import streamlit as st

from extractor import extract_ppt_text, extract_pdf_text
from tts_engine import generate_voice


st.title("AI Lecture Voice Generator")

st.write("Convert PPT, PDF, or Text into Indian English or Tamil speech")


uploaded_file = st.file_uploader(
    "Upload PPT / PDF / TXT",
    type=["pptx","pdf","txt"]
)


text_data = ""


if uploaded_file:

    if uploaded_file.name.endswith(".pptx"):

        text_data = extract_ppt_text(uploaded_file)

    elif uploaded_file.name.endswith(".pdf"):

        text_data = extract_pdf_text(uploaded_file)

    else:

        text_data = uploaded_file.read().decode()

    st.text_area("Extracted Text", text_data, height=200)


if st.button("Generate Speech"):

    if text_data == "":

        st.warning("Upload a file first")

    else:

        audio = generate_voice(text_data)

        st.audio(audio)