refactor(ticket): implement fixed validity time generation for event date and time windows in TicketGeneratorService

app/Domains/Ticket/Services/TicketGeneratorService.php

@@ -5,6 +5,7 @@ namespace App\Domains\Ticket\Services;
 use App\Domains\Auth\Models\User;
 use App\Domains\Catalog\Models\CatalogItem;
 use App\Domains\Catalog\Models\Variant;
+use App\Domains\Ticket\Enums\ValidityTimeType;
 use App\Domains\Ticket\Exceptions\TicketGenerationException;
 use App\Domains\Ticket\Models\Ticket;
 use App\Domains\Ticket\Models\ValidityTime;
@@ -34,14 +35,21 @@ class TicketGeneratorService
                 $quantity,
                 $sourceVariantId,
             );
+            $fixedValidityTimes = [];
 
             return $targets->map(function (array $target) use (
+                &$fixedValidityTimes,
                 $sourcePurchaseId,
                 $user,
             ): Ticket {
                 $item = $target['catalog_item'];
                 $variant = $target['variant'];
                 $validityTime = $this->resolveValidityTime($item, $variant);
+                $validityTime = $this->materializeEventDateValidityTime(
+                    $variant,
+                    $validityTime,
+                    $fixedValidityTimes,
+                );
 
                 return Ticket::query()->create([
                     'tenant_code' => $item->tenant_code,
@@ -168,4 +176,56 @@ class TicketGeneratorService
 
         return $validityTimes->first();
     }
+
+    /**
+     * Convert a recurring time window into the fixed date and time purchased by
+     * the customer. Equal tickets generated together share the same snapshot.
+     *
+     * @param  array<string, ValidityTime>  $fixedValidityTimes
+     */
+    private function materializeEventDateValidityTime(
+        ?Variant $variant,
+        ?ValidityTime $validityTime,
+        array &$fixedValidityTimes,
+    ): ?ValidityTime {
+        if (
+            $variant === null
+            || $validityTime === null
+            || $validityTime->type !== ValidityTimeType::TimeWindow
+        ) {
+            return $validityTime;
+        }
+
+        $variant->loadMissing('eventDate');
+        $eventDate = $variant->eventDate;
+
+        if ($eventDate === null) {
+            return $validityTime;
+        }
+
+        $cacheKey = $eventDate->getKey().':'.$validityTime->getKey();
+
+        if (isset($fixedValidityTimes[$cacheKey])) {
+            return $fixedValidityTimes[$cacheKey];
+        }
+
+        $startsAt = $validityTime->startsAt($eventDate->date);
+        $expiresAt = $validityTime->expiresAt($eventDate->date);
+
+        if (
+            $startsAt !== null
+            && $expiresAt !== null
+            && $expiresAt->lessThanOrEqualTo($startsAt)
+        ) {
+            $expiresAt = $expiresAt->addDay();
+        }
+
+        return $fixedValidityTimes[$cacheKey] = ValidityTime::query()->create([
+            'type' => ValidityTimeType::FixedWindow,
+            'start_time' => null,
+            'end_time' => null,
+            'fixed_starts_at' => $startsAt,
+            'fixed_expires_at' => $expiresAt,
+        ]);
+    }
 }