import joblib
import pandas as pd

def load_artifacts():
    """Load the trained pipeline and target encoder."""
    pipeline = joblib.load("models/network_logs_pipeline.joblib")
    target_encoder = joblib.load("models/target_encoder.joblib")
    return pipeline, target_encoder


def predict_intrusion(pipeline, target_encoder, features: dict):
    """
    Predict Scan_Type from input features.
    
    Args:
        pipeline: sklearn pipeline with preprocessing + model
        target_encoder: LabelEncoder for Scan_Type
        features: dict of input features

    Returns:
        str: Predicted Scan_Type
    """
    input_df = pd.DataFrame([features])  # single row DataFrame
    pred_label = pipeline.predict(input_df)[0]
    scan_type = target_encoder.inverse_transform([pred_label])[0]
    return scan_type