feat(sharing): Allow to set default view mode for public shares

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

4 files changed, 205 insertions, 19 deletions

diff --git a/apps/files_sharing/src/eventbus.d.ts b/apps/files_sharing/src/eventbus.d.ts
new file mode 100644
index 00000000000..cc10ff8468f
--- /dev/null
+++ b/apps/files_sharing/src/eventbus.d.ts
@@ -0,0 +1,15 @@
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+import type { Folder, Node } from '@nextcloud/files'
+
+declare module '@nextcloud/event-bus' {
+	export interface NextcloudEvents {
+		// mapping of 'event name' => 'event type'
+		'files:list:updated': { folder: Folder, contents: Node[] }
+		'files:config:updated': { key: string, value: boolean }
+	}
+}
+
+export {}
diff --git a/apps/files_sharing/src/init-public.ts b/apps/files_sharing/src/init-public.ts
index 79aab58bd1d..72a3098a0e6 100644
--- a/apps/files_sharing/src/init-public.ts
+++ b/apps/files_sharing/src/init-public.ts
@@ -2,13 +2,16 @@
  * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
-import { getNavigation } from '@nextcloud/files'
+import type { ShareAttribute } from './sharing.d.ts'
+import { emit, subscribe, unsubscribe } from '@nextcloud/event-bus'
+import { Folder, getNavigation } from '@nextcloud/files'
 import { loadState } from '@nextcloud/initial-state'
 import registerFileDropView from './files_views/publicFileDrop.ts'
 import registerPublicShareView from './files_views/publicShare.ts'
 import registerPublicFileShareView from './files_views/publicFileShare.ts'
-import RouterService from '../../files/src/services/RouterService'
-import router from './router'
+import RouterService from '../../files/src/services/RouterService.ts'
+import router from './router/index.ts'
+import logger from './services/logger.ts'
 
 registerFileDropView()
 registerPublicShareView()
@@ -33,3 +36,28 @@ if (fileId !== null) {
 		{ ...window.OCP.Files.Router.query, openfile: 'true' },
 	)
 }
+
+// When the file list is loaded we need to apply the "userconfig" setup on the share
+subscribe('files:list:updated', loadShareConfig)
+
+/**
+ * Event handler to load the view config for the current share.
+ * This is done on the `files:list:updated` event to ensure the list and especially the config store was correctly initialized.
+ *
+ * @param context The event context
+ * @param context.folder The current folder
+ */
+function loadShareConfig({ folder }: { folder: Folder }) {
+	// Only setup config once
+	unsubscribe('files:list:updated', loadShareConfig)
+
+	// Share attributes (the same) are set on all folders of a share
+	if (folder.attributes['share-attributes']) {
+		const shareAttributes = JSON.parse(folder.attributes['share-attributes'] || '[]') as Array<ShareAttribute>
+		const gridViewAttribute = shareAttributes.find(({ scope, key }: ShareAttribute) => scope === 'config' && key === 'grid_view')
+		if (gridViewAttribute !== undefined) {
+			logger.debug('Loading share attributes', { gridViewAttribute })
+			emit('files:config:updated', { key: 'grid_view', value: gridViewAttribute.value === true })
+		}
+	}
+}
diff --git a/apps/files_sharing/src/views/SharingDetailsTab.vue b/apps/files_sharing/src/views/SharingDetailsTab.vue
index df420cf7af2..b0369df6339 100644
--- a/apps/files_sharing/src/views/SharingDetailsTab.vue
+++ b/apps/files_sharing/src/views/SharingDetailsTab.vue
@@ -169,7 +169,7 @@
 						@update:checked="queueUpdate('hideDownload')">
 						{{ t('files_sharing', 'Hide download') }}
 					</NcCheckboxRadioSwitch>
-					<NcCheckboxRadioSwitch v-if="!isPublicShare"
+					<NcCheckboxRadioSwitch v-else
 						:disabled="!canSetDownload"
 						:checked.sync="canDownload"
 						data-cy-files-sharing-share-permissions-checkbox="download">
@@ -183,6 +183,10 @@
 							:placeholder="t('files_sharing', 'Enter a note for the share recipient')"
 							:value.sync="share.note" />
 					</template>
+					<NcCheckboxRadioSwitch v-if="isPublicShare && isFolder"
+						:checked.sync="showInGridView">
+						{{ t('files_sharing', 'Show files in grid view') }}
+					</NcCheckboxRadioSwitch>
 					<ExternalShareAction v-for="action in externalLinkActions"
 						:id="action.id"
 						ref="externalLinkActions"
@@ -439,28 +443,29 @@ export default {
 				this.updateAtomicPermissions({ isReshareChecked: checked })
 			},
 		},
+
+		/**
+		 * Change the default view for public shares from "list" to "grid"
+		 */
+		showInGridView: {
+			get() {
+				return this.getShareAttribute('config', 'grid_view', false)
+			},
+			/** @param {boolean} value If the default view should be changed to "grid" */
+			set(value) {
+				this.setShareAttribute('config', 'grid_view', value)
+			},
+		},
+
 		/**
 		 * Can the sharee download files or only view them ?
 		 */
 		canDownload: {
 			get() {
-				return this.share.attributes?.find(attr => attr.key === 'download')?.value ?? true
+				return this.getShareAttribute('permissions', 'download', true)
 			},
 			set(checked) {
-				// Find the 'download' attribute and update its value
-				const downloadAttr = this.share.attributes?.find(attr => attr.key === 'download')
-				if (downloadAttr) {
-					downloadAttr.value = checked
-				} else {
-					if (this.share.attributes === null) {
-						this.$set(this.share, 'attributes', [])
-					}
-					this.share.attributes.push({
-						scope: 'permissions',
-						key: 'download',
-						value: checked,
-					})
-				}
+				this.setShareAttribute('permissions', 'download', checked)
 			},
 		},
 		/**
@@ -783,6 +788,42 @@ export default {
 	},
 
