import os
from pathlib import Path

from dotenv import load_dotenv

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

load_dotenv(BASE_DIR / ".env")


# --------------------------------------------------
# Security
# --------------------------------------------------

SECRET_KEY = os.getenv(
    "DJANGO_SECRET_KEY",
    "django-insecure-development-only-key",
)

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

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

CSRF_TRUSTED_ORIGINS = [
    origin.strip()
    for origin in os.getenv(
        "DJANGO_CSRF_TRUSTED_ORIGINS",
        "",
    ).split(",")
    if origin.strip()
]


# --------------------------------------------------
# Applications
# --------------------------------------------------

INSTALLED_APPS = [
    "nested_admin",
    "django.contrib.admin",
    "django.contrib.auth",
    "django.contrib.contenttypes",
    "django.contrib.sessions",
    "django.contrib.messages",
    "django.contrib.staticfiles",
    "portfolio",
]


MIDDLEWARE = [
    "django.middleware.security.SecurityMiddleware",
    "whitenoise.middleware.WhiteNoiseMiddleware",
    "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": [BASE_DIR / "templates"],
        "APP_DIRS": True,
        "OPTIONS": {
            "context_processors": [
                "django.template.context_processors.request",
                "django.contrib.auth.context_processors.auth",
                "django.contrib.messages.context_processors.messages",
                "portfolio.context_processors.archive_site_context",
            ],
        },
    },
]


WSGI_APPLICATION = "core.wsgi.application"


# --------------------------------------------------
# Database
# --------------------------------------------------

DATABASE_ENGINE = os.getenv("DATABASE_ENGINE", "mysql").lower()


if DATABASE_ENGINE == "sqlite":
    DATABASES = {
        "default": {
            "ENGINE": "django.db.backends.sqlite3",
            "NAME": BASE_DIR
            / os.getenv(
                "SQLITE_DATABASE_NAME",
                "db.sqlite3",
            ),
            "OPTIONS": {
                "timeout": 20,
            },
        }
    }

elif DATABASE_ENGINE == "mysql":
    DATABASES = {
        "default": {
            "ENGINE": "django.db.backends.mysql",
            "NAME": os.getenv(
                "MYSQL_DATABASE",
                "valentinos_archive",
            ),
            "USER": os.getenv(
                "MYSQL_USER",
                "root",
            ),
            "PASSWORD": os.getenv(
                "MYSQL_PASSWORD",
                "",
            ),
            "HOST": os.getenv(
                "MYSQL_HOST",
                "127.0.0.1",
            ),
            "PORT": os.getenv(
                "MYSQL_PORT",
                "3306",
            ),
            "OPTIONS": {
                "charset": "utf8mb4",
            },
        }
    }

else:
    raise RuntimeError(f"Unsupported DATABASE_ENGINE: {DATABASE_ENGINE}")


# --------------------------------------------------
# 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 = "Europe/Nicosia"

USE_I18N = True
USE_TZ = True


# --------------------------------------------------
# Static and media files
# --------------------------------------------------

STATIC_URL = "/static/"
STATICFILES_DIRS = [BASE_DIR / "static"]
STATIC_ROOT = BASE_DIR / "staticfiles"

MEDIA_URL = "/media/"
MEDIA_ROOT = BASE_DIR / "media"


# --------------------------------------------------
# HTTPS and proxy
# --------------------------------------------------

SECURE_PROXY_SSL_HEADER = (
    "HTTP_X_FORWARDED_PROTO",
    "https",
)

SECURE_SSL_REDIRECT = not DEBUG
SESSION_COOKIE_SECURE = not DEBUG
CSRF_COOKIE_SECURE = not DEBUG