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

app/Domains/Event/Services/EventDateInfoFormatter.php

@@ -18,9 +18,7 @@ class EventDateInfoFormatter
             $messages->push('Esta fecha fue cancelada.');
         }
 
-        $sourceDates = $changes
-            ->where('change_type', EventDateChangeType::Rescheduled)
-            ->where('destination_event_date_id', $eventDate->getKey())
+        $sourceDates = $this->reschedulesEndingAt($eventDate, $changes)
             ->pluck('previous_date')
             ->filter()
             ->map(fn ($date): string => $date->format('d/m/Y'))
@@ -34,4 +32,45 @@ class EventDateInfoFormatter
 
         return $messages->isEmpty() ? null : $messages->join(' ');
     }
+
+    /**
+     * Includes direct and intermediate reschedules that ultimately end at the
+     * displayed event date, while preserving the original change order.
+     *
+     * @param  Collection<int, EventDateChange>  $changes
+     * @return Collection<int, EventDateChange>
+     */
+    private function reschedulesEndingAt(EventDate $eventDate, Collection $changes): Collection
+    {
+        $eventDateId = $eventDate->getKey();
+        $reschedules = $changes->where('change_type', EventDateChangeType::Rescheduled);
+
+        if ($eventDateId === null) {
+            return $reschedules->where('destination_event_date_id', null);
+        }
+
+        $destinationIds = [(int) $eventDateId => true];
+
+        do {
+            $foundAncestor = false;
+
+            foreach ($reschedules as $change) {
+                $destinationId = $change->destination_event_date_id;
+                $sourceId = $change->source_event_date_id;
+
+                if ($destinationId === null || $sourceId === null) {
+                    continue;
+                }
+
+                if (isset($destinationIds[(int) $destinationId]) && ! isset($destinationIds[(int) $sourceId])) {
+                    $destinationIds[(int) $sourceId] = true;
+                    $foundAncestor = true;
+                }
+            }
+        } while ($foundAncestor);
+
+        return $reschedules
+            ->filter(fn (EventDateChange $change): bool => $change->destination_event_date_id !== null
+                && isset($destinationIds[(int) $change->destination_event_date_id]));
+    }
 }