcim',
    'ipam',
    'extras',
    'tenancy',
    'users',
    'utilities',
    'virtualization',
    'vpn',
    'wireless',
    'django_rq',  # Must come after extras to allow overriding management commands
    'drf_spectacular',
    'drf_spectacular_sidecar',
]

# Middleware
MIDDLEWARE = [
    'graphiql_debug_toolbar.middleware.DebugToolbarMiddleware',
    'django_prometheus.middleware.PrometheusBeforeMiddleware',
    'corsheaders.middleware.CorsMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.locale.LocaleMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
    'django.middleware.security.SecurityMiddleware',
    'netbox.middleware.RemoteUserMiddleware',
    'netbox.middleware.CoreMiddleware',
    'netbox.middleware.MaintenanceModeMiddleware',
    'django_prometheus.middleware.PrometheusAfterMiddleware',
]

if not ENABLE_LOCALIZATION:
    MIDDLEWARE.remove("django.middleware.locale.LocaleMiddleware")

ROOT_URLCONF = 'netbox.urls'

TEMPLATES_DIR = BASE_DIR + '/templates'
TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [TEMPLATES_DIR],
        'APP_DIRS': True,
        'OPTIONS': {
            'builtins': [
                'utilities.templatetags.builtins.filters',
                'utilities.templatetags.builtins.tags',
            ],
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.template.context_processors.media',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
                'netbox.context_processors.settings_and_registry',
            ],
        },
    },
]

# This allows us to override Django's stock form widget templates
FORM_RENDERER = 'django.forms.renderers.TemplatesSetting'

# Set up authentication backends
if type(REMOTE_AUTH_BACKEND) not in (list, tuple):
    REMOTE_AUTH_BACKEND = [REMOTE_AUTH_BACKEND]
AUTHENTICATION_BACKENDS = [
    *REMOTE_AUTH_BACKEND,
    'netbox.authentication.ObjectPermissionBackend',
]

# Time zones
USE_TZ = True

# WSGI
WSGI_APPLICATION = 'netbox.wsgi.application'
SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')
USE_X_FORWARDED_HOST = True
X_FRAME_OPTIONS = 'SAMEORIGIN'

# Static files (CSS, JavaScript, Images)
STATIC_ROOT = BASE_DIR + '/static'
STATIC_URL = f'/{BASE_PATH}static/'
STATICFILES_DIRS = (
    os.path.join(BASE_DIR, 'project-static', 'dist'),
    os.path.join(BASE_DIR, 'project-static', 'img'),
    os.path.join(BASE_DIR, 'project-static', 'js'),
    ('docs', os.path.join(BASE_DIR, 'project-static', 'docs')),  # Prefix with /docs
)

# Media
MEDIA_URL = '/{}media/'.format(BASE_PATH)

# Disable default limit of 1000 fields per request. Needed for bulk deletion of objects. (Added in Django 1.10.)
DATA_UPLOAD_MAX_NUMBER_FIELDS = None

# Messages
MESSAGE_TAGS = {
    messages.ERROR: 'danger',
}

# Authentication URLs
LOGIN_URL = f'/{BASE_PATH}login/'
LOGIN_REDIRECT_URL = f'/{BASE_PATH}'

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

# Exclude potentially sensitive models from wildcard view exemption. These may still be exempted
# by specifying the model individually in the EXEMPT_VIEW_PERMISSIONS configuration parameter.
EXEMPT_EXCLUDE_MODELS = (
    ('auth', 'group'),
    ('auth', 'user'),
    ('extras', 'configrevision'),
    ('users', 'objectpermission'),
    ('users', 'token'),
)

# All URLs starting with a string listed here are exempt from login enforcement
AUTH_EXEMPT_PATHS = (
    f'/{BASE_PATH}api/',
    f'/{BASE_PATH}graphql/',
    f'/{BASE_PATH}login/',
    f'/{BASE_PATH}oauth/',
    f'/{BASE_PATH}metrics',
)

