Update src/streamlit_app.py

src/streamlit_app.py

@@ -1,40 +1,82 @@
-import altair as alt
-import numpy as np
-import pandas as pd
+# streamlit_app.py
+
 import streamlit as st
+import google.generativeai as genai
+import os
+import json
+from io import StringIO
+
+# ------------------------------------------------------
+# Hugging Face Spaces에서는 환경변수(Secrets)로 API 키를 저장
+# Settings → secrets → New secret: GEMINI_API_KEY 등록
+# ------------------------------------------------------
+GOOGLE_API_KEY = os.getenv("GOOGLE_API_KEY")
+genai.configure(api_key=GOOGLE_API_KEY)
+
+# 초기 설정
+if "messages" not in st.session_state:
+    st.session_state.messages = []
+
+if "system_prompt" not in st.session_state:
+    st.session_state.system_prompt = "당신은 친절한 AI 어시스턴트입니다."
+
+model = genai.GenerativeModel("gemma-3-27b-it")
+
+# ------------------------------------------------------
+# Streamlit UI
+# ------------------------------------------------------
+st.set_page_config(page_title="Gemini 챗봇", page_icon="🤖", layout="wide")
+st.title("🤖 Google Gemini 대화형 챗봇")
+st.caption("Hugging Face Spaces + Streamlit + Google Generative AI")
+
+# 사이드바: 시스템 프롬프트 수정 & 로그 다운로드
+with st.sidebar:
+    st.subheader("⚙️ 설정")
+    new_system_prompt = st.text_area("시스템 프롬프트", st.session_state.system_prompt, height=100)
+    if st.button("변경 적용"):
+        st.session_state.system_prompt = new_system_prompt
+        st.success("시스템 프롬프트가 변경되었습니다.")
+
+    st.markdown("---")
+    if st.session_state.messages:
+        # JSON 변환
+        json_data = json.dumps(st.session_state.messages, ensure_ascii=False, indent=2)
+        st.download_button(
+            label="💾 대화 로그 JSON 다운로드",
+            data=json_data,
+            file_name="chat_log.json",
+            mime="application/json"
+        )
+
+# 대화 출력
+for msg in st.session_state.messages:
+    with st.chat_message("user"):
+        st.markdown(msg["user"])
+    with st.chat_message("assistant"):
+        st.markdown(msg["ai"])
+
+# 사용자 입력
+if prompt := st.chat_input("메시지를 입력하세요. 종료하려면 'quit' 입력"):
+    if prompt.lower() == "quit":
+        st.warning("대화를 종료합니다. 새로고침하면 다시 시작할 수 있습니다.")
+    else:
+        # 대화 컨텍스트 구성
+        context = f"시스템: {st.session_state.system_prompt}\n"
+        for msg in st.session_state.messages[-10:]:  # 최근 10개만 유지
+            context += f"사용자: {msg['user']}\nAI: {msg['ai']}\n"
+        context += f"사용자: {prompt}\nAI:"
+
+        with st.chat_message("user"):
+            st.markdown(prompt)
+
+        try:
+            response = model.generate_content(context)
+            ai_response = response.text
+        except Exception as e:
+            ai_response = f"⚠️ 오류 발생: {e}"
+
+        with st.chat_message("assistant"):
+            st.markdown(ai_response)
 
-"""
-# Welcome to Streamlit!
-
-Edit `/streamlit_app.py` to customize this app to your heart's desire :heart:.
-If you have any questions, checkout our [documentation](https://docs.streamlit.io) and [community
-forums](https://discuss.streamlit.io).
-
-In the meantime, below is an example of what you can do with just a few lines of code:
-"""
-
-num_points = st.slider("Number of points in spiral", 1, 10000, 1100)
-num_turns = st.slider("Number of turns in spiral", 1, 300, 31)
-
-indices = np.linspace(0, 1, num_points)
-theta = 2 * np.pi * num_turns * indices
-radius = indices
-
-x = radius * np.cos(theta)
-y = radius * np.sin(theta)
-
-df = pd.DataFrame({
-    "x": x,
-    "y": y,
-    "idx": indices,
-    "rand": np.random.randn(num_points),
-})
-
-st.altair_chart(alt.Chart(df, height=700, width=700)
-    .mark_point(filled=True)
-    .encode(
-        x=alt.X("x", axis=None),
-        y=alt.Y("y", axis=None),
-        color=alt.Color("idx", legend=None, scale=alt.Scale()),
-        size=alt.Size("rand", legend=None, scale=alt.Scale(range=[1, 150])),
-    ))
+        # 대화 기록 저장
+        st.session_state.messages.append({"user": prompt, "ai": ai_response})