BookStack Code Mirror - bookstack/blob - app/Exports/ZipExportBuilder.php

   1 <?php
   2
   3 namespace BookStack\Exports;
   4
   5 use BookStack\Entities\Models\Page;
   6 use BookStack\Exceptions\ZipExportException;
   7 use BookStack\Exports\ZipExportModels\ZipExportPage;
   8 use ZipArchive;
   9
  10 class ZipExportBuilder
  11 {
  12     protected array $data = [];
  13
  14     public function __construct(
  15         protected ZipExportFiles $files,
  16         protected ZipExportReferences $references,
  17     ) {
  18     }
  19
  20     /**
  21      * @throws ZipExportException
  22      */
  23     public function buildForPage(Page $page): string
  24     {
  25         $exportPage = ZipExportPage::fromModel($page, $this->files);
  26         $this->data['page'] = $exportPage;
  27
  28         $this->references->addPage($exportPage);
  29
  30         return $this->build();
  31     }
  32
  33     /**
  34      * @throws ZipExportException
  35      */
  36     protected function build(): string
  37     {
  38         $this->references->buildReferences($this->files);
  39
  40         $this->data['exported_at'] = date(DATE_ATOM);
  41         $this->data['instance'] = [
  42             'version'       => trim(file_get_contents(base_path('version'))),
  43             'id_ciphertext' => encrypt('bookstack'),
  44         ];
  45
  46         $zipFile = tempnam(sys_get_temp_dir(), 'bszip-');
  47         $zip = new ZipArchive();
  48         $opened = $zip->open($zipFile, ZipArchive::CREATE);
  49         if ($opened !== true) {
  50             throw new ZipExportException('Failed to create zip file for export.');
  51         }
  52
  53         $zip->addFromString('data.json', json_encode($this->data));
  54         $zip->addEmptyDir('files');
  55
  56         $toRemove = [];
  57         $this->files->extractEach(function ($filePath, $fileRef) use ($zip, &$toRemove) {
  58             $zip->addFile($filePath, "files/$fileRef");
  59             $toRemove[] = $filePath;
  60         });
  61
  62         $zip->close();
  63
  64         foreach ($toRemove as $file) {
  65             unlink($file);
  66         }
  67
  68         return $zipFile;
  69     }
  70 }