wip: booking process, refactor participant room assignment logic

2025-07-22 08:52:13 +02:00
parent b3c633dccb
commit 2f5b855bae
16 changed files with 216 additions and 94 deletions
@@ -0,0 +1,120 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Form\ChoiceLoader;
+
+use App\Form\DataAdapters\ParticipantDataAdapter;
+use Symfony\Component\Form\ChoiceList\ChoiceListInterface;
+use Symfony\Component\Form\ChoiceList\Factory\ChoiceListFactoryInterface;
+use Symfony\Component\Form\ChoiceList\Loader\ChoiceLoaderInterface;
+
+/**
+ * Choice loader for participant room assignments.
+ *
+ * Generates room choices for each participant based on availability,
+ * current assignments, and room capacity constraints. This loader
+ * ensures participants can only select rooms with available capacity
+ * while maintaining their current assignment if applicable.
+ */
+class ParticipantRoomChoiceLoader implements ChoiceLoaderInterface
+{
+    private ?ChoiceListInterface $choiceList = null;
+
+    public function __construct(
+        private readonly ChoiceListFactoryInterface $factory,
+        private readonly ParticipantDataAdapter $adapter,
+        private readonly array $selectedRooms,
+        private readonly int $participantIndex,
+    ) {
+    }
+
+    public function loadChoiceList(?callable $value = null): ChoiceListInterface
+    {
+        if (null === $this->choiceList) {
+            $choices = $this->generateRoomChoicesForParticipant();
+            $this->choiceList = $this->factory->createListFromChoices($choices, $value);
+        }
+
+        return $this->choiceList;
+    }
+
+    public function loadChoicesForValues(array $values, ?callable $value = null): array
+    {
+        if (empty($values)) {
+            return [];
+        }
+
+        return $this->loadChoiceList($value)->getChoicesForValues($values);
+    }
+
+    public function loadValuesForChoices(array $choices, ?callable $value = null): array
+    {
+        if (empty($choices)) {
+            return [];
+        }
+
+        return $this->loadChoiceList($value)->getValuesForChoices($choices);
+    }
+
+    /**
+     * Generates room choices for the specific participant.
+     *
+     * @return array<string, int>
+     */
+    private function generateRoomChoicesForParticipant(): array
+    {
+        $roomOccupancy = $this->calculateRoomOccupancy();
+        $participantRoomChoices = [];
+        $assignedRoomId = $this->getParticipantAssignedRoomId();
+
+        foreach ($this->selectedRooms as $roomSelection) {
+            $currentOccupancy = $roomOccupancy[$roomSelection->roomId] ?? 0;
+
+            // If this participant is already assigned to this room, exclude them from occupancy count
+            $adjustedOccupancy = $currentOccupancy;
+            if ($assignedRoomId === $roomSelection->roomId) {
+                --$adjustedOccupancy;
+            }
+
+            $remainingCapacity = $roomSelection->minPax - $adjustedOccupancy;
+
+            // Include room if it has capacity OR if it's the participant's current assignment
+            if ($remainingCapacity > 0 || $assignedRoomId === $roomSelection->roomId) {
+                $participantRoomChoices[$roomSelection->roomLabel] = $roomSelection->roomId;
+            }
+        }
+
+        return $participantRoomChoices;
+    }
+
+    /**
+     * Calculates room occupancy based on participant assignments.
+     *
+     * @return array<int, int>
+     */
+    private function calculateRoomOccupancy(): array
+    {
+        $roomOccupancy = [];
+
+        foreach ($this->adapter->getParticipants() as $participant) {
+            $assignedRoomId = $this->adapter->getAssignedRoomId($participant);
+            if (null !== $assignedRoomId) {
+                $roomOccupancy[$assignedRoomId] = ($roomOccupancy[$assignedRoomId] ?? 0) + 1;
+            }
+        }
+
+        return $roomOccupancy;
+    }
+
+    /**
+     * Gets the assigned room ID for the current participant.
+     */
+    private function getParticipantAssignedRoomId(): ?int
+    {
+        $participants = $this->adapter->getParticipants();
+        $participant = $participants[$this->participantIndex] ?? null;
+
+        return null !== $participant ? $this->adapter->getAssignedRoomId($participant) : null;
+    }
+}