KTV/app/Http/Resources/RoomResource.php

<?php

namespace App\Http\Resources;

use Illuminate\Http\Request;
use Illuminate\Http\Resources\Json\JsonResource;

class RoomResource extends JsonResource
{
    /**
     * Transform the resource into an array.
     *
     * @return array<string, mixed>
     */
    public function toArray(Request $request): array
    {
        $array = parent::toArray($request);
        $array['started_at'] = $this->formatTaipei($this->started_at);
        $array['ended_at'] = $this->formatTaipei($this->ended_at);
        return $array;
    }

    protected function formatTaipei(?Carbon $value): ?string
    {
        return $value ? $value->timezone('Asia/Taipei')->format('Y-m-d H:i:s') : null;
    }
}