# -*- coding: utf-8 -*-
"""
Django settings for funkwhale_api project.

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

For the full list of settings and their values, see
https://docs.djangoproject.com/en/dev/ref/settings/
"""
from __future__ import absolute_import, unicode_literals

from urllib.parse import urlsplit
import os
import environ
from celery.schedules import crontab

from funkwhale_api import __version__

ROOT_DIR = environ.Path(__file__) - 3  # (/a/b/myfile.py - 3 = /)
APPS_DIR = ROOT_DIR.path('funkwhale_api')

env = environ.Env()

try:
    env.read_env(ROOT_DIR.file('.env'))
except FileNotFoundError:
    pass

FUNKWHALE_HOSTNAME = None
FUNKWHALE_HOSTNAME_SUFFIX = env('FUNKWHALE_HOSTNAME_SUFFIX', default=None)
FUNKWHALE_HOSTNAME_PREFIX = env('FUNKWHALE_HOSTNAME_PREFIX', default=None)
if FUNKWHALE_HOSTNAME_PREFIX and FUNKWHALE_HOSTNAME_SUFFIX:
    # We're in traefik case, in development
    FUNKWHALE_HOSTNAME = '{}.{}'.format(
        FUNKWHALE_HOSTNAME_PREFIX, FUNKWHALE_HOSTNAME_SUFFIX)
    FUNKWHALE_PROTOCOL = env('FUNKWHALE_PROTOCOL', default='https')
else:
    try:
        FUNKWHALE_HOSTNAME = env('FUNKWHALE_HOSTNAME')
        FUNKWHALE_PROTOCOL = env('FUNKWHALE_PROTOCOL', default='https')
    except Exception:
        FUNKWHALE_URL = env('FUNKWHALE_URL')
        _parsed = urlsplit(FUNKWHALE_URL)
        FUNKWHALE_HOSTNAME = _parsed.netloc
        FUNKWHALE_PROTOCOL = _parsed.scheme

FUNKWHALE_URL = '{}://{}'.format(FUNKWHALE_PROTOCOL, FUNKWHALE_HOSTNAME)


# XXX: deprecated, see #186
FEDERATION_ENABLED = env.bool('FEDERATION_ENABLED', default=True)
FEDERATION_HOSTNAME = env('FEDERATION_HOSTNAME', default=FUNKWHALE_HOSTNAME)
# XXX: deprecated, see #186
FEDERATION_COLLECTION_PAGE_SIZE = env.int(
    'FEDERATION_COLLECTION_PAGE_SIZE', default=50
)
# XXX: deprecated, see #186
FEDERATION_MUSIC_NEEDS_APPROVAL = env.bool(
    'FEDERATION_MUSIC_NEEDS_APPROVAL', default=True
)
# XXX: deprecated, see #186
FEDERATION_ACTOR_FETCH_DELAY = env.int(
    'FEDERATION_ACTOR_FETCH_DELAY', default=60 * 12)
ALLOWED_HOSTS = env.list('DJANGO_ALLOWED_HOSTS')

# APP CONFIGURATION
# ------------------------------------------------------------------------------
DJANGO_APPS = (
    'channels',
    # Default Django apps:
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.sites',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'django.contrib.postgres',

    # Useful template tags:
    # 'django.contrib.humanize',

    # Admin
    'django.contrib.admin',
)
THIRD_PARTY_APPS = (
    # 'crispy_forms',  # Form layouts
    'allauth',  # registration
    'allauth.account',  # registration
    'allauth.socialaccount',  # registration
    'corsheaders',
    'rest_framework',
    'rest_framework.authtoken',
    'taggit',
    'rest_auth',
    'rest_auth.registration',
    'dynamic_preferences',
    'django_filters',
    'cacheops',
    'django_cleanup',
)


