/**
* Buckets for each potential offer, keeping duplicate offers.
*
* @throws \InvalidArgumentException
*
* @return Collection|PotentialOffer[]
*/
private function potentials() : Collection
{
return $this->components->map(function (OfferComponent $component) {
return $component->product();
})->filter(function (Product $product) {
return $product->offers->count();
})->reduce(function (Collection $potentials, Product $product) {
return $potentials->push(new PotentialOffer($product->offers->first()));
}, new Collection());
}
/**
* @return string
*/
public function listComponents() : string
{
$identifiers = $this->components->map(function (OfferComponent $component) {
return $component->product()->sku;
});
if ($identifiers->count() > 1) {
return sprintf('%s and %s', $identifiers->slice(0, -1)->implode(', '), $identifiers->last());
}
return $identifiers->pop();
}
