#
# This file is part of pretix (Community Edition).
#
# Copyright (C) 2014-2020 Raphael Michel and contributors
# Copyright (C) 2020-2021 rami.io GmbH and contributors
#
# This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
# Public License as published by the Free Software Foundation in version 3 of the License.
#
# ADDITIONAL TERMS APPLY: Pursuant to Section 7 of the GNU Affero General Public License, additional terms are
# applicable granting you additional permissions and placing additional restrictions on your usage of this software.
# Please refer to the pretix LICENSE file to obtain the full terms applicable to this work. If you did not receive
# this file, see <https://pretix.eu/about/en/license>.
#
# This program 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 Affero General Public License for more
# details.
#
# You should have received a copy of the GNU Affero General Public License along with this program.  If not, see
# <https://www.gnu.org/licenses/>.
#

# This file is based on an earlier version of pretix which was released under the Apache License 2.0. The full text of
# the Apache License 2.0 can be obtained at <http://www.apache.org/licenses/LICENSE-2.0>.
#
# This file may have since been changed and any changes are released under the terms of AGPLv3 as described above. A
# full history of changes and contributors is available at <https://github.com/pretix/pretix>.
#
# This file contains Apache-licensed contributions copyrighted by: FlaviaBastos, Jason Estibeiro, Jonas Große Sundrup,
# Laura Klünder, Matthew Emerson, Nils Schneider, Tim Freund, Tobias Kunze
#
# Unless required by applicable law or agreed to in writing, software distributed under the Apache License 2.0 is
# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations under the License.

import configparser
import logging
import os
import sys
from json import loads
from pathlib import Path
from urllib.parse import urlparse

import importlib_metadata as metadata
from django.core.exceptions import ImproperlyConfigured
from django.utils.crypto import get_random_string
from kombu import Queue

from . import __version__
from .helpers.config import EnvOrParserConfig

# Pull in all settings that we also need at wheel require time
from ._base_settings import *  # NOQA


from django.contrib.messages import constants as messages  # NOQA
from django.utils.translation import gettext_lazy as _  # NOQA

_config = configparser.RawConfigParser()
if 'PRETIX_CONFIG_FILE' in os.environ:
    _config.read_file(open(os.environ.get('PRETIX_CONFIG_FILE'), encoding='utf-8'))
else:
    _config.read(['/etc/pretix/pretix.cfg', os.path.expanduser('~/.pretix.cfg'), 'pretix.cfg'],
                 encoding='utf-8')
config = EnvOrParserConfig(_config)

CONFIG_FILE = config
DATA_DIR = config.get('pretix', 'datadir', fallback=os.environ.get('DATA_DIR', 'data'))
LOG_DIR = config.get('pretix', 'logdir', fallback=os.path.join(DATA_DIR, 'logs'))
MEDIA_ROOT = os.path.join(DATA_DIR, 'media')
PROFILE_DIR = os.path.join(DATA_DIR, 'profiles')
CACHE_DIR = config.get('pretix', 'cachedir', fallback=os.path.join(DATA_DIR, 'cache'))

Path(DATA_DIR).mkdir(parents=False, exist_ok=True)
Path(LOG_DIR).mkdir(parents=False, exist_ok=True)
Path(MEDIA_ROOT).mkdir(parents=False, exist_ok=True)
Path(CACHE_DIR).mkdir(parents=False, exist_ok=True)

if config.has_option('django', 'secret'):
    SECRET_KEY = config.get('django', 'secret')
else:
    SECRET_FILE = os.path.join(DATA_DIR, '.secret')
    if os.path.exists(SECRET_FILE):
        with open(SECRET_FILE, 'r') as f:
            SECRET_KEY = f.read().strip()
    else:
        chars = 'abcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*(-_=+)'
        SECRET_KEY = get_random_string(50, chars)
        with open(SECRET_FILE, 'w') as f:
            os.chmod(SECRET_FILE, 0o600)
            try:
                os.chown(SECRET_FILE, os.getuid(), os.getgid())
            except AttributeError:
                pass  # os.chown is not available on Windows
            f.write(SECRET_KEY)


SECRET_KEY_FALLBACKS = []
for i in range(10):
    if config.has_option('django', f'secret_fallback{i}'):
        SECRET_KEY_FALLBACKS.append(config.get('django', f'secret_fallback{i}'))


# Adjustable settings

debug_fallback = "runserver" in sys.argv or "runserver_plus" in sys.argv
DEBUG = config.getboolean('django', 'debug', fallback=debug_fallback)
LOG_CSP = config.getboolean('pretix', 'csp_log', fallback=False)
CSP_ADDITIONAL_HEADER = config.get('pretix', 'csp_additional_header', fallback='')

