PdfFusionLaravel::merge() - Code Metrics - Inspection of "Merge pull request #1 from emersonfidelon/psr-4" - vitormicillo/pdf-fusion-laravel - Measure and Improve Code Quality continuously with Scrutinizer

Completed
Push — master ( 4877b5...2128ed )

by Vitor
created 2020-10-29 07:29 UTC
PdfFusionLaravel::merge() B

↳ Parent: PdfFusionLaravel
Complexity

Conditions	11
Paths	20
Size

Total Lines	30
Code Lines	24
Duplication

Lines	0
Ratio	0 %
Importance

Changes
Metric	Value
cc	11
eloc	24
nc	20
nop	2
dl	0
loc	30
rs	7.3166
c	0
b	0
f	0
How to fix Complexity

<?php
namespace Doode\PdfFusionLaravel;
use setasign\Fpdi\Fpdi;
use Illuminate\Filesystem\Filesystem;
use Illuminate\Support\Collection;
use Illuminate\Support\Str;

class PdfFusionLaravel {
	/**
	 * Access the filesystem on an oop base
	 *
	 * @var Filesystem
	 */
	protected $filesystem = Filesystem::class;
	/**
	 * Hold all the files which will be merged
	 *
	 * @var Collection
	 */
	protected $files = Collection::class;
	/**
	 * Holds every tmp file so they can be removed during the deconstruction
	 *
	 * @var Collection
	 */
	protected $tmpFiles = Collection::class;
	/**
	 * The actual PDF Service
	 *
	 * @var FPDI
	 */
	protected $fpdi = Fpdi::class;
	/**
	 * The final file name
	 *
	 * @var string
	 */
	protected $fileName = 'undefined.pdf';
	/**
	 * Construct and initialize a new instance
	 * @param Filesystem $Filesystem
	 */
	public function __construct(Filesystem $filesystem){
		$this->filesystem = $filesystem;
		$this->createDirectoryForTemporaryFiles();
		$this->fpdi = new Fpdi();
		$this->tmpFiles = collect([]);
		$this->files = collect([]);
	}
	/**
	 * The class deconstructor method
	 */
	public function __destruct() {
		$filesystem = $this->filesystem;
		$this->tmpFiles->each(function($filePath) use($filesystem){
			$filesystem->delete($filePath);
		});
	}
	/**
	 * Initialize a new internal instance of FPDI in order to prevent any problems with shared resources
	 * Please visit https://www.setasign.com/products/fpdi/manual/#p-159 for more information on this issue
	 *
	 * @return self
	 */
	public function init(){
		return $this;
	}
	/**
	 * Stream the merged PDF content
	 *
	 * @return string
	 */
	public function inline(){
		return $this->fpdi->Output($this->fileName, 'I');
	}
	/**
	 * Download the merged PDF content
	 *
	 * @return string
	 */
	public function download(){
		return $this->fpdi->Output($this->fileName, 'D');
	}
	/**
	 * Save the merged PDF content to the filesystem
	 *
	 * @return string
	 */
	public function save($filePath = null){
		return $this->filesystem->put($filePath ? $filePath : $this->fileName, $this->string());
	}
	/**
	 * Get the merged PDF content as binary string
	 *
	 * @return string
	 */
	public function string(){
		return $this->fpdi->Output($this->fileName, 'S');
	}
	/**
	 * Set the generated PDF fileName
	 * @param string $fileName
	 *
	 * @return string
	 */
	public function setFileName($fileName){
		$this->fileName = $fileName;
		return $this;

	}
	/**
	 * Add a PDF for inclusion in the merge with a binary string. Pages should be formatted: 1,3,6, 12-16.
	 * @param string $string
	 * @param mixed $pages
	 * @param mixed $orientation
	 *
	 * @return void
	 */
	public function addPDFString($string, $pages = 'all', $orientation = null){
		$filePath = storage_path('tmp/'.Str::random(16).'.pdf');
		$this->filesystem->put($filePath, $string);
		$this->tmpFiles->push($filePath);
		return $this->addPathToPDF($filePath, $pages, $orientation);

