<?php
/**
 * Magento Chatbot Integration
 * Copyright (C) 2018
 * 
 * This file is part of Werules/Chatbot.
 * 
 * Werules/Chatbot is free software: you can redistribute it and/or modify
 * it under the terms of the MIT License.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * MIT License for more details.
 * 
 * You should have received a copy of the MIT License
 * along with this program. If not, see <https://opensource.org/licenses/MIT>.
 */

namespace Werules\Chatbot\Model\PromotionalMessages;

use Werules\Chatbot\Model\ResourceModel\PromotionalMessages\CollectionFactory;
use Magento\Framework\App\Request\DataPersistorInterface;

class DataProvider extends \Magento\Ui\DataProvider\AbstractDataProvider
{

    protected $collection;

    protected $dataPersistor;

    protected $loadedData;

    /**
     * Constructor
     *
     * @param string $name
     * @param string $primaryFieldName
     * @param string $requestFieldName
     * @param CollectionFactory $collectionFactory
     * @param DataPersistorInterface $dataPersistor
     * @param array $meta
     * @param array $data
     */
    public function __construct(
        $name,
        $primaryFieldName,
        $requestFieldName,
        CollectionFactory $collectionFactory,
        DataPersistorInterface $dataPersistor,
        array $meta = [],
        array $data = []
    ) {
        $this->collection = $collectionFactory->create();
        $this->dataPersistor = $dataPersistor;
        parent::__construct($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();
        }
        $data = $this->dataPersistor->get('werules_chatbot_promotionalmessages');
        
        if (!empty($data)) {
            $model = $this->collection->getNewEmptyItem();
            $model->setData($data);
            $this->loadedData[$model->getId()] = $model->getData();
            $this->dataPersistor->clear('werules_chatbot_promotionalmessages');
        }
        
        return $this->loadedData;
    }
}