PDFTK = config.get('tools', 'pdftk', fallback=None)

PRETIX_AUTH_BACKENDS = config.get('pretix', 'auth_backends', fallback='pretix.base.auth.NativeAuthBackend').split(',')

db_backend = config.get('database', 'backend', fallback='sqlite3')
if db_backend == 'postgresql_psycopg2':
    db_backend = 'postgresql'
elif 'mysql' in db_backend:
    print("pretix does no longer support running on MySQL/MariaDB")
    sys.exit(1)

DATABASE_ADVISORY_LOCK_INDEX = config.getint('database', 'advisory_lock_index', fallback=0)

db_options = {}

postgresql_sslmode = config.get('database', 'sslmode', fallback='disable')
USE_DATABASE_TLS = postgresql_sslmode != 'disable'
USE_DATABASE_MTLS = USE_DATABASE_TLS and config.has_option('database', 'sslcert')

if USE_DATABASE_TLS or USE_DATABASE_MTLS:
    tls_config = {}
    if not USE_DATABASE_MTLS:
        if 'postgresql' in db_backend:
            tls_config = {
                'sslmode': config.get('database', 'sslmode'),
                'sslrootcert': config.get('database', 'sslrootcert'),
            }
    else:
        if 'postgresql' in db_backend:
            tls_config = {
                'sslmode': config.get('database', 'sslmode'),
                'sslrootcert': config.get('database', 'sslrootcert'),
                'sslcert': config.get('database', 'sslcert'),
                'sslkey': config.get('database', 'sslkey'),
            }

    db_options.update(tls_config)

db_disable_server_side_cursors = db_backend == 'postgresql' and config.getboolean('database', 'disable_server_side_cursors', fallback=False)

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.' + db_backend,
        'NAME': config.get('database', 'name', fallback=os.path.join(DATA_DIR, 'db.sqlite3')),
        'USER': config.get('database', 'user', fallback=''),
        'PASSWORD': config.get('database', 'password', fallback=''),
        'HOST': config.get('database', 'host', fallback=''),
        'PORT': config.get('database', 'port', fallback=''),
        'CONN_MAX_AGE': 0 if db_backend == 'sqlite3' else 120,
        'CONN_HEALTH_CHECKS': db_backend != 'sqlite3',  # Will only be used from Django 4.1 onwards
        'DISABLE_SERVER_SIDE_CURSORS': db_disable_server_side_cursors,
        'OPTIONS': db_options,
        'TEST': {}
    }
}
DATABASE_REPLICA = 'default'
if config.has_section('replica'):
    DATABASE_REPLICA = 'replica'
    DATABASES['replica'] = {
        'ENGINE': 'django.db.backends.' + db_backend,
        'NAME': config.get('replica', 'name', fallback=DATABASES['default']['NAME']),
        'USER': config.get('replica', 'user', fallback=DATABASES['default']['USER']),
        'PASSWORD': config.get('replica', 'password', fallback=DATABASES['default']['PASSWORD']),
        'HOST': config.get('replica', 'host', fallback=DATABASES['default']['HOST']),
        'PORT': config.get('replica', 'port', fallback=DATABASES['default']['PORT']),
        'CONN_MAX_AGE': 0 if db_backend == 'sqlite3' else 120,
        'OPTIONS': db_options,
        'TEST': {}
    }
    DATABASE_ROUTERS = ['pretix.helpers.database.ReplicaRouter']

STATIC_URL = config.get('urls', 'static', fallback='/static/')

MEDIA_URL = config.get('urls', 'media', fallback='/media/')

PRETIX_INSTANCE_NAME = config.get('pretix', 'instance_name', fallback='pretix.de')
PRETIX_REGISTRATION = config.getboolean('pretix', 'registration', fallback=False)
PRETIX_PASSWORD_RESET = config.getboolean('pretix', 'password_reset', fallback=True)
PRETIX_LONG_SESSIONS = config.getboolean('pretix', 'long_sessions', fallback=True)
PRETIX_ADMIN_AUDIT_COMMENTS = config.getboolean('pretix', 'audit_comments', fallback=False)

_obligatory_2fa = config.get('pretix', 'obligatory_2fa', fallback="False")
_mapping = {'1': True, 'yes': True, 'true': True, 'on': True, '0': False, 'no': False, 'false': False, 'off': False, 'staff': 'staff'}
if _obligatory_2fa.lower() not in _mapping:
    raise ImproperlyConfigured(
        f"Value '{_obligatory_2fa}' not allowed for configuration key pretix.obligatory_2fa."
    )
PRETIX_OBLIGATORY_2FA = _mapping[_obligatory_2fa.lower()]