# All URLs starting with a string listed here are exempt from maintenance mode enforcement
MAINTENANCE_EXEMPT_PATHS = (
    f'/{BASE_PATH}admin/',
    f'/{BASE_PATH}extras/config-revisions/',  # Allow modifying the configuration
    LOGIN_URL,
    LOGIN_REDIRECT_URL,
    LOGOUT_REDIRECT_URL
)

SERIALIZATION_MODULES = {
    'json': 'utilities.serializers.json',
}


#
# Sentry
#

if SENTRY_ENABLED:
    try:
        from sentry_sdk.integrations.django import DjangoIntegration
    except ModuleNotFoundError:
        raise ImproperlyConfigured("SENTRY_ENABLED is True but the sentry-sdk package is not installed.")
    if not SENTRY_DSN:
        raise ImproperlyConfigured("SENTRY_ENABLED is True but SENTRY_DSN has not been defined.")
    # Initialize the SDK
    sentry_sdk.init(
        dsn=SENTRY_DSN,
        release=VERSION,
        integrations=[DjangoIntegration()],
        sample_rate=SENTRY_SAMPLE_RATE,
        traces_sample_rate=SENTRY_TRACES_SAMPLE_RATE,
        send_default_pii=True,
        http_proxy=HTTP_PROXIES.get('http') if HTTP_PROXIES else None,
        https_proxy=HTTP_PROXIES.get('https') if HTTP_PROXIES else None
    )
    # Assign any configured tags
    for k, v in SENTRY_TAGS.items():
        sentry_sdk.set_tag(k, v)


#
# Census collection
#

CENSUS_URL = 'https://census.netbox.dev/api/v1/'
CENSUS_PARAMS = {
    'version': VERSION,
    'python_version': sys.version.split()[0],
    'deployment_id': DEPLOYMENT_ID,
}
if CENSUS_REPORTING_ENABLED and not DEBUG and 'test' not in sys.argv:
    try:
        # Report anonymous census data
        requests.get(f'{CENSUS_URL}?{urlencode(CENSUS_PARAMS)}', timeout=3, proxies=HTTP_PROXIES)
    except requests.exceptions.RequestException:
        pass


#
# Django social auth
#

SOCIAL_AUTH_PIPELINE = (
    'social_core.pipeline.social_auth.social_details',
    'social_core.pipeline.social_auth.social_uid',
    'social_core.pipeline.social_auth.social_user',
    'social_core.pipeline.user.get_username',
    'social_core.pipeline.user.create_user',
    'social_core.pipeline.social_auth.associate_user',
    'netbox.authentication.user_default_groups_handler',
    'social_core.pipeline.social_auth.load_extra_data',
    'social_core.pipeline.user.user_details',
)

# Load all SOCIAL_AUTH_* settings from the user configuration
for param in dir(configuration):
    if param.startswith('SOCIAL_AUTH_'):
        globals()[param] = getattr(configuration, param)

# Force usage of PostgreSQL's JSONB field for extra data
SOCIAL_AUTH_JSONFIELD_ENABLED = True
SOCIAL_AUTH_CLEAN_USERNAME_FUNCTION = 'users.utils.clean_username'

#
# Django Prometheus
#

PROMETHEUS_EXPORT_MIGRATIONS = False


#
# Django filters
#

FILTERS_NULL_CHOICE_LABEL = 'None'
FILTERS_NULL_CHOICE_VALUE = 'null'


