<?php

declare(strict_types=1);

namespace App\Http\Controllers\Api\V1;

use App\Http\Controllers\Controller;
use App\Models\Event;
use App\Models\FestivalSection;
use App\Models\TimeSlot;
use Illuminate\Http\JsonResponse;

final class PublicRegistrationDataController extends Controller
{
    public function __invoke(string $slug): JsonResponse
    {
        $event = Event::where('slug', $slug)
            ->where('status', 'registration_open')
            ->first();

        if ($event === null) {
            abort(404, 'Event not found or not accepting registrations.');
        }

        $festivalEvent = $event->isSubEvent() ? $event->parent : $event;

        $sectionQuery = FestivalSection::where('event_id', $festivalEvent->id)
            ->where(function ($query) {
                $query->where('type', '!=', 'cross_event')
                    ->orWhereNull('type');
            })
            ->ordered();

        if ($festivalEvent->isFestival()) {
            $childIds = $festivalEvent->children()->pluck('id');
            $sectionQuery->orWhere(function ($query) use ($childIds) {
                $query->whereIn('event_id', $childIds)
                    ->where(function ($q) {
                        $q->where('type', '!=', 'cross_event')
                            ->orWhereNull('type');
                    });
            });
        }

        $sections = $sectionQuery->get(['id', 'name', 'category', 'icon']);

        $timeSlots = $festivalEvent->getAllRelevantTimeSlots()
            ->where('person_type', 'VOLUNTEER')
            ->values();

        return response()->json([
            'data' => [
                'event' => [
                    'id' => $festivalEvent->id,
                    'name' => $festivalEvent->name,
                    'start_date' => $festivalEvent->start_date->toDateString(),
                    'end_date' => $festivalEvent->end_date->toDateString(),
                    'organisation_id' => $festivalEvent->organisation_id,
                ],
                'sections' => $sections->map(fn (FestivalSection $section) => [
                    'id' => $section->id,
                    'name' => $section->name,
                    'category' => $section->category,
                    'icon' => $section->icon,
                ]),
                'time_slots' => $timeSlots->map(fn (TimeSlot $slot) => [
                    'id' => $slot->id,
                    'name' => $slot->name,
                    'date' => $slot->date->toDateString(),
                    'start_time' => $slot->start_time,
                    'end_time' => $slot->end_time,
                    'duration_hours' => $slot->duration_hours,
                ]),
            ],
        ]);
    }
}