PRETIX_SESSION_TIMEOUT_RELATIVE = 3600 * 3
PRETIX_SESSION_TIMEOUT_ABSOLUTE = 3600 * 12

SITE_URL = config.get('pretix', 'url', fallback='http://localhost:8000')
if SITE_URL.endswith('/'):
    SITE_URL = SITE_URL[:-1]

CSRF_TRUSTED_ORIGINS = [urlparse(SITE_URL).scheme + '://' + urlparse(SITE_URL).hostname]

TRUST_X_FORWARDED_FOR = config.getboolean('pretix', 'trust_x_forwarded_for', fallback=False)
USE_X_FORWARDED_HOST = config.getboolean('pretix', 'trust_x_forwarded_host', fallback=False)


REQUEST_ID_HEADER = config.get('pretix', 'request_id_header', fallback=False)

if config.getboolean('pretix', 'trust_x_forwarded_proto', fallback=False):
    SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')

PRETIX_PLUGINS_DEFAULT = config.get('pretix', 'plugins_default',
                                    fallback='pretix.plugins.sendmail,pretix.plugins.statistics,pretix.plugins.checkinlists')
PRETIX_PLUGINS_EXCLUDE = config.get('pretix', 'plugins_exclude', fallback='').split(',')
PRETIX_PLUGINS_SHOW_META = config.getboolean('pretix', 'plugins_show_meta', fallback=True)

FETCH_ECB_RATES = config.getboolean('pretix', 'ecb_rates', fallback=True)

DEFAULT_CURRENCY = config.get('pretix', 'currency', fallback='EUR')

ALLOWED_HOSTS = ['*']

LANGUAGE_CODE = config.get('locale', 'default', fallback='en')
TIME_ZONE = config.get('locale', 'timezone', fallback='UTC')

MAIL_FROM = SERVER_EMAIL = DEFAULT_FROM_EMAIL = config.get('mail', 'from', fallback='pretix@localhost')
MAIL_FROM_NOTIFICATIONS = config.get('mail', 'from_notifications', fallback=MAIL_FROM)
MAIL_FROM_ORGANIZERS = config.get('mail', 'from_organizers', fallback=MAIL_FROM)
MAIL_CUSTOM_SENDER_VERIFICATION_REQUIRED = config.getboolean('mail', 'custom_sender_verification_required', fallback=True)
MAIL_CUSTOM_SENDER_SPF_STRING = config.get('mail', 'custom_sender_spf_string', fallback='')
MAIL_CUSTOM_SMTP_ALLOW_PRIVATE_NETWORKS = config.getboolean('mail', 'custom_smtp_allow_private_networks', fallback=DEBUG)
EMAIL_HOST = config.get('mail', 'host', fallback='localhost')
EMAIL_PORT = config.getint('mail', 'port', fallback=25)
EMAIL_HOST_USER = config.get('mail', 'user', fallback='')
EMAIL_HOST_PASSWORD = config.get('mail', 'password', fallback='')
EMAIL_USE_TLS = config.getboolean('mail', 'tls', fallback=False)
EMAIL_USE_SSL = config.getboolean('mail', 'ssl', fallback=False)
EMAIL_SUBJECT_PREFIX = '[pretix] '
EMAIL_BACKEND = EMAIL_CUSTOM_SMTP_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
EMAIL_TIMEOUT = 60

ADMINS = [('Admin', n) for n in config.get('mail', 'admins', fallback='').split(",") if n]

METRICS_ENABLED = config.getboolean('metrics', 'enabled', fallback=False)
METRICS_USER = config.get('metrics', 'user', fallback="metrics")
METRICS_PASSPHRASE = config.get('metrics', 'passphrase', fallback="")

CACHES = {
    'default': {
        'BACKEND': 'pretix.helpers.cache.CustomDummyCache',
    }
}
REAL_CACHE_USED = False
SESSION_ENGINE = None

HAS_MEMCACHED = config.has_option('memcached', 'location')
if HAS_MEMCACHED:
    REAL_CACHE_USED = True
    CACHES['default'] = {
        'BACKEND': 'django.core.cache.backends.memcached.PyLibMCCache',
        'LOCATION': config.get('memcached', 'location'),
    }

