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<?php |
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/** |
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* Created by PhpStorm. |
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* User: famoser |
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* Date: 04/09/2017 |
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* Time: 13:29 |
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*/ |
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namespace Famoser\XKCDCache\Services; |
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use Exception; |
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use Famoser\XKCDCache\Entities\Comic; |
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use Famoser\XKCDCache\Exceptions\ServerException; |
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use Famoser\XKCDCache\Models\XKCD\XKCDJson; |
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use Famoser\XKCDCache\Services\Base\BaseService; |
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use Famoser\XKCDCache\Services\Interfaces\CacheServiceInterface; |
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use Famoser\XKCDCache\Types\Downloader; |
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use Famoser\XKCDCache\Types\DownloadStatus; |
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use Famoser\XKCDCache\Types\ServerError; |
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use ZipArchive; |
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class CacheService extends BaseService implements CacheServiceInterface |
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{ |
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/** |
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* creates a zip file of all the images contained in the image folder with the target number as filename |
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* |
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* @param $number |
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* @return bool |
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* @throws ServerException |
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*/ |
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public function createImageZip($number) |
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{ |
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try { |
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$zip = new ZipArchive(); |
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$filename = $this->getSettingService()->getZipCachePath() . DIRECTORY_SEPARATOR . $number . ".zip"; |
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if ($zip->open($filename, ZipArchive::CREATE) !== true) { |
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$this->getLoggingService()->log("could not create zip file at " . $filename); |
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} |
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$zip->addGlob($this->getSettingService()->getImageCachePath() . DIRECTORY_SEPARATOR . "*"); |
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$this->getLoggingService()->log("created zip file with " . $zip->numFiles . " files. status: " . $zip->status); |
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$zip->close(); |
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return true; |
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} catch (Exception $ex) { |
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$this->getLoggingService()->log("failed to create zip: " . $ex); |
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throw new ServerException(ServerError::ZIP_FAILED); |
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} |
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} |
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/** |
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* returns the newest XKCD comic |
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* |
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* @return Comic|null |
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*/ |
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public function getNewestComic() |
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{ |
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return $this->getDatabaseService()->getSingleFromDatabase(new Comic(), null, null, "num DESC"); |
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} |
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/** |
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* persists the passed XKCD comic |
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* |
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* @param XKCDJson $XKCDComic |
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* @return bool |
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*/ |
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public function persistComic($XKCDComic) |
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{ |
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$dbService = $this->getDatabaseService(); |
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//construct comic |
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$comic = new Comic(); |
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$comic->num = $XKCDComic->num; |
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$comic->status = DownloadStatus::SUCCESSFUL; |
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$comic->link = $XKCDComic->link; |
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$comic->news = $XKCDComic->news; |
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$comic->transcript = $XKCDComic->transcript; |
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$comic->safe_title = $XKCDComic->safe_title; |
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$comic->alt = $XKCDComic->alt; |
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$comic->img = $XKCDComic->img; |
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$comic->title = $XKCDComic->title; |
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$comic->publish_date = strtotime($XKCDComic->day . "." . $XKCDComic->month . "." . $XKCDComic->year); |
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$comic->download_date_time = time(); |
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$comic->downloaded_by = Downloader::VERSION_1; |
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$comic->json = json_encode($XKCDComic); |
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$comic->filename = substr($comic->img, strrpos($comic->img, "/") + 1); |
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try { |
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//download image |
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$contents = file_get_contents($comic->img); |
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file_put_contents($this->getSettingService()->getImageCachePath() . DIRECTORY_SEPARATOR . $comic->filename, $contents); |
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} catch (Exception $ex) { |
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$comic->status = DownloadStatus::IMAGE_DOWNLOAD_FAILED; |
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$this->getLoggingService()->log("could not download comic " . $XKCDComic->num . ": " . $ex); |
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} |
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return $dbService->saveToDatabase($comic); |
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} |
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/** |
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* returns the path of the zip for this number |
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* |
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* @param $number |
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* @return string |
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*/ |
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private function constructZipPath($number) |
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{ |
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return $this->getSettingService()->getZipCachePath() . DIRECTORY_SEPARATOR . $number . ".zip"; |
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} |
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/** |
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* returns the file size of the zip with the specified number |
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* |
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* @param $number |
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* @return int |
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*/ |
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public function getFileSizeOfZip($number) |
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{ |
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$zipPath = $this->constructZipPath($number); |
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return filesize($zipPath); |
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} |
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/** |
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* returns the content of the zip with the specified number |
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* |
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* @param $number |
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* @return mixed |
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*/ |
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public function getContentOfZip($number) |
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{ |
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$zipPath = $this->constructZipPath($number); |
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return file_get_contents($zipPath); |
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} |
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/** |
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* returns the number of the newest zip |
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* returns false if none found |
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* |
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* @return int|false |
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* @throws ServerException |
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* @throws ServerException |
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*/ |
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public function getNewestZip() |
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{ |
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$newestComic = $this->getNewestComic(); |
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$currentNum = $newestComic->num; |
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do { |
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$zipPath = $this->constructZipPath($currentNum); |
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$zipExists = file_exists($zipPath); |
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} while (!$zipExists && $currentNum-- > 0); |
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if ($zipExists) { |
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return $currentNum; |
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} |
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return false; |
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} |
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} |
famoser /
xkcd-cache
