<?php

namespace UkrSolution\WpBarcodesGenerator\Generators;

use Com\Tecnick\Barcode\Barcode;

class Generator
{
    protected $storePath;
    protected $barcodeFactory;

    /**
     * Generator constructor.
     */
    public function __construct()
    {
        $this->barcodeFactory = new Barcode();
    }

    /**
     * Generate barcode as SVG, save and get saved file name.
     *
     * @param        $code
     * @param        $type
     * @param int    $w
     * @param int    $h
     * @param string $color
     *
     * @return string
     *
     * @throws \Com\Tecnick\Barcode\Exception
     * @throws \Com\Tecnick\Color\Exception
     */
    public function getGeneratedBarcodeSVGFileName($code, $type, $w = 2, $h = 30, $color = 'black')
    {
        // If UPCE use old library https://github.com/tecnickcom/TCPDF with fix from https://github.com/milon/barcode/issues/27
        if ('UPCE' === $type) {
            $tcpdfBarcode = new \TCPDFBarcode($code, 'UPCE');
            $svgContent = $tcpdfBarcode->getBarcodeSVGcode(8, 480, 'black');
        } else {
            // Get SVG code for generated barcode.
            $svgContent = $this->barcodeFactory
                ->getBarcodeObj($type, $code, $w, $h, $color)
                ->setBackgroundColor('white')
                ->getSvgCode();
        }

        // Save content to file.
        $fileName = sha1(md5(uniqid(rand(), 1))).'.svg';
        $saveFile = $this->checkfile($this->storePath.$fileName);
        $result = file_put_contents($saveFile, $svgContent);

        // Return path to file or empty string
        return false !== $result ? $fileName : '';
    }

    /**
     * Set store path for generated files.
     *
     * @param $path
     *
     * @return $this
     */
    public function setStorPath($path)
    {
        $this->storePath = $path;

        return $this;
    }

    /**
     * Check if file exists, remove it.
     *
     * @param $path
     *
     * @return mixed
     */
    protected function checkfile($path)
    {
        // Check if file exists.
        if (file_exists($path)) {
            unlink($path);
        }

        return $path;
    }
}