project.py

import requests,sys,json

def get_leftover_ingredient():
    while True:
        ingredient=input("List ingredient you want to use-up and its amount separated by comma, with unit of measure at the end,separated by comma\nThe following units are accepted: piece,oz,lb,g,kg,cup,teaspoon,tablespoon,ml,l\nIngredient:").strip().split(",")
        if len(ingredient)==3:
            if check_ingredient_validity(ingredient[0])>0:
                if check_uom(ingredient[2])==True:
                    return ingredient
                    break


def check_ingredient_validity(ingredient):
    try:
        r = requests.get('https://api.spoonacular.com/food/ingredients/search?apiKey=f017f95bd138484ea337209a60528299&query='+ingredient)
        if next(iter(r.json().values()))!="failure":
            if r.json()["totalResults"]==0:
                return False
            else:
                id=(r.json()["results"][0]["id"])
                return id
        else:
            sys.exit("Access point limit exceeded. Aborting program. Try again later")
    except requests.RequestException:
        sys.exit("Connection to spoonacular.com error. Try again later")

def check_uom(uom):
    if uom.strip().lower() not in ["piece","oz","lb","g","kg","cup","teaspoon","tablespoon","ml","l"]:
        return False
    else:
        return True

def get_recipes_from_file(ingredient):
    with open(r'recipes.json') as rec:
        recipes = json.load(rec)
        where_used=[recipe["Name"] for recipe in recipes if ingredient in recipe["Ingredients"]]
        return where_used

def get_sugar_per_item(name,qty,uom):
    try:
        id=check_ingredient_validity(name)
        if id=="Point limit exceeded":
            sys.exit("Daily connection limit to spoonacular server exceeded. Aborting program. Try again later.")
        else:
            data = requests.get('https://api.spoonacular.com/food/ingredients/'+str(id)+'/information?apiKey=f017f95bd138484ea337209a60528299&amount='+qty+'&unit='+uom)
            json_data=data.json()
            amount = [nutrient['amount'] for nutrient in json_data["nutrition"]["nutrients"] if nutrient["name"] == "Sugar"]
            return amount
    except requests.RequestException:
        sys.exit("Connection to spoonacular server error. Aborting program. Try again later.")

def get_sugar_per_recipe(recipe_name):
    with open(r'recipes.json') as rec:
        recipes = json.load(rec)
        sugar_amount_matrix = [get_sugar_per_item(item,recipe["Ingredients"][item][0],recipe["Ingredients"][item][1]) for recipe in recipes for item in recipe['Ingredients'].keys() if recipe["Name"]==recipe_name]
        sugar_amount_value=sum(y for x in sugar_amount_matrix for y in x)
        return sugar_amount_value

def get_ingredient_balance_for_recipe(ingr,recipe):
    with open(r'recipes.json') as rec:
        recipes = json.load(rec)
        for item in recipes:
            for ingredient in item["Ingredients"].keys():
                if ingredient==ingr[0] and item["Name"]==recipe:
                    if ingr[2]==item["Ingredients"][ingredient][1]:
                        balance=[ingr[1]-item["Ingredients"][ingredient][0],"same uom",item["Ingredients"][ingredient][2]]
                    else:
                        balance=[item["Ingredients"][ingredient][0],"different uom",item["Ingredients"][ingredient][1]]
    return balance

def print_recipe(recipe):
    with open(r'recipes.json') as rec:
        recipes = json.load(rec)
        print("Recipe name:",recipe)
        print("\nGrams of sugar in the recipe:",get_sugar_per_recipe(recipe),"\n\nIngredients:")
        for item in recipes:
            if item["Name"]==recipe:
                for ingredient in item["Ingredients"].keys():
                    print("     ",ingredient,item["Ingredients"][ingredient][0],item["Ingredients"][ingredient][1])

def main():
    ingredient=get_leftover_ingredient()
    recipes=get_recipes_from_file(ingredient[0])
    ingredient_balance= [get_ingredient_balance_for_recipe(ingredient,recipe) for recipe in recipes]
    print("The ingredient is used in the following recipes:")
    for recipe in recipes:
        print(recipe)
        balance=get_ingredient_balance_for_recipe(ingredient,recipe)
        if balance[1]=="same uom":
            if balance[0]>0:
                print("You'll have",balance[0],"of",ingredient[0],"left after preparing",recipe)
            elif balance[1]<0:
                print("You'll need additional",-int[balance[1]],"of",ingredient[0],"for preparing",recipe)
            else:
                print("You have exactly the needed amount of",ingredient[0],"for preparing",recipe)
        else:
            print("You have",ingredient[1],ingredient[2],"of",ingredient[0],"while",balance[0],balance[2],"is needed\n" )

main()