scrum-poker-internal/app/Http/Requests/ShowEmbeddedRoomRequest.php

<?php

namespace App\Http\Requests;

use App\Models\Player;
use App\Models\Room;
use Illuminate\Contracts\Validation\ValidationRule;
use Illuminate\Contracts\Validation\Validator;
use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Http\Exceptions\HttpResponseException;
use Illuminate\Validation\Rule;
use Inertia\Inertia;

class ShowEmbeddedRoomRequest extends FormRequest
{
    private const string PLAYER_NAME_TAKEN_MESSAGE = 'Dieser Anzeigename ist in dem Raum bereits vorhanden.';

    /**
     * Determine if the user is authorized to make this request.
     */
    public function authorize(): bool
    {
        return true;
    }

    protected function prepareForValidation(): void
    {
        $this->merge([
            'join_code' => $this->string('join_code')->trim()->upper()->toString(),
            'player_name' => $this->string('player_name')->trim()->toString(),
        ]);
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array<string, ValidationRule|array<mixed>|string>
     */
    public function rules(): array
    {
        return [
            'join_code' => [
                'bail',
                'required',
                'string',
                'size:6',
                Rule::exists(Room::class, 'join_code')->whereNull('deleted_at'),
            ],
            'player_name' => ['required', 'string', 'max:50'],
        ];
    }

    /** @return array<callable(Validator): void> */
    public function after(): array
    {
        return [
            function (Validator $validator): void {
                if ($validator->errors()->has('join_code')) {
                    return;
                }

                $room = Room::query()
                    ->where('join_code', $this->input('join_code'))
                    ->first();

                if ($room?->isClosed()) {
                    $validator->errors()->add('join_code', 'Dieser Raum ist geschlossen.');

                    return;
                }

                if ($room === null) {
                    return;
                }

                $sessionPlayerId = $this->session()->get("room_players.{$room->id}");
                $existingPlayer = null;

                if ($this->user() !== null) {
                    $existingPlayer = $room->players()
                        ->where('user_id', $this->user()->id)
                        ->first();
                }

                if ($existingPlayer === null && is_numeric($sessionPlayerId)) {
                    $existingPlayer = $room->players()->find((int) $sessionPlayerId);
                }

                $nameIsTaken = Player::query()
                    ->where('room_id', $room->id)
                    ->where('name', $this->input('player_name'))
                    ->when(
                        $existingPlayer !== null,
                        fn ($query) => $query->whereKeyNot($existingPlayer->id),
                    )
                    ->exists();

                if ($nameIsTaken) {
                    $validator->errors()->add(
                        'player_name',
                        self::PLAYER_NAME_TAKEN_MESSAGE,
                    );
                }
            },
        ];
    }

    public function messages(): array
    {
        return [
            'join_code.exists' => 'Dieser Raumcode existiert nicht.',
            'join_code.size' => 'Der Raumcode muss aus sechs Zeichen bestehen.',
            'player_name.required' => 'Bitte hinterlege in der Hub-App einen Anzeigenamen.',
        ];
    }

    protected function failedValidation(Validator $validator): never
    {
        $message = $validator->errors()->first();
        $showLoginAction = $this->user() === null
            && $message === self::PLAYER_NAME_TAKEN_MESSAGE;

        if ($showLoginAction) {
            $this->session()->put('url.intended', $this->fullUrl());
        }

        throw new HttpResponseException(
            Inertia::render('embedded/Error', [
                'message' => $message,
                'showLoginAction' => $showLoginAction,
            ])->toResponse($this)->setStatusCode(422),
        );
    }
}