"""
Django settings for hospital_management_system project.

Generated by 'django-admin startproject' using Django 5.2.4.

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 decouple import config
from django.utils.translation import gettext_lazy as _

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


# 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 = 'django-insecure-#w(wlw2r86+q03%d(=mp_cbx+atrrot_aorpa))i0!s26@y9&&'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True


ALLOWED_HOSTS = ['127.0.0.1', 'localhost', '10.10.1.109']

# Application definition
DJANGO_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'django.contrib.humanize',
]

THIRD_PARTY_APPS = [
    'rest_framework',
    'corsheaders',
    'django_extensions',
    'allauth',
    'viewflow',
    'viewflow.workflow',
    # 'allauth.socialaccount',
]

LOCAL_APPS = [
    'core',
    'accounts.apps.AccountsConfig',
    'blood_bank',
    'patients',
    'appointments',
    'inpatients',
    'emr',
    'pharmacy',
    'laboratory',
    'radiology',
    'operating_theatre',
    'billing',
    'inventory',
    'hr',
    'analytics',
    'communications',
    'integration',
    'quality',
    'facility_management',
]

INSTALLED_APPS = DJANGO_APPS + THIRD_PARTY_APPS + LOCAL_APPS

MIDDLEWARE = [
    'corsheaders.middleware.CorsMiddleware',
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.locale.LocaleMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
    'core.middleware.TenantMiddleware',
]

ROOT_URLCONF = 'hospital_management.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [BASE_DIR / 'templates'],
        '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',
                'core.context_processors.tenant_context',
            ],
        },
    },
]

WSGI_APPLICATION = 'hospital_management.wsgi.application'


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

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': BASE_DIR / 'db.sqlite3',
    }
}


# 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/

# Internationalization
LOCALE_PATHS = (
    os.path.join(BASE_DIR, 'locale'),
)

LANGUAGE_COOKIE_NAME = 'django_language'
LANGUAGE_CODE = "en"
USE_I18N = True
USE_L10N = True
USE_TZ = True
LANGUAGES = [
    ('en', _('English')),
    ('ar', _('Arabic')),
]
TIME_ZONE = "Asia/Riyadh"

# Static files (CSS, JavaScript, Images)
STATIC_URL = '/static/'
STATIC_ROOT = BASE_DIR / 'staticfiles'
STATICFILES_DIRS = [
    BASE_DIR / 'static',
]

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

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

# Custom User Model
AUTH_USER_MODEL = 'accounts.User'

# Account login
# ACCOUNT_LOGIN_METHODS = {'email'}
# ACCOUNT_SIGNUP_FIELDS = ['email*', 'password1*', 'password2*']
# ACCOUNT_UNIQUE_EMAIL = True
#
LOGOUT_REDIRECT_URL = 'home'
# ACCOUNT_SIGNUP_REDIRECT_URL = '/'
# ACCOUNT_USER_MODEL_USERNAME_FIELD = 'email'
# ACCOUNT_EMAIL_VERIFICATION = "mandatory"
# ACCOUNT_CONFIRM_EMAIL_ON_GET = True
# ACCOUNT_EMAIL_CONFIRMATION_EXPIRE_MINUTES = 5
# LOGIN_REDIRECT_URL = 'home'

# REST Framework Configuration
REST_FRAMEWORK = {
    'DEFAULT_AUTHENTICATION_CLASSES': [
        'rest_framework.authentication.SessionAuthentication',
        'rest_framework.authentication.TokenAuthentication',
    ],
    'DEFAULT_PERMISSION_CLASSES': [
        'rest_framework.permissions.IsAuthenticated',
    ],
    'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.PageNumberPagination',
    'PAGE_SIZE': 50,
    'DEFAULT_FILTER_BACKENDS': [
        'django_filters.rest_framework.DjangoFilterBackend',
        'rest_framework.filters.SearchFilter',
        'rest_framework.filters.OrderingFilter',
    ],
}