#
# Django REST framework (API)
#

REST_FRAMEWORK_VERSION = '.'.join(VERSION.split('-')[0].split('.')[:2])  # Use major.minor as API version
REST_FRAMEWORK = {
    'ALLOWED_VERSIONS': [REST_FRAMEWORK_VERSION],
    'COERCE_DECIMAL_TO_STRING': False,
    'DEFAULT_AUTHENTICATION_CLASSES': (
        'rest_framework.authentication.SessionAuthentication',
        'netbox.api.authentication.TokenAuthentication',
    ),
    'DEFAULT_FILTER_BACKENDS': (
        'django_filters.rest_framework.DjangoFilterBackend',
        'rest_framework.filters.OrderingFilter',
    ),
    'DEFAULT_METADATA_CLASS': 'netbox.api.metadata.BulkOperationMetadata',
    'DEFAULT_PAGINATION_CLASS': 'netbox.api.pagination.OptionalLimitOffsetPagination',
    'DEFAULT_PARSER_CLASSES': (
        'rest_framework.parsers.JSONParser',
        'rest_framework.parsers.MultiPartParser',
    ),
    'DEFAULT_PERMISSION_CLASSES': (
        'netbox.api.authentication.TokenPermissions',
    ),
    'DEFAULT_RENDERER_CLASSES': (
        'rest_framework.renderers.JSONRenderer',
        'netbox.api.renderers.FormlessBrowsableAPIRenderer',
    ),
    'DEFAULT_SCHEMA_CLASS': 'core.api.schema.NetBoxAutoSchema',
    'DEFAULT_VERSION': REST_FRAMEWORK_VERSION,
    'DEFAULT_VERSIONING_CLASS': 'rest_framework.versioning.AcceptHeaderVersioning',
    'SCHEMA_COERCE_METHOD_NAMES': {
        # Default mappings
        'retrieve': 'read',
        'destroy': 'delete',
        # Custom operations
        'bulk_destroy': 'bulk_delete',
    },
    'VIEW_NAME_FUNCTION': 'utilities.api.get_view_name',
}

#
# DRF Spectacular
#

SPECTACULAR_SETTINGS = {
    'TITLE': 'NetBox REST API',
    'LICENSE': {'name': 'Apache v2 License'},
    'VERSION': VERSION,
    'COMPONENT_SPLIT_REQUEST': True,
    'REDOC_DIST': 'SIDECAR',
    'SERVERS': [{
        'url': BASE_PATH,
        'description': 'NetBox',
    }],
    'SWAGGER_UI_DIST': 'SIDECAR',
    'SWAGGER_UI_FAVICON_HREF': 'SIDECAR',
    'POSTPROCESSING_HOOKS': [],
}

#
# Graphene
#

GRAPHENE = {
    # Avoids naming collision on models with 'type' field; see
    # https://github.com/graphql-python/graphene-django/issues/185
    'DJANGO_CHOICE_FIELD_ENUM_V3_NAMING': True,
}


#
# Django RQ (events backend)
#

if TASKS_REDIS_USING_SENTINEL:
    RQ_PARAMS = {
        'SENTINELS': TASKS_REDIS_SENTINELS,
        'MASTER_NAME': TASKS_REDIS_SENTINEL_SERVICE,
        'SOCKET_TIMEOUT': None,
        'CONNECTION_KWARGS': {
            'socket_connect_timeout': TASKS_REDIS_SENTINEL_TIMEOUT
        },
    }
else:
    RQ_PARAMS = {
        'HOST': TASKS_REDIS_HOST,
        'PORT': TASKS_REDIS_PORT,
        'SSL': TASKS_REDIS_SSL,
        'SSL_CERT_REQS': None if TASKS_REDIS_SKIP_TLS_VERIFY else 'required',
    }
RQ_PARAMS.update({
    'DB': TASKS_REDIS_DATABASE,
    'USERNAME': TASKS_REDIS_USERNAME,
    'PASSWORD': TASKS_REDIS_PASSWORD,
    'DEFAULT_TIMEOUT': RQ_DEFAULT_TIMEOUT,
})

if TASKS_REDIS_CA_CERT_PATH:
    RQ_PARAMS.setdefault('REDIS_CLIENT_KWARGS', {})
    RQ_PARAMS['REDIS_CLIENT_KWARGS']['ssl_ca_certs'] = TASKS_REDIS_CA_CERT_PATH

