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feat(catalog): implement maximum addable quantity logic and user quota sharing across variants

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This commit is contained in:
ncoronel
2026-08-19 16:43:51 -03:00
parent d97cc12af6
commit 8537d2ed0a
10 changed files with 260 additions and 26 deletions
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78
app/Domains/Purchase/Services/UserPurchaseLimitService.php
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@@ -6,6 +6,7 @@ use App\Domains\Cart\Models\CartItem;
use App\Domains\Catalog\Models\CatalogItem;
use App\Domains\Purchase\Models\Purchase;
use App\Domains\Purchase\Models\PurchaseItem;
use Illuminate\Support\Collection;
use Illuminate\Support\Facades\DB;
use Illuminate\Validation\ValidationException;
@@ -16,6 +17,7 @@ class UserPurchaseLimitService
int $userId,
int $requestedQuantity,
?int $excludedPurchaseId = null,
?int $excludedCartId = null,
string $field = 'quantity',
): void {
DB::transaction(function () use (
@@ -23,6 +25,7 @@ class UserPurchaseLimitService
$userId,
$requestedQuantity,
$excludedPurchaseId,
$excludedCartId,
$field,
): void {
/** @var CatalogItem $catalogItem */
@@ -70,11 +73,84 @@ class UserPurchaseLimitService
})
->sum('cantidad');
if ($purchasedQuantity + $checkoutQuantity + $requestedQuantity > $limit) {
$reservedCartQuantity = (int) CartItem::query()
->where('catalog_item_id', $catalogItem->getKey())
->whereHas('cart', fn ($query) => $query
->where('user_id', $userId)
->where('status', 'active')
->when(
$excludedCartId !== null,
fn ($query) => $query->whereKeyNot($excludedCartId),
))
->whereHas('stockReservations', fn ($query) => $query->where('status', 'active'))
->sum('cantidad');
if ($purchasedQuantity + $checkoutQuantity + $reservedCartQuantity + $requestedQuantity > $limit) {
throw ValidationException::withMessages([
$field => __('api.purchase_limit.exceeded', ['max' => $limit]),
]);
}
});
}
/**
* @param Collection<int, CatalogItem> $catalogItems
* @return Collection<int, int|null>
*/
public function remainingByCatalogItem(Collection $catalogItems, ?int $userId): Collection
{
$limits = $catalogItems
->unique('id')
->mapWithKeys(fn (CatalogItem $item): array => [$item->getKey() => $item->max_units_per_user]);
if ($userId === null || $limits->filter(fn ($limit) => $limit !== null)->isEmpty()) {
return $limits->map(fn (): ?int => null);
}
$ids = $limits->keys();
$purchased = PurchaseItem::query()
->selectRaw('source_catalog_item_id, SUM(cantidad) AS quantity')
->whereIn('source_catalog_item_id', $ids)
->whereHas('purchase', fn ($query) => $query
->where('user_id', $userId)
->whereIn('status', [
Purchase::STATUS_CREATED,
Purchase::STATUS_PENDING_PAYMENT,
Purchase::STATUS_PAID,
]))
->groupBy('source_catalog_item_id')
->pluck('quantity', 'source_catalog_item_id');
$checkout = CartItem::query()
->selectRaw('catalog_item_id, SUM(cantidad) AS quantity')
->whereIn('catalog_item_id', $ids)
->whereHas('cart.purchases', fn ($query) => $query
->where('user_id', $userId)
->whereIn('status', [Purchase::STATUS_CREATED, Purchase::STATUS_PENDING_PAYMENT])
->whereDoesntHave('items'))
->groupBy('catalog_item_id')
->pluck('quantity', 'catalog_item_id');
$reserved = CartItem::query()
->selectRaw('catalog_item_id, SUM(cantidad) AS quantity')
->whereIn('catalog_item_id', $ids)
->whereHas('cart', fn ($query) => $query
->where('user_id', $userId)
->where('status', 'active'))
->whereHas('stockReservations', fn ($query) => $query->where('status', 'active'))
->groupBy('catalog_item_id')
->pluck('quantity', 'catalog_item_id');
return $limits->map(function (?int $limit, int $catalogItemId) use ($purchased, $checkout, $reserved): ?int {
if ($limit === null) {
return null;
}
$used = (int) ($purchased[$catalogItemId] ?? 0)
+ (int) ($checkout[$catalogItemId] ?? 0)
+ (int) ($reserved[$catalogItemId] ?? 0);
return max(0, $limit - $used);
});
}
}