# CORS Configuration
CORS_ALLOW_ALL_ORIGINS = True
CORS_ALLOW_CREDENTIALS = True

# Celery Configuration
CELERY_BROKER_URL = config('CELERY_BROKER_URL', default='redis://localhost:6379/0')
CELERY_RESULT_BACKEND = config('CELERY_RESULT_BACKEND', default='redis://localhost:6379/0')
CELERY_ACCEPT_CONTENT = ['json']
CELERY_TASK_SERIALIZER = 'json'
CELERY_RESULT_SERIALIZER = 'json'
CELERY_TIMEZONE = TIME_ZONE

# Cache Configuration
CACHES = {
    'default': {
        'BACKEND': 'django.core.cache.backends.redis.RedisCache',
        'LOCATION': config('REDIS_URL', default='redis://localhost:6379/1'),
    }
}

# Session Configuration
SESSION_ENGINE = 'django.contrib.sessions.backends.cache'
SESSION_CACHE_ALIAS = 'default'

# Logging Configuration
LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'formatters': {
        'verbose': {
            'format': '{levelname} {asctime} {module} {process:d} {thread:d} {message}',
            'style': '{',
        },
        'simple': {
            'format': '{levelname} {message}',
            'style': '{',
        },
    },
    'handlers': {
        'file': {
            'level': 'INFO',
            'class': 'logging.FileHandler',
            'filename': BASE_DIR / 'logs' / 'hospital_management.log',
            'formatter': 'verbose',
        },
        'console': {
            'level': 'DEBUG',
            'class': 'logging.StreamHandler',
            'formatter': 'simple',
        },
    },
    'root': {
        'handlers': ['console', 'file'],
        'level': 'INFO',
    },
    'loggers': {
        'django': {
            'handlers': ['console', 'file'],
            'level': 'INFO',
            'propagate': False,
        },
        'hospital_management': {
            'handlers': ['console', 'file'],
            'level': 'DEBUG',
            'propagate': False,
        },
    },
}

# Security Settings
SECURE_BROWSER_XSS_FILTER = True
SECURE_CONTENT_TYPE_NOSNIFF = True
X_FRAME_OPTIONS = 'DENY'

# Hospital Management Specific Settings
HOSPITAL_SETTINGS = {
    'DEFAULT_TIMEZONE': 'UTC',
    'AUDIT_LOG_RETENTION_DAYS': 2555,  # 7 years
    'SESSION_TIMEOUT_MINUTES': 30,
    'PASSWORD_EXPIRY_DAYS': 90,
    'MAX_LOGIN_ATTEMPTS': 3,
    'LOCKOUT_DURATION_MINUTES': 15,
    'ENCRYPTION_KEY': config('ENCRYPTION_KEY', default='hospital-encryption-key-change-in-production'),
}

# HL7 Configuration
HL7_SETTINGS = {
    'ENABLED': config('HL7_ENABLED', default=False, cast=bool),
    'HOST': config('HL7_HOST', default='localhost'),
    'PORT': config('HL7_PORT', default=2575, cast=int),
    'TIMEOUT': config('HL7_TIMEOUT', default=30, cast=int),
}

# DICOM Configuration
DICOM_SETTINGS = {
    'ENABLED': config('DICOM_ENABLED', default=False, cast=bool),
    'AE_TITLE': config('DICOM_AE_TITLE', default='HOSPITAL_PACS'),
    'PORT': config('DICOM_PORT', default=11112, cast=int),
    'STORAGE_PATH': BASE_DIR / 'media' / 'dicom',
}

# Email Configuration
EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
EMAIL_HOST = config('EMAIL_HOST', default='localhost')
EMAIL_PORT = config('EMAIL_PORT', default=587, cast=int)
EMAIL_USE_TLS = config('EMAIL_USE_TLS', default=True, cast=bool)
EMAIL_HOST_USER = config('EMAIL_HOST_USER', default='')
EMAIL_HOST_PASSWORD = config('EMAIL_HOST_PASSWORD', default='')
DEFAULT_FROM_EMAIL = config('DEFAULT_FROM_EMAIL', default='noreply@hospital.com')

# Create logs directory
os.makedirs(BASE_DIR / 'logs', exist_ok=True)
os.makedirs(DICOM_SETTINGS['STORAGE_PATH'], exist_ok=True)