<?php
declare(strict_types=1);

namespace Autogedal\Manufacturers\Ui\DataProvider\Page;

use Autogedal\Manufacturers\Api\Data\ManufacturerPageInterface;
use Autogedal\Manufacturers\Model\ResourceModel\ManufacturerPage\CollectionFactory;
use Magento\Framework\App\RequestInterface;
use Magento\Ui\DataProvider\AbstractDataProvider;

class FormDataProvider extends AbstractDataProvider
{
    private const FIELDSET = 'page_details';
    private const DEFAULT_VALUES = [
        ManufacturerPageInterface::OPTION_ID => '',
        ManufacturerPageInterface::CMS_PAGE => '',
    ];

    private ?array $loadedData = null;

    public function __construct(
        $name,
        $primaryFieldName,
        $requestFieldName,
        CollectionFactory $collectionFactory,
        private readonly RequestInterface $request,
        array $meta = [],
        array $data = []
    ) {
        parent::__construct($name, $primaryFieldName, $requestFieldName, $meta, $data);
        $this->collection = $collectionFactory->create();
    }

    public function getData(): array
    {
        if ($this->loadedData !== null) {
            return $this->loadedData;
        }

        $this->loadedData = [];
        foreach ($this->collection->getItems() as $page) {
            $this->loadedData[$page->getId()] = $page->getData();
        }

        $id = $this->request->getParam($this->getRequestFieldName());
        if ($id && !isset($this->loadedData[$id])) {
            $this->loadedData[$id] = $this->collection->getNewEmptyItem()->getData();
        }

        if (empty($this->loadedData)) {
            $this->loadedData[''] = self::DEFAULT_VALUES;
        }

        return $this->loadedData;
    }

    public function getMeta(): array
    {
        $meta = parent::getMeta();
        foreach (self::DEFAULT_VALUES as $field => $default) {
            $meta[self::FIELDSET]['children'][$field]['arguments']['data']['config']['default'] = $default;
        }

        return $meta;
    }
}