move zip export into exportservice

[bookstack] / app / Entities / ExportService.php

diff --git a/app/Entities/ExportService.php b/app/Entities/ExportService.php
index 1b294d8b17f0b78317375a35e5f9010770f02b5a..b0e88b18bb7db42b9cfbd05242230740c15f48a9 100644 (file)
--- a/app/Entities/ExportService.php
+++ b/app/Entities/ExportService.php
@@ -8,6 +8,7 @@ use Exception;
 use SnappyPDF;
 use League\HTMLToMarkdown\HtmlConverter;
 use Throwable;
+use ZipArchive;
 
 class ExportService
 {
@@ -271,4 +272,27 @@ class ExportService
         }
         return $text;
     }
+
+    /**
+     * Convert a book into a zip file.
+     */
+    public function bookToZip(Book $book): string
+    {
+        // TODO: Is not unlinking the file a security risk?
+        $z = new ZipArchive();
+        $z->open("book.zip", \ZipArchive::CREATE | \ZipArchive::OVERWRITE);
+        $bookTree = (new BookContents($book))->getTree(false, true);
+        foreach ($bookTree as $bookChild) {
+            if ($bookChild->isA('chapter')) {
+                $z->addEmptyDir($bookChild->name);
+                foreach ($bookChild->pages as $page) {
+                    $filename = $bookChild->name . "/" . $page->name . ".md";
+                    $z->addFromString($filename, $this->pageToMarkdown($page));
+                }
+            } else {
+                $z->addFromString($bookChild->name . ".md", $this->pageToMarkdown($bookChild));
+            }
+        }
+        return "book.zip";
+    }
 }