feat(event): implement EventDateGroupingService to group historical dates and update related resources and tests

2026-09-15 16:28:39 -03:00
parent 51937ca93f
commit 24d87623cc
7 changed files with 293 additions and 4 deletions
--- a/app/Domains/Event/Services/EventDateGroupingService.php
+++ b/app/Domains/Event/Services/EventDateGroupingService.php
@@ -0,0 +1,101 @@
+<?php
+
+namespace App\Domains\Event\Services;
+
+use App\Domains\Event\Models\EventDate;
+use Illuminate\Database\Eloquent\Collection as EloquentCollection;
+use Illuminate\Support\Collection;
+
+class EventDateGroupingService
+{
+    /**
+     * Groups every historical date under its final active destination.
+     *
+     * @param  Collection<int, EventDate>  $dates
+     * @return Collection<int, EventDate>
+     */
+    public function group(Collection $dates): Collection
+    {
+        $byId = $dates->keyBy(fn (EventDate $date): int => (int) $date->getKey());
+        $groups = collect();
+
+        foreach ($dates as $date) {
+            $destination = $this->finalDestination($date, $byId);
+            $key = (int) $destination->getKey();
+
+            if (! $groups->has($key)) {
+                $groups->put($key, [
+                    'destination' => $destination,
+                    'rescheduled' => collect(),
+                ]);
+            }
+
+            if (! $date->is($destination)) {
+                $group = $groups->get($key);
+                $historicalDate = clone $date;
+                $historicalDate->setAttribute(
+                    'rescheduled_to_event_date_id',
+                    $destination->getKey(),
+                );
+                $group['rescheduled']->push($historicalDate);
+                $groups->put($key, $group);
+            }
+        }
+
+        return $groups
+            ->map(function (array $group): EventDate {
+                /** @var EventDate $destination */
+                $destination = clone $group['destination'];
+                /** @var Collection<int, EventDate> $rescheduled */
+                $rescheduled = $group['rescheduled'];
+                $destination->setRelation(
+                    'adminRescheduledDates',
+                    new EloquentCollection($rescheduled->sort($this->dateSorter())->values()->all()),
+                );
+
+                return $destination;
+            })
+            ->sort($this->dateSorter())
+            ->values();
+    }
+
+    /** @param Collection<int, EventDate> $byId */
+    private function finalDestination(EventDate $date, Collection $byId): EventDate
+    {
+        $current = $date;
+        $visited = collect();
+
+        while ($current->rescheduled_to_event_date_id !== null) {
+            $currentId = (int) $current->getKey();
+
+            if ($visited->contains($currentId)) {
+                break;
+            }
+
+            $visited->push($currentId);
+            $destination = $byId->get((int) $current->rescheduled_to_event_date_id);
+
+            if (! $destination instanceof EventDate) {
+                break;
+            }
+
+            $current = $destination;
+        }
+
+        return $current;
+    }
+
+    /** @return callable(EventDate, EventDate): int */
+    private function dateSorter(): callable
+    {
+        return fn (EventDate $left, EventDate $right): int => [
+            $left->date->format('Y-m-d'),
+            $left->time_start,
+            $left->getKey(),
+        ] <=> [
+            $right->date->format('Y-m-d'),
+            $right->time_start,
+            $right->getKey(),
+        ];
+    }
+}