"""
Django settings for core project.

Generated by 'django-admin startproject' using Django 6.0.5.

For more information on this file, see
https://docs.djangoproject.com/en/6.0/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/6.0/ref/settings/
"""

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')

# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/6.0/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = os.getenv(
    'DJANGO_SECRET_KEY',
    'django-insecure-!228(8gy#3a7l-@_^g1s4bipj&@*+_415+ulx0^-9jw(%ksdvy',
)

# SECURITY WARNING: don't run with debug turned on in production!
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'


# Database
# https://docs.djangoproject.com/en/6.0/ref/settings/#databases

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


# Password validation
# https://docs.djangoproject.com/en/6.0/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/6.0/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'Europe/Zagreb'

USE_I18N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/6.0/howto/static-files/

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


# Automatski koristi filtriranje na svim API endpointima koji podržavaju filtriranje

if DEBUG:
    # Razvojni način: Svatko može čitati i pisati bez tokena
    DEFAULT_PERMISSION_CLASSES = [
        'rest_framework.permissions.AllowAny',
    ]
else:
    # Produkcijski način: Pristup samo uz ispravan JWT token
    DEFAULT_PERMISSION_CLASSES = [
        'rest_framework.permissions.IsAuthenticated',
    ]

REST_FRAMEWORK = {
    'DEFAULT_FILTER_BACKENDS': [
        'django_filters.rest_framework.DjangoFilterBackend'
    ],
    # JWT Autentikacija
    'DEFAULT_AUTHENTICATION_CLASSES': (
        'rest_framework_simplejwt.authentication.JWTAuthentication',
    ),
    # Postavi da su po defaultu svi API-ji zaključani (samo za prijavljene)
    'DEFAULT_PERMISSION_CLASSES': DEFAULT_PERMISSION_CLASSES
}


# Podesiti koliko dugo vrijede JWT tokeni (npr. 1 sat za pristup, 30 dana za refresh)
SIMPLE_JWT = {
    'ACCESS_TOKEN_LIFETIME': timedelta(minutes=60),
    'REFRESH_TOKEN_LIFETIME': timedelta(days=30),
    'AUTH_HEADER_TYPES': ('Bearer',),
}

# Media files (npr. slike vozila)

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


# CORS postavke - dozvoli frontend aplikaciji da komunicira s backendom

if DEBUG:
    CORS_ALLOW_ALL_ORIGINS = True
else:
    CORS_ALLOWED_ORIGINS = [
        "http://localhost:4321", # Ovo je adresa na kojoj će Astro frontend biti dostupan
        "http://127.0.0.1:4321",
    ]
CORS_ALLOW_METHODS = [
    "DELETE",
    "GET",
    "OPTIONS",
    "PATCH",
    "POST",
    "PUT",
]

CORS_ALLOW_HEADERS = [
    "accept",
    "authorization",
    "content-type",
    "user-agent",
    "x-csrftoken",
    "x-requested-with",
]