app.py

import streamlit as st
from PIL import Image
import io
import base64

# Assuming google.generativeai as genai is the correct import based on your description
import google.generativeai as genai

# Configure the API key (should be set as an environment variable or secure storage in production)
api_key = "AIzaSyC70u1sN87IkoxOoIj4XCAPw97ae2LZwNM"  # Replace with your actual API key
genai.configure(api_key=api_key)

generation_config = genai.GenerationConfig(
    temperature=0.9,
    max_output_tokens=3000
)

safety_settings = []

# Initialize session state for chat history
if 'chat_history' not in st.session_state:
    st.session_state['chat_history'] = []

# UI layout
st.title("Gemini Chatbot")

# Function to convert image to base64
def get_image_base64(image):
    image = image.convert("RGB")  # Convert to RGB to remove alpha channel if present
    buffered = io.BytesIO()
    image.save(buffered, format="JPEG")
    img_str = base64.b64encode(buffered.getvalue()).decode()
    return img_str

# Callback function to send message and clear input
def send_message():
    user_input = st.session_state['user_input']
    uploaded_files = st.session_state['file_uploader']
    
    if user_input or uploaded_files:
        # Save user input to the chat history
        if user_input:
            st.session_state['chat_history'].append(("User", user_input))

        # Process text input
        if user_input and not uploaded_files:
            prompts = [{"role": "user", "parts": [{"text": user_input}]}]
            model = genai.GenerativeModel(
                model_name='gemini-pro',
                generation_config=generation_config,
                safety_settings=safety_settings
            )
            response = model.generate_content(prompts)
            response_text = response.text if hasattr(response, "text") else "No response text found."
            st.session_state['chat_history'].append(("Gemini", response_text))

        # Process and save uploaded images to the chat history
        if uploaded_files:
            for uploaded_file in uploaded_files:
                image = Image.open(uploaded_file).convert("RGB")  # Ensure image is in RGB
                image_base64 = get_image_base64(image)
                st.session_state['chat_history'].append(("User", f"Uploaded image: {uploaded_file.name}"))

                image_prompt = {"role": "user", "parts": [{"mime_type": uploaded_file.type, "data": image_base64}]}
                model = genai.GenerativeModel(
                    model_name='gemini-pro-vision',
                    generation_config=generation_config,
                    safety_settings=safety_settings
                )
                response = model.generate_content([image_prompt])
                response_text = response.text if hasattr(response, "text") else "No response text found."
                st.session_state['chat_history'].append(("Gemini", response_text))

        # Clear the input box after sending the message
        st.session_state.user_input = ""

# Multiline text input for the user to send messages
user_input = st.text_area("Enter your message here:", key="user_input", value="")

# File uploader for images
uploaded_files = st.file_uploader(
    "Upload images:",
    type=["png", "jpg", "jpeg"],
    accept_multiple_files=True,
    key="file_uploader"
)

# Button to send the message
send_button = st.button("Send", on_click=send_message)

# Display the chat history
for message in st.session_state['chat_history']:
    role, text = message
    st.markdown(f"**{role.title()}**: {text}")