app.py

import streamlit as st
from transformers import (
    AutoTokenizer,
    AutoModelForSequenceClassification,
    AutoModelForSeq2SeqLM,
)
import torch

# Define the model names and mappings
MODEL_MAPPING = {
    "text2shellcommands": "t5-small",  # Example seq2seq model
    "pentest_ai": "bert-base-uncased",  # Example sequence classification model
}

# Sidebar for model selection
def select_model():
    st.sidebar.header("Model Configuration")
    return st.sidebar.selectbox("Select a model", list(MODEL_MAPPING.keys()))


# Load model and tokenizer with caching
@st.cache_resource
def load_model_and_tokenizer(model_name):
    try:
        # Load the tokenizer and model
        tokenizer = AutoTokenizer.from_pretrained(model_name)
        if "t5" in model_name or "seq2seq" in model_name:
            model = AutoModelForSeq2SeqLM.from_pretrained(model_name)
        else:
            model = AutoModelForSequenceClassification.from_pretrained(model_name)

        return tokenizer, model
    except Exception as e:
        st.error(f"Error loading model: {e}")
        return None, None


# Handle predictions
def predict_with_model(user_input, model, tokenizer, model_choice):
    if model_choice == "text2shellcommands":
        # Generate shell commands (seq2seq task)
        inputs = tokenizer(user_input, return_tensors="pt", padding=True, truncation=True)
        with torch.no_grad():
            outputs = model.generate(**inputs)
        generated_command = tokenizer.decode(outputs[0], skip_special_tokens=True)
        return {"Generated Shell Command": generated_command}
    else:
        # Perform classification
        inputs = tokenizer(user_input, return_tensors="pt", padding=True, truncation=True)
        with torch.no_grad():
            outputs = model(**inputs)
        logits = outputs.logits
        predicted_class = torch.argmax(logits, dim=-1).item()
        return {
            "Predicted Class": predicted_class,
            "Logits": logits.tolist(),
        }


# Main Streamlit app
def main():
    st.title("AI Model Inference Dashboard")

    # Model selection
    model_choice = select_model()
    model_name = MODEL_MAPPING.get(model_choice)
    tokenizer, model = load_model_and_tokenizer(model_name)

    # Input text box
    user_input = st.text_area("Enter text:")

    # Perform prediction if input and models are available
    if user_input and model and tokenizer:
        result = predict_with_model(user_input, model, tokenizer, model_choice)
        for key, value in result.items():
            st.write(f"{key}: {value}")
    else:
        st.info("Please enter some text for prediction.")


if __name__ == "__main__":
    main()