"""
Django settings for passbook project.

Generated by 'django-admin startproject' using Django 2.1.3.

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 importlib
import os
import sys

import structlog
from celery.schedules import crontab
from sentry_sdk import init as sentry_init
from sentry_sdk.integrations.celery import CeleryIntegration
from sentry_sdk.integrations.django import DjangoIntegration

from passbook import __version__
from passbook.lib.config import CONFIG
from passbook.lib.sentry import before_send

LOGGER = structlog.get_logger()

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

# 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 = CONFIG.y('secret_key',
                      "9$@r!d^1^jrn#fk#1#@ks#9&i$^s#1)_13%$rwjrhd=e8jfi_s")  # noqa Debug

DEBUG = CONFIG.y_bool('debug')
INTERNAL_IPS = ['127.0.0.1']
ALLOWED_HOSTS = ['*']
SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')

LOGIN_URL = 'passbook_core:auth-login'
# CSRF_FAILURE_VIEW = 'passbook.core.views.errors.CSRFErrorView.as_view'

# Custom user model
AUTH_USER_MODEL = 'passbook_core.User'

CSRF_COOKIE_NAME = 'passbook_csrf'
SESSION_COOKIE_NAME = 'passbook_session'
SESSION_COOKIE_DOMAIN = CONFIG.y('domain', None)
LANGUAGE_COOKIE_NAME = 'passbook_language'

AUTHENTICATION_BACKENDS = [
    'django.contrib.auth.backends.ModelBackend',
    'guardian.backends.ObjectPermissionBackend',
]

# Application definition
INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'django.contrib.postgres',
    'rest_framework',
    'drf_yasg',
    'guardian',
    'django_prometheus',

    'passbook.core.apps.PassbookCoreConfig',
    'passbook.admin.apps.PassbookAdminConfig',
    'passbook.api.apps.PassbookAPIConfig',
    'passbook.lib.apps.PassbookLibConfig',
    'passbook.audit.apps.PassbookAuditConfig',
    'passbook.recovery.apps.PassbookRecoveryConfig',

    'passbook.sources.saml.apps.PassbookSourceSAMLConfig',
    'passbook.sources.ldap.apps.PassbookSourceLDAPConfig',
    'passbook.sources.oauth.apps.PassbookSourceOAuthConfig',

    'passbook.providers.app_gw.apps.PassbookApplicationApplicationGatewayConfig',
    'passbook.providers.oauth.apps.PassbookProviderOAuthConfig',
    'passbook.providers.oidc.apps.PassbookProviderOIDCConfig',
    'passbook.providers.saml.apps.PassbookProviderSAMLConfig',

    'passbook.factors.otp.apps.PassbookFactorOTPConfig',
    'passbook.factors.captcha.apps.PassbookFactorCaptchaConfig',
    'passbook.factors.password.apps.PassbookFactorPasswordConfig',
    'passbook.factors.dummy.apps.PassbookFactorDummyConfig',
    'passbook.factors.email.apps.PassbookFactorEmailConfig',

    'passbook.policies.expiry.apps.PassbookPolicyExpiryConfig',
    'passbook.policies.reputation.apps.PassbookPolicyReputationConfig',
    'passbook.policies.hibp.apps.PassbookPolicyHIBPConfig',
    'passbook.policies.group.apps.PassbookPoliciesGroupConfig',
    'passbook.policies.matcher.apps.PassbookPoliciesMatcherConfig',
    'passbook.policies.password.apps.PassbookPoliciesPasswordConfig',
    'passbook.policies.sso.apps.PassbookPoliciesSSOConfig',
    'passbook.policies.webhook.apps.PassbookPoliciesWebhookConfig',
]

