import streamlit as st
from dotenv import load_dotenv
import os
from langchain_openai import ChatOpenAI

# Load API keys
load_dotenv("apiroute.env")
api_key = os.getenv("OPENAI_API_KEY")
api_base = os.getenv("OPENAI_API_BASE")



# Init LLM
llm = ChatOpenAI(model_name="google/gemma-3n-e2b-it:free", temperature=0.7)

# Streamlit UI
st.set_page_config(page_title="Chatbot", layout="centered")
st.title("💬 Chat with Gremmy")

# Session for chat history
if "history" not in st.session_state:
    st.session_state.history = []

# Display chat history at top
for sender, msg in st.session_state.history:
    st.markdown(f"**{sender}:** {msg}")

# Input with "Send" button
with st.form(key="chat_form", clear_on_submit=True):
    user_input = st.text_input("talk to me", key="user_message")
    submitted = st.form_submit_button("Send")

if submitted and user_input:
    st.session_state.history.append(("You", user_input))
    response = llm.invoke(user_input)
    st.session_state.history.append(("Gremmy", response.content))
    st.rerun()