# Sentry
RAVEN_ENABLED = env.bool("RAVEN_ENABLED", default=False)
RAVEN_DSN = env("RAVEN_DSN", default='')

if RAVEN_ENABLED:
    RAVEN_CONFIG = {
        'dsn': RAVEN_DSN,
        # If you are using git, you can also automatically configure the
        # release based on the git info.
        'release': __version__,
    }
    THIRD_PARTY_APPS += (
        'raven.contrib.django.raven_compat',
    )


# Apps specific for this project go here.
LOCAL_APPS = (
    'funkwhale_api.common',
    'funkwhale_api.activity.apps.ActivityConfig',
    'funkwhale_api.users',  # custom users app
    # Your stuff: custom apps go here
    'funkwhale_api.instance',
    'funkwhale_api.music',
    'funkwhale_api.requests',
    'funkwhale_api.favorites',
    'funkwhale_api.federation',
    'funkwhale_api.radios',
    'funkwhale_api.history',
    'funkwhale_api.playlists',
    'funkwhale_api.providers.audiofile',
    'funkwhale_api.providers.youtube',
    'funkwhale_api.providers.acoustid',
    'funkwhale_api.subsonic',
)

# See: https://docs.djangoproject.com/en/dev/ref/settings/#installed-apps

INSTALLED_APPS = DJANGO_APPS + THIRD_PARTY_APPS + LOCAL_APPS

# MIDDLEWARE CONFIGURATION
# ------------------------------------------------------------------------------
MIDDLEWARE = (
    # Make sure djangosecure.middleware.SecurityMiddleware is listed first
    'django.contrib.sessions.middleware.SessionMiddleware',
    'corsheaders.middleware.CorsMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
)

# MIGRATIONS CONFIGURATION
# ------------------------------------------------------------------------------
MIGRATION_MODULES = {
    'sites': 'funkwhale_api.contrib.sites.migrations'
}

# DEBUG
# ------------------------------------------------------------------------------
# See: https://docs.djangoproject.com/en/dev/ref/settings/#debug
DEBUG = env.bool("DJANGO_DEBUG", False)

# FIXTURE CONFIGURATION
# ------------------------------------------------------------------------------
# See: https://docs.djangoproject.com/en/dev/ref/settings/#std:setting-FIXTURE_DIRS
FIXTURE_DIRS = (
    str(APPS_DIR.path('fixtures')),
)

# EMAIL CONFIGURATION
# ------------------------------------------------------------------------------

# EMAIL
# ------------------------------------------------------------------------------
DEFAULT_FROM_EMAIL = env(
    'DEFAULT_FROM_EMAIL',
    default='Funkwhale <noreply@{}>'.format(FUNKWHALE_HOSTNAME))

EMAIL_SUBJECT_PREFIX = env(
    "EMAIL_SUBJECT_PREFIX", default='[Funkwhale] ')
SERVER_EMAIL = env('SERVER_EMAIL', default=DEFAULT_FROM_EMAIL)


EMAIL_CONFIG = env.email_url(
    'EMAIL_CONFIG', default='consolemail://')

vars().update(EMAIL_CONFIG)

# DATABASE CONFIGURATION
# ------------------------------------------------------------------------------
# See: https://docs.djangoproject.com/en/dev/ref/settings/#databases
DATABASES = {
    # Raises ImproperlyConfigured exception if DATABASE_URL not in os.environ
    'default': env.db("DATABASE_URL"),
}
DATABASES['default']['ATOMIC_REQUESTS'] = True
#
# DATABASES = {
#     'default': {
#         'ENGINE': 'django.db.backends.sqlite3',
#         'NAME': 'db.sqlite3',
#     }
# }
# GENERAL CONFIGURATION
# ------------------------------------------------------------------------------
# Local time zone for this installation. Choices can be found here:
# http://en.wikipedia.org/wiki/List_of_tz_zones_by_name
# although not all choices may be available on all operating systems.
# In a Windows environment this must be set to your system time zone.
TIME_ZONE = 'UTC'