GUARDIAN_MONKEY_PATCH = False

SWAGGER_SETTINGS = {
    'DEFAULT_INFO': 'passbook.api.v2.urls.info',
}

REST_FRAMEWORK = {
    'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.LimitOffsetPagination',
    'PAGE_SIZE': 100,
    'DEFAULT_FILTER_BACKENDS': [
        'django_filters.rest_framework.DjangoFilterBackend',
        'rest_framework.filters.OrderingFilter',
        'rest_framework.filters.SearchFilter',
    ],
    'DEFAULT_PERMISSION_CLASSES': (
        # 'rest_framework.permissions.IsAuthenticated',
        'passbook.api.permissions.CustomObjectPermissions',
    ),
    'DEFAULT_AUTHENTICATION_CLASSES': (
        'rest_framework.authentication.SessionAuthentication',
        # 'rest_framework_jwt.authentication.JSONWebTokenAuthentication',
    ),
}

CACHES = {
    "default": {
        "BACKEND": "django_redis.cache.RedisCache",
        "LOCATION": (f"redis://:{CONFIG.y('redis.password')}@{CONFIG.y('redis.host')}:6379"
                     f"/{CONFIG.y('redis.cache_db')}"),
        "OPTIONS": {
            "CLIENT_CLASS": "django_redis.client.DefaultClient",
        }
    }
}
DJANGO_REDIS_IGNORE_EXCEPTIONS = True
DJANGO_REDIS_LOG_IGNORED_EXCEPTIONS = True
SESSION_ENGINE = "django.contrib.sessions.backends.cache"
SESSION_CACHE_ALIAS = "default"

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

ROOT_URLCONF = 'passbook.root.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 = 'passbook.root.wsgi.application'

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

DATABASES = {
    'default': {
        'ENGINE': 'django_prometheus.db.backends.postgresql',
        'HOST': CONFIG.y('postgresql.host'),
        'NAME': CONFIG.y('postgresql.name'),
        'USER': CONFIG.y('postgresql.user'),
        'PASSWORD': CONFIG.y('postgresql.password'),
    }
}

# 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',
    },
]


# 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


# Celery settings
# Add a 10 minute timeout to all Celery tasks.
CELERY_TASK_SOFT_TIME_LIMIT = 600
CELERY_BEAT_SCHEDULE = {
    'clean_nonces': {
        'task': 'passbook.core.tasks.clean_nonces',
        'schedule': crontab(minute='*/5') # Run every 5 minutes
    }
}
CELERY_CREATE_MISSING_QUEUES = True
CELERY_TASK_DEFAULT_QUEUE = 'passbook'
CELERY_BROKER_URL = (f"redis://:{CONFIG.y('redis.password')}@{CONFIG.y('redis.host')}"
                     f":6379/{CONFIG.y('redis.message_queue_db')}")
CELERY_RESULT_BACKEND = (f"redis://:{CONFIG.y('redis.password')}@{CONFIG.y('redis.host')}"
                         f":6379/{CONFIG.y('redis.message_queue_db')}")

# Database backup
if CONFIG.y('postgresql.backup'):
    INSTALLED_APPS += ['dbbackup']
    DBBACKUP_STORAGE = 'storages.backends.s3boto3.S3Boto3Storage'
    DBBACKUP_CONNECTORS = {
        'default': {
            'CONNECTOR': 'dbbackup.db.postgresql.PgDumpConnector'
        }
    }
    AWS_ACCESS_KEY_ID = CONFIG.y('postgresql.backup.access_key')
    AWS_SECRET_ACCESS_KEY = CONFIG.y('postgresql.backup.secret_key')
    AWS_STORAGE_BUCKET_NAME = CONFIG.y('postgresql.backup.bucket')
    AWS_S3_ENDPOINT_URL = CONFIG.y('postgresql.backup.host')
    AWS_DEFAULT_ACL = None
    LOGGER.info('Database backup is configured', host=CONFIG.y('postgresql.backup.host'))
    # Add automatic task to backup
    CELERY_BEAT_SCHEDULE['db_backup'] = {
        'task': 'passbook.lib.tasks.backup_database',
        'schedule': crontab(minute=0, hour=0)  # Run every day, midnight
    }

# Sentry integration
_ERROR_REPORTING = CONFIG.y_bool('error_reporting', False)
if not DEBUG and _ERROR_REPORTING:
    LOGGER.info("Error reporting is enabled.")
    sentry_init(
        dsn="https://33cdbcb23f8b436dbe0ee06847410b67@sentry.beryju.org/3",
        integrations=[
            DjangoIntegration(),
            CeleryIntegration()
        ],
        send_default_pii=True,
        before_send=before_send,
        release='passbook@%s' % __version__
    )

