app.py

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

# 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 and file uploader key
if 'chat_history' not in st.session_state:
    st.session_state['chat_history'] = []
if 'file_uploader_key' not in st.session_state:
    st.session_state['file_uploader_key'] = str(uuid.uuid4())

# 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

# Function to send message and clear input
def send_message():
    user_input = st.session_state.user_input
    uploaded_files = st.session_state.uploaded_files

    text_prompts = []
    image_prompts = []

    # Process text input for multi-turn conversation
    if user_input:
        text_prompts.append({"role": "user", "parts": [{"text": user_input}]})
        st.session_state['chat_history'].append({"role": "user", "parts": [{"text": user_input}]})

    # Process uploaded images for single-turn conversation
    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)
            image_prompts.append({"role": "user", "parts": [{"mime_type": uploaded_file.type, "data": image_base64}]})

    # Generate text response if text input is provided
    if text_prompts:
        model = genai.GenerativeModel(
            model_name='gemini-pro',
            generation_config=generation_config,
            safety_settings=safety_settings
        )
        response = model.generate_content(st.session_state['chat_history'])
        response_text = response.text if hasattr(response, "text") else "No response text found."
        st.session_state['chat_history'].append({"role": "model", "parts": [{"text": response_text}]})

    # Generate image response if images are uploaded
    if image_prompts:
        model = genai.GenerativeModel(
            model_name='gemini-pro-vision',
            generation_config=generation_config,
            safety_settings=safety_settings
        )
        response = model.generate_content(image_prompts)
        response_text = response.text if hasattr(response, "text") else "No response text found."
        for prompt in image_prompts:
            st.session_state['chat_history'].append(prompt)  # Append images to history
        st.session_state['chat_history'].append({"role": "model", "parts": [{"text": response_text}]})

    # Clear the user input and generate a new key for the file uploader widget to reset it
    st.session_state.user_input = ''
    st.session_state.uploaded_files = []
    st.session_state.file_uploader_key = str(uuid.uuid4())

# Function to clear conversation
def clear_conversation():
    st.session_state['chat_history'] = []
    st.session_state['file_uploader_key'] = str(uuid.uuid4())

# 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=st.session_state.file_uploader_key
)

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

# Button to clear the conversation
clear_button = st.button("Clear Conversation", on_click=clear_conversation)

# Display the chat history
for entry in st.session_state['chat_history']:
    role = entry["role"]
    parts = entry["parts"][0]
    if 'text' in parts:
        st.markdown(f"{role.title()}: {parts['text']}")
    elif 'data' in parts:
        st.markdown(f"{role.title()}: (Image)")

# Ensure the file_uploader widget state is tied to the randomly generated key
st.session_state.uploaded_files = uploaded_files