seller_central_backend/config/settings.py

"""
Django settings for config project.

Generated by 'django-admin startproject' using Django 6.1.

For more information on this file, see
https://docs.djangoproject.com/en/6.1/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/6.1/ref/settings/
"""

import json
import os
from pathlib import Path

# 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/6.1/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'django-insecure-w97g8j2h1=r%4$i1qc4xu%#c3)iw^4@#0-^sr3h&*okow^ax!@'

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

ALLOWED_HOSTS = ['*']


# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'rest_framework',
    'corsheaders',
    'api',
]

MIDDLEWARE = [
    'corsheaders.middleware.CorsMiddleware',
    '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',
]

CORS_ALLOW_ALL_ORIGINS = True
CORS_ALLOW_CREDENTIALS = True


ROOT_URLCONF = 'config.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

WSGI_APPLICATION = 'config.wsgi.application'


# ---------------------------------------------------------------------------
# Database Configuration
# ---------------------------------------------------------------------------
import socket
def is_postgres_available():
    try:
        s = socket.create_connection(('127.0.0.1', 5432), timeout=1)
        s.close()
        return True
    except OSError:
        return False

if is_postgres_available():
    db_credentials = {
        'ENGINE':   'django.db.backends.postgresql',
        'USER':     os.environ.get('DB_USER', 'vignesh'),
        'PASSWORD': os.environ.get('DB_PASSWORD', 'vtechnosoft@123A'),
        'HOST':     os.environ.get('DB_HOST', '127.0.0.1'),
        'PORT':     os.environ.get('DB_PORT', '5432'),
    }

    DATABASES = {
        'default': {
            'NAME': 'sellerprofile',
            **db_credentials
        },
        'customerprofile': {
            'NAME': 'customerprofile',
            **db_credentials
        },
        'productprofile': {
            'NAME': 'productprofile',
            **db_credentials
        }
    }
else:
    DATABASES = {
        'default': {
            'ENGINE': 'django.db.backends.sqlite3',
            'NAME': BASE_DIR / 'db.sqlite3',
        },
        'customerprofile': {
            'ENGINE': 'django.db.backends.sqlite3',
            'NAME': BASE_DIR / 'db.sqlite3',
        },
        'productprofile': {
            'ENGINE': 'django.db.backends.sqlite3',
            'NAME': BASE_DIR / 'db.sqlite3',
        }
    }

DATABASE_ROUTERS = ['config.db_router.DatabaseRouter']



# Password validation
# https://docs.djangoproject.com/en/6.1/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/6.1/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/6.1/howto/static-files/

STATIC_URL = 'static/'


# Email
# https://docs.djangoproject.com/en/6.1/topics/email/#topic-email-configuration

MAILERS = {
    'default': {
        'BACKEND': 'django.core.mail.backends.console.EmailBackend',
    },
}

from datetime import timedelta

REST_FRAMEWORK = {
    'DEFAULT_AUTHENTICATION_CLASSES': (
        'rest_framework_simplejwt.authentication.JWTAuthentication',
    ),
    'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.PageNumberPagination',
    'PAGE_SIZE': 20,
}

SIMPLE_JWT = {
    'ACCESS_TOKEN_LIFETIME': timedelta(minutes=15),
    'REFRESH_TOKEN_LIFETIME': timedelta(days=7),
    'ROTATE_REFRESH_TOKENS': False,
    'BLACKLIST_AFTER_ROTATION': False,
    'UPDATE_LAST_LOGIN': False,
    'ALGORITHM': 'HS256',
    'SIGNING_KEY': SECRET_KEY,
    'VERIFYING_KEY': None,
    'AUDIENCE': None,
    'ISSUER': None,
    'AUTH_HEADER_TYPES': ('Bearer',),
    'AUTH_HEADER_NAME': 'HTTP_AUTHORIZATION',
    'USER_ID_FIELD': 'id',
    'USER_ID_CLAIM': 'user_id',
}



# ---------------------------------------------------------------------------
# Logging
# Writes to /app/logs/ (volume-mounted on host) and to stdout.
# Log files are also picked up by the CloudWatch Agent on the EC2 host.
# ---------------------------------------------------------------------------
LOGS_DIR = BASE_DIR / 'logs'
os.makedirs(LOGS_DIR, exist_ok=True)

LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,

    # ----- Formatters -----
    'formatters': {
        'verbose': {
            'format': '[{asctime}] {levelname} {name} {process:d} {thread:d} | {message}',
            'style': '{',
            'datefmt': '%Y-%m-%d %H:%M:%S',
        },
        'simple': {
            'format': '[{asctime}] {levelname} | {message}',
            'style': '{',
            'datefmt': '%Y-%m-%d %H:%M:%S',
        },
    },

    # ----- Filters -----
    'filters': {
        'require_debug_false': {
            '()': 'django.utils.log.RequireDebugFalse',
        },
        'require_debug_true': {
            '()': 'django.utils.log.RequireDebugTrue',
        },
    },

    # ----- Handlers -----
    'handlers': {
        # Writes every log line to stdout (visible via `docker logs`)
        'console': {
            'class': 'logging.StreamHandler',
            'formatter': 'simple',
        },
        # Rotating file for all application logs (INFO+)
        'app_file': {
            'class': 'logging.handlers.RotatingFileHandler',
            'filename': str(LOGS_DIR / 'app.log'),
            'maxBytes': 10 * 1024 * 1024,  # 10 MB
            'backupCount': 7,
            'formatter': 'verbose',
            'encoding': 'utf-8',
        },
        # Dedicated rotating file for ERROR+ only
        'error_file': {
            'class': 'logging.handlers.RotatingFileHandler',
            'filename': str(LOGS_DIR / 'error.log'),
            'maxBytes': 10 * 1024 * 1024,  # 10 MB
            'backupCount': 7,
            'formatter': 'verbose',
            'level': 'ERROR',
            'encoding': 'utf-8',
        },
        # Django request/response log
        'request_file': {
            'class': 'logging.handlers.RotatingFileHandler',
            'filename': str(LOGS_DIR / 'requests.log'),
            'maxBytes': 10 * 1024 * 1024,  # 10 MB
            'backupCount': 7,
            'formatter': 'simple',
            'encoding': 'utf-8',
        },
    },

    # ----- Loggers -----
    'loggers': {
        # Root logger – catches everything not matched below
        '': {
            'handlers': ['console', 'app_file', 'error_file'],
            'level': 'INFO',
            'propagate': False,
        },
        # Your application code
        'api': {
            'handlers': ['console', 'app_file', 'error_file'],
            'level': 'DEBUG',
            'propagate': False,
        },
        # Django HTTP request log (4xx / 5xx)
        'django.request': {
            'handlers': ['console', 'request_file', 'error_file'],
            'level': 'INFO',
            'propagate': False,
        },
        # Suppress noisy security middleware warnings in prod
        'django.security': {
            'handlers': ['error_file'],
            'level': 'ERROR',
            'propagate': False,
        },
    },
}

# Media files (uploads)
MEDIA_URL = '/media/'
MEDIA_ROOT = os.path.join(BASE_DIR, 'media')

# CloudFront Domain Configuration
AWS_CLOUDFRONT_DOMAIN = os.environ.get('AWS_CLOUDFRONT_DOMAIN', '')
USE_S3 = True
AWS_STORAGE_BUCKET_NAME = 'betasupplierdocumentstorage'