custom html added

Author: Ratheep

config/mail-tracker.php

@@ -1,12 +1,14 @@
 <?php
 return [
-    'track-open'=>true,
-    'track-click'=> true,
-    'expire-days'=>60,
-    'emails-per-page'=>30,
+    'track-open' => true,
+    'track-click' => true,
+    'expire-days' => 60,
+    'emails-per-page' => 30,
     'date-format' => 'm/d/Y g:i a',
     'route' => [
         'prefix' => 'mail-track',
         'middleware' => ['web'],
     ],
+    'custom-inject' => false,
+    'custom-inject-html' => ''
 ];

src/MailTracker.php

@@ -54,14 +54,17 @@ protected function addTrackers($html, $hash)
         if(config('mail-tracker.track-click')) {
             $html = $this->injectLinkTracker($html, $hash);
         }
-
+        if (config('mail-tracker.custom-inject')){
+            $customInject = config('mail-tracker.custom-inject-html');
+            $html = $this->customInject($html, $customInject);
+        }
         return $html;
     }
 
     protected function injectTrackingPixel($html, $hash)
     {
         // Append the tracking url
-        $tracking_pixel = '<img src="'.route('mailTracker_t',[$hash]).'" />';
+        $tracking_pixel = '<img src="'.route('mailTracker_t',[$hash]).'"  style="height: 0px; display: inherit;"/>';
 
         $linebreak = str_random(32);
         $html = str_replace("\n",$linebreak,$html);
@@ -76,6 +79,20 @@ protected function injectTrackingPixel($html, $hash)
         return $html;
     }
 
+    protected function customInject($html, $injectHtml){
+        // Append the custom html
+        $linebreak = str_random(32);
+        $html = str_replace("\n",$linebreak,$html);
+
+        if(preg_match("/^(.*<body[^>]*>)(.*)$/", $html, $matches)) {
+            $html = $matches[1].$injectHtml.$matches[2];
+        } else {
+            $html = $html . $injectHtml;
+        }
+        $html = str_replace($linebreak,"\n",$html);
+        return $html;
+    }
+
     protected function injectLinkTracker($html, $hash)
     {
         $this->hash = $hash;