import os
import streamlit as st
from transformers import AutoTokenizer, AutoModelForSeq2SeqLM

# Enable Zero GPU
os.environ["TOKENIZERS_PARALLELISM"] = "true"

model_name = "Mhassanen/nllb-200-600M-En-Ar"
tokenizer = AutoTokenizer.from_pretrained(model_name, src_lang="eng_Latn", tgt_lang="arz_Arab")
model = AutoModelForSeq2SeqLM.from_pretrained(model_name)

def translate2(text):
    import torch
    # Ensure Zero GPU is enabled
    torch.set_grad_enabled(False)
    torch.set_num_threads(1)
    
    inputs = tokenizer(text, return_tensors="pt", padding=True)
    translated_tokens = model.generate(**inputs)
    translated_text = tokenizer.batch_decode(translated_tokens, skip_special_tokens=True)
    return translated_text[0]


st.set_page_config(page_title="English to Arabic Translation", page_icon="logo.png")

with st.sidebar:
    st.image("logo.png", width=70)
    st.markdown('<div style="position: absolute; left: 5px;"></div>', unsafe_allow_html=True)
    st.markdown("# English to Arabic Translation")
    st.markdown("---")    
    st.markdown("## About")
    st.markdown('''
  - This App powered by [Mhassanen/nllb-200-600M-En-Ar](https://huggingface.co/Mhassanen/nllb-200-600M-En-Ar) Language model
    ''')

st.title("Try Now!")

text_to_translate = st.text_area("Enter text in English:")

if st.button("Translate"):
    if text_to_translate:
        with st.spinner("Translating..."):
            translation = translate2(text_to_translate)
            st.success("Translation completed!")
            st.text_area("Translated text in Arabic:", translation, height=200)
    else:
        st.warning("Please enter some text to translate.")