"""
Django settings for core project.
"""

import os
from pathlib import Path
from datetime import timedelta
from dotenv import load_dotenv

# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent

load_dotenv(BASE_DIR / '.env')

SECRET_KEY = os.getenv(
    'DJANGO_SECRET_KEY',
    'django-insecure-!228(8gy#3a7l-@_^g1s4bipj&@*+_415+ulx0^-9jw(%ksdvy',
)

DEBUG = os.getenv('DJANGO_DEBUG', 'True').lower() in ('1', 'true', 'yes', 'on')

# Custom user model
AUTH_USER_MODEL = 'users.CustomUser'

ALLOWED_HOSTS = [
    host.strip()
    for host in os.getenv('DJANGO_ALLOWED_HOSTS', '127.0.0.1,localhost').split(',')
    if host.strip()
]

# Application definition
INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    # plugins
    'fleet',
    'corsheaders',
    'django_filters',
    'rest_framework_simplejwt',
    'rest_framework',
    # Aplikacije
    'users',
    'kupci',
    'operations',
    'kalendar',
]

MIDDLEWARE = [
    'corsheaders.middleware.CorsMiddleware', # Mora biti prvi!
    '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 = 'core.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

WSGI_APPLICATION = 'core.wsgi.application'

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': BASE_DIR / 'db.sqlite3',
    }
}

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' },
]

LANGUAGE_CODE = 'en-us'
TIME_ZONE = 'Europe/Zagreb'
USE_I18N = True
USE_TZ = True

STATIC_URL = 'static/'
STATIC_ROOT = os.path.join(BASE_DIR, 'staticfiles')

if DEBUG:
    DEFAULT_PERMISSION_CLASSES = [ 'rest_framework.permissions.AllowAny' ]
else:
    DEFAULT_PERMISSION_CLASSES = [ 'rest_framework.permissions.IsAuthenticated' ]

REST_FRAMEWORK = {
    'DEFAULT_FILTER_BACKENDS': [
        'django_filters.rest_framework.DjangoFilterBackend'
    ],
    'DEFAULT_AUTHENTICATION_CLASSES': (
        'rest_framework_simplejwt.authentication.JWTAuthentication',
    ),
    'DEFAULT_PERMISSION_CLASSES': DEFAULT_PERMISSION_CLASSES
}

SIMPLE_JWT = {
    'ACCESS_TOKEN_LIFETIME': timedelta(minutes=60),
    'REFRESH_TOKEN_LIFETIME': timedelta(days=30),
    'AUTH_HEADER_TYPES': ('Bearer',),
}

MEDIA_URL = '/media/'
MEDIA_ROOT = os.path.join(BASE_DIR, 'media')


# 2. CSRF_TRUSTED_ORIGINS
# Primjer: https://app.tvojadomena.hr,https://api.tvojadomena.hr
CSRF_TRUSTED_ORIGINS = [
    origin.strip()
    for origin in os.getenv('DJANGO_CSRF_TRUSTED_ORIGINS', 'http://127.0.0.1:4321,http://localhost:4321').split(',')
    if origin.strip()
]

# CORS POSTAVKE - POPRAVLJENI ZAREZI I FORMALNI ORIGINI
if DEBUG:
    CORS_ALLOW_ALL_ORIGINS = True
else:
    CORS_ALLOW_ALL_ORIGINS = False
    CORS_ALLOWED_ORIGINS = [
        host.strip()
        for host in os.getenv('DJANGO_CORS_ALLOWED_ORIGINS', '').split(',')
        if host.strip()
    ]

CORS_ALLOW_METHODS = [
    "DELETE",
    "GET",
    "OPTIONS",
    "PATCH",
    "POST",
    "PUT",
]

CORS_ALLOW_HEADERS = [
    'accept',
    'accept-encoding',
    'authorization',
    'content-type',
    'dnt',
    'origin',
    'user-agent',
    'x-csrftoken',
    'x-requested-with',
    'access-control-request-private-network',
]

# Ako preglednik pošalje PNA preflight zahtjev sa lokalne mreže, 
# corsheaders će ga s ovim u potpunosti odobriti bez redirecta
CORS_ALLOW_PRIVATE_NETWORK = True
CORS_PREFLIGHT_MAX_AGE = 86400


# Celery Postavke
CELERY_BROKER_URL = os.environ.get("CELERY_BROKER_URL", "redis://localhost:6379/0")
CELERY_RESULT_BACKEND = os.environ.get("CELERY_BROKER_URL", "redis://localhost:6379/0")
CELERY_ACCEPT_CONTENT = ['json']
CELERY_TASK_SERIALIZER = 'json'
CELERY_RESULT_SERIALIZER = 'json'
CELERY_TIMEZONE = 'Europe/Zagreb'