config.py

import os
import json
from pathlib import Path

class Config:
    """Application configuration settings."""
    BASE_DIR = Path(__file__).resolve().parent
    
    @staticmethod
    def _load_json_config():
        """Load configuration from config.json file."""
        base_dir = Path(__file__).resolve().parent
        config_file = os.path.join(base_dir, 'config.json')
        try:
            with open(config_file, 'r') as f:
                return json.load(f)
        except FileNotFoundError:
            print(f"Warning: {config_file} not found. Using default values.")
            return {}
        except json.JSONDecodeError:
            print(f"Warning: Invalid JSON in {config_file}. Using default values.")
            return {}
    
    _json_config = _load_json_config()
    
    SECRET_KEY = 'random_secret_key'
    STATIC_FOLDER = 'static'
    TEMPLATES_FOLDER = 'templates'
    
    SWI_PROLOG_PATH = _json_config.get('SWI_PROLOG_PATH', 'swipl')
    APP_FOLDER = os.path.join(BASE_DIR, 'app')
    UPLOAD_FOLDER = os.path.join(APP_FOLDER, 'exports')
    GENERATED_CODE_FILE = os.path.join(UPLOAD_FOLDER, 'generated_prolog_code.pl')