From abbfd70319043b59419cd34d00182f4b0e45c155 Mon Sep 17 00:00:00 2001
From: Benjamin Renard <brenard@easter-eggs.com>
Date: Mon, 20 Nov 2023 18:45:50 +0100
Subject: [PATCH] Tpl: add display_ajax_error() helper method

---
 src/Tpl.php | 38 +++++++++++++++++++++++++++++++++-----
 1 file changed, 33 insertions(+), 5 deletions(-)

diff --git a/src/Tpl.php b/src/Tpl.php
index c8bd4bb..89aede5 100644
--- a/src/Tpl.php
+++ b/src/Tpl.php
@@ -524,16 +524,21 @@ class Tpl {
   /**
    * Display AJAX return
    * @param array|null $data AJAX returned data (optional)
+   * @param int|null $error_code HTTP error code (optional, default: 400 if not $data['success'])
    * @param bool $pretty AJAX returned data
    *             (optional, default: true if $_REQUEST['pretty'] is set, False otherwise)
    * @return never
    */
-  public static function display_ajax_return($data=null, $pretty=false) {
+  public static function display_ajax_return($data=null, $error_code=null, $pretty=false) {
     if (!is_array($data))
       $data = array();
-    // Adjust HTTP error code on unsuccessfull request
-    elseif (isset($data['success']) && !$data['success'] && http_response_code() == 200)
-      http_response_code(400);
+
+    // Adjust HTTP error code on unsuccessfull request (or if custom error code is provided)
+    if (
+      $error_code
+      || (isset($data['success']) && !$data['success'] && http_response_code() == 200)
+    )
+      http_response_code($error_code ? $error_code : 400);
 
     $data['messages'] = self :: get_messages();
     if (!$data['messages']) unset($data['messages']);
@@ -550,6 +555,29 @@ class Tpl {
     exit();
   }
 
+  /**
+   * Display AJAX error
+   * @param string|null $error Error message (optional)
+   * @param int|null $error_code HTTP error code (optional, default: 400)
+   * @param bool $pretty AJAX returned data
+   *             (optional, default: true if $_REQUEST['pretty'] is set, False otherwise)
+   * @return never
+   */
+  public static function display_ajax_error($error=null, $error_code=null, $pretty=false) {
+    self :: display_ajax_return(
+      array(
+        'success' => false,
+        'error' => (
+          $error?
+          $error:
+          I18n::_("Unexpected error occured. If problem persist, please contact support.")
+        ),
+      ),
+      $error_code,
+      $pretty
+    );
+  }
+
   /**
    * Handle a fatal error
    * @param string $error The error message
@@ -576,7 +604,7 @@ class Tpl {
 
     // Handle API mode
     if (Url :: api_mode())
-      self :: display_ajax_return(array('success' => false, 'error' => $error));
+      self :: display_ajax_error($error);
 
     self :: assign('fatal_error', $error);
     self :: display('fatal_error.tpl');