fix(files): do not show extension warning for folders renaming

apps/files/src/store/renaming.ts

@@ -7,7 +7,7 @@
 
 import axios, { isAxiosError } from '@nextcloud/axios'
 import { emit, subscribe } from '@nextcloud/event-bus'
-import { NodeStatus } from '@nextcloud/files'
+import { FileType, NodeStatus } from '@nextcloud/files'
 import { DialogBuilder } from '@nextcloud/dialogs'
 import { t } from '@nextcloud/l10n'
 import { basename, dirname, extname } from 'path'
@@ -91,7 +91,7 @@
 			/**
 			 * Execute the renaming.
 			 * This will rename the node set as `renamingNode` to the configured new name `newName`.
 			 * @return true if success, false if skipped (e.g. new and old name are the same)
 			 * @throws Error if renaming fails, details are set in the error message
 			 */
 			async rename(): Promise<boolean> {
@@ -103,10 +103,10 @@
 				const oldName = this.renamingNode.basename
 				const oldEncodedSource = this.renamingNode.encodedSource
 
-				// Check for extension change
+				// Check for extension change for files
 				const oldExtension = extname(oldName)
 				const newExtension = extname(newName)
-				if (oldExtension !== newExtension) {
+				if (oldExtension !== newExtension && this.renamingNode.type === FileType.File) {
 					const proceed = await showWarningDialog(oldExtension, newExtension)
 					if (!proceed) {
 						return false

cypress/e2e/files/files-renaming.cy.ts

@@ -4,7 +4,7 @@
  */
 
 import type { User } from '@nextcloud/cypress'
-import { calculateViewportHeight, getRowForFile, haveValidity, renameFile, triggerActionForFile } from './FilesUtils'
+import { calculateViewportHeight, createFolder, getRowForFile, haveValidity, renameFile, triggerActionForFile } from './FilesUtils'
 
 describe('files: Rename nodes', { testIsolation: true }, () => {
 	let user: User
@@ -193,4 +193,67 @@ describe('files: Rename nodes', { testIsolation: true }, () => {
 			.findByRole('textbox', { name: 'Filename' })
 			.should('not.exist')
 	})
+
+	it('shows warning on extension change', () => {
+		getRowForFile('file.txt').should('be.visible')
+
+		triggerActionForFile('file.txt', 'rename')
+		getRowForFile('file.txt')
+			.findByRole('textbox', { name: 'Filename' })
+			.should('be.visible')
+			.type('{selectAll}file.md')
+			.should(haveValidity(''))
+			.type('{enter}')
+
+		// See warning dialog
+		cy.findByRole('dialog', { name: 'Change file extension' })
+			.should('be.visible')
+			.findByRole('button', { name: /use/i })
+			.click()
+
+		// See it is renamed
+		getRowForFile('file.md').should('be.visible')
+	})
+
+	it('shows warning on extension change and allow cancellation', () => {
+		getRowForFile('file.txt').should('be.visible')
+
+		triggerActionForFile('file.txt', 'rename')
+		getRowForFile('file.txt')
+			.findByRole('textbox', { name: 'Filename' })
+			.should('be.visible')
+			.type('{selectAll}file.md')
+			.should(haveValidity(''))
+			.type('{enter}')
+
+		// See warning dialog
+		cy.findByRole('dialog', { name: 'Change file extension' })
+			.should('be.visible')
+			.findByRole('button', { name: /keep/i })
+			.click()
+
+		// See it is not renamed
+		getRowForFile('file.txt').should('be.visible')
+		getRowForFile('file.md').should('not.exist')
+	})
+
+	it('does not show warning on folder renaming with a dot', () => {
+		createFolder('folder.2024')
+
+		getRowForFile('folder.2024').should('be.visible')
+
+		triggerActionForFile('folder.2024', 'rename')
+		getRowForFile('folder.2024')
+			.findByRole('textbox', { name: 'Folder name' })
+			.should('be.visible')
+			.type('{selectAll}folder.2025')
+			.should(haveValidity(''))
+			.type('{enter}')
+
+		// See warning dialog
+		cy.get('[role=dialog]').should('not.exist')
+
+		// See it is not renamed
+		getRowForFile('folder.2025').should('be.visible')
+	})
 })