From b432256ccce7b7121685e505b286c43802671a5c Mon Sep 17 00:00:00 2001
From: Jb Lm <lemetayer.jb@gmail.com>
Date: Thu, 31 Mar 2022 14:58:27 +0200
Subject: [PATCH] increase layer on original pdf with pdftk overlay

---
 app.php | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/app.php b/app.php
index deda5f5..925cc03 100644
--- a/app.php
+++ b/app.php
@@ -248,8 +248,13 @@ $f3->route('GET /signature/@hash/pdf',
         if (!$layers||1==1) {
             Web::instance()->send($original, null, 0, TRUE, str_replace('.pdf', '_signe.pdf', $originalFilename));
         }
-        shell_exec(sprintf("pdftk %s multibackground %s output %s", implode(' ', $layers), $original, str_replace('.pdf', '_signe.pdf', $original)));
-        Web::instance()->send(str_replace('.pdf', '_signe.pdf', $original), null, 0, TRUE, str_replace('.pdf', '_signe.pdf', $originalFilename));
+        $newFile =  str_replace('.pdf', '_signe.pdf', $original);
+        $newFilename = str_replace('.pdf', '_signe.pdf', $originalFilename);
+        shell_exec(sprintf("pdftk %s multibackground %s output %s", $layers[0], $original, $newFile));
+        for($i = 1, $max = count($layers); $i < $max; $i++) {
+            shell_exec(sprintf("pdftk %1\$s multibackground %2\$s output %3\$s && mv %3\$s %2\$s", $layers[$i], $newFile, str_replace('_signe.pdf', '_tmp_signe.pdf', $newFile)));
+        }
+        Web::instance()->send($newFile, null, 0, TRUE, $newFilename);
     }
 );