Upgrade LBCAlerte to version 3.3

Add upgrade script

sources/app/models/Storage/AdPhoto.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace App\Storage;
+
+use App\Ad\Ad as AdItem;
+
+class AdPhoto
+{
+    protected $_user;
+
+    public function __construct(\App\User\User $user)
+    {
+        $this->_user = $user;
+    }
+
+    public function getPublicDestination($filename = null)
+    {
+        $destination = "static/media/annonce/".$this->_user->getUsername();
+        if ($filename) {
+            $destination .= "/".$filename;
+        }
+        return $destination;
+    }
+
+    public function getDestination()
+    {
+        return DOCUMENT_ROOT."/static/media/annonce/".$this->_user->getUsername();
+    }
+
+    public function import(AdItem $ad, $override = false)
+    {
+        $destination = $this->getDestination();
+        if (!is_dir($destination) && !mkdir($destination)) {
+            return false;
+        }
+
+        foreach ($ad->getPhotos() AS $photo) {
+            $filename = $destination."/".$photo["local"];
+            if (!is_file($filename) || $override) {
+                copy($photo["remote"], $filename);
+            }
+        }
+
+        return true;
+    }
+
+    public function delete(AdItem $ad)
+    {
+        $destination = $this->getDestination();
+        foreach ($ad->getPhotos() AS $photo) {
+            $filename = $destination."/".$photo["local"];
+            if (is_file($filename)) {
+                unlink($filename);
+            }
+        }
+    }
+}