"""
Django settings for FaceID System.
Reads secrets from .env using python-dotenv.
"""

import os
from pathlib import Path

from dotenv import load_dotenv

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

# Load environment variables from .env file
load_dotenv(BASE_DIR / ".env")
load_dotenv(BASE_DIR.parent / ".env")

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = os.getenv("SECRET_KEY", "django-insecure-change-this-to-a-real-secret-key")

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True #os.getenv("DEBUG", "False").lower() in ("true", "1", "yes")

ALLOWED_HOSTS = os.getenv("ALLOWED_HOSTS", "attendance-api.talchi.ai,attendance.talchi.ai,localhost,127.0.0.1").split(",")

# Application definition
INSTALLED_APPS = [
    "django.contrib.admin",
    "django.contrib.auth",
    "django.contrib.contenttypes",
    "django.contrib.sessions",
    "django.contrib.messages",
    "django.contrib.staticfiles",
    # Third-party
    "rest_framework",
    "corsheaders",
    # Local
    "faces",
]

MIDDLEWARE = [
    "django.middleware.security.SecurityMiddleware",
    "corsheaders.middleware.CorsMiddleware",
    "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 = "config.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.contrib.auth.context_processors.auth",
                "django.contrib.messages.context_processors.messages",
            ],
        },
    },
]

WSGI_APPLICATION = "config.wsgi.application"

# Database — PostgreSQL with pgvector
DATABASES = {
    "default": {
        "ENGINE": "django.db.backends.postgresql",
        "NAME": os.getenv("DB_NAME", "attendance_db"),
        "USER": os.getenv("DB_USER", "attendance_admin"),
        "PASSWORD": os.getenv("DB_PASSWORD", "Attenance@2026"),
        "HOST": os.getenv("DB_HOST", "localhost"),
        "PORT": os.getenv("DB_PORT", "5432"),
    }
}

# Password validation
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
LANGUAGE_CODE = "en-us"
TIME_ZONE = "UTC"
USE_I18N = True
USE_TZ = True

# Static files
STATIC_URL = "static/"
STATIC_ROOT = BASE_DIR / "staticfiles"

# Media files
MEDIA_URL = "/media/"
MEDIA_ROOT = BASE_DIR / "media"

# File upload limits
MAX_UPLOAD_SIZE = 10 * 1024 * 1024  # 10 MB
FILE_UPLOAD_MAX_MEMORY_SIZE = 10 * 1024 * 1024  # 10 MB

# Default primary key field type
DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"

# Django REST Framework
REST_FRAMEWORK = {
    "DEFAULT_RENDERER_CLASSES": [
        "rest_framework.renderers.JSONRenderer",
    ],
    "DEFAULT_PARSER_CLASSES": [
        "rest_framework.parsers.JSONParser",
        "rest_framework.parsers.MultiPartParser",
        "rest_framework.parsers.FormParser",
    ],
}

# CORS Configuration
CORS_ALLOWED_ORIGINS = [
    "http://localhost:5173",
    "http://localhost:3000",
]

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

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