# See: https://docs.djangoproject.com/en/dev/ref/settings/#language-code
LANGUAGE_CODE = 'en-us'

# See: https://docs.djangoproject.com/en/dev/ref/settings/#site-id
SITE_ID = 1

# See: https://docs.djangoproject.com/en/dev/ref/settings/#use-i18n
USE_I18N = True

# See: https://docs.djangoproject.com/en/dev/ref/settings/#use-l10n
USE_L10N = True

# See: https://docs.djangoproject.com/en/dev/ref/settings/#use-tz
USE_TZ = True

# TEMPLATE CONFIGURATION
# ------------------------------------------------------------------------------
# See: https://docs.djangoproject.com/en/dev/ref/settings/#templates
TEMPLATES = [
    {
        # See: https://docs.djangoproject.com/en/dev/ref/settings/#std:setting-TEMPLATES-BACKEND
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        # See: https://docs.djangoproject.com/en/dev/ref/settings/#template-dirs
        'DIRS': [
            str(APPS_DIR.path('templates')),
        ],
        'OPTIONS': {
            # See: https://docs.djangoproject.com/en/dev/ref/settings/#template-debug
            'debug': DEBUG,
            # See: https://docs.djangoproject.com/en/dev/ref/settings/#template-loaders
            # https://docs.djangoproject.com/en/dev/ref/templates/api/#loader-types
            'loaders': [
                'django.template.loaders.filesystem.Loader',
                'django.template.loaders.app_directories.Loader',
            ],
            # See: https://docs.djangoproject.com/en/dev/ref/settings/#template-context-processors
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.template.context_processors.i18n',
                'django.template.context_processors.media',
                'django.template.context_processors.static',
                'django.template.context_processors.tz',
                'django.contrib.messages.context_processors.messages',
                # Your stuff: custom template context processors go here
            ],
        },
    },
]

# See: http://django-crispy-forms.readthedocs.org/en/latest/install.html#template-packs
CRISPY_TEMPLATE_PACK = 'bootstrap3'

# STATIC FILE CONFIGURATION
# ------------------------------------------------------------------------------
# See: https://docs.djangoproject.com/en/dev/ref/settings/#static-root
STATIC_ROOT = env("STATIC_ROOT", default=str(ROOT_DIR('staticfiles')))

# See: https://docs.djangoproject.com/en/dev/ref/settings/#static-url
STATIC_URL = env("STATIC_URL", default='/staticfiles/')
DEFAULT_FILE_STORAGE = 'funkwhale_api.common.storage.ASCIIFileSystemStorage'

# See: https://docs.djangoproject.com/en/dev/ref/contrib/staticfiles/#std:setting-STATICFILES_DIRS
STATICFILES_DIRS = (
    str(APPS_DIR.path('static')),
)

# See: https://docs.djangoproject.com/en/dev/ref/contrib/staticfiles/#staticfiles-finders
STATICFILES_FINDERS = (
    'django.contrib.staticfiles.finders.FileSystemFinder',
    'django.contrib.staticfiles.finders.AppDirectoriesFinder',
)

# MEDIA CONFIGURATION
# ------------------------------------------------------------------------------
# See: https://docs.djangoproject.com/en/dev/ref/settings/#media-root
MEDIA_ROOT = env("MEDIA_ROOT", default=str(APPS_DIR('media')))

# See: https://docs.djangoproject.com/en/dev/ref/settings/#media-url
MEDIA_URL = env("MEDIA_URL", default='/media/')

# URL Configuration
# ------------------------------------------------------------------------------
ROOT_URLCONF = 'config.urls'
# See: https://docs.djangoproject.com/en/dev/ref/settings/#wsgi-application
WSGI_APPLICATION = 'config.wsgi.application'
ASGI_APPLICATION = "config.routing.application"

# This ensures that Django will be able to detect a secure connection
SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')

