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lib/pkp/controllers/grid/queries/traits/StageMailable.php

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+<?php
+
+/**
+ * @file mail/traits/StageMailable.php
+ *
+ * Copyright (c) 2014-2022 Simon Fraser University
+ * Copyright (c) 2000-2022 John Willinsky
+ * Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
+ *
+ * @class StageMailable
+ *
+ * @ingroup mail_traits
+ *
+ * @brief Mailable trait to associate Workflow Stage with specific Discussion email
+ */
+
+namespace PKP\controllers\grid\queries\traits;
+
+use APP\submission\Submission;
+use PKP\context\Context;
+use PKP\mail\Mailable;
+use PKP\mail\mailables\DiscussionCopyediting;
+use PKP\mail\mailables\DiscussionProduction;
+use PKP\mail\mailables\DiscussionReview;
+use PKP\mail\mailables\DiscussionSubmission;
+
+trait StageMailable
+{
+    abstract public function getStageId();
+
+    /**
+     * @return Mailable which corresponds to the given workflow stage
+     */
+    protected function getStageMailable(Context $context, Submission $submission): Mailable
+    {
+        $map = [
+            WORKFLOW_STAGE_ID_SUBMISSION => DiscussionSubmission::class,
+            WORKFLOW_STAGE_ID_INTERNAL_REVIEW => DiscussionReview::class,
+            WORKFLOW_STAGE_ID_EXTERNAL_REVIEW => DiscussionReview::class,
+            WORKFLOW_STAGE_ID_EDITING => DiscussionCopyediting::class,
+            WORKFLOW_STAGE_ID_PRODUCTION => DiscussionProduction::class,
+        ];
+        $mailableClassName = $map[$this->getStageId()];
+        return new $mailableClassName($context, $submission);
+    }
+}