Add favoritenote API to toggle favorite/star status (#9)

api/actions/favoritenote.php

@@ -0,0 +1,26 @@
+<?php
+
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+try {
+    $note = Note::loadNote($VARS['id']);
+} catch (NoSuchNoteException $ex) {
+    sendJsonResp($Strings->get("Note does not exist", false), "ERROR");
+}
+
+if (!$note->hasWriteAccess(getRequestUser())) {
+    sendJsonResp($Strings->get("You don't have permission to edit this note.", false), "ERROR");
+}
+if (empty($VARS['favorite'])) {
+    $note->setFavorite(!$note->getFavorite());
+} else {
+    $note->setFavorite($VARS['favorite'] == true);
+}
+
+$note->saveNote();
+
+sendJsonResp($Strings->get("Note saved", false), "OK", ["note" => $note->toArray()]);

api/apisettings.php

@@ -40,4 +40,11 @@ $APIS = [
             "id" => "/^[0-9]+$/"
         ]
     ],
+    "favoritenote" => [
+        "load" => "favoritenote.php",
+        "vars" => [
+            "id" => "/^[0-9]+$/",
+            "favorite (optional)" => "/^[0-1]+$/"
+        ]
+    ]
 ];