Filter newsletter subscribers by selected shop context in module configuration

Author: Codencode

ps_emailsubscription.php

@@ -505,6 +505,19 @@ public function newsletterRegistration($hookName = null)
 
     public function getSubscribers()
     {
+        $shopIds = [];
+        if (Configuration::get('PS_MULTISHOP_FEATURE_ACTIVE')) {
+            $context = Context::getContext();
+            $shopContext = Shop::getContext();
+
+            if ($shopContext === Shop::CONTEXT_SHOP) {
+                $shopIds = [(int) $context->shop->id];
+            } elseif ($shopContext === Shop::CONTEXT_GROUP) {
+                $shops = ShopGroup::getShopsFromGroup((int) $context->shop->id_shop_group);
+                $shopIds = array_column($shops, 'id_shop');
+            }
+        }
+
         $dbquery = new DbQuery();
         $dbquery->select('c.`id_customer` AS `id`, s.`name` AS `shop_name`, gl.`name` AS `gender`, c.`lastname`, c.`firstname`, c.`email`, c.`newsletter` AS `subscribed`, c.`newsletter_date_add`, l.`iso_code`');
         $dbquery->from('customer', 'c');
@@ -517,6 +530,10 @@ public function getSubscribers()
             $dbquery->where('c.`email` LIKE \'%' . pSQL($this->_searched_email) . '%\' ');
         }
 
+        if (!empty($shopIds)) {
+            $dbquery->where('c.`id_shop` IN (' . implode(',', $shopIds) . ')');
+        }
+
         $customers = Db::getInstance((bool) _PS_USE_SQL_SLAVE_)->executeS($dbquery->build());
 
         $dbquery = new DbQuery();
@@ -529,6 +546,10 @@ public function getSubscribers()
             $dbquery->where('e.`email` LIKE \'%' . pSQL($this->_searched_email) . '%\' ');
         }
 
+        if (!empty($shopIds)) {
+            $dbquery->where('e.`id_shop` IN (' . implode(',', $shopIds) . ')');
+        }
+
         $non_customers = Db::getInstance()->executeS($dbquery->build());
 
         $subscribers = array_merge($customers, $non_customers);