RQ_QUEUES = {
    RQ_QUEUE_HIGH: RQ_PARAMS,
    RQ_QUEUE_DEFAULT: RQ_PARAMS,
    RQ_QUEUE_LOW: RQ_PARAMS,
}

# Add any queues defined in QUEUE_MAPPINGS
RQ_QUEUES.update({
    queue: RQ_PARAMS for queue in set(QUEUE_MAPPINGS.values()) if queue not in RQ_QUEUES
})

#
# Localization
#

LANGUAGES = (
    ('en', _('English')),
    ('es', _('Spanish')),
    ('fr', _('French')),
    ('ja', _('Japanese')),
    ('pt', _('Portuguese')),
    ('ru', _('Russian')),
    ('tr', _('Turkish')),
)

LOCALE_PATHS = (
    BASE_DIR + '/translations',
)

if not ENABLE_LOCALIZATION:
    USE_I18N = False
    USE_L10N = False

#
# Plugins
#

for plugin_name in PLUGINS:
    # Import plugin module
    try:
        plugin = importlib.import_module(plugin_name)
    except ModuleNotFoundError as e:
        if getattr(e, 'name') == plugin_name:
            raise ImproperlyConfigured(
                "Unable to import plugin {}: Module not found. Check that the plugin module has been installed within the "
                "correct Python environment.".format(plugin_name)
            )
        raise e

    # Determine plugin config and add to INSTALLED_APPS.
    try:
        plugin_config: PluginConfig = plugin.config
    except AttributeError:
        raise ImproperlyConfigured(
            "Plugin {} does not provide a 'config' variable. This should be defined in the plugin's __init__.py file "
            "and point to the PluginConfig subclass.".format(plugin_name)
        )

    plugin_module = "{}.{}".format(plugin_config.__module__, plugin_config.__name__)  # type: ignore

    # Gather additional apps to load alongside this plugin
    django_apps = plugin_config.django_apps
    if plugin_name in django_apps:
        django_apps.pop(plugin_name)
    if plugin_module not in django_apps:
        django_apps.append(plugin_module)

    # Test if we can import all modules (or its parent, for PluginConfigs and AppConfigs)
    for app in django_apps:
        if "." in app:
            parts = app.split(".")
            spec = importlib.util.find_spec(".".join(parts[:-1]))
        else:
            spec = importlib.util.find_spec(app)
        if spec is None:
            raise ImproperlyConfigured(
                f"Failed to load django_apps specified by plugin {plugin_name}: {django_apps} "
                f"The module {app} cannot be imported. Check that the necessary package has been "
                "installed within the correct Python environment."
            )

    INSTALLED_APPS.extend(django_apps)

    # Preserve uniqueness of the INSTALLED_APPS list, we keep the last occurence
    sorted_apps = reversed(list(dict.fromkeys(reversed(INSTALLED_APPS))))
    INSTALLED_APPS = list(sorted_apps)

    # Validate user-provided configuration settings and assign defaults
    if plugin_name not in PLUGINS_CONFIG:
        PLUGINS_CONFIG[plugin_name] = {}
    plugin_config.validate(PLUGINS_CONFIG[plugin_name], VERSION)

    # Add middleware
    plugin_middleware = plugin_config.middleware
    if plugin_middleware and type(plugin_middleware) in (list, tuple):
        MIDDLEWARE.extend(plugin_middleware)

    # Create RQ queues dedicated to the plugin
    # we use the plugin name as a prefix for queue name's defined in the plugin config
    # ex: mysuperplugin.mysuperqueue1
    if type(plugin_config.queues) is not list:
        raise ImproperlyConfigured(
            "Plugin {} queues must be a list.".format(plugin_name)
        )
    RQ_QUEUES.update({
        f"{plugin_name}.{queue}": RQ_PARAMS for queue in plugin_config.queues
    })