public static function addFood($id, &$shoppingArray, $quantity = 0)
{
if ($id == 0) {
return array();
}
// Prepare needed data
$food = Food::getFood($id);
$foodComponents = FoodComponent::getComponents($id);
if (sizeof($foodComponents) == 0) {
// Default to serving size in this case
if ($quantity == 0) {
$quantity = $food["quantity"];
}
// No components, just add entry for self
self::addShopping($shoppingArray, $id, $food, $quantity);
} else {
// Default to recipe quantity in this case
if ($quantity == 0) {
$quantity = $food["recipeQuantity"];
}
if ($quantity == 0) {
$quantity = $food["quantity"];
}
// Return shopping for each component
foreach ($foodComponents as $foodComponent) {
// Determine component quantity needed
if ($food["recipeQuantity"] == 0) {
$food["recipeQuantity"] = $food["quantity"];
}
if ($food["recipeQuantity"] == 0) {
$food["recipeQuantity"] = 1;
}
$componentQuantity = $foodComponent["quantity"] * $quantity / $food["recipeQuantity"];
self::addFood($foodComponent["componentId"], $shoppingArray, $componentQuantity);
}
}
}
public static function calculateComponents($parentId)
{
$returnArray = array();
if ($parentId == 0) {
return $returnArray;
}
// Prepare needed data
$parentFood = Food::getFood($parentId);
$foodComponents = FoodComponent::getComponents($parentId);
// Calculate nutrition for each component
foreach ($foodComponents as $foodComponent) {
// Determine quantity needed for one serving of parent food
if ($parentFood["recipeQuantity"] == 0) {
$parentFood["recipeQuantity"] = 1;
}
$quantity = $foodComponent["quantity"] * $parentFood["quantity"] / $parentFood["recipeQuantity"];
// Calculate component nutrition at that quantity
$componentNutrition = self::calculate($foodComponent["componentId"], $quantity);
// Add component nutrition to output array
$returnArray[] = $componentNutrition;
}
return $returnArray;
}