# AUTHENTICATION CONFIGURATION
# ------------------------------------------------------------------------------
AUTHENTICATION_BACKENDS = (
    'django.contrib.auth.backends.ModelBackend',
    'allauth.account.auth_backends.AuthenticationBackend',
)
SESSION_COOKIE_HTTPONLY = False
# Some really nice defaults
ACCOUNT_AUTHENTICATION_METHOD = 'username_email'
ACCOUNT_EMAIL_REQUIRED = True
ACCOUNT_EMAIL_VERIFICATION = 'mandatory'

# Custom user app defaults
# Select the correct user model
AUTH_USER_MODEL = 'users.User'
LOGIN_REDIRECT_URL = 'users:redirect'
LOGIN_URL = 'account_login'

# SLUGLIFIER
AUTOSLUG_SLUGIFY_FUNCTION = 'slugify.slugify'

CACHE_DEFAULT = "redis://127.0.0.1:6379/0"
CACHES = {
    "default": env.cache_url('CACHE_URL', default=CACHE_DEFAULT)
}

CACHES["default"]["BACKEND"] = "django_redis.cache.RedisCache"
from urllib.parse import urlparse
cache_url = urlparse(CACHES['default']['LOCATION'])
CHANNEL_LAYERS = {
    "default": {
        "BACKEND": "channels_redis.core.RedisChannelLayer",
        "CONFIG": {
            "hosts": [(cache_url.hostname, cache_url.port)],
        },
    },
}

CACHES["default"]["OPTIONS"] = {
    "CLIENT_CLASS": "django_redis.client.DefaultClient",
    "IGNORE_EXCEPTIONS": True,  # mimics memcache behavior.
                                # http://niwinz.github.io/django-redis/latest/#_memcached_exceptions_behavior
}


########## CELERY
INSTALLED_APPS += ('funkwhale_api.taskapp.celery.CeleryConfig',)
CELERY_BROKER_URL = env(
    "CELERY_BROKER_URL", default=env('CACHE_URL', default=CACHE_DEFAULT))
########## END CELERY
# Location of root django.contrib.admin URL, use {% url 'admin:index' %}

# Your common stuff: Below this line define 3rd party library settings
CELERY_TASK_DEFAULT_RATE_LIMIT = 1
CELERY_TASK_TIME_LIMIT = 300
CELERYBEAT_SCHEDULE = {
    'federation.clean_music_cache': {
        'task': 'funkwhale_api.federation.tasks.clean_music_cache',
        'schedule': crontab(hour='*/2'),
        'options': {
            'expires': 60 * 2,
        },
    }
}

import datetime
JWT_AUTH = {
    'JWT_ALLOW_REFRESH': True,
    'JWT_EXPIRATION_DELTA': datetime.timedelta(days=7),
    'JWT_REFRESH_EXPIRATION_DELTA': datetime.timedelta(days=30),
    'JWT_AUTH_HEADER_PREFIX': 'JWT',
    'JWT_GET_USER_SECRET_KEY': lambda user: user.secret_key
}
OLD_PASSWORD_FIELD_ENABLED = True
ACCOUNT_ADAPTER = 'funkwhale_api.users.adapters.FunkwhaleAccountAdapter'
CORS_ORIGIN_ALLOW_ALL = True
# CORS_ORIGIN_WHITELIST = (
#     'localhost',
#     'funkwhale.localhost',
# )
CORS_ALLOW_CREDENTIALS = True

REST_FRAMEWORK = {
    'DEFAULT_PERMISSION_CLASSES': (
        'rest_framework.permissions.IsAuthenticated',
    ),
    'DEFAULT_PAGINATION_CLASS': 'funkwhale_api.common.pagination.FunkwhalePagination',
    'PAGE_SIZE': 25,
    'DEFAULT_PARSER_CLASSES': (
        'rest_framework.parsers.JSONParser',
        'rest_framework.parsers.FormParser',
        'rest_framework.parsers.MultiPartParser',
        'funkwhale_api.federation.parsers.ActivityParser',
    ),
    'DEFAULT_AUTHENTICATION_CLASSES': (
        'funkwhale_api.common.authentication.JSONWebTokenAuthenticationQS',
        'funkwhale_api.common.authentication.BearerTokenHeaderAuth',
        'rest_framework_jwt.authentication.JSONWebTokenAuthentication',
        'rest_framework.authentication.SessionAuthentication',
        'rest_framework.authentication.BasicAuthentication',
    ),
    'DEFAULT_FILTER_BACKENDS': (
        'rest_framework.filters.OrderingFilter',
        'django_filters.rest_framework.DjangoFilterBackend',
    ),
    'DEFAULT_RENDERER_CLASSES': (
        'rest_framework.renderers.JSONRenderer',
    )
}

