mirror of https://github.com/kcal-app/kcal.git
80 lines
2.1 KiB
PHP
80 lines
2.1 KiB
PHP
<?php
|
|
|
|
namespace App\Support;
|
|
|
|
use App\Models\Food;
|
|
|
|
/**
|
|
* TODO: Refactor for more general use.
|
|
*/
|
|
class Nutrients
|
|
{
|
|
public static array $all = [
|
|
'calories',
|
|
'fat',
|
|
'cholesterol',
|
|
'sodium',
|
|
'carbohydrates',
|
|
'protein',
|
|
];
|
|
|
|
public static array $units = [
|
|
['value' => 'tsp', 'label' => 'tsp.'],
|
|
['value' => 'tbsp', 'label' => 'tbsp.'],
|
|
['value' => 'cup', 'label' => 'cup'],
|
|
['value' => 'oz', 'label' => 'oz'],
|
|
['value' => 'gram', 'label' => 'grams'],
|
|
['value' => 'serving', 'label' => 'servings'],
|
|
];
|
|
|
|
public static function calculateFoodNutrientMultiplier(
|
|
Food $food,
|
|
float $amount,
|
|
string|null $fromUnit
|
|
): float {
|
|
if ($fromUnit === 'oz') {
|
|
return $amount * 28.349523125 / $food->serving_weight;
|
|
}
|
|
elseif ($fromUnit === 'serving') {
|
|
return $amount;
|
|
}
|
|
elseif ($fromUnit === 'gram') {
|
|
return $amount / $food->serving_weight;
|
|
}
|
|
|
|
if (
|
|
empty($fromUnit)
|
|
|| empty($food->serving_unit)
|
|
|| $food->serving_unit === $fromUnit
|
|
) {
|
|
$multiplier = 1;
|
|
}
|
|
elseif ($fromUnit === 'tsp') {
|
|
$multiplier = match ($food->serving_unit) {
|
|
'tbsp' => 1/3,
|
|
'cup' => 1/48,
|
|
default => throw new \DomainException(),
|
|
};
|
|
}
|
|
elseif ($fromUnit === 'tbsp') {
|
|
$multiplier = match ($food->serving_unit) {
|
|
'tsp' => 3,
|
|
'cup' => 1/16,
|
|
default => throw new \DomainException(),
|
|
};
|
|
}
|
|
elseif ($fromUnit === 'cup') {
|
|
$multiplier = match ($food->serving_unit) {
|
|
'tsp' => 48,
|
|
'tbsp' => 16,
|
|
default => throw new \DomainException(),
|
|
};
|
|
}
|
|
else {
|
|
throw new \DomainException("Unhandled unit combination: {$fromUnit}, {$food->serving_unit} ({$food->name})");
|
|
}
|
|
|
|
return $multiplier / $food->serving_size * $amount;
|
|
}
|
|
}
|