api.so-manager-dev.com/app/Http/Requests/Api/SubscriptionChargeRequest.php

<?php

namespace App\Http\Requests\Api;

use Carbon\Carbon;
use Illuminate\Contracts\Validation\Validator;
use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Http\Exceptions\HttpResponseException;

/**
 * 継続課金請求リクエストバリデーション
 */
class SubscriptionChargeRequest extends FormRequest
{
    public function authorize(): bool
    {
        return true;
    }

    /**
     * バリデーションルール
     */
    public function rules(): array
    {
        return [
            'member_id' => ['required', 'string', 'max:20'],
            'amount' => ['required', 'integer', 'min:1'],
            'execute_date' => ['required', 'string', 'regex:/^\d{8}$/'],
            'contract_id' => ['required', 'string', 'max:20'],
            'card_seq' => ['nullable', 'integer'],
        ];
    }

    /**
     * バリデーション失敗時のJSONエラーレスポンス
     */
    protected function failedValidation(Validator $validator): void
    {
        throw new HttpResponseException(response()->json([
            'error' => [
                'code' => 'INVALID_REQUEST',
                'message' => $validator->errors()->first(),
            ]
        ], 400));
    }

    /**
     * 追加バリデーション（execute_dateの実在日チェック）
     */
    public function withValidator($validator): void
    {
        $validator->after(function ($validator) {
            $executeDate = $this->input('execute_date');
            if (!$executeDate) {
                return;
            }

            try {
                Carbon::createFromFormat('Ymd', $executeDate, 'Asia/Tokyo');
                $errors = Carbon::getLastErrors() ?: ['warning_count' => 0, 'error_count' => 0];
                if (($errors['warning_count'] ?? 0) > 0 || ($errors['error_count'] ?? 0) > 0) {
                    $validator->errors()->add('execute_date', 'execute_dateの日付が不正です。');
                }
            } catch (\Throwable) {
                $validator->errors()->add('execute_date', 'execute_dateの日付が不正です。');
            }
        });
    }
}