<?php
/**
 * @author  Magediary
 * @package Magediary_ProductQuestion
 */

namespace Magediary\ProductQuestion\Ui\DataProvider\Question;

use Magediary\ProductQuestion\Model\ResourceModel\Question\Collection;
use Magediary\ProductQuestion\Model\ResourceModel\Question\CollectionFactory;
use Magento\Framework\App\Request\DataPersistorInterface;
use Magento\Catalog\Helper\Image as ImageHelper;
use Magento\Catalog\Model\Product\Attribute\Source\Status;
use Magento\Ui\DataProvider\AbstractDataProvider;

class DataProvider extends AbstractDataProvider
{
    /**
     * @var Collection
     */
    protected $collection;

    /**
     * @var DataPersistorInterface
     */
    protected $dataPersistor;

    /**
     * @var array
     */
    protected $loadedData;

    /**
     * @var ImageHelper
     */
    protected $imageHelper;

    /**
     * @var Status
     */
    protected $status;

    /**
     * @param string $name
     * @param string $primaryFieldName
     * @param string $requestFieldName
     * @param CollectionFactory $collectionFactory
     * @param DataPersistorInterface $dataPersistor
     * @param ImageHelper $imageHelper
     * @param Status $status
     * @param array $meta
     * @param array $data
     */
    public function __construct(
        $name,
        $primaryFieldName,
        $requestFieldName,
        CollectionFactory $collectionFactory,
        DataPersistorInterface $dataPersistor,
        ImageHelper $imageHelper,
        Status $status,
        array $meta = [],
        array $data = []
    ) {
        $this->collection = $collectionFactory->create();
        $this->dataPersistor = $dataPersistor;
        $this->imageHelper = $imageHelper;
        $this->status = $status;
        parent::__construct($name, $primaryFieldName, $requestFieldName, $meta, $data);
    }

    /**
     * Get data
     *
     * @return array
     */
    public function getData()
    {
        if (isset($this->loadedData)) {
            return $this->loadedData;
        }
        $items = $this->collection->getItems();
        foreach ($items as $model) {
            $this->loadedData[$model->getId()] = $model->getData();

            /* Prepare products */
            $collection = $model->getRelatedProducts()->addAttributeToSelect('name')->addAttributeToSelect('thumbnail');

            $items = [];
            foreach ($collection as $item) {
                $items[] = [
                    'id' => $item->getId(),
                    'name' => $item->getName(),
                    'thumbnail' => $this->imageHelper->init($item, 'product_listing_thumbnail')->getUrl(),
                    'status' => $this->status->getOptionText($item->getStatus()),
                ];
            }
            $data['links']['product'] = $items;

            /* Set data */
            $this->loadedData[$model->getId()]['data'] = $data;
        }
        $data = $this->dataPersistor->get('magediary_question');

        if (!empty($data)) {
            $model = $this->collection->getNewEmptyItem();
            $model->setData($data);
            $this->loadedData[$model->getId()] = $model->getData();
            $this->dataPersistor->clear('magediary_question');
        }

        return $this->loadedData;
    }
}