import streamlit as st
from transformers import pipeline
from PIL import Image
from langchain.chat_models import ChatGoogleGenerativeAI
import os

# Set up the Google API Key (add this as a secret in Hugging Face Spaces)
os.environ["GOOGLE_API_KEY"] = st.secrets["GOOGLE_API_KEY"]

# Initialize Google Gemini model
llm = ChatGoogleGenerativeAI(
    model="gemini-1.5-pro",
    temperature=0
)

# Load the image classification pipeline
@st.cache_resource
def load_image_classification_pipeline():
    """
    Load the image classification pipeline using a pretrained model.
    """
    return pipeline("image-classification", model="Shresthadev403/food-image-classification")

pipe_classification = load_image_classification_pipeline()

# Function to generate ingredients using Google Gemini
def get_ingredients_google(food_name):
    """
    Generate a list of ingredients for the given food item using Google Gemini AI.
    """
    prompt = f"List the main ingredients typically used to prepare {food_name}:"
    response = llm.predict(prompt)
    return response.strip()

# Streamlit app setup
st.title("Food Image Recognition with Ingredients")

# Add banner image
st.image("IR_IMAGE.png", caption="Food Recognition Model", use_column_width=True)

# Sidebar for model information
st.sidebar.title("Model Information")
st.sidebar.write("**Image Classification Model**: Shresthadev403/food-image-classification")
st.sidebar.write("**LLM for Ingredients**: Google Gemini 1.5 Pro")

# Upload image
uploaded_file = st.file_uploader("Choose a food image...", type=["jpg", "png", "jpeg"])

if uploaded_file is not None:
    # Display the uploaded image
    image = Image.open(uploaded_file)
    st.image(image, caption="Uploaded Image", use_column_width=True)
    st.write("Classifying...")

    # Make predictions
    predictions = pipe_classification(image)

    # Display only the top prediction
    top_food = predictions[0]['label']
    st.header(f"Food: {top_food}")

    # Generate and display ingredients for the top prediction
    st.subheader("Ingredients")
    try:
        ingredients = get_ingredients_google(top_food)
        st.write(ingredients)
    except Exception as e:
        st.error(f"Error generating ingredients: {e}")

# Footer
st.sidebar.markdown("Created with ❤️ using Streamlit and Hugging Face.")