import base64
import streamlit as st
from pathlib import Path
st.set_page_config(page_title="PptxViewJS – Streamlit Example", layout="wide")
st.title("PptxViewJS – Streamlit Example")
st.markdown("Upload a .pptx file to render it in the browser using PptxViewJS.")
uploaded = st.file_uploader("Choose a PPTX file", type=["pptx"])
canvas_width = st.slider("Canvas width (px)", 640, 1600, 960, 10)
canvas_height = int(canvas_width * 9 / 16)
if uploaded is not None:
data = uploaded.read()
b64 = base64.b64encode(data).decode("ascii")
bundle_path = Path(__file__).resolve().parents[1] / "dist" / "PptxViewJS.min.js"
if not bundle_path.exists():
st.error("dist/PptxViewJS.min.js not found. Run `npm run build:min` before launching this app.")
st.stop()
bundle_base64 = base64.b64encode(bundle_path.read_bytes()).decode("ascii")
# Inline HTML/JS component using PptxViewJS from dist
# Assumes you run Streamlit from repository root so ../dist path is valid.
html = f"""
"""
component_height = int(canvas_width * 1.1 + 200)
st.components.v1.html(html, height=component_height)
else:
st.info("Upload a .pptx file to start.")