HAS_REDIS = config.has_option('redis', 'location')
USE_REDIS_SENTINEL = config.has_option('redis', 'sentinels')
redis_ssl_cert_reqs = config.get('redis', 'ssl_cert_reqs', fallback='none')
USE_REDIS_TLS = redis_ssl_cert_reqs != 'none'
USE_REDIS_MTLS = USE_REDIS_TLS and config.has_option('redis', 'ssl_certfile')
HAS_REDIS_PASSWORD = config.has_option('redis', 'password')
if HAS_REDIS:
    OPTIONS = {
        "CLIENT_CLASS": "django_redis.client.DefaultClient",
        "REDIS_CLIENT_KWARGS": {"health_check_interval": 30}
    }

    if USE_REDIS_SENTINEL:
        DJANGO_REDIS_CONNECTION_FACTORY = "django_redis.pool.SentinelConnectionFactory"
        OPTIONS["CLIENT_CLASS"] = "django_redis.client.SentinelClient"
        OPTIONS["CONNECTION_POOL_CLASS"] = "redis.sentinel.SentinelConnectionPool"
        # See https://github.com/jazzband/django-redis/issues/540
        OPTIONS["SENTINEL_KWARGS"] = {"socket_timeout": 1}
        OPTIONS["SENTINELS"] = [tuple(sentinel) for sentinel in loads(config.get('redis', 'sentinels'))]

    if USE_REDIS_TLS or USE_REDIS_MTLS:
        tls_config = {}
        if not USE_REDIS_MTLS:
            tls_config = {
                'ssl_cert_reqs': config.get('redis', 'ssl_cert_reqs'),
                'ssl_ca_certs': config.get('redis', 'ssl_ca_certs'),
            }
        else:
            tls_config = {
                'ssl_cert_reqs': config.get('redis', 'ssl_cert_reqs'),
                'ssl_ca_certs': config.get('redis', 'ssl_ca_certs'),
                'ssl_keyfile': config.get('redis', 'ssl_keyfile'),
                'ssl_certfile': config.get('redis', 'ssl_certfile'),
            }

        if USE_REDIS_SENTINEL is False:
            # The CONNECTION_POOL_KWARGS option is necessary for self-signed certs. For further details, please check
            # https://github.com/jazzband/django-redis/issues/554#issuecomment-949498321
            OPTIONS["CONNECTION_POOL_KWARGS"] = tls_config
            OPTIONS["REDIS_CLIENT_KWARGS"].update(tls_config)
        else:
            OPTIONS["SENTINEL_KWARGS"].update(tls_config)

    if HAS_REDIS_PASSWORD:
        OPTIONS["PASSWORD"] = config.get('redis', 'password')

    CACHES['redis'] = {
        "BACKEND": "django_redis.cache.RedisCache",
        "LOCATION": config.get('redis', 'location'),
        "OPTIONS": OPTIONS
    }
    CACHES['redis_sessions'] = {
        "BACKEND": "django_redis.cache.RedisCache",
        "LOCATION": config.get('redis', 'location'),
        "TIMEOUT": 3600 * 24 * 30,
        "OPTIONS": OPTIONS
    }
    if not HAS_MEMCACHED:
        CACHES['default'] = CACHES['redis']
        REAL_CACHE_USED = True
    if config.getboolean('redis', 'sessions', fallback=False):
        SESSION_ENGINE = "django.contrib.sessions.backends.cache"
        SESSION_CACHE_ALIAS = "redis_sessions"

if not SESSION_ENGINE:
    if REAL_CACHE_USED:
        SESSION_ENGINE = "django.contrib.sessions.backends.cached_db"
    else:
        SESSION_ENGINE = "django.contrib.sessions.backends.db"

HAS_CELERY = config.has_option('celery', 'broker')
HAS_CELERY_BROKER_TRANSPORT_OPTS = config.has_option('celery', 'broker_transport_options')
HAS_CELERY_BACKEND_TRANSPORT_OPTS = config.has_option('celery', 'backend_transport_options')
if HAS_CELERY:
    CELERY_BROKER_URL = config.get('celery', 'broker')
    CELERY_RESULT_BACKEND = config.get('celery', 'backend')
    if HAS_CELERY_BROKER_TRANSPORT_OPTS:
        CELERY_BROKER_TRANSPORT_OPTIONS = loads(config.get('celery', 'broker_transport_options'))
    if HAS_CELERY_BACKEND_TRANSPORT_OPTS:
        CELERY_RESULT_BACKEND_TRANSPORT_OPTIONS = loads(config.get('celery', 'backend_transport_options'))
    CELERY_BROKER_CONNECTION_RETRY_ON_STARTUP = True
else:
    CELERY_TASK_ALWAYS_EAGER = True

CACHE_TICKETS_HOURS = config.getint('cache', 'tickets', fallback=24 * 3)

