"""
Enterprise Knowledge Assistant - Query Router
Uses fine-tuned DistilBERT to classify queries into HR/Legal/Finance/IT domains.
"""

import torch

def classify_query(query, model, tokenizer, label_encoder):
    inputs = tokenizer(query, return_tensors="pt", truncation=True, padding=True, max_length=64)
    with torch.no_grad():
        outputs = model(**inputs)
    predicted_class = torch.argmax(outputs.logits, dim=1).item()
    predicted_domain = label_encoder.inverse_transform([predicted_class])[0]
    probs = torch.nn.functional.softmax(outputs.logits, dim=1)[0]
    confidence = probs[predicted_class].item()
    return predicted_domain, confidence