import os
from pathlib import Path
from datetime import timedelta

BASE_DIR = Path(__file__).resolve().parent.parent

SECRET_KEY = os.environ.get(
    "DJANGO_SECRET_KEY",
    "django-insecure-change-me-in-production",
)

DEBUG = os.environ.get("DJANGO_DEBUG", "True").lower() in ("true", "1", "yes")

ALLOWED_HOSTS: list[str] = ["*"]

INSTALLED_APPS = [
    "django.contrib.admin",
    "django.contrib.auth",
    "django.contrib.contenttypes",
    "django.contrib.sessions",
    "django.contrib.messages",
    "django.contrib.staticfiles",
    "rest_framework",
    "accounts",
]

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 = "project.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 = "project.wsgi.application"

# Parse DATABASE_URL
_database_url = os.environ.get(
    "DATABASE_URL",
    "postgres://jobtracker:***@localhost:5432/jobtracker",
)

# postgres://user:***@host:port/dbname → django settings dict
_db_parts = _database_url.replace("postgres://", "").split("@")
_credentials, _host_db = _db_parts[0], _db_parts[1]
_db_user, _db_pass = _credentials.split(":")
_host_port, _db_name = _host_db.split("/")
_db_host = _host_port.split(":")[0]
_db_port = _host_port.split(":")[1] if ":" in _host_port else "5432"

DATABASES = {
    "default": {
        "ENGINE": "django.db.backends.postgresql",
        "NAME": _db_name,
        "USER": _db_user,
        "PASSWORD": _db_pass,
        "HOST": _db_host,
        "PORT": _db_port,
    }
}

AUTH_USER_MODEL = "accounts.User"

REST_FRAMEWORK = {
    "DEFAULT_AUTHENTICATION_CLASSES": (
        "rest_framework_simplejwt.authentication.JWTAuthentication",
    ),
    "DEFAULT_PERMISSION_CLASSES": (
        "rest_framework.permissions.AllowAny",
    ),
    "DEFAULT_RENDERER_CLASSES": (
        "rest_framework.renderers.JSONRenderer",
    ),
}

SIMPLE_JWT = {
    "ACCESS_TOKEN_LIFETIME": timedelta(hours=24),
    "REFRESH_TOKEN_LIFETIME": timedelta(days=30),
    "AUTH_HEADER_TYPES": ("Bearer",),
}

LANGUAGE_CODE = "en-us"
TIME_ZONE = "UTC"
USE_I18N = True
USE_TZ = True

STATIC_URL = "static/"

DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"