ENTROPY = {
    'order_code': config.getint('entropy', 'order_code', fallback=5),
    'customer_identifier': config.getint('entropy', 'customer_identifier', fallback=7),
    'ticket_secret': config.getint('entropy', 'ticket_secret', fallback=32),
    'voucher_code': config.getint('entropy', 'voucher_code', fallback=16),
    'giftcard_secret': config.getint('entropy', 'giftcard_secret', fallback=12),
}

HAS_GEOIP = False
if config.has_option('geoip', 'path'):
    HAS_GEOIP = True
    GEOIP_PATH = config.get('geoip', 'path')
    GEOIP_COUNTRY = config.get('geoip', 'filename_country', fallback='GeoLite2-Country.mmdb')

# Internal settings
SESSION_COOKIE_NAME = 'pretix_session'
LANGUAGE_COOKIE_NAME = 'pretix_language'
CSRF_COOKIE_NAME = 'pretix_csrftoken'
SESSION_COOKIE_HTTPONLY = True

INSTALLED_APPS += [ # noqa
    'django_filters',
    'django_markup',
    'django_otp',
    'django_otp.plugins.otp_totp',
    'django_otp.plugins.otp_static',
    'hijack',
    'localflavor',
]

if db_backend == 'postgresql':
    # ALlow plugins to use django.contrib.postgres
    INSTALLED_APPS.insert(0, 'django.contrib.postgres')

try:
    import django_extensions  # noqa
    INSTALLED_APPS.append('django_extensions')
except ImportError:
    pass

PLUGINS = []
for entry_point in metadata.entry_points(group='pretix.plugin'):
    if entry_point.module in PRETIX_PLUGINS_EXCLUDE:
        continue
    PLUGINS.append(entry_point.module)
    INSTALLED_APPS.append(entry_point.module)

HIJACK_PERMISSION_CHECK = "hijack.permissions.superusers_and_staff"
HIJACK_INSERT_BEFORE = None


REST_FRAMEWORK = {
    'DEFAULT_PERMISSION_CLASSES': [
        'pretix.api.auth.permission.EventPermission',
    ],
    'DEFAULT_PAGINATION_CLASS': 'pretix.api.pagination.Pagination',
    'DEFAULT_VERSIONING_CLASS': 'rest_framework.versioning.NamespaceVersioning',
    'PAGE_SIZE': 50,
    'DEFAULT_AUTHENTICATION_CLASSES': (
        'pretix.api.auth.token.TeamTokenAuthentication',
        'pretix.api.auth.device.DeviceTokenAuthentication',
        'pretix.api.auth.session.SessionAuthentication',
        'oauth2_provider.contrib.rest_framework.OAuth2Authentication',
    ),
    'DEFAULT_RENDERER_CLASSES': (
        'drf_ujson.renderers.UJSONRenderer',
    ),
    'DEFAULT_PARSER_CLASSES': (
        'drf_ujson.parsers.UJSONParser',
        'rest_framework.parsers.FormParser',
        'rest_framework.parsers.MultiPartParser'
    ),
    'TEST_REQUEST_RENDERER_CLASSES': [
        'rest_framework.renderers.MultiPartRenderer',
        'rest_framework.renderers.JSONRenderer',
        'pretix.testutils.api.UploadRenderer',
    ],
    'EXCEPTION_HANDLER': 'pretix.api.exception.custom_exception_handler',
    'UNICODE_JSON': False
}


CORE_MODULES = {
    "pretix.base",
    "pretix.presale",
    "pretix.control",
    "pretix.plugins.checkinlists",
    "pretix.plugins.reports",
}

MIDDLEWARE = [
    'pretix.helpers.logs.RequestIdMiddleware',
    'pretix.api.middleware.IdempotencyMiddleware',
    'pretix.multidomain.middlewares.MultiDomainMiddleware',
    'pretix.base.middleware.CustomCommonMiddleware',
    'pretix.multidomain.middlewares.SessionMiddleware',
    'pretix.multidomain.middlewares.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
    'hijack.middleware.HijackUserMiddleware',
    'pretix.control.middleware.PermissionMiddleware',
    'pretix.control.middleware.AuditLogMiddleware',
    'pretix.base.middleware.LocaleMiddleware',
    'pretix.base.middleware.SecurityMiddleware',
    'pretix.presale.middleware.EventMiddleware',
    'pretix.api.middleware.ApiScopeMiddleware',
]

try:
    import debug_toolbar.settings  # noqa
    if DEBUG:
        INSTALLED_APPS.append('debug_toolbar.apps.DebugToolbarConfig')
        MIDDLEWARE.insert(0, 'debug_toolbar.middleware.DebugToolbarMiddleware')
        DEBUG_TOOLBAR_PATCH_SETTINGS = False
        DEBUG_TOOLBAR_CONFIG = {
            'JQUERY_URL': '',
            'DISABLE_PANELS': debug_toolbar.settings.PANELS_DEFAULTS,
        }
    pass
except ImportError:
    pass


if METRICS_ENABLED:
    MIDDLEWARE.insert(MIDDLEWARE.index('pretix.base.middleware.CustomCommonMiddleware') + 1,
                      'pretix.helpers.metrics.middleware.MetricsMiddleware')


