services_core/app/Http/Resources/Material/MaterialResource.php

<?php

namespace App\Http\Resources\Material;

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

class MaterialResource extends JsonResource
{
    public function toArray($request)
    {
        return [
            // universal
            'barcode_id'     => $this->barcode_id,
            'material_name'  => $this->material_name,
            'user_id'        => $this->user_id,

            // detect type model
            'type' => $this->detectType(),

            // serialized only
            'serial_number' => $this->when(
                $this->isSerialized(),
                $this->serial_number
            ),

            // consumable only
            'qty' => $this->when(
                $this->isConsumable(),
                [
                    'received'  => $this->qty_received ?? null,
                    'used'      => $this->qty_used ?? null,
                    'remaining' => $this->qty_remaining ?? null,
                    'unit'      => $this->unit ?? null,
                ]
            ),

            // status (beda logic tapi tetap dipakai keduanya)
            'status' => $this->status ?? null,

            // optional tracking info
            'assigned_at' => $this->assigned_at ?? null,
        ];
    }

    private function detectType(): string
    {
        // kalau punya qty field → consumable
        if (isset($this->qty_received) || isset($this->qty_remaining)) {
            return 'consumable';
        }

        return 'serialized';
    }

    private function isSerialized(): bool
    {
        return !isset($this->qty_received);
    }

    private function isConsumable(): bool
    {
        return isset($this->qty_received);
    }
}