Move plugin files to a subfolder

[MAILPOET-3988]

mailpoet/lib/Settings/SettingsRepository.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace MailPoet\Settings;
+
+use MailPoet\Doctrine\Repository;
+use MailPoet\Entities\SettingEntity;
+use MailPoet\WP\Functions as WPFunctions;
+use MailPoetVendor\Carbon\Carbon;
+
+/**
+ * @extends Repository<SettingEntity>
+ */
+class SettingsRepository extends Repository {
+  public function findOneByName($name) {
+    return $this->doctrineRepository->findOneBy(['name' => $name]);
+  }
+
+  public function createOrUpdateByName($name, $value) {
+    // Temporarily use low-level INSERT ... ON DUPLICATE KEY UPDATE query to avoid race conditions
+    // between entity fetch and creation with multiple concurrent requests. This will be replaced
+    // by a code solving atomicity of create-or-update on entity (ORM) level in a follow-up ticket.
+    $now = Carbon::createFromTimestamp(WPFunctions::get()->currentTime('timestamp'));
+    $tableName = $this->entityManager->getClassMetadata(SettingEntity::class)->getTableName();
+    $this->entityManager->getConnection()->executeStatement("
+      INSERT INTO $tableName (name, value, created_at, updated_at)
+      VALUES (:name, :value, :now, :now)
+      ON DUPLICATE KEY UPDATE value = :value, updated_at = :now
+    ", [
+      'name' => $name,
+      'value' => is_array($value) ? serialize($value) : $value,
+      'now' => $now,
+    ]);
+    $this->entityManager->getUnitOfWork()->clear(SettingEntity::class);
+  }
+
+  protected function getEntityClassName() {
+    return SettingEntity::class;
+  }
+}