AJAX: Add some code that can be reused to display AJAX request errors

Also use this to add groups to the left menu

Web/Presenters/OpenVKPresenter.php

@@ -39,8 +39,19 @@ abstract class OpenVKPresenter extends SimplePresenter
         Session::i()->set("_tempTheme", $theme);
     }
     
-    protected function flashFail(string $type, string $title, ?string $message = NULL, ?int $code = NULL): void
+    protected function flashFail(string $type, string $title, ?string $message = NULL, ?int $code = NULL, bool $json = false): void
     {
+        if($json) {
+            $this->returnJson([
+                "success" => $type !== "err",
+                "flash" => [
+                    "type"    => $type,
+                    "title"   => $title,
+                    "message" => $message,
+                    "code"    => $code,
+                ],
+            ]);
+        } else {
             $this->flash($type, $title, $message, $code);
             $referer = $_SERVER["HTTP_REFERER"] ?? "/";
             
@@ -48,6 +59,7 @@ abstract class OpenVKPresenter extends SimplePresenter
             header("Location: $referer");
             exit;
         }
+    }
     
     protected function logInUserWithToken(): void
     {
@@ -120,7 +132,7 @@ abstract class OpenVKPresenter extends SimplePresenter
             $this->flashFail("err", tr("captcha_error"), tr("captcha_error_comment"));
     }
     
-    protected function willExecuteWriteAction(): void
+    protected function willExecuteWriteAction(bool $json = false): void
     {
         $ip  = (new IPs)->get(CONNECTING_IP);
         $res = $ip->rateLimit();
@@ -131,7 +143,7 @@ abstract class OpenVKPresenter extends SimplePresenter
                 exit("Хакеры? Интересно...");
             }
             
-            $this->flashFail("err", tr("rate_limit_error"), tr("rate_limit_error_comment", OPENVK_ROOT_CONF["openvk"]["appearance"]["name"], $res));
+            $this->flashFail("err", tr("rate_limit_error"), tr("rate_limit_error_comment", OPENVK_ROOT_CONF["openvk"]["appearance"]["name"], $res), NULL, $json);
         }
     }
     
@@ -241,4 +253,13 @@ abstract class OpenVKPresenter extends SimplePresenter
             Session::i()->set("_error", NULL);
         }
     }
+
+    protected function returnJson(array $json): void
+    {
+        $payload = json_encode($json);
+        $size = strlen($payload);
+        header("Content-Type: application/json");
+        header("Content-Length: $size");
+        exit($payload);
+    }
 } 

Web/Presenters/UserPresenter.php

@@ -101,11 +101,11 @@ final class UserPresenter extends OpenVKPresenter
             $this->notFound();
 
         if(!$club->canBeModifiedBy($this->user->identity ?? NULL))
-            $this->flashFail("err", "Ошибка доступа", "У вас недостаточно прав, чтобы изменять этот ресурс.");
+            $this->flashFail("err", "Ошибка доступа", "У вас недостаточно прав, чтобы изменять этот ресурс.", NULL, true);
 
         $isClubPinned = $this->user->identity->isClubPinned($club);
         if(!$isClubPinned && $this->user->identity->getPinnedClubCount() > 10)
-            $this->flashFail("err", "Ошибка", "Находится в левом меню могут максимум 10 групп");
+            $this->flashFail("err", "Ошибка", "Находится в левом меню могут максимум 10 групп", NULL, true);
 
         if($club->getOwner()->getId() === $this->user->identity->getId()) {
             $club->setOwner_Club_Pinned(!$isClubPinned);
@@ -118,10 +118,9 @@ final class UserPresenter extends OpenVKPresenter
             }
         }
 
-        if($isClubPinned)
+        $this->returnJson([
-            $this->flashFail("succ", "Операция успешна", "Группа " . $club->getName() . " была успешно удалена из левого меню");
+            "success" => true
-        else
+        ]);
-            $this->flashFail("succ", "Операция успешна", "Группа " . $club->getName() . " была успешно добавлена в левое меню");
     }
     
     function renderEdit(): void

Web/Presenters/WallPresenter.php

@@ -320,7 +320,7 @@ final class WallPresenter extends OpenVKPresenter
                 (new RepostNotification($post->getOwner(false), $post, $this->user->identity))->emit();
         };
         
-        exit(json_encode(["wall_owner" => $this->user->identity->getId()]));
+        $this->returnJson(["wall_owner" => $this->user->identity->getId()]);
     }
     
     function renderDelete(int $wall, int $post_id): void

Web/static/js/openvk.cls.js

@@ -38,6 +38,22 @@ function hidePanel(panel, count = 0)
 
 }
 
+function parseAjaxResponse(responseString) {
+    try {
+        const response = JSON.parse(responseString);
+        if(response.flash)
+            NewNotification(response.flash.title, response.flash.message || "", null);
+
+        return response.success || false;
+    } catch(error) {
+        if(responseString === "Хакеры? Интересно...") {
+            location.reload();
+            return false;
+        } else {
+            throw error;
+        }
+    }
+}
 
 document.addEventListener("DOMContentLoaded", function() { //BEGIN
 
@@ -100,6 +116,15 @@ document.addEventListener("DOMContentLoaded", function() { //BEGIN
         let req = await ky(link);
         if(req.ok == false) {
             NewNotification(tr('error'), tr('error_1'), null);
+            thisButton.nodes[0].classList.remove('loading');
+            thisButton.nodes[0].classList.remove('disable');
+            return;
+        }
+
+        if(!parseAjaxResponse(await req.text())) {
+            thisButton.nodes[0].classList.remove('loading');
+            thisButton.nodes[0].classList.remove('disable');
+            return;
         }
 
         // Adding a divider if not already there
@@ -222,4 +247,3 @@ function showCoinsTransferDialog(coinsCount, hash) {
         Function.noop
     ]);
 }
-