BROWSABLE_API_ENABLED = env.bool('BROWSABLE_API_ENABLED', default=False)
if BROWSABLE_API_ENABLED:
    REST_FRAMEWORK['DEFAULT_RENDERER_CLASSES'] += (
        'rest_framework.renderers.BrowsableAPIRenderer',
    )

REST_AUTH_SERIALIZERS = {
    'PASSWORD_RESET_SERIALIZER': 'funkwhale_api.users.serializers.PasswordResetSerializer'  # noqa
}
REST_SESSION_LOGIN = False
REST_USE_JWT = True

ATOMIC_REQUESTS = False
USE_X_FORWARDED_HOST = True
USE_X_FORWARDED_PORT = True

# Wether we should use Apache, Nginx (or other) headers when serving audio files
# Default to Nginx
REVERSE_PROXY_TYPE = env('REVERSE_PROXY_TYPE', default='nginx')
assert REVERSE_PROXY_TYPE in ['apache2', 'nginx'], 'Unsupported REVERSE_PROXY_TYPE'

# Which path will be used to process the internal redirection
# **DO NOT** put a slash at the end
PROTECT_FILES_PATH = env('PROTECT_FILES_PATH', default='/_protected')


# use this setting to tweak for how long you want to cache
# musicbrainz results. (value is in seconds)
MUSICBRAINZ_CACHE_DURATION = env.int(
    'MUSICBRAINZ_CACHE_DURATION',
    default=300
)
CACHEOPS_REDIS = env('CACHE_URL', default=CACHE_DEFAULT)
CACHEOPS_ENABLED = env.bool('CACHEOPS_ENABLED', default=True)
CACHEOPS = {
    'music.artist': {'ops': 'all', 'timeout': 60 * 60},
    'music.album': {'ops': 'all', 'timeout': 60 * 60},
    'music.track': {'ops': 'all', 'timeout': 60 * 60},
    'music.trackfile': {'ops': 'all', 'timeout': 60 * 60},
    'taggit.tag': {'ops': 'all', 'timeout': 60 * 60},
}

# Custom Admin URL, use {% url 'admin:index' %}
ADMIN_URL = env('DJANGO_ADMIN_URL', default='^api/admin/')
CSRF_USE_SESSIONS = True

# Playlist settings
# XXX: deprecated, see #186
PLAYLISTS_MAX_TRACKS = env.int('PLAYLISTS_MAX_TRACKS', default=250)

ACCOUNT_USERNAME_BLACKLIST = [
    'funkwhale',
    'library',
    'test',
    'status',
    'root',
    'admin',
    'owner',
    'superuser',
    'staff',
    'service',
] + env.list('ACCOUNT_USERNAME_BLACKLIST', default=[])

EXTERNAL_REQUESTS_VERIFY_SSL = env.bool(
    'EXTERNAL_REQUESTS_VERIFY_SSL',
    default=True
)
# XXX: deprecated, see #186
API_AUTHENTICATION_REQUIRED = env.bool("API_AUTHENTICATION_REQUIRED", True)

MUSIC_DIRECTORY_PATH = env('MUSIC_DIRECTORY_PATH', default=None)
# on Docker setup, the music directory may not match the host path,
# and we need to know it for it to serve stuff properly
MUSIC_DIRECTORY_SERVE_PATH = env(
    'MUSIC_DIRECTORY_SERVE_PATH', default=MUSIC_DIRECTORY_PATH)