	}
	/**
	 * Add a PDF for inclusion in the merge with a valid file path. Pages should be formatted: 1,3,6, 12-16.
	 * @param string $filePath
	 * @param string $pages
	 * @param string $orientation
	 *
	 * @return self
	 *
	 * @throws \Exception if the given pages aren't correct
	 */
	public function addPathToPDF($filePath, $pages = 'all', $orientation = null) {
		if (file_exists($filePath)) {
		$filePath = $this->convertPDFVersion($filePath);
		if (!is_array($pages) && strtolower($pages) != 'all') {

			throw new \Exception($filePath."'s pages could not be validated");
		}
		$this->files->push([
			'name'  => $filePath,
			'pages' => $pages,
			'orientation' => $orientation
		]);
		} else {
			throw new \Exception("Could not locate PDF on '$filePath'");
		}
		return $this;
	}
	/**
	 * Merges your provided PDFs and outputs to specified location.
	 * @param string $orientation
	 *
	 * @return void
	 *
	 * @throws \Exception if there are now PDFs to merge
	 */
	public function duplexMerge($orientation = 'P'){
		$this->merge($orientation, true);
	}

	public function merge($orientation = 'P', $duplex = false) {
		if ($this->files->count() == 0) {
			throw new \Exception("No PDFs to merge.");
		}
		$fpdi = $this->fpdi;
		$files = $this->files;
		foreach($files as $index => $file){
			$file['orientation'] = is_null($file['orientation']) ? $orientation : $file['orientation'];
			$count = $fpdi->setSourceFile($file['name']);
			if($file['pages'] == 'all') {
				$pages = $count;
				for ($i = 1; $i <= $count; $i++) {
					$template   = $fpdi->importPage($i);
					$size       = $fpdi->getTemplateSize($template);
					$fpdi->AddPage($file['orientation'], [$size['width'], $size['height']]);
					$fpdi->useTemplate($template);
				}
			}else {
				$pages = count($file['pages']);
				foreach ($file['pages'] as $page) {
					if (!$template = $fpdi->importPage($page)) {
					throw new \Exception("Could not load page '$page' in PDF '".$file['name']."'. Check that the page exists.");
					}
					$size = $fpdi->getTemplateSize($template);
					$fpdi->AddPage($file['orientation'], [$size['width'], $size['height']]);
					$fpdi->useTemplate($template);
				}
			}
			if ($duplex && $pages % 2 && $index < (count($files) - 1)) {
				$fpdi->AddPage($file['orientation'], [$size['width'], $size['height']]);

			}
		}
	}

	/**
	 * Converts PDF if version is above 1.4
	 * @param string $filePath
	 *
	 * @return string
	 */
	protected function convertPDFVersion($filePath){
		$pdf = fopen($filePath, "r");
		$first_line = fgets($pdf);
		$first_line = fgets(/** @scrutinizer ignore-type */ $pdf);
		fclose($pdf);
		fclose(/** @scrutinizer ignore-type */ $pdf);
		//extract version number
		preg_match_all('!\d+!', $first_line, $matches);
		$pdfversion = implode('.', $matches[0]);
		if($pdfversion > "1.4"){
			$newFilePath = storage_path('tmp/' . Str::random(16) . '.pdf');
			//execute shell script that converts PDF to correct version and saves it to tmp folder
			shell_exec('gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -sOutputFile="'. $newFilePath . '" "' . $filePath . '"');
			$this->tmpFiles->push($newFilePath);
			$filePath = $newFilePath;
		}
		//return correct file path
		return $filePath;
	}

	/**
	 * Create a the temporary file directory if it doesn't exist.
	 *
	 * @return void
	 */
	protected function createDirectoryForTemporaryFiles(): void
	{
		if (! $this->filesystem->isDirectory(storage_path('tmp'))) {
			$this->filesystem->makeDirectory(storage_path('tmp'));
		}
	}
}

vitormicillo / pdf-fusion-laravel

Push — master ( 4877b5...2128ed )

PdfFusionLaravel::merge() B

Complexity

Size

Duplication

Importance

How to fix Complexity

Long Method

Duplication Side-by-Side

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