From c5043ce8894b3d413929f69c6098fa92816cccd2 Mon Sep 17 00:00:00 2001
From: Ferdinand Thiessen <opensource@fthiessen.de>
Date: Fri, 4 Apr 2025 11:17:34 +0200
Subject: [PATCH] perf(files_sharing): do not require second propfind for
 account filter

Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>
---
 .../src/components/FileListFilterAccount.vue  | 79 ++++---------------
 .../src/files_filters/AccountFilter.ts        | 71 +++++++++++++++--
 2 files changed, 81 insertions(+), 69 deletions(-)

diff --git a/apps/files_sharing/src/components/FileListFilterAccount.vue b/apps/files_sharing/src/components/FileListFilterAccount.vue
index f4e4eefb6e2..46c847e7b19 100644
--- a/apps/files_sharing/src/components/FileListFilterAccount.vue
+++ b/apps/files_sharing/src/components/FileListFilterAccount.vue
@@ -36,14 +36,11 @@
 </template>
 
 <script setup lang="ts">
-import type { IAccountData } from '../filters/AccountFilter.ts'
+import type { IAccountData } from '../files_filters/AccountFilter.ts'
 
 import { translate as t } from '@nextcloud/l10n'
-import { ShareType } from '@nextcloud/sharing'
 import { mdiAccountMultiple } from '@mdi/js'
-import { useBrowserLocation } from '@vueuse/core'
 import { computed, ref, watch } from 'vue'
-import { useNavigation } from '../../../files/src/composables/useNavigation.ts'
 
 import FileListFilter from '../../../files/src/components/FileListFilter/FileListFilter.vue'
 import NcActionButton from '@nextcloud/vue/components/NcActionButton'
@@ -61,8 +58,6 @@ const emit = defineEmits<{
 	(event: 'update:accounts', value: IAccountData[]): void
 }>()
 
-const { currentView } = useNavigation()
-const currentLocation = useBrowserLocation()
 const accountFilter = ref('')
 const availableAccounts = ref<IUserSelectData[]>([])
 const selectedAccounts = ref<IUserSelectData[]>([])
@@ -105,53 +100,6 @@ watch(selectedAccounts, () => {
 	emit('update:accounts', accounts)
 })
 
-/**
- * Update the accounts owning nodes or have nodes shared to them
- * @param path The path inside the current view to load for accounts
- */
-async function updateAvailableAccounts(path: string = '/') {
-	availableAccounts.value = []
-	if (!currentView.value) {
-		return
-	}
-
-	const { contents } = await currentView.value.getContents(path)
-	const available = new Map<string, IUserSelectData>()
-	for (const node of contents) {
-		const owner = node.owner
-		if (owner && !available.has(owner)) {
-			available.set(owner, {
-				id: owner,
-				user: owner,
-				displayName: node.attributes['owner-display-name'] ?? node.owner,
-			})
-		}
-
-		const sharees = node.attributes.sharees?.sharee
-		if (sharees) {
-			// ensure sharees is an array (if only one share then it is just an object)
-			for (const sharee of [sharees].flat()) {
-				// Skip link shares and other without user
-				if (sharee.id === '') {
-					continue
-				}
-				if (sharee.type !== ShareType.User && sharee.type !== ShareType.Remote) {
-					continue
-				}
-				// Add if not already added
-				if (!available.has(sharee.id)) {
-					available.set(sharee.id, {
-						id: sharee.id,
-						user: sharee.id,
-						displayName: sharee['display-name'],
-					})
-				}
-			}
-		}
-	}
-	availableAccounts.value = [...available.values()]
-}
-
 /**
  * Reset this filter
  */
@@ -159,18 +107,21 @@ function resetFilter() {
 	selectedAccounts.value = []
 	accountFilter.value = ''
 }
-defineExpose({ resetFilter, toggleAccount })
 
-// When the current view changes or the current directory,
-// then we need to rebuild the available accounts
-watch([currentView, currentLocation], () => {
-	if (currentView.value) {
-		// we have no access to the files router here...
-		const path = (currentLocation.value.search ?? '?dir=/').match(/(?<=&|\?)dir=([^&#]+)/)?.[1]
-		resetFilter()
-		updateAvailableAccounts(decodeURIComponent(path ?? '/'))
-	}
-}, { immediate: true })
+/**
+ * Update list of available accounts in current view.
+ *
+ * @param accounts - Accounts to use
+ */
+function setAvailableAccounts(accounts: IAccountData[]): void {
+	availableAccounts.value = accounts.map(({ uid, displayName }) => ({ displayName, id: uid, user: uid }))
+}
+
+defineExpose({
+	resetFilter,
+	setAvailableAccounts,
+	toggleAccount,
+})
 </script>
 
