Translatepress support for Loyalty Widget

functions.php

<?php

/**
   * WPGens Loyalty: hardcoded TranslatePress fallback (ID-based).                                                      
   */                                                                                                                   
                                                                                                                        
  // ID-based action translations — id matches the row in the loyalty admin                                             
  // (Earning Actions list). Update as needed.                                                                        
  function wpgl_tp_id_map() {                                                                                           
        return [
                'earning' => [                                                                                          
                        1 => 'Registration',                      
                        2 => 'Place an order',                                                                          
                        3 => 'Product review',                    
                        4 => 'Add birthday',                                                                          
                ],
                'redeem' => [                                                                                           
                        // '1' => 'Whatever',
                ],                                                                                                      
        ];                                                        
  }                                                                                                                   

  // Title-based map for points label (still title-keyed; these are short).                                             
  function wpgl_tp_title_map() {
        return [                                                                                                        
                'точка' => 'point',                               
                'точки' => 'points',                                                                                  
        ];                                                                                                              
  }
                                                                                                                        
  function wpgl_tp_should_translate() {                           
        if (!empty($GLOBALS['TRP_LANGUAGE']) && $GLOBALS['TRP_LANGUAGE'] === 'en_GB') return true;                    
        if (defined('REST_REQUEST') && REST_REQUEST) return true; // assume single non-default language                 
        return false;                                                                                                   
  }                                                                                                                     
                                                                                                                        
  add_filter('wpgens_loyalty_widget_config', function ($config) {                                                       
        if (!wpgl_tp_should_translate()) return $config;                                                              
                                                                                                                      
        $id_map = wpgl_tp_id_map();                                                                                     
        $title_map = wpgl_tp_title_map();
        $translated = [];                                                                                               
                                                                  
        foreach (['pointsName', 'pointsNameSingular'] as $k) {                                                          
                if (!empty($config[$k]) && isset($title_map[$config[$k]])) {
                        $config[$k] = $title_map[$config[$k]];                                                          
                        $translated[] = $k;                       
                }                                                                                                       
        }
                                                                                                                        
        foreach (['earningActions' => 'earning', 'redeemActions' => 'redeem'] as $listKey => $mapKey) {                 
                if (!empty($config[$listKey]) && is_array($config[$listKey])) {                                       
                        foreach ($config[$listKey] as $i => $a) {                                                       
                                $id = isset($a['id']) ? (int) $a['id'] : 0;                                             
                                if ($id && isset($id_map[$mapKey][$id])) {                                            
                                        $config[$listKey][$i]['title'] = $id_map[$mapKey][$id];                         
                                        $translated[] = $listKey . '[' . $i . '] id=' . $id;                            
                                }                                                                                       
                        }                                                                                               
                }                                                                                                       
        }                                                                                                             
                                                                                                                      
        $config['_debug'] = [
                'filter'        => 'wpgens_loyalty_widget_config',
                'TRP_LANGUAGE'  => $GLOBALS['TRP_LANGUAGE'] ?? null,
                'is_rest'       => defined('REST_REQUEST') && REST_REQUEST,                                             
                'translated'    => $translated,                                                                         
        ];                                                                                                              
                                                                                                                        
        return $config;                                                                                               
  }, 20);                                                                                                             

  add_filter('rest_post_dispatch', function ($response, $server, $request) {                                            
        if (strpos($request->get_route(), '/wpgens-loyalty/') === false) return $response;
        if (!wpgl_tp_should_translate()) return $response;                                                              
                                                                  
        $data = $response->get_data();                                                                                  
        if (!is_array($data)) return $response;                   
                                                                                                                        
        $id_map = wpgl_tp_id_map();
        $translated = [];                                                                                               
                                                                  
        // Translate pointsProgram.earningActions[*].title and redeemActions[*].title                                   
        if (!empty($data['pointsProgram']) && is_array($data['pointsProgram'])) {
                foreach (['earningActions' => 'earning', 'redeemActions' => 'redeem'] as $listKey => $mapKey) {         
                        if (!empty($data['pointsProgram'][$listKey]) && is_array($data['pointsProgram'][$listKey])) {   
                                foreach ($data['pointsProgram'][$listKey] as $i => $a) {                                
                                        $id = isset($a['id']) ? (int) $a['id'] : 0;                                     
                                        if ($id && isset($id_map[$mapKey][$id])) {                                      
                                                $data['pointsProgram'][$listKey][$i]['title'] = $id_map[$mapKey][$id];
                                                $translated[] = 'pointsProgram.' . $listKey . '[' . $i . '] id=' . $id; 
                                        }                         
                                }                                                                                       
                        }                                         
                }                                                                                                     
        }                                                                                                               
   
        // Same for top-level earningActions/redeemActions (used by /widget/config)                                     
        foreach (['earningActions' => 'earning', 'redeemActions' => 'redeem'] as $listKey => $mapKey) {
                if (!empty($data[$listKey]) && is_array($data[$listKey])) {                                           
                        foreach ($data[$listKey] as $i => $a) {                                                         
                                $id = isset($a['id']) ? (int) $a['id'] : 0;
                                if ($id && isset($id_map[$mapKey][$id])) {                                              
                                        $data[$listKey][$i]['title'] = $id_map[$mapKey][$id];
                                        $translated[] = $listKey . '[' . $i . '] id=' . $id;                            
                                }                                 
                        }                                                                                               
                }                                                 
        }                                                                                                               
                                                                  
        $data['_debug'] = [                                                                                           
                'filter'        => 'rest_post_dispatch',
                'route'         => $request->get_route(),
                'TRP_LANGUAGE'  => $GLOBALS['TRP_LANGUAGE'] ?? null,
                'translated'    => $translated,                                                                         
        ];
                                                                                                                        
        $response->set_data($data);                               
        return $response;                                                                                               
  }, 99, 3);