import streamlit as st
from pathlib import Path

APP_DIR = Path(__file__).resolve().parent      # src/
REPO_ROOT = APP_DIR.parent                     # repo root
SECTIONS_DIR = REPO_ROOT / "sections"


SECTIONS = {
    "Identify dataset": "01_identify_dataset.md",
    "Getting started with HuggingFace": "02_getting_started_with_hf.md",
    "Create dataset": "03_create_dataset.md",
    "Add README": "04_create_dataset_card.md",
    "Add metadata": "05_add_dataset_metadata.md",
    "Versioning": "06_versioning.md",
    "Practical recommendations": "07_practical_recommendations.md",
    "FAQ": "08_faq.md",
}

st.set_page_config(
    page_title="Molecular Dataset Curation Guide",
    layout="wide"
)

st.sidebar.title("Dataset Curation Guide")
choice = st.sidebar.radio("Navigate", list(SECTIONS.keys()))

md_path = SECTIONS_DIR / SECTIONS[choice]

if md_path.exists():
    st.markdown(md_path.read_text(), unsafe_allow_html=True)
else:
    st.error(f"Missing section file: {md_path}")