app.py

import streamlit as st
import google.generativeai as genai
import os
from dotenv import load_dotenv
load_dotenv() # loading all the environment variables
from PIL import Image

genai.configure(api_key=os.getenv("GOOGLE_API_KEY"))

def get_gemini_response(input_prompt,image):
    model=genai.GenerativeModel('gemini-pro-vision')
    response=model.generate_content([input_prompt,image[0]])
    return response.text

def input_image_setup(uploaded_file):
    # Check if a file has been uploaded
    if uploaded_file is not None:
        # Read the file into bytes
        bytes_data=uploaded_file.getvalue()
        
        image_parts=[
            {
                "mime_type": uploaded_file.type, # Get the mime type of the uploaded file
                "data": bytes_data
            }
        ]
        return image_parts
    else:
        raise FileNotFoundError("No file uploaded")
    
## initialize our streamlit app

st.set_page_config(page_title="Calorie Advisor App")

st.header("Calorie Advisor App")
uploaded_file=st.file_uploader("Choose an image...", type=["jpg","jpeg","png"])
image=""
if uploaded_file is not None:
    image=Image.open(uploaded_file)
    st.image(image,caption="Uploaded Image.", use_column_width=True)
    
submit=st.button("Tell me about the total calories")

input_prompt="""
You are an expert in nutrition. You need to see the food items from the image 
                and calculate the total calories. Provide the details of every 
                food item with calories intake in below format
                
                1. Item 1 - no. of calories
                2. Item 2 - no. of calories
                ----
                ----
        Finally, mention whether the food is health or not and also mention the
        percentage split of carbohydrates,proteins,fats,fibers,sugar and other
        things required in our diet.

"""

if submit:
    image_data=input_image_setup(uploaded_file)
    response=get_gemini_response(input_prompt,image_data)
    st.header("The Response is")
    st.write(response)