From f53e9887e2f46bcefb2d61c65c5171cd16d67306 Mon Sep 17 00:00:00 2001
From: Sergio Mendolia <sergio@mendolia.dev>
Date: Fri, 1 Sep 2023 14:38:54 +0200
Subject: [PATCH] Faster checksum calculation

---
 src/Service/BookFileSystemManager.php | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/Service/BookFileSystemManager.php b/src/Service/BookFileSystemManager.php
index a5e5bec0..acaf2464 100644
--- a/src/Service/BookFileSystemManager.php
+++ b/src/Service/BookFileSystemManager.php
@@ -18,6 +18,8 @@ class BookFileSystemManager
         '*.epub','*.cbr','*.cbz','*.pdf','*.mobi'
     ];
 
+    public const CHUNK = 65536;
+
     public KernelInterface $appKernel;
     private SluggerInterface $slugger;
 
@@ -100,10 +102,14 @@ public function getCoverFile(Book $book): ?SplFileInfo
      */
     public function getFileChecksum(SplFileInfo $file): string
     {
-        $checkSum = sha1_file($file->getRealPath());
-        if($checkSum===false){
-            throw new \RuntimeException('Could not calculate file Checksum');
+        $checkSum = shell_exec('sha1sum -b ' . escapeshellarg($file->getRealPath()));
+
+        if ($checkSum === null || $checkSum === false) {
+            throw new RuntimeException('Could not calculate file Checksum');
         }
+
+        [$checkSum,] = explode(' ', $checkSum);
+
         return $checkSum;
     }