"""
Django settings for YtManager project.

Generated by 'django-admin startproject' using Django 1.11.11.

For more information on this file, see
https://docs.djangoproject.com/en/1.11/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/1.11/ref/settings/
"""

import os
import logging
from os.path import dirname as up

#
# Basic Django stuff
#
ALLOWED_HOSTS = ['*']
SESSION_COOKIE_AGE = 3600 * 30      # one month

# Application definition

INSTALLED_APPS = [
    'YtManagerApp.apps.YtManagerAppConfig',
    'crispy_forms',
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'django.contrib.humanize'
]

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',
]

ROOT_URLCONF = 'YtManager.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.template.context_processors.media',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

WSGI_APPLICATION = 'YtManager.wsgi.application'


# Password validation
# https://docs.djangoproject.com/en/1.11/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',
    },
]

LOGIN_REDIRECT_URL = '/'
LOGIN_URL = '/login'


# Internationalization
# https://docs.djangoproject.com/en/1.11/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/1.11/howto/static-files/

STATIC_URL = '/static/'
MEDIA_URL = '/media/'


# Misc Django stuff

CRISPY_TEMPLATE_PACK = 'bootstrap4'

LOG_FORMAT = '%(asctime)s|%(process)d|%(thread)d|%(name)s|%(filename)s|%(lineno)d|%(levelname)s|%(message)s'

#
# Directories
#

# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
PROJECT_ROOT = up(up(os.path.dirname(__file__)))            # Project root
BASE_DIR = os.path.join(PROJECT_ROOT, "app")                # Base dir of the application
CONFIG_DIR = os.path.join(PROJECT_ROOT, "config")
DATA_DIR = os.path.join(PROJECT_ROOT, "data")
STATIC_ROOT = os.path.join(PROJECT_ROOT, "static")


_DEFAULT_CONFIG_DIR = os.path.join(BASE_DIR, "default")
_DEFAULT_CONFIG_FILE = os.path.join(CONFIG_DIR, 'config.ini')
_DEFAULT_LOG_FILE = os.path.join(DATA_DIR, 'log.log')
_DEFAULT_MEDIA_ROOT = os.path.join(DATA_DIR, 'media')

DEFAULTS_FILE = os.path.join(_DEFAULT_CONFIG_DIR, 'defaults.ini')
CONFIG_FILE = os.getenv('YTSM_CONFIG_FILE', _DEFAULT_CONFIG_FILE)

#
# Defaults
#
_DEFAULT_DEBUG = False

_DEFAULT_SECRET_KEY = '^zv8@i2h!ko2lo=%ivq(9e#x=%q*i^^)6#4@(juzdx%&0c+9a0'
_DEFAULT_YOUTUBE_API_KEY = 'AIzaSyBabzE4Bup77WexdLMa9rN9z-wJidEfNX8'

_DEFAULT_DATABASE = {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join(DATA_DIR, 'ytmanager.db'),
        'HOST': None,
        'USER': None,
        'PASSWORD': None,
        'PORT': None,
    }

_SCHEDULER_SYNC_SCHEDULE = '5 * * * *'
_DEFAULT_SCHEDULER_CONCURRENCY = 1


#
# Load globals from config.ini
#
def load_config_ini():
    from configparser import ConfigParser
    from YtManagerApp.utils.extended_interpolation_with_env import ExtendedInterpolatorWithEnv
    import dj_database_url

    cfg = ConfigParser(allow_no_value=True, interpolation=ExtendedInterpolatorWithEnv())
    read_ok = cfg.read([DEFAULTS_FILE, CONFIG_FILE])

    if DEFAULTS_FILE not in read_ok:
        print('Failed to read file ' + DEFAULTS_FILE)
        raise Exception('Cannot read file ' + DEFAULTS_FILE)
    if CONFIG_FILE not in read_ok:
        print('Failed to read file ' + CONFIG_FILE)
        raise Exception('Cannot read file ' + CONFIG_FILE)

    # Debug
    global DEBUG
    DEBUG = cfg.getboolean('global', 'Debug', fallback=_DEFAULT_DEBUG)

    # Media root, which is where thumbnails are stored
    global MEDIA_ROOT
    MEDIA_ROOT = cfg.get('global', 'MediaRoot', fallback=_DEFAULT_MEDIA_ROOT)

    # Keys - secret key, youtube API key
    # SECURITY WARNING: keep the secret key used in production secret!
    global SECRET_KEY, YOUTUBE_API_KEY
    SECRET_KEY = cfg.get('global', 'SecretKey', fallback=_DEFAULT_SECRET_KEY)
    YOUTUBE_API_KEY = cfg.get('global', 'YoutubeApiKey', fallback=_DEFAULT_YOUTUBE_API_KEY)

    # Database
    global DATABASES
    DATABASES = {
        'default': _DEFAULT_DATABASE
    }

    if cfg.has_option('global', 'DatabaseURL'):
        DATABASES['default'] = dj_database_url.parse(cfg.get('global', 'DatabaseURL'), conn_max_age=600)

    else:
        DATABASES['default'] = {
            'ENGINE': cfg.get('global', 'DatabaseEngine', fallback=_DEFAULT_DATABASE['ENGINE']),
            'NAME': cfg.get('global', 'DatabaseName', fallback=_DEFAULT_DATABASE['NAME']),
            'HOST': cfg.get('global', 'DatabaseHost', fallback=_DEFAULT_DATABASE['HOST']),
            'USER': cfg.get('global', 'DatabaseUser', fallback=_DEFAULT_DATABASE['USER']),
            'PASSWORD': cfg.get('global', 'DatabasePassword', fallback=_DEFAULT_DATABASE['PASSWORD']),
            'PORT': cfg.get('global', 'DatabasePort', fallback=_DEFAULT_DATABASE['PORT']),
        }

    # Log settings
    global LOG_LEVEL, LOG_FILE
    log_level_str = cfg.get('global', 'LogLevel', fallback='INFO')

    try:
        LOG_LEVEL = getattr(logging, log_level_str)
    except AttributeError:
        print("Invalid log level " + LOG_LEVEL)
        LOG_LEVEL = logging.INFO

    LOG_FILE = cfg.get('global', 'LogFile', fallback=_DEFAULT_LOG_FILE)

    # Scheduler settings
    global SCHEDULER_SYNC_SCHEDULE, SCHEDULER_CONCURRENCY
    SCHEDULER_SYNC_SCHEDULE = cfg.get('global', 'SynchronizationSchedule', fallback=_SCHEDULER_SYNC_SCHEDULE)
    SCHEDULER_CONCURRENCY = cfg.getint('global', 'SchedulerConcurrency', fallback=_DEFAULT_SCHEDULER_CONCURRENCY)


load_config_ini()