97 lines
2.2 KiB
PHP
97 lines
2.2 KiB
PHP
<?php
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declare(strict_types=1);
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namespace Gregwar\CaptchaBundle\Generator;
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use Symfony\Component\Finder\Finder;
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/**
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* Handles actions related to captcha image files including saving and garbage collection.
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*
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* @author Gregwar <g.passault@gmail.com>
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* @author Jeremy Livingston <jeremy@quizzle.com>
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*/
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class ImageFileHandler
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{
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/**
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* Name of folder for captcha images.
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*
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* @var string
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*/
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protected $imageFolder;
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/**
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* Absolute path to public web folder.
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*
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* @var string
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*/
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protected $webPath;
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/**
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* Frequency of garbage collection in fractions of 1.
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*
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* @var int
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*/
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protected $gcFreq;
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/**
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* Maximum age of images in minutes.
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*
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* @var int
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*/
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protected $expiration;
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/**
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* @param string $imageFolder
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* @param string $webPath
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* @param string $gcFreq
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* @param string $expiration
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*/
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public function __construct(string $imageFolder, string $webPath, string $gcFreq, string $expiration)
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{
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$this->imageFolder = $imageFolder;
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$this->webPath = $webPath;
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$this->gcFreq = $gcFreq;
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$this->expiration = $expiration;
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}
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public function saveAsFile($contents): string
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{
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$this->createFolderIfMissing();
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$filename = md5(uniqid()).'.jpg';
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$filePath = $this->webPath.'/'.$this->imageFolder.'/'.$filename;
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imagejpeg($contents, $filePath, 15);
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return '/'.$this->imageFolder.'/'.$filename;
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}
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public function collectGarbage(): bool
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{
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if (1 == !mt_rand(1, $this->gcFreq)) {
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return false;
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}
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$this->createFolderIfMissing();
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$finder = new Finder();
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$criteria = sprintf('<= now - %s minutes', $this->expiration);
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$finder->in($this->webPath.'/'.$this->imageFolder)
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->date($criteria);
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foreach ($finder->files() as $file) {
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unlink($file->getPathname());
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}
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return true;
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}
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protected function createFolderIfMissing(): void
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{
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if (!file_exists($this->webPath.'/'.$this->imageFolder)) {
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mkdir($this->webPath.'/'.$this->imageFolder, 0755);
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}
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}
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}
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