config.py

import os
from datetime import timedelta
from dotenv import load_dotenv

load_dotenv()

class Config:
    """Application configuration class"""
    
    # Flask settings
    SECRET_KEY = os.getenv('SECRET_KEY', 'dev-secret-key-change-in-production')
    FLASK_ENV = os.getenv('FLASK_ENV', 'development')
    DEBUG = FLASK_ENV == 'development'
    
    # Database settings
    SQLALCHEMY_DATABASE_URI = os.getenv('DATABASE_URL', 'sqlite:///database.db')
    SQLALCHEMY_TRACK_MODIFICATIONS = False
    
    # JWT settings
    JWT_SECRET_KEY = os.getenv('JWT_SECRET_KEY', 'jwt-secret-key-change-in-production')
    JWT_ACCESS_TOKEN_EXPIRES = timedelta(hours=1)
    JWT_REFRESH_TOKEN_EXPIRES = timedelta(days=30)
    
    # CORS settings
    CORS_ORIGINS = os.getenv('CORS_ORIGINS', 'http://localhost:5173').split(',')
    
    # File upload settings
    MAX_CONTENT_LENGTH = 16 * 1024 * 1024  # 16MB max file size
    UPLOAD_FOLDER = 'uploads'
    ALLOWED_EXTENSIONS = {'png', 'jpg', 'jpeg', 'gif'}
    
    # Pagination
    PRODUCTS_PER_PAGE = 12
    ORDERS_PER_PAGE = 10
    TICKETS_PER_PAGE = 10
    
    # Business rules
    MIN_PASSWORD_LENGTH = 8
    MAX_CART_ITEMS = 50
    
    # M-PESA Configuration
    MPESA_ENVIRONMENT = os.getenv('MPESA_ENVIRONMENT', 'sandbox')  # sandbox or production
    MPESA_CONSUMER_KEY = os.getenv('MPESA_CONSUMER_KEY', '')
    MPESA_CONSUMER_SECRET = os.getenv('MPESA_CONSUMER_SECRET', '')
    MPESA_SHORTCODE = os.getenv('MPESA_SHORTCODE', '174379')
    MPESA_PASSKEY = os.getenv('MPESA_PASSKEY', 'bfb279f9aa9bdbcf158e97dd71a467cd2e0c893059b10f78e6b72ada1ed2c919')
    MPESA_CALLBACK_URL = os.getenv('MPESA_CALLBACK_URL', 'https://yourdomain.com/api/mpesa/callback')