first commit

lib/pkp/controllers/api/file/linkAction/DownloadLibraryFileLinkAction.php

@@ -0,0 +1,84 @@
+<?php
+/**
+ * @file controllers/api/file/linkAction/DownloadLibraryFileLinkAction.php
+ *
+ * Copyright (c) 2014-2021 Simon Fraser University
+ * Copyright (c) 2003-2021 John Willinsky
+ * Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
+ *
+ * @class DownloadLibraryFileLinkAction
+ *
+ * @ingroup controllers_api_file_linkAction
+ *
+ * @brief An action to download a library file.
+ */
+
+namespace PKP\controllers\api\file\linkAction;
+
+use APP\core\Request;
+use PKP\context\LibraryFile;
+use PKP\linkAction\LinkAction;
+use PKP\linkAction\request\PostAndRedirectAction;
+
+class DownloadLibraryFileLinkAction extends LinkAction
+{
+    /**
+     * Constructor
+     *
+     * @param Request $request
+     * @param LibraryFile $libraryFile the library file to
+     *  link to.
+     */
+    public function __construct($request, $libraryFile)
+    {
+        // Instantiate the redirect action request.
+        $router = $request->getRouter();
+        $redirectRequest = new PostAndRedirectAction(
+            $router->url(
+                $request,
+                null,
+                'api.file.FileApiHandler',
+                'enableLinkAction',
+                null,
+                $this->getActionArgs($libraryFile)
+            ),
+            $router->url(
+                $request,
+                null,
+                'api.file.FileApiHandler',
+                'downloadLibraryFile',
+                null,
+                $this->getActionArgs($libraryFile)
+            )
+        );
+
+        // Configure the file link action.
+        parent::__construct(
+            'downloadFile',
+            $redirectRequest,
+            htmlspecialchars($libraryFile->getLocalizedName()),
+            $libraryFile->getDocumentType()
+        );
+    }
+
+    /**
+     * Return the action arguments to address a file.
+     *
+     * @param LibraryFile $libraryFile
+     *
+     * @return array
+     */
+    public function getActionArgs(&$libraryFile)
+    {
+        assert($libraryFile instanceof LibraryFile);
+
+        // Create the action arguments array.
+        $args = ['libraryFileId' => $libraryFile->getId()];
+
+        if ($libraryFile->getSubmissionId()) {
+            $args['submissionId'] = $libraryFile->getSubmissionId();
+        }
+
+        return $args;
+    }
+}