nutri.py

### Nutrition Management APP 
from dotenv import load_dotenv

load_dotenv() 
import streamlit as st
import os
import google.generativeai as genai
from PIL import Image

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

## Function to load Google Gemini Pro Vision API And get response

def get_gemini_repsonse(input,image,prompt):
    model=genai.GenerativeModel('gemini-2.5-pro')
    response=model.generate_content([input,image[0],prompt])
    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="NutriScan App")

st.header("NutriScan 🥗")
st.write("Revitalize Your Wellness, One Bite at a Time with NutriScan!😋")
input=st.text_input("Let me Check : ",key="input")
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_container_width = True)


submit=st.button("Tell me the total calories")

input_prompt="""
               You are an expert in nutritionist where you need to see the food items from the image
               and calculate the total calories, also provide the details of every food items with calories intake
               and do not mention that you are an AI can can't check the nutrition value and give response in below format

               1. Item 1 - no of calories   
               2. Item 2 - no of calories
               ----
               ----


"""


## If submit button is clicked

if submit:
    image_data=input_image_setup(uploaded_file)
    response=get_gemini_repsonse(input_prompt,image_data,input)
    st.subheader("Here you go:🌿🤏")
    st.write(response)