PROFILING_RATE = config.getfloat('django', 'profile', fallback=0)  # Percentage of requests to profile
if PROFILING_RATE > 0:
    if not os.path.exists(PROFILE_DIR):
        os.mkdir(PROFILE_DIR)
    MIDDLEWARE.insert(0, 'pretix.helpers.profile.middleware.CProfileMiddleware')


# Security settings
X_FRAME_OPTIONS = 'DENY'

# URL settings
ROOT_URLCONF = 'pretix.multidomain.maindomain_urlconf'

WSGI_APPLICATION = 'pretix.wsgi.application'

if config.has_option('languages', 'path'):
    LOCALE_PATHS.insert(0, config.get('languages', 'path')) # noqa

LANGUAGES_INCUBATING = LANGUAGES_INCUBATING - set(config.get('languages', 'allow_incubating', fallback='').split(',')) # noqa
LANGUAGES = []
LANGUAGES_ENABLED = [lang for lang in config.get("languages", "enabled", fallback='').split(',') if lang]
for k, v in ALL_LANGUAGES: # noqa
    if not DEBUG and k in LANGUAGES_INCUBATING:
        continue
    if LANGUAGES_ENABLED and k not in LANGUAGES_ENABLED:
        continue
    LANGUAGES.append((k, v))

if LANGUAGE_CODE not in {l[0] for l in LANGUAGES}:
    raise ImproperlyConfigured(
        f"Default language {LANGUAGE_CODE} is not one of the available and enabled languages."
    )


AUTH_USER_MODEL = 'pretixbase.User'
LOGIN_URL = 'control:auth.login'
LOGIN_URL_CONTROL = 'control:auth.login'
CSRF_FAILURE_VIEW = 'pretix.base.views.errors.csrf_failure'

template_loaders = (
    'django.template.loaders.filesystem.Loader',
    'pretix.helpers.template_loaders.AppLoader',
)
if not DEBUG:
    TEMPLATES[0]['OPTIONS']['loaders'] = ( # noqa
        ('django.template.loaders.cached.Loader', template_loaders),
    )
TEMPLATES[0]['DIRS'].insert(0, os.path.join(DATA_DIR, 'templates')) # noqa

INTERNAL_IPS = ('127.0.0.1', '::1')

MESSAGE_TAGS = {
    messages.INFO: 'alert-info',
    messages.ERROR: 'alert-danger',
    messages.WARNING: 'alert-warning',
    messages.SUCCESS: 'alert-success',
}
MESSAGE_STORAGE = 'django.contrib.messages.storage.session.SessionStorage'

loglevel = 'DEBUG' if DEBUG else config.get('pretix', 'loglevel', fallback='INFO')

COMPRESS_ENABLED = COMPRESS_OFFLINE = not debug_fallback

LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'formatters': {
        'default': {
            'format': (
                '%(levelname)s %(asctime)s RequestId=%(request_id)s %(name)s %(module)s %(message)s'
                if REQUEST_ID_HEADER
                else '%(levelname)s %(asctime)s %(name)s %(module)s %(message)s'
            )
        },
    },
    'filters': {
        'require_admin_enabled': {
            '()': 'pretix.helpers.logs.AdminExistsFilter',
        },
        'request_id': {
            '()': 'pretix.helpers.logs.RequestIdFilter'
        },
    },
    'handlers': {
        'console': {
            'level': loglevel,
            'class': 'logging.StreamHandler',
            'formatter': 'default',
            'filters': ['request_id'],
        },
        'csp_file': {
            'level': loglevel,
            'class': 'logging.FileHandler',
            'filename': os.path.join(LOG_DIR, 'csp.log'),
            'formatter': 'default',
            'filters': ['request_id'],
        },
        'file': {
            'level': loglevel,
            'class': 'logging.FileHandler',
            'filename': os.path.join(LOG_DIR, 'pretix.log'),
            'formatter': 'default',
            'filters': ['request_id'],
        },
        'mail_admins': {
            'level': 'ERROR',
            'class': 'django.utils.log.AdminEmailHandler',
            'filters': ['require_admin_enabled']
        },
        'null': {
            'class': 'logging.NullHandler',
        },
    },
    'loggers': {
        '': {
            'handlers': ['file', 'console'],
            'level': loglevel,
            'propagate': True,
        },
        'django.request': {
            'handlers': ['file', 'console', 'mail_admins'],
            'level': loglevel,
            'propagate': True,
        },
        'pretix.security.csp': {
            'handlers': ['csp_file'],
            'level': loglevel,
            'propagate': False,
        },
        'django.security': {
            'handlers': ['file', 'console', 'mail_admins'],
            'level': loglevel,
            'propagate': True,
        },
        'django.security.DisallowedHost': {
            'handlers': ['null'],
            'propagate': False,
        },
        'django.db.backends': {
            'handlers': ['file', 'console'],
            'level': 'INFO',  # Do not output all the queries
            'propagate': False,
        },
        'asyncio': {
            'handlers': ['file', 'console'],
            'level': 'WARNING',
        },
    },
}

