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import os
import json
from typing import List, Dict, Any
# Nutrient thresholds for solids and liquids
thresholds = {
'solid': {
'calories': 250,
'sugar': 3,
'salt': 625
},
'liquid': {
'calories': 70,
'sugar': 2,
'salt': 175
}
}
# Function to calculate percentage difference from threshold
def calculate_percentage_difference(value: float, threshold: float) -> float:
if threshold is None:
return None # For nutrients without a threshold
return ((value - threshold) / threshold) * 100
# Function to analyze nutrients and calculate differences
async def analyze_nutrients(product_type: str, calories: float, sugar: float, salt: float, serving_size: float):
threshold_data = thresholds.get(product_type)
if not threshold_data:
raise HTTPException(status_code=400, detail=f"Invalid product type: {product_type}")
# Calculate scaled values based on serving size
scaled_calories = (calories / serving_size) * 100 if calories is not None else None
scaled_sugar = (sugar / serving_size) * 100 if sugar is not None else None
scaled_salt = (salt / serving_size) * 100 if salt is not None else None
nutrient_analysis = {}
nutrient_analysis_str = ""
# Analyze calories
if scaled_calories is not None:
nutrient_analysis['calories'] = {
'value': scaled_calories,
'threshold': threshold_data['calories'],
'difference': scaled_calories - threshold_data['calories'],
'percentageDiff': calculate_percentage_difference(scaled_calories, threshold_data['calories'])
}
if nutrient_analysis['calories']['percentageDiff'] > 0:
nutrient_analysis_str += f"Calories exceed the ICMR-defined threshold by {nutrient_analysis['calories']['percentageDiff']}%."
else:
nutrient_analysis_str += f"Calories are {abs(nutrient_analysis['calories']['percentageDiff'])}% below the ICMR-defined threshold."
# Analyze sugar
if scaled_sugar is not None:
nutrient_analysis['sugar'] = {
'value': scaled_sugar,
'threshold': threshold_data['sugar'],
'difference': scaled_sugar - threshold_data['sugar'],
'percentageDiff': calculate_percentage_difference(scaled_sugar, threshold_data['sugar'])
}
if nutrient_analysis['sugar']['percentageDiff'] > 0:
nutrient_analysis_str += f" Sugar exceeds the ICMR-defined threshold by {nutrient_analysis['sugar']['percentageDiff']}%."
else:
nutrient_analysis_str += f"Sugar is {abs(nutrient_analysis['sugar']['percentageDiff'])}% below the ICMR-defined threshold."
# Analyze salt
if scaled_salt is not None:
nutrient_analysis['salt'] = {
'value': scaled_salt,
'threshold': threshold_data['salt'],
'difference': scaled_salt - threshold_data['salt'],
'percentageDiff': calculate_percentage_difference(scaled_salt, threshold_data['salt'])
}
if nutrient_analysis['salt']['percentageDiff'] > 0:
nutrient_analysis_str += f" Salt exceeds the ICMR-defined threshold by {nutrient_analysis['salt']['percentageDiff']}%."
else:
nutrient_analysis_str += f"Salt is {abs(nutrient_analysis['salt']['percentageDiff'])}% below the ICMR-defined threshold."
return {"analysis": nutrient_analysis_str}
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