<?php

namespace App\Komma\Kms\JsonApi;

use App\Helpers\KommaHelpers;
use App\Komma\Kms\Core\AbstractTranslatableModel;
use Illuminate\Http\Resources\Json\Resource;

class TranslatableResource extends Resource
{
    public function __construct($resource)
    {
        if(!is_a($resource,AbstractTranslatableModel::class)) throw new \InvalidArgumentException('The resource must be an instance of '.AbstractTranslatableModel::class);

        parent::__construct($resource);
    }

    /**
     * Transform the resource into an array.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return array
     */
    public function toArray($request)
    {
        $attributes = $this->resource->toArray();
        $attributes['translations'] = [];

        $index = 0;
        foreach ($attributes as $key => $attribute) {
            if(is_array($attribute)) array_splice($attributes, $index, 1);
            $index++;
        }

        $data = [
            'id' => (string) $this->id,
            'type' => KommaHelpers::getShortNameFromClass($this->resource, true),
            'attributes' => $attributes,
        ];

        $this->resource->translation()->get()->each(function($translation) use(&$data) {
            $data['attributes']['translation'][] = new TranslationResource($translation);
        });

        return $data;
    }
}