63 lines
2.1 KiB
PHP
63 lines
2.1 KiB
PHP
<?php
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namespace App\Domains\Purchase\Services;
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use App\Domains\Catalog\Models\CatalogItem;
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use App\Domains\Purchase\Models\Purchase;
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use App\Domains\Purchase\Models\PurchaseItem;
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use Illuminate\Support\Facades\DB;
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use Illuminate\Validation\ValidationException;
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class UserPurchaseLimitService
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{
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public function assertCanPurchase(
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CatalogItem $catalogItem,
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int $userId,
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int $requestedQuantity,
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?int $excludedPurchaseId = null,
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string $field = 'quantity',
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): void {
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DB::transaction(function () use (
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$catalogItem,
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$userId,
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$requestedQuantity,
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$excludedPurchaseId,
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$field,
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): void {
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/** @var CatalogItem $catalogItem */
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$catalogItem = CatalogItem::query()
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->whereKey($catalogItem->getKey())
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->lockForUpdate()
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->firstOrFail();
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$limit = $catalogItem->max_units_per_user;
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if ($limit === null) {
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return;
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}
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$purchasedQuantity = (int) PurchaseItem::query()
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->where('source_catalog_item_id', $catalogItem->getKey())
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->whereHas('purchase', function ($query) use ($userId, $excludedPurchaseId): void {
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$query
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->where('user_id', $userId)
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->whereIn('status', [
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Purchase::STATUS_CREATED,
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Purchase::STATUS_PENDING_PAYMENT,
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Purchase::STATUS_PAID,
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])
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->when(
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$excludedPurchaseId !== null,
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fn ($query) => $query->whereKeyNot($excludedPurchaseId),
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);
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})
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->sum('cantidad');
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if ($purchasedQuantity + $requestedQuantity > $limit) {
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throw ValidationException::withMessages([
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$field => __('api.purchase_limit.exceeded', ['max' => $limit]),
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]);
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}
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});
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}
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}
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