ladill-events/app/Services/Events/EventProgrammeService.php

<?php

namespace App\Services\Events;

use App\Models\QrCode;
use Illuminate\Support\Collection;

class EventProgrammeService
{
    /** @return array{title: string, days: list<array<string, mixed>>}|null */
    public function snapshot(?QrCode $programme): ?array
    {
        if (! $programme || $programme->type !== QrCode::TYPE_ITINERARY) {
            return null;
        }

        $content = $programme->content();

        return [
            'title' => (string) ($content['title'] ?? $programme->label),
            'subtitle' => (string) ($content['subtitle'] ?? ''),
            'location' => (string) ($content['location'] ?? ''),
            'days' => array_values((array) ($content['days'] ?? [])),
        ];
    }

    /** @param  list<string>  $itemRefs */
    public function itemsForRefs(?array $snapshot, array $itemRefs): array
    {
        if (! $snapshot) {
            return [];
        }

        $refs = array_flip($itemRefs);
        $matched = [];

        foreach ((array) ($snapshot['days'] ?? []) as $day) {
            foreach ((array) ($day['items'] ?? []) as $item) {
                $ref = (string) ($item['ref'] ?? '');
                if ($ref !== '' && isset($refs[$ref])) {
                    $matched[] = $item;
                }
            }
        }

        return $matched;
    }

    /** @param  list<array<string, mixed>>  $items */
    public function hostsFromItems(array $items): array
    {
        return collect($items)
            ->pluck('host')
            ->filter(fn ($host) => is_string($host) && trim($host) !== '')
            ->map(fn ($host) => trim($host))
            ->unique()
            ->values()
            ->all();
    }

    /** @return Collection<int, QrCode> */
    public function eventsLinkedToProgramme(QrCode $programme): Collection
    {
        if ($programme->type !== QrCode::TYPE_ITINERARY) {
            return collect();
        }

        return QrCode::query()
            ->where('user_id', $programme->user_id)
            ->where('type', QrCode::TYPE_EVENT)
            ->get()
            ->filter(fn (QrCode $event) => (int) ($event->content()['programme_qr_id'] ?? 0) === $programme->id);
    }
}