export function mealToShoppingListSources(meal) {
    const sources = [];
    for (const recipe of meal.recipes) {
        for (const ingredient of recipe.ingredients) {
            sources.push({ ingredient, meal, recipe, });
        }
    }

    for (const ingredient of meal.extra_ingredients) {
        sources.push({ ingredient, meal, });
    }

    return sources;
}

export function removeMealFromShoppingListSources(sources, meal) {
    return sources.filter(source => source.meal.id !== meal.id);
}

export function groupByProduct(sources) {
    const grouped = {};
    for (const source of sources) {
        if (!grouped[source.ingredient.product.id]) {
            grouped[source.ingredient.product.id] = {
                product: source.ingredient.product,
                sources: [],
            };
        }

        grouped[source.ingredient.product.id].sources.push(source);
    }

    return Object.values(grouped);
}