wip: refactor to cards with individual participant forms

src/Service/ParticipantCardDataService.php

@@ -0,0 +1,115 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Service;
+
+use App\Form\Model\BookingDto;
+
+/**
+ * Extracts card display data for participants in card-based booking flows.
+ *
+ * Provides participant name, room assignment, and individual pricing for
+ * display in the card overview UI.
+ */
+class ParticipantCardDataService
+{
+    public function __construct(
+        private readonly BookingPriceCalculatorService $priceCalculator,
+    ) {
+    }
+
+    /**
+     * Get card data for a single participant.
+     *
+     * @return array{name: string, roomName: string, price: string}
+     */
+    public function getCardData(BookingDto $bookingDto, int $index): array
+    {
+        $participant = $bookingDto->participants[$index] ?? null;
+
+        if (null === $participant) {
+            throw new \InvalidArgumentException(sprintf('Participant at index %d does not exist', $index));
+        }
+
+        // Extract participant name with fallback
+        $name = $this->getParticipantName($participant, $index);
+
+        // Extract room name
+        $roomName = $this->getRoomName($bookingDto, $participant);
+
+        // Calculate and format individual price
+        $price = $this->getFormattedPrice($bookingDto, $index);
+
+        return [
+            'name' => $name,
+            'roomName' => $roomName,
+            'price' => $price,
+        ];
+    }
+
+    /**
+     * Get card data for all participants.
+     *
+     * @return array<int, array{name: string, roomName: string, price: string}>
+     */
+    public function getAllCardsData(BookingDto $bookingDto): array
+    {
+        $cardsData = [];
+
+        foreach ($bookingDto->participants as $index => $participant) {
+            $cardsData[$index] = $this->getCardData($bookingDto, $index);
+        }
+
+        return $cardsData;
+    }
+
+    /**
+     * Get participant name with fallback to generic label.
+     */
+    private function getParticipantName(object $participant, int $index): string
+    {
+        $firstName = $participant->firstName ?? '';
+        $lastName = $participant->lastName ?? '';
+
+        $name = trim($firstName . ' ' . $lastName);
+
+        if ('' === $name) {
+            return sprintf('Teilnehmer %d', $index + 1);
+        }
+
+        return $name;
+    }
+
+    /**
+     * Get room name from travel model.
+     */
+    private function getRoomName(BookingDto $bookingDto, object $participant): string
+    {
+        $roomId = $participant->assignedRoomId ?? null;
+
+        if (null === $roomId) {
+            return 'Kein Zimmer zugewiesen';
+        }
+
+        $room = $bookingDto->travel->getRoomById($roomId);
+
+        if (null === $room) {
+            return 'Unbekanntes Zimmer';
+        }
+
+        return $room->name;
+    }
+
+    /**
+     * Calculate and format individual participant price.
+     */
+    private function getFormattedPrice(BookingDto $bookingDto, int $index): string
+    {
+        $prices = $this->priceCalculator->calculateAllParticipantIndividualPrices($bookingDto);
+
+        $price = $prices[$index] ?? 0.0;
+
+        return number_format($price, 2, ',', '.') . ' €';
+    }
+}