app.py

import os
import streamlit as st
import pandas as pd
import faiss
import numpy as np
from groq import Groq
from data_fetcher import fetch_nrel_data

# Fetch data from NREL API
data = get_hydrogen_data()

if data is None:
    print("⚠️ Using backup dataset...")
    data = [
        {"station": "Example Station 1", "location": "California", "status": "Open"},
        {"station": "Example Station 2", "location": "Texas", "status": "Planned"}
    ]

# Print the first station as a check
print("🚀 Hydrogen Station Data Sample:", data[0] if data else "No data available.")

# Import custom modules
from data_fetcher import get_hydrogen_data
from visuals import plot_hydrogen_capacity

# ✅ Load environment variables (API Keys)
NREL_API_KEY = os.getenv("NREL_API_KEY")
GROQ_API_KEY = os.getenv("GROQ_API_KEY")

# ✅ Ensure API keys are set
if not NREL_API_KEY:
    st.error("❌ ERROR: NREL API Key is missing! Please set it in environment variables.")
    st.stop()

if not GROQ_API_KEY:
    st.error("❌ ERROR: Groq API Key is missing! Please set it in environment variables.")
    st.stop()

# ✅ Fetch real-time hydrogen data
hydrogen_data = get_hydrogen_data()

# ✅ Display UI
st.set_page_config(page_title="HydroGen-AI", layout="wide")
st.title("🔬 HydroGen-AI: Green Hydrogen Techno-Economic Analyzer")

if hydrogen_data is not None:
    st.sidebar.subheader("📡 Real-time Hydrogen Data (NREL API)")
    st.sidebar.write(hydrogen_data.head(5))
else:
    st.sidebar.warning("⚠️ No hydrogen data available from NREL API.")