# core/errors.py

USER_FRIENDLY_ERRORS = {
    "connection refused": "Unable to connect to the local AI server. Is Ollama running?",
    "503 service unavailable": "The advanced model is warming up (may take 2–4 minutes). Please try again shortly.",
    "timeout": "Request took too long. Check your internet connection or try again later.",
    "invalid token": "Authentication failed. Please verify your API keys are correct.",
    "model not found": "Selected model isn't loaded. Try pulling it with 'ollama pull <model>'."
}

def translate_error(exception: Exception) -> str:
    """
    Translate raw exception into a user-friendly message.
    Falls back to original message if no match.
    """
    exc_str = str(exception).lower()
    
    for key_phrase, friendly_msg in USER_FRIENDLY_ERRORS.items():
        if key_phrase in exc_str:
            return friendly_msg
            
    # Default fallback - show original error but in a friendlier way
    return f"Something unexpected happened: {str(exception)[:100]}{'...' if len(str(exception)) > 100 else ''}"