<?php

namespace Stemcell\Customer\Helper\Lynkco;

use Magento\Framework\Exception\LocalizedException;
use Magento\Framework\Module\Dir as ModuleDir;
use Stemcell\Customer\Helper\TransformersInterface;

/**
 *  transform original province and city name to Avatr require id
 */
class Transformers implements TransformersInterface
{
    private ModuleDir $moduleDir;

    protected array $data = [];

    protected array $regions = [];
    public function __construct(
        ModuleDir $moduleDir
    ) {
        $this->moduleDir = $moduleDir;
    }

    /**
     * @param string $path a relative path to $module, must begin with /
     * @param string $module
     * @return array
     * @throws LocalizedException
     */
    protected function loadDataFromFile(string $path, string $module='Stemcell_Customer') : array
    {
        if (isset($this->data[$path]) && !empty($this->data[$path])) {
            return $this->data[$path];
        }
        $file = $this->moduleDir->getDir($module).$path;
        if (!file_exists($file)) {
            throw new LocalizedException(__("$file not exist"));
        }

        $data = json_decode(file_get_contents($file), true);
        if (!$data) {
            throw new LocalizedException(__("$file content is not json"));
        }

        return $this->data[$path] = $data;
    }

    protected function chineseEncoding(string $str)
    {
        // return mb_convert_encoding($str, 'UTF-8', 'gb2312');
        return $str;
    }

    /**
     * @param array $row original row data
     * @return array data order by ['name', 'telephone', 'favorite_vehicle', 'province_id', 'city_id']
     * @throws LocalizedException
     */
    public function transform(array $row): array
    {
        return [$this->chineseEncoding($row[0]), $row[1], $this->getCarModelId($row[2]), null, null];
    }

    /**
     * @throws LocalizedException
     */
    public function getCarModelId(string $carModel)
    {
        $carModel = str_replace(' ', '', $carModel);
        $carModel = $this->chineseEncoding($carModel);
        $carModels = $this->loadDataFromFile('/data/car-models.json');
        return $carModels[$carModel] ?? null;
    }
}