From 3f9a53718c2302d99f621cc1850faf6271881a0d Mon Sep 17 00:00:00 2001
From: Benjamin Takats <mail@benjamintakats.de>
Date: Wed, 7 Dec 2022 00:07:01 +0100
Subject: [PATCH] url_to_absolute

---
 app/Http/Livewire/Tables/BookCaseTable.php | 27 +++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/app/Http/Livewire/Tables/BookCaseTable.php b/app/Http/Livewire/Tables/BookCaseTable.php
index de8d8b94..e9aa8534 100644
--- a/app/Http/Livewire/Tables/BookCaseTable.php
+++ b/app/Http/Livewire/Tables/BookCaseTable.php
@@ -45,11 +45,36 @@ class BookCaseTable extends DataTableComponent
                       fn(
                           $row,
                           Column $column
-                      ) => $row->homepage ? '<a target="_blank" class="underline text-amber-500" href="'.$row->homepage.'">Link</a>' : null
+                      ) => $row->homepage ? '<a target="_blank" class="underline text-amber-500" href="'.$this->url_to_absolute($row->homepage).'">Link</a>' : null
                   )
                   ->html(),
             BooleanColumn::make('Oranged-Pilled', 'deactivated')
                          ->sortable(),
         ];
     }
+
+    private function url_to_absolute($url)
+    {
+        // Determine request protocol
+        $request_protocol = $request_protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' ? 'https' : 'http');
+        // If dealing with a Protocol Relative URL
+        if (stripos($url, '//') === 0) {
+            return $url;
+        }
+        // If dealing with a Root-Relative URL
+        if (stripos($url, '/') === 0) {
+            return $request_protocol.'://'.$_SERVER['HTTP_HOST'].$url;
+        }
+        // If dealing with an Absolute URL, just return it as-is
+        if (stripos($url, 'http') === 0) {
+            return $url;
+        }
+        // If dealing with a relative URL,
+        // and attempt to handle double dot notation ".."
+        do {
+            $url = preg_replace('/[^\/]+\/\.\.\//', '', $url, 1, $count);
+        } while ($count);
+        // Return the absolute version of a Relative URL
+        return $request_protocol.'://'.$_SERVER['HTTP_HOST'].'/'.$url;
+    }
 }