"""
Django settings for django_backend project.

Generated by 'django-admin startproject' using Django 4.2.30.

For more information on this file, see
https://docs.djangoproject.com/en/4.2/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/4.2/ref/settings/
"""

import os
from pathlib import Path

import dj_database_url
import pymysql
from corsheaders.defaults import default_headers
from dotenv import load_dotenv

pymysql.install_as_MySQLdb()

BASE_DIR = Path(__file__).resolve().parent.parent
load_dotenv(BASE_DIR.parent / ".env")


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/4.2/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = os.getenv("DJANGO_SECRET_KEY", "django-insecure-local-only")

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

ALLOWED_HOSTS = [h.strip() for h in os.getenv("DJANGO_ALLOWED_HOSTS", "*").split(",") if h.strip()]


# Application definition

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

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    "integrations.middleware.ClientContextMiddleware",
    "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 = 'django_backend.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 = 'django_backend.wsgi.application'


# Database
# https://docs.djangoproject.com/en/4.2/ref/settings/#databases

raw_database_url = os.getenv("DATABASE_URL", f"sqlite:///{BASE_DIR / 'db.sqlite3'}")
if raw_database_url.startswith("mysql+pymysql://"):
    raw_database_url = raw_database_url.replace("mysql+pymysql://", "mysql://", 1)

DATABASES = {"default": dj_database_url.parse(raw_database_url, conn_max_age=600)}
_db = DATABASES["default"]
if _db.get("ENGINE") == "django.db.backends.mysql":
    _db.setdefault("OPTIONS", {})
    # Match typical MySQL deployments (Webuzo etc.)
    _db["OPTIONS"].setdefault("charset", "utf8mb4")


# Password validation
# https://docs.djangoproject.com/en/4.2/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',
    },
]

AUTH_USER_MODEL = "accounts.User"
AUTHENTICATION_BACKENDS = [
    "accounts.authentication.LegacyPasswordBackend",
]

REST_FRAMEWORK = {
    "DEFAULT_PERMISSION_CLASSES": [
        "rest_framework.permissions.AllowAny",
    ]
}

CORS_ALLOW_CREDENTIALS = True
# SPA sends this on every request when single-tenant / multi-tenant; must be allowed on preflight for cross-origin dev (e.g. Vite → Django).
CORS_ALLOW_HEADERS = list(default_headers) + ["x-workspace-subdomain"]
CORS_ALLOWED_ORIGINS = [o.strip() for o in os.getenv("CORS_ORIGINS", "").split(",") if o.strip()]
CORS_ALLOW_ALL_ORIGINS = not CORS_ALLOWED_ORIGINS
CSRF_TRUSTED_ORIGINS = [
    o.strip() for o in os.getenv(
        "CSRF_TRUSTED_ORIGINS",
        ",".join(
            [
                *CORS_ALLOWED_ORIGINS,
                "http://localhost:3000",
                "http://127.0.0.1:3000",
                "http://*.localhost:3000",
                "http://*.localhost",
            ]
        ),
    ).split(",") if o.strip()
]


# Internationalization
# https://docs.djangoproject.com/en/4.2/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/4.2/howto/static-files/

STATIC_URL = 'static/'
STATIC_ROOT = BASE_DIR / "staticfiles"

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

# Default primary key field type
# https://docs.djangoproject.com/en/4.2/ref/settings/#default-auto-field

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

SESSION_COOKIE_SECURE = os.getenv("SECURE_COOKIES", "false").lower() in ("1", "true", "yes")
CSRF_COOKIE_SECURE = SESSION_COOKIE_SECURE