Use Newsletter Link Entity in Stats Notifications

[MAILPOET-2439]

lib/Entities/NewsletterLinkEntity.php

@@ -0,0 +1,97 @@
+<?php
+
+namespace MailPoet\Entities;
+
+use MailPoet\Doctrine\EntityTraits\AutoincrementedIdTrait;
+use MailPoet\Doctrine\EntityTraits\CreatedAtTrait;
+use MailPoet\Doctrine\EntityTraits\UpdatedAtTrait;
+use MailPoetVendor\Doctrine\Common\Collections\ArrayCollection;
+use MailPoetVendor\Doctrine\Common\Collections\Criteria;
+use MailPoetVendor\Doctrine\ORM\Mapping as ORM;
+
+/**
+ * @ORM\Entity()
+ * @ORM\Table(name="newsletter_links")
+ */
+class NewsletterLinkEntity {
+  use AutoincrementedIdTrait;
+  use CreatedAtTrait;
+  use UpdatedAtTrait;
+
+  /**
+   * @ORM\Column(type="integer")
+   * @var integer
+   */
+  private $newsletter_id;
+
+  /**
+   * @ORM\OneToOne(targetEntity="MailPoet\Entities\NewsletterEntity")
+   * @ORM\JoinColumn(name="newsletter_id", referencedColumnName="id")
+   * @var NewsletterEntity|null
+   */
+  private $newsletter;
+
+  /**
+   * @ORM\OneToOne(targetEntity="MailPoet\Entities\SendingQueueEntity")
+   * @ORM\JoinColumn(name="queue_id", referencedColumnName="id")
+   * @var SendingQueueEntity|null
+   */
+  private $queue;
+
+  /**
+   * @ORM\Column(type="string")
+   * @var string|null
+   */
+  private $url;
+
+  /**
+   * @ORM\Column(type="string")
+   * @var string|null
+   */
+  private $hash;
+
+  /**
+   * Extra lazy is here for `getTotalClicksCount`.
+   * If we didn't specify extra lazy the function would load all clicks and count them. This way it uses a single count query.
+   * @ORM\OneToMany(targetEntity="MailPoet\Entities\StatisticsClicksEntity", mappedBy="link", fetch="EXTRA_LAZY")
+   * @var StatisticsClicksEntity[]|ArrayCollection
+   */
+  private $clicks;
+
+  /**
+   * @return NewsletterEntity|null
+   */
+  public function getNewsletter() {
+    return $this->newsletter;
+  }
+
+  /**
+   * @return SendingQueueEntity|null
+   */
+  public function getQueue() {
+    return $this->queue;
+  }
+
+  /**
+   * @return string|null
+   */
+  public function getUrl() {
+    return $this->url;
+  }
+
+  /**
+   * @return string|null
+   */
+  public function getHash() {
+    return $this->hash;
+  }
+
+  /**
+   * @return int
+   */
+  function getTotalClicksCount() {
+    $criteria = Criteria::create()
+      ->where(Criteria::expr()->eq("link", $this));
+    return $this->clicks->matching($criteria)->count();
+  }
+}