(feat): blogs now use common storage engine

plugins/blog/api/v1/blog.php

@@ -132,18 +132,20 @@ class blog implements Interfaces\Api
           case "header":
             $blog = new entities\Blog($pages[1]);
             $header = new \ElggFile();
-                  $header->owner_guid = $blog->owner_guid;
-                  $header->setFilename("blog/{$blog->guid}.jpg");
-                  header('Content-Type: image/jpeg');
-                  header('Expires: ' . date('r', time() + 864000));
-                  header("Pragma: public");
-                   header("Cache-Control: public");
-
-                  try {
-                      echo file_get_contents($header->getFilenameOnFilestore());
-                  } catch (\Exception $e) {
-                  }
-                  exit;
+            $header->owner_guid = $blog->owner_guid;
+            $header->setFilename("blog/{$blog->guid}.jpg");
+            $header->open('read');
+
+            header('Content-Type: image/jpeg');
+            header('Expires: ' . date('r', time() + 864000));
+            header("Pragma: public");
+            header("Cache-Control: public");
+
+            try {
+              echo $header->read();
+            } catch (\Exception $e) {
+            }
+            exit;
             break;
         }
 

plugins/blog/api/v1/header.php

@@ -26,13 +26,14 @@ class header implements Interfaces\Api, Interfaces\ApiIgnorePam
         $header = new \ElggFile();
         $header->owner_guid = $blog->owner_guid;
         $header->setFilename("blog/{$blog->guid}.jpg");
+        $header->open('read');
         header('Content-Type: image/jpeg');
         header('Expires: ' . date('r', time() + 864000));
         header("Pragma: public");
         header("Cache-Control: public");
 
         try {
-            echo file_get_contents($header->getFilenameOnFilestore());
+            echo $header->read();
         } catch (\Exception $e) {
         }
         exit;