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

STATIC_URL = '/static/'


structlog.configure_once(
    processors=[
        structlog.stdlib.add_log_level,
        structlog.stdlib.PositionalArgumentsFormatter(),
        structlog.processors.TimeStamper(),
        structlog.processors.StackInfoRenderer(),
        # structlog.processors.format_exc_info,
        structlog.stdlib.ProcessorFormatter.wrap_for_formatter,
    ],
    context_class=structlog.threadlocal.wrap_dict(dict),
    logger_factory=structlog.stdlib.LoggerFactory(),
    wrapper_class=structlog.stdlib.BoundLogger,
    cache_logger_on_first_use=True,
)

LOG_PRE_CHAIN = [
    # Add the log level and a timestamp to the event_dict if the log entry
    # is not from structlog.
    structlog.stdlib.add_log_level,
    structlog.processors.TimeStamper(),
]

LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'formatters': {
        "plain": {
            "()": structlog.stdlib.ProcessorFormatter,
            "processor": structlog.processors.JSONRenderer(sort_keys=True),
            "foreign_pre_chain": LOG_PRE_CHAIN,
        },
        "colored": {
            "()": structlog.stdlib.ProcessorFormatter,
            "processor": structlog.dev.ConsoleRenderer(colors=DEBUG),
            "foreign_pre_chain": LOG_PRE_CHAIN,
        },
    },
    'handlers': {
        'console': {
            'level': DEBUG,
            'class': 'logging.StreamHandler',
            'formatter': "colored" if DEBUG else "plain",
        },
    },
    'loggers': {
    }
}
_LOGGING_HANDLER_MAP = {
    'passbook': 'DEBUG',
    'django': 'WARNING',
    'celery': 'WARNING',
    'grpc': 'DEBUG',
    'oauthlib': 'DEBUG',
    'oauth2_provider': 'DEBUG',
    'oidc_provider': 'DEBUG',
}
for handler_name, level in _LOGGING_HANDLER_MAP.items():
    LOGGING['loggers'][handler_name] = {
        'handlers': ['console'],
        'level': level,
        'propagate': True,
    }

TEST = False
TEST_RUNNER = 'xmlrunner.extra.djangotestrunner.XMLTestRunner'
TEST_OUTPUT_VERBOSE = 2

TEST_OUTPUT_FILE_NAME = 'unittest.xml'

if any('test' in arg for arg in sys.argv):
    LOGGING = None
    TEST = True
    CELERY_TASK_ALWAYS_EAGER = True


_DISALLOWED_ITEMS = [
    'INSTALLED_APPS',
    'MIDDLEWARE',
    'AUTHENTICATION_BACKENDS',
    'CELERY_BEAT_SCHEDULE'
]
# Load subapps's INSTALLED_APPS
for _app in INSTALLED_APPS:
    if _app.startswith('passbook'):
        if 'apps' in _app:
            _app = '.'.join(_app.split('.')[:-2])
        try:
            app_settings = importlib.import_module("%s.settings" % _app)
            INSTALLED_APPS.extend(getattr(app_settings, 'INSTALLED_APPS', []))
            MIDDLEWARE.extend(getattr(app_settings, 'MIDDLEWARE', []))
            AUTHENTICATION_BACKENDS.extend(getattr(app_settings, 'AUTHENTICATION_BACKENDS', []))
            CELERY_BEAT_SCHEDULE.update(getattr(app_settings, 'CELERY_BEAT_SCHEDULE', {}))
            for _attr in dir(app_settings):
                if not _attr.startswith('__') and _attr not in _DISALLOWED_ITEMS:
                    globals()[_attr] = getattr(app_settings, _attr)
        except ImportError:
            pass

if DEBUG:
    INSTALLED_APPS.append('debug_toolbar')
    MIDDLEWARE.append('debug_toolbar.middleware.DebugToolbarMiddleware')