Move getWooCommerceSegmentSubscriber() from helper to model

[MAILPOET-2382]

lib/Models/Subscriber.php

@@ -344,6 +344,27 @@ class Subscriber extends Model {
     return $subscribers;
   }
 
+  /**
+   * @param string $customer_email
+   * @return bool|Subscriber
+   */
+  static function getWooCommerceSegmentSubscriber($customer_email) {
+    $wc_segment = Segment::getWooCommerceSegment();
+    return Subscriber::tableAlias('subscribers')
+      ->select('subscribers.*')
+      ->where('subscribers.email', $customer_email)
+      ->join(
+        MP_SUBSCRIBER_SEGMENT_TABLE,
+        'relation.subscriber_id = subscribers.id',
+        'relation'
+      )
+      ->where('relation.segment_id', $wc_segment->id)
+      ->where('relation.status', Subscriber::STATUS_SUBSCRIBED)
+      ->where('subscribers.status', Subscriber::STATUS_SUBSCRIBED)
+      ->where('subscribers.is_woocommerce_user', 1)
+      ->findOne();
+  }
+
   function customFields() {
     return $this->hasManyThrough(
       __NAMESPACE__ . '\CustomField',