SENTRY_ENABLED = False
if config.has_option('sentry', 'dsn') and not any(c in sys.argv for c in ('shell', 'shell_scoped', 'shell_plus')):
    import django.db.models.signals
    import sentry_sdk
    from sentry_sdk.integrations.celery import CeleryIntegration
    from sentry_sdk.integrations.logging import (
        LoggingIntegration, ignore_logger,
    )
    from sentry_sdk.scrubber import EventScrubber, DEFAULT_DENYLIST

    from .sentry import PretixSentryIntegration, setup_custom_filters

    SENTRY_TOKEN = config.get('sentry', 'traces_sample_token', fallback='')
    pretix_denylist = DEFAULT_DENYLIST + [
        "access_token",
        "sentry_dsn",
    ]

    def traces_sampler(sampling_context):
        qs = sampling_context.get('wsgi_environ', {}).get('QUERY_STRING', '')
        if SENTRY_TOKEN and SENTRY_TOKEN in qs:
            return 1.0
        return config.getfloat('sentry', 'traces_sample_rate', fallback=0.0)

    SENTRY_ENABLED = True
    sentry_sdk.init(
        dsn=config.get('sentry', 'dsn'),
        integrations=[
            PretixSentryIntegration(
                signals_denylist=[
                    django.db.models.signals.pre_init,
                    django.db.models.signals.post_init,
                ]
            ),
            CeleryIntegration(),
            LoggingIntegration(
                level=logging.INFO,
                event_level=logging.CRITICAL
            )
        ],
        traces_sampler=traces_sampler,
        environment=urlparse(SITE_URL).netloc,
        release=__version__,
        event_scrubber=EventScrubber(denylist=pretix_denylist, recursive=True),
        send_default_pii=False,
        propagate_traces=False,  # see https://github.com/getsentry/sentry-python/issues/1717
    )
    ignore_logger('pretix.base.tasks')
    ignore_logger('django.security.DisallowedHost')
    setup_custom_filters()

CELERY_TASK_SERIALIZER = 'json'
CELERY_RESULT_SERIALIZER = 'json'
CELERY_TASK_DEFAULT_QUEUE = 'default'
CELERY_TASK_QUEUES = (
    Queue('default', routing_key='default.#'),
    Queue('checkout', routing_key='checkout.#'),
    Queue('mail', routing_key='mail.#'),
    Queue('background', routing_key='background.#'),
    Queue('notifications', routing_key='notifications.#'),
)
CELERY_TASK_ROUTES = ([
    ('pretix.base.services.cart.*', {'queue': 'checkout'}),
    ('pretix.base.services.export.scheduled_organizer_export', {'queue': 'background'}),
    ('pretix.base.services.export.scheduled_event_export', {'queue': 'background'}),
    ('pretix.base.services.orders.*', {'queue': 'checkout'}),
    ('pretix.base.services.mail.*', {'queue': 'mail'}),
    ('pretix.base.services.update_check.*', {'queue': 'background'}),
    ('pretix.base.services.quotas.*', {'queue': 'background'}),
    ('pretix.base.services.waitinglist.*', {'queue': 'background'}),
    ('pretix.base.services.notifications.*', {'queue': 'notifications'}),
    ('pretix.api.webhooks.*', {'queue': 'notifications'}),
    ('pretix.presale.style.*', {'queue': 'background'}),
    ('pretix.plugins.banktransfer.*', {'queue': 'background'}),
],)

BOOTSTRAP3 = {
    'success_css_class': '',
    'field_renderers': {
        'default': 'bootstrap3.renderers.FieldRenderer',
        'inline': 'bootstrap3.renderers.InlineFieldRenderer',
        'control': 'pretix.control.forms.renderers.ControlFieldRenderer',
        'control_with_visibility': 'pretix.control.forms.renderers.ControlFieldWithVisibilityRenderer',
        'bulkedit': 'pretix.control.forms.renderers.BulkEditFieldRenderer',
        'bulkedit_inline': 'pretix.control.forms.renderers.InlineBulkEditFieldRenderer',
        'checkout': 'pretix.presale.forms.renderers.CheckoutFieldRenderer',
    },
}