 	methods: {
+		/**
+		 * Set a share attribute on the current share
+		 * @param {string} scope The attribute scope
+		 * @param {string} key The attribute key
+		 * @param {boolean} value The value
+		 */
+		setShareAttribute(scope, key, value) {
+			if (!this.share.attributes) {
+				this.$set(this.share, 'attributes', [])
+			}
+
+			const attribute = this.share.attributes
+				.find((attr) => attr.scope === scope || attr.key === key)
+
+			if (attribute) {
+				attribute.value = value
+			} else {
+				this.share.attributes.push({
+					scope,
+					key,
+					value,
+				})
+			}
+		},
+
+		/**
+		 * Get the value of a share attribute
+		 * @param {string} scope The attribute scope
+		 * @param {string} key The attribute key
+		 * @param {undefined|boolean} fallback The fallback to return if not found
+		 */
+		getShareAttribute(scope, key, fallback = undefined) {
+			const attribute = this.share.attributes?.find((attr) => attr.scope === scope && attr.key === key)
+			return attribute?.value ?? fallback
+		},
+
 		async generateNewToken() {
 			if (this.loadingToken) {
 				return
diff --git a/cypress/e2e/files_sharing/public-share/default-view.cy.ts b/cypress/e2e/files_sharing/public-share/default-view.cy.ts
new file mode 100644
index 00000000000..62796a6420a
--- /dev/null
+++ b/cypress/e2e/files_sharing/public-share/default-view.cy.ts
@@ -0,0 +1,102 @@
+/*!
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+import type { User } from '@nextcloud/cypress'
+import { getRowForFile } from '../../files/FilesUtils.ts'
+import { createShare, setupData } from './setup-public-share.ts'
+
+describe('files_sharing: Public share - setting the default view mode', () => {
+
+	let user: User
+
+	beforeEach(() => {
+		cy.createRandomUser()
+			.then(($user) => (user = $user))
+			.then(() => setupData(user, 'shared'))
+	})
+
+	it('is by default in list view', () => {
+		const context = { user }
+		createShare(context, 'shared')
+			.then((url) => {
+				cy.logout()
+				cy.visit(url!)
+
+				// See file is visible
+				getRowForFile('foo.txt').should('be.visible')
+				// See we are in list view
+				cy.findByRole('button', { name: 'Switch to grid view' })
+					.should('be.visible')
+					.and('not.be.disabled')
+			})
+	})
+
+	it('can be toggled by user', () => {
+		const context = { user }
+		createShare(context, 'shared')
+			.then((url) => {
+				cy.logout()
+				cy.visit(url!)
+
+				// See file is visible
+				getRowForFile('foo.txt')
+					.should('be.visible')
+					// See we are in list view
+					.find('.files-list__row-icon')
+					.should(($el) => expect($el.outerWidth()).to.be.lessThan(99))
+
+				// See the grid view toggle
+				cy.findByRole('button', { name: 'Switch to grid view' })
+					.should('be.visible')
+					.and('not.be.disabled')
+					// And can change to grid view
+					.click()
+
+				// See we are in grid view
+				getRowForFile('foo.txt')
+					.find('.files-list__row-icon')
+					.should(($el) => expect($el.outerWidth()).to.be.greaterThan(99))
+
+				// See the grid view toggle is now the list view toggle
+				cy.findByRole('button', { name: 'Switch to list view' })
+					.should('be.visible')
+					.and('not.be.disabled')
+			})
+	})
+
+	it('can be changed to default grid view', () => {
+		const context = { user }
+		createShare(context, 'shared')
+			.then((url) => {
+				// Can set the "grid" view checkbox
+				cy.findByRole('list', { name: 'Link shares' })
+					.findAllByRole('listitem')
+					.first()
+					.findByRole('button', { name: /Actions/i })
+					.click()
+				cy.findByRole('menuitem', { name: /Customize link/i }).click()
+				cy.findByRole('checkbox', { name: /Show files in grid view/i })
+					.scrollIntoView()
+				cy.findByRole('checkbox', { name: /Show files in grid view/i })
+					.should('not.be.checked')
+					.check({ force: true })
+
+				// Wait for the share update
+				cy.intercept('PUT', '**/ocs/v2.php/apps/files_sharing/api/v1/shares/*').as('updateShare')
+				cy.findByRole('button', { name: 'Update share' }).click()
+				cy.wait('@updateShare').its('response.statusCode').should('eq', 200)
+
+				// Logout and visit the share
+				cy.logout()
+				cy.visit(url!)
+
+				// See file is visible
+				getRowForFile('foo.txt').should('be.visible')
+				// See we are in list view
+				cy.findByRole('button', { name: 'Switch to list view' })
+					.should('be.visible')
+					.and('not.be.disabled')
+			})
+	})
+})