fix(files): make sure to always have proper plural forms

counted words should always be translated using `n`.
We can still simply concat the segments with punctation, this always
works regardless of the language used (even with RTL / LTR languages).

Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>

apps/files/src/utils/fileUtils.ts

@@ -3,15 +3,15 @@
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 import { FileType, type Node } from '@nextcloud/files'
-import { translate as t, translatePlural as n } from '@nextcloud/l10n'
+import { n } from '@nextcloud/l10n'
 
 /**
  * Extract dir and name from file path
  *
- * @param {string} path the full path
- * @return {string[]} [dirPath, fileName]
+ * @param path - The full path
+ * @return [dirPath, fileName]
  */
-export const extractFilePaths = function(path) {
+export function extractFilePaths(path: string): [string, string] {
 	const pathSections = path.split('/')
 	const fileName = pathSections[pathSections.length - 1]
 	const dirPath = pathSections.slice(0, pathSections.length - 1).join('/')
@@ -20,32 +20,28 @@ export const extractFilePaths = function(path) {
 
 /**
  * Generate a translated summary of an array of nodes
- * @param {Node[]} nodes the nodes to summarize
- * @param {number} hidden the number of hidden nodes
- * @return {string}
+ *
+ * @param nodes - The nodes to summarize
+ * @param hidden - The number of hidden nodes
  */
-export const getSummaryFor = (nodes: Node[], hidden = 0): string => {
+export function getSummaryFor(nodes: Node[], hidden = 0): string {
 	const fileCount = nodes.filter(node => node.type === FileType.File).length
 	const folderCount = nodes.filter(node => node.type === FileType.Folder).length
 
-	let summary = ''
-
-	if (fileCount === 0) {
-		summary = n('files', '{folderCount} folder', '{folderCount} folders', folderCount, { folderCount })
-	} else if (folderCount === 0) {
-		summary = n('files', '{fileCount} file', '{fileCount} files', fileCount, { fileCount })
-	} else if (fileCount === 1) {
-		summary = n('files', '1 file and {folderCount} folder', '1 file and {folderCount} folders', folderCount, { folderCount })
-	} else if (folderCount === 1) {
-		summary = n('files', '{fileCount} file and 1 folder', '{fileCount} files and 1 folder', fileCount, { fileCount })
-	} else {
-		summary = t('files', '{fileCount} files and {folderCount} folders', { fileCount, folderCount })
+	const summary: string[] = []
+	if (fileCount > 0 || folderCount === 0) {
+		const fileSummary = n('files', '%n file', '%n files', fileCount)
+		summary.push(fileSummary)
+	}
+	if (folderCount > 0) {
+		const folderSummary = n('files', '%n folder', '%n folders', folderCount)
+		summary.push(folderSummary)
 	}
-
 	if (hidden > 0) {
-		// TRANSLATORS: This is a summary of files and folders, where {hiddenFilesAndFolders} is the number of hidden files and folders
-		summary += ' ' + n('files', '(%n hidden)', ' (%n hidden)', hidden)
+		// TRANSLATORS: This is the number of hidden files or folders
+		const hiddenSummary = n('files', '%n hidden', '%n hidden', hidden)
+		summary.push(hiddenSummary)
 	}
 
-	return summary
+	return summary.join(' · ')
 }