Move and rename files (2/4) (#987)

Signed-off-by: Tilman Vatteroth <tilman.vatteroth@tu-dortmund.de>

src/components/editor-page/document-bar/revisions/utils.ts

@@ -0,0 +1,32 @@
+/*
+ * SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { Revision } from '../../../../api/revisions/types'
+import { getUserById } from '../../../../api/users'
+import { UserResponse } from '../../../../api/users/types'
+import { download } from '../../../common/download/download'
+
+export const downloadRevision = (noteId: string, revision: Revision | null): void => {
+  if (!revision) {
+    return
+  }
+  download(revision.content, `${noteId}-${revision.timestamp}.md`, 'text/markdown')
+}
+
+export const getUserDataForRevision = (authors: string[]): UserResponse[] => {
+  const users: UserResponse[] = []
+  authors.forEach((author, index) => {
+    if (index > 9) {
+      return
+    }
+    getUserById(author)
+      .then(userData => {
+        users.push(userData)
+      })
+      .catch((error) => console.error(error))
+  })
+  return users
+}