"""
Django settings for healthchecks project.

For the full list of settings and their values, see
https://docs.djangoproject.com/en/2.1/ref/settings
"""

import os
import warnings

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


def envbool(s, default):
    v = os.getenv(s, default=default)
    if v not in ("", "True", "False"):
        msg = "Unexpected value %s=%s, use 'True' or 'False'" % (s, v)
        raise Exception(msg)
    return v == "True"


def envint(s, default):
    v = os.getenv(s, default)
    if v == "None":
        return None

    return int(v)


SECRET_KEY = os.getenv("SECRET_KEY", "---")
DEBUG = envbool("DEBUG", "True")
ALLOWED_HOSTS = os.getenv("ALLOWED_HOSTS", "*").split(",")
DEFAULT_FROM_EMAIL = os.getenv("DEFAULT_FROM_EMAIL", "healthchecks@example.org")
USE_PAYMENTS = envbool("DEBUG", "False")
REGISTRATION_OPEN = envbool("DEBUG", "True")


INSTALLED_APPS = (
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.humanize',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'compressor',

    'hc.accounts',
    'hc.api',
    'hc.front',
    'hc.payments'
)

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',
    'hc.accounts.middleware.TeamAccessMiddleware',
)

AUTHENTICATION_BACKENDS = (
    'hc.accounts.backends.EmailBackend',
    'hc.accounts.backends.ProfileBackend'
)

ROOT_URLCONF = 'hc.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [os.path.join(BASE_DIR, 'templates')],
        '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',
                'hc.payments.context_processors.payments'
            ],
        },
    },
]

WSGI_APPLICATION = 'hc.wsgi.application'
TEST_RUNNER = 'hc.api.tests.CustomRunner'


# Default database engine is SQLite. So one can just check out code,
# install requirements.txt and do manage.py runserver and it works
DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': '{0}/hc.sqlite'.format(BASE_DIR),
    }
}

# You can switch database engine to postgres or mysql using environment
# variable 'DB'. Travis CI does this.
if os.getenv("DB") == "postgres":
    DATABASES = {
        'default': {
            'ENGINE': 'django.db.backends.postgresql',
            'HOST': os.getenv("DB_HOST", ""),
            'PORT': os.getenv("DB_PORT", ""),
            'NAME': os.getenv("DB_NAME", "hc"),
            'USER': os.getenv("DB_USER", "postgres"),
            'PASSWORD': os.getenv("DB_PASSWORD", ""),
            'CONN_MAX_AGE': envint("DB_CONN_MAX_AGE", "0"),
            'TEST': {'CHARSET': 'UTF8'},
            'OPTIONS': {
                "sslmode": os.getenv("DB_SSLMODE", "prefer"),
                "target_session_attrs": os.getenv("DB_TARGET_SESSION_ATTRS", "read-write")
            }
        }
    }

if os.getenv("DB") == "mysql":
    DATABASES = {
        'default': {
            'ENGINE': 'django.db.backends.mysql',
            'NAME': os.getenv("DB_NAME", "hc"),
            'USER': os.getenv("DB_USER", "root"),
            'PASSWORD': os.getenv("DB_PASSWORD", ""),
            'TEST': {'CHARSET': 'UTF8'}
        }
    }

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True

SITE_ROOT = os.getenv("SITE_ROOT", "http://localhost:8000")
SITE_NAME = os.getenv("SITE_NAME", "Mychecks")
MASTER_BADGE_LABEL = os.getenv("MASTER_BADGE_LABEL", SITE_NAME)
PING_ENDPOINT = os.getenv("PING_ENDPOINT", SITE_ROOT + "/ping/")
PING_EMAIL_DOMAIN = os.getenv("PING_EMAIL_DOMAIN", "localhost")
STATIC_URL = '/static/'
STATICFILES_DIRS = [os.path.join(BASE_DIR, "static")]
STATIC_ROOT = os.path.join(BASE_DIR, 'static-collected')
STATICFILES_FINDERS = (
    'django.contrib.staticfiles.finders.FileSystemFinder',
    'django.contrib.staticfiles.finders.AppDirectoriesFinder',
    'compressor.finders.CompressorFinder',
)
COMPRESS_OFFLINE = True
COMPRESS_CSS_HASHING_METHOD = "content"

# Discord integration
DISCORD_CLIENT_ID = os.getenv("DISCORD_CLIENT_ID")
DISCORD_CLIENT_SECRET = os.getenv("DISCORD_CLIENT_SECRET")

# Slack integration
SLACK_CLIENT_ID = os.getenv("SLACK_CLIENT_ID")
SLACK_CLIENT_SECRET = os.getenv("SLACK_CLIENT_SECRET")

# Pushover integration
PUSHOVER_API_TOKEN = os.getenv("PUSHOVER_API_TOKEN")
PUSHOVER_SUBSCRIPTION_URL = os.getenv("PUSHOVER_SUBSCRIPTION_URL")
PUSHOVER_EMERGENCY_RETRY_DELAY = int(os.getenv("PUSHOVER_EMERGENCY_RETRY_DELAY", "300"))
PUSHOVER_EMERGENCY_EXPIRATION = int(os.getenv("PUSHOVER_EMERGENCY_EXPIRATION", "86400"))

# Pushbullet integration
PUSHBULLET_CLIENT_ID = os.getenv("PUSHBULLET_CLIENT_ID")
PUSHBULLET_CLIENT_SECRET = os.getenv("PUSHBULLET_CLIENT_SECRET")

# Telegram integration -- override in local_settings.py
TELEGRAM_BOT_NAME = os.getenv("TELEGRAM_BOT_NAME", "ExampleBot")
TELEGRAM_TOKEN = os.getenv("TELEGRAM_TOKEN")

# SMS (Twilio) integration
TWILIO_ACCOUNT = os.getenv("TWILIO_ACCOUNT")
TWILIO_AUTH = os.getenv("TWILIO_AUTH")
TWILIO_FROM = os.getenv("TWILIO_FROM")

# PagerDuty
PD_VENDOR_KEY = os.getenv("PD_VENDOR_KEY")

# Trello
TRELLO_APP_KEY = os.getenv("TRELLO_APP_KEY")

if os.path.exists(os.path.join(BASE_DIR, "hc/local_settings.py")):
    from .local_settings import *
else:
    warnings.warn("local_settings.py not found, using defaults")