import gradio as gr
import torch
import numpy as np
from transformers import AutoModelForMultipleChoice, AutoTokenizer

model_id = "Palak/microsoft_deberta-large_squad"

# Load the model and tokenizer
model = AutoModelForMultipleChoice.from_pretrained(model_id)
tokenizer = AutoTokenizer.from_pretrained(model_id)

# Define the preprocessing function
def preprocess(text):
    # Split the input text into lines
    lines = text.strip().split("\n")
    samples = []

    # Loop through each line and create a sample
    for line in lines:
        parts = line.split("\t")
        if len(parts) >= 6:
            sample = {
                "prompt": parts[0],
                "A": parts[1],
                "B": parts[2],
                "C": parts[3],
                "D": parts[4],
                "E": parts[5]
            }
            samples.append(sample)
    
    return samples

# Define the prediction function
def predict(data):
    results = []
    for sample in data:
        first_sentences = [sample["prompt"]] * 5
        second_sentences = [sample[option] for option in "ABCDE"]
        tokenized_sentences = tokenizer(first_sentences, second_sentences, truncation=True, padding=True, return_tensors="pt")
        inputs = tokenized_sentences["input_ids"]
        masks = tokenized_sentences["attention_mask"]
        with torch.no_grad():
            logits = model(inputs, attention_mask=masks).logits
        predictions_as_ids = torch.argsort(-logits, dim=1)
        answers = np.array(list("ABCDE"))[predictions_as_ids.tolist()]
        results.append(["".join(i) for i in answers[:, :3]])
    return results

# Create the Gradio interface
iface = gr.Interface(
    fn=predict,
    inputs=gr.inputs.Textbox(placeholder="Paste multiple-choice questions (prompt and options separated by tabs, one question per line) ..."),
    outputs=gr.outputs.Label(num_top_classes=3),
    live=True,
    title="LLM Science Exam Demo",
    description="Enter multiple-choice questions (prompt and options) below and get predictions.",
)

# Run the interface
iface.launch()