Add WooCommerce revenues to computed statistics

[MAILPOET-1853]

lib/Models/Newsletter.php

@@ -6,6 +6,7 @@ use MailPoet\Settings\SettingsController;
 use MailPoet\Tasks\Sending as SendingTask;
 use MailPoet\Util\Helpers;
 use MailPoet\Util\Security;
+use MailPoet\WooCommerce\Helper as WCHelper;
 use MailPoet\WP\Emoji;
 use function MailPoet\Util\array_column;
 use MailPoet\WP\Functions as WPFunctions;
@@ -587,6 +588,27 @@ class Newsletter extends Model {
       $result[$name] = !empty($row->cnt) ? (int)$row->cnt : 0;
     }
 
+    // WooCommerce revenues
+    $woocommerce_helper = new WCHelper();
+    if ($woocommerce_helper->isWooCommerceActive()) {
+      $currency = $woocommerce_helper->getWoocommerceCurrency();
+      $row = StatisticsWooCommercePurchases::selectExpr('SUM(order_price_total) AS total')
+        ->where([
+          'newsletter_id' => $this->id,
+          'order_currency' => $currency,
+        ])
+        ->findOne();
+
+      $revenue = !empty($row->total) ? (float)$row->total : 0.0;
+      $result['revenue'] = [
+        'currency' => $currency,
+        'value' => $revenue,
+        'formatted' => $woocommerce_helper->getRawPrice($revenue, ['currency' => $currency]),
+      ];
+    } else {
+      $result['revenue'] = null;
+    }
+
     return $result;
   }
 

lib/WooCommerce/Helper.php

@@ -35,10 +35,19 @@ class Helper {
     return wc_get_product($the_product);
   }
 
+  function getWoocommerceCurrency() {
+    return get_woocommerce_currency();
+  }
+
   function getOrdersCount() {
     $counts = $this->wp->wpCountPosts('shop_order');
     return array_reduce((array)$counts, function($sum, $count_for_state) {
       return $sum + (int)$count_for_state;
     });
   }
+
+  function getRawPrice($price, array $args = []) {
+    $html_price = $this->wcPrice($price, $args);
+    return html_entity_decode(strip_tags($html_price));
+  }
 }