config/settings.py

"""
Django settings for config project.

Generated by 'django-admin startproject' using Django 5.2.15.

For more information on this file, see
https://docs.djangoproject.com/en/5.2/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/5.2/ref/settings/
"""

import os
from pathlib import Path
from dotenv import load_dotenv
import dj_database_url

# 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/5.2/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = os.getenv('SECRET_KEY', 'django-insecure-e(r31o54hfnysa&0=99)la3kyvac3j)4e_hr-vj(*oj(d)3kn1')

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = os.getenv('DEBUG', 'False') == 'True'

ALLOWED_HOSTS = ['*']

# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'rest_framework',
    'corsheaders',
    'rest_framework_simplejwt',
    'auth_api',
    'interview',
]

AUTH_USER_MODEL = 'auth_api.User'

MIDDLEWARE = [
    'config.middleware.ForceCredentialsMiddleware',
    'corsheaders.middleware.CorsMiddleware',
    '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',
]

# Security Headers (Production)
if not DEBUG:
    SECURE_BROWSER_XSS_FILTER = True
    SECURE_CONTENT_TYPE_NOSNIFF = True
    X_FRAME_OPTIONS = 'DENY'
    CSRF_COOKIE_SECURE = True
    SESSION_COOKIE_SECURE = True
else:
    X_FRAME_OPTIONS = 'SAMEORIGIN'

# CSRF configuration for decoupled frontends
CSRF_COOKIE_SAMESITE = 'None' if not DEBUG else 'Lax'
CSRF_COOKIE_HTTPONLY = False  # Must be false so frontend JS (Axios) can read it
CSRF_TRUSTED_ORIGINS = [o.strip() for o in os.getenv(
    'CORS_ALLOWED_ORIGINS',
    'http://localhost:5173,http://localhost:5174,http://localhost:5175,http://127.0.0.1:5173,http://127.0.0.1:5174,http://127.0.0.1:5175,https://franciscoquezada.vercel.app'
).split(',') if o.strip()]

# CORS: restrict to known origins. Set CORS_ALLOWED_ORIGINS in .env for production.
# Default allows local dev ports for Dashboard and Frontend.
CORS_ALLOW_CREDENTIALS = True  # Required for cross-origin cookie-based auth
_raw_cors = os.getenv(
    'CORS_ALLOWED_ORIGINS',
    'http://localhost:5173,http://localhost:5174,http://localhost:5175,http://127.0.0.1:5173,http://127.0.0.1:5174,http://127.0.0.1:5175,https://franciscoquezada.vercel.app'
)
CORS_ALLOWED_ORIGINS = [o.strip() for o in _raw_cors.split(',') if o.strip()]
CORS_ALLOWED_ORIGINS.extend([
    "https://franciscoquezada.vercel.app",
    "http://localhost:5175",
    "http://localhost:5174",
    "http://localhost:5173"
])

CSRF_TRUSTED_ORIGINS.extend([
    "https://franciscoquezada.vercel.app",
    "http://localhost:5175",
    "http://localhost:5174",
    "http://localhost:5173"
])

CORS_ALLOWED_ORIGIN_REGEXES = [
    r"^https://.*$",
    r"^http://localhost:.*$",
    r"^http://127\.0\.0\.1:.*$",
]

ROOT_URLCONF = 'config.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 = 'config.wsgi.application'


# Database
# https://docs.djangoproject.com/en/5.2/ref/settings/#databases

DATABASES = {
    'default': dj_database_url.config(
        default=os.getenv('DATABASE_URL', f'sqlite:///{BASE_DIR / "db.sqlite3"}')
    )
}

REST_FRAMEWORK = {
    'DEFAULT_AUTHENTICATION_CLASSES': (
        'auth_api.authentication.CookieJWTAuthentication',
    ),
    # All endpoints require authentication by default.
    # Public endpoints must explicitly override with @permission_classes([AllowAny]).
    'DEFAULT_PERMISSION_CLASSES': (
        'rest_framework.permissions.IsAuthenticated',
    ),
    'DEFAULT_THROTTLE_CLASSES': [
        'rest_framework.throttling.AnonRateThrottle',
        'rest_framework.throttling.UserRateThrottle'
    ],
    'DEFAULT_THROTTLE_RATES': {
        'anon': '100/day',
        'user': '1000/day',
        'login': '10/minute'
    },
}

from datetime import timedelta
SIMPLE_JWT = {
    'ACCESS_TOKEN_LIFETIME': timedelta(minutes=30),
    'REFRESH_TOKEN_LIFETIME': timedelta(days=7),
    'ROTATE_REFRESH_TOKENS': True,
    'BLACKLIST_AFTER_ROTATION': False,
    'AUTH_COOKIE': 'access_token',
    'AUTH_COOKIE_REFRESH': 'refresh_token',
    'AUTH_COOKIE_SECURE': not DEBUG,    # True in production (HTTPS)
    'AUTH_COOKIE_HTTP_ONLY': True,
    'AUTH_COOKIE_SAMESITE': 'None' if not DEBUG else 'Lax',
}


# Password validation
# https://docs.djangoproject.com/en/5.2/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/5.2/topics/i18n/

LANGUAGE_CODE = 'es'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/5.2/howto/static-files/

STATIC_URL = 'static/'

# Default primary key field type
# https://docs.djangoproject.com/en/5.2/ref/settings/#default-auto-field

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

# Media files
MEDIA_URL = '/api/media/'
MEDIA_ROOT = os.path.join(BASE_DIR, 'media')

# Interview video paths
INTERVIEW_VIDEOS_DIR = os.path.join(BASE_DIR, 'static', 'videos')
INTERVIEW_LOOP_VIDEO = os.path.join(BASE_DIR, 'static', 'loop_pingpong.mp4')
INTERVIEW_BIENVENIDA_VIDEO = os.path.join(BASE_DIR, 'static', 'final_bienvenida.mp4')
INTERVIEW_DESPEDIDA_VIDEO = os.path.join(BASE_DIR, 'static', 'final_despedida.mp4')