[#42160] added download api

modules/storages/lib/api/v3/file_links/file_links_api.rb

@@ -63,6 +63,7 @@ module API
             # Additional API definitions are mounted under the current namespace, hence they are
             # appended to /api/v3/file_links/:file_link_id/...
             mount ::API::V3::FileLinks::FileLinksOpenAPI
+            mount ::API::V3::FileLinks::FileLinksDownloadAPI
           end
         end
       end

modules/storages/lib/api/v3/file_links/file_links_download_api.rb

@@ -0,0 +1,43 @@
+#-- copyright
+# OpenProject is an open source project management software.
+# Copyright (C) 2012-2022 the OpenProject GmbH
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License version 3.
+#
+# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
+# Copyright (C) 2006-2013 Jean-Philippe Lang
+# Copyright (C) 2010-2013 the ChiliProject Team
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+# See COPYRIGHT and LICENSE files for more details.
+#++
+
+module API
+  module V3
+    module FileLinks
+      class FileLinksDownloadAPI < ::API::OpenProjectAPI
+        resources :download do
+          get do
+            url = "https://example.org"
+            redirect url, body: "The requested resource can be downloaded from #{url}"
+            status 303
+          end
+        end
+      end
+    end
+  end
+end