 <style scoped lang="scss">
diff --git a/apps/files_sharing/src/files_filters/AccountFilter.ts b/apps/files_sharing/src/files_filters/AccountFilter.ts
index 8da4d85d67c..56bcef07200 100644
--- a/apps/files_sharing/src/files_filters/AccountFilter.ts
+++ b/apps/files_sharing/src/files_filters/AccountFilter.ts
@@ -4,8 +4,11 @@
  */
 import type { IFileListFilterChip, INode } from '@nextcloud/files'
 
+import { subscribe } from '@nextcloud/event-bus'
 import { FileListFilter, registerFileListFilter } from '@nextcloud/files'
+import { ShareType } from '@nextcloud/sharing'
 import Vue from 'vue'
+
 import FileListFilterAccount from '../components/FileListFilterAccount.vue'
 
 export interface IAccountData {
@@ -13,18 +16,28 @@ export interface IAccountData {
 	displayName: string
 }
 
-type CurrentInstance = Vue & { resetFilter: () => void, toggleAccount: (account: string) => void }
+type CurrentInstance = Vue & {
+	resetFilter: () => void
+	setAvailableAccounts: (accounts: IAccountData[]) => void
+	toggleAccount: (account: string) => void
+}
 
 /**
  * File list filter to filter by owner / sharee
  */
 class AccountFilter extends FileListFilter {
 
+	private availableAccounts: IAccountData[]
 	private currentInstance?: CurrentInstance
 	private filterAccounts?: IAccountData[]
 
 	constructor() {
 		super('files_sharing:account', 100)
+		this.availableAccounts = []
+
+		subscribe('files:list:updated', ({ contents }) => {
+			this.updateAvailableAccounts(contents)
+		})
 	}
 
 	public mount(el: HTMLElement) {
@@ -33,11 +46,11 @@ class AccountFilter extends FileListFilter {
 		}
 
 		const View = Vue.extend(FileListFilterAccount as never)
-		this.currentInstance = new View({
-			el,
-		})
-			.$on('update:accounts', this.setAccounts.bind(this))
+		this.currentInstance = new View({ el })
+			.$on('update:accounts', (accounts?: IAccountData[]) => this.setAccounts(accounts))
 			.$mount() as CurrentInstance
+		this.currentInstance
+			.setAvailableAccounts(this.availableAccounts)
 	}
 
 	public filter(nodes: INode[]): INode[] {
@@ -70,6 +83,11 @@ class AccountFilter extends FileListFilter {
 		this.currentInstance?.resetFilter()
 	}
 
+	/**
+	 * Set accounts that should be filtered.
+	 *
+	 * @param accounts - Account to filter or undefined if inactive.
+	 */
 	public setAccounts(accounts?: IAccountData[]) {
 		this.filterAccounts = accounts
 		let chips: IFileListFilterChip[] = []
@@ -85,6 +103,49 @@ class AccountFilter extends FileListFilter {
 		this.filterUpdated()
 	}
 
+	/**
+	 * Update the accounts owning nodes or have nodes shared to them.
+	 *
+	 * @param nodes - The current content of the file list.
+	 */
+	protected updateAvailableAccounts(nodes: INode[]): void {
+		const available = new Map<string, IAccountData>()
+
+		for (const node of nodes) {
+			const owner = node.owner
+			if (owner && !available.has(owner)) {
+				available.set(owner, {
+					uid: owner,
+					displayName: node.attributes['owner-display-name'] ?? node.owner,
+				})
+			}
+
+			// ensure sharees is an array (if only one share then it is just an object)
+			const sharees: { id: string, 'display-name': string, type: ShareType }[] = [node.attributes.sharees?.sharee].flat().filter(Boolean)
+			for (const sharee of [sharees].flat()) {
+				// Skip link shares and other without user
+				if (sharee.id === '') {
+					continue
+				}
+				if (sharee.type !== ShareType.User && sharee.type !== ShareType.Remote) {
+					continue
+				}
+				// Add if not already added
+				if (!available.has(sharee.id)) {
+					available.set(sharee.id, {
+						uid: sharee.id,
+						displayName: sharee['display-name'],
+					})
+				}
+			}
+		}
+
+		this.availableAccounts = [...available.values()]
+		if (this.currentInstance) {
+			this.currentInstance.setAvailableAccounts(this.availableAccounts)
+		}
+	}
+
 }
 
 /**