PASSWORD_HASHERS = [
    # Note that when updating this, all user passwords will be re-hashed on next login, however,
    # the HistoricPassword model will not be changed automatically. In case a serious issue with a hasher
    # comes to light, dropping the contents of the HistoricPassword table might be the more risk-adequate
    # decision.
    *(
        ["django.contrib.auth.hashers.Argon2PasswordHasher"]
        if config.getboolean('django', 'passwords_argon2', fallback=True)
        else []
    ),
    "django.contrib.auth.hashers.PBKDF2PasswordHasher",
    "django.contrib.auth.hashers.PBKDF2SHA1PasswordHasher",
    "django.contrib.auth.hashers.BCryptSHA256PasswordHasher",
    "django.contrib.auth.hashers.ScryptPasswordHasher",
]
AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        "NAME": "django.contrib.auth.password_validation.MinimumLengthValidator",
        "OPTIONS": {
            # To fulfill per PCI DSS requirement 8.3.6
            "min_length": 12,
        },
    },
    {
        # To fulfill per PCI DSS requirement 8.3.6
        'NAME': 'pretix.base.auth.NumericAndAlphabeticPasswordValidator',
    },
    {
        "NAME": "pretix.base.auth.HistoryPasswordValidator",
        "OPTIONS": {
            # To fulfill per PCI DSS requirement 8.3.7
            "history_length": 4,
        },
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]
CUSTOMER_AUTH_PASSWORD_VALIDATORS = [
    # For customer accounts, we apply a little less strict requirements to provide a risk-adequate
    # user experience.
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        "NAME": "django.contrib.auth.password_validation.MinimumLengthValidator",
        "OPTIONS": {
            "min_length": 8,
        },
    },
    {
        'NAME': 'pretix.base.auth.NumericAndAlphabeticPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]
OAUTH2_PROVIDER_APPLICATION_MODEL = 'pretixapi.OAuthApplication'
OAUTH2_PROVIDER_GRANT_MODEL = 'pretixapi.OAuthGrant'
OAUTH2_PROVIDER_ACCESS_TOKEN_MODEL = 'pretixapi.OAuthAccessToken'
OAUTH2_PROVIDER_ID_TOKEN_MODEL = 'pretixapi.OAuthIDToken'
OAUTH2_PROVIDER_REFRESH_TOKEN_MODEL = 'pretixapi.OAuthRefreshToken'
OAUTH2_PROVIDER = {
    'SCOPES': {
        'profile': _('User profile only'),
        'read': _('Read access'),
        'write': _('Write access'),
    },
    'OAUTH2_VALIDATOR_CLASS': 'pretix.api.oauth.Validator',
    'ALLOWED_REDIRECT_URI_SCHEMES': ['https'] if not DEBUG else ['http', 'https'],
    'ACCESS_TOKEN_EXPIRE_SECONDS': 3600 * 24,
    'ROTATE_REFRESH_TOKEN': False,
    'PKCE_REQUIRED': False,
    'OIDC_RESPONSE_TYPES_SUPPORTED': ["code"],  # We don't support proper OIDC for now
}

COUNTRIES_OVERRIDE = {
    'XK': _('Kosovo'),
}

DATA_UPLOAD_MAX_NUMBER_FIELDS = 25000
DATA_UPLOAD_MAX_MEMORY_SIZE = 10 * 1024 * 1024  # 10 MB

# File sizes are in MiB
FILE_UPLOAD_MAX_SIZE_IMAGE = 1024 * 1024 * config.getint("pretix_file_upload", "max_size_image", fallback=10)
FILE_UPLOAD_MAX_SIZE_FAVICON = 1024 * 1024 * config.getint("pretix_file_upload", "max_size_favicon", fallback=1)
FILE_UPLOAD_MAX_SIZE_EMAIL_ATTACHMENT = 1024 * 1024 * config.getint("pretix_file_upload", "max_size_email_attachment", fallback=5)
FILE_UPLOAD_MAX_SIZE_EMAIL_AUTO_ATTACHMENT = 1024 * 1024 * config.getint("pretix_file_upload", "max_size_email_auto_attachment", fallback=1)
FILE_UPLOAD_MAX_SIZE_OTHER = 1024 * 1024 * config.getint("pretix_file_upload", "max_size_other", fallback=10)

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'