fix(app): follow instance branding in tab title and favicon (#3288)

fluxer_app/src/features/app/state/RuntimeDocumentBranding.ts

@@ -1,14 +1,9 @@
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
 import {DEFAULT_APP_SHELL_BRANDING} from '@app/features/app/state/AppShellBranding';
+import {setDocumentTitleProductName} from '@app/features/window/hooks/useFluxerDocumentTitle';
 import type {InstanceAppPublic} from '@fluxer/instance_bootstrap/src/Types';
 
-let lastProductName = DEFAULT_APP_SHELL_BRANDING.productName;
-
-function escapeRegExp(value: string): string {
-	return value.replace(/[.*+?^${}()|[\]\\]/gu, '\\$&');
-}
-
 function brandedLink(rel: string): HTMLLinkElement | null {
 	return document.head.querySelector<HTMLLinkElement>(`link[rel="${rel}"][data-fluxer-branding="true"]`);
 }
@@ -28,6 +23,22 @@ function removeLink(rel: string): void {
 	brandedLink(rel)?.remove();
 }
 
+function suspendDefaultLinks(rel: string): void {
+	for (const link of document.head.querySelectorAll<HTMLLinkElement>(
+		`link[rel="${rel}"]:not([data-fluxer-branding])`,
+	)) {
+		link.dataset.fluxerDefaultRel = rel;
+		link.rel = '';
+	}
+}
+
+function restoreDefaultLinks(rel: string): void {
+	for (const link of document.head.querySelectorAll<HTMLLinkElement>(`link[data-fluxer-default-rel="${rel}"]`)) {
+		link.rel = rel;
+		delete link.dataset.fluxerDefaultRel;
+	}
+}
+
 function brandedMeta(name: string): HTMLMetaElement | null {
 	return document.head.querySelector<HTMLMetaElement>(`meta[name="${name}"][data-fluxer-branding="true"]`);
 }
@@ -47,25 +58,16 @@ function removeMeta(name: string): void {
 	brandedMeta(name)?.remove();
 }
 
-function replaceTitleProductName(nextProductName: string): void {
-	if (lastProductName === nextProductName) return;
-	const prefix = new RegExp(`^(\\(\\d+\\)\\s+|\\u2022\\s+)?${escapeRegExp(lastProductName)}(?=$| \\| )`, 'u');
-	if (prefix.test(document.title)) {
-		document.title = document.title.replace(prefix, (_match, notificationPrefix: string | undefined) => {
-			return `${notificationPrefix ?? ''}${nextProductName}`;
-		});
-	}
-}
-
 function applyDocumentBranding(productName: string, faviconUrl: string | null, themeColor: string | null): void {
 	if (typeof document === 'undefined') return;
-	replaceTitleProductName(productName);
-	lastProductName = productName;
+	setDocumentTitleProductName(productName);
 	setMeta('application-name', productName);
 	setMeta('apple-mobile-web-app-title', productName);
 	if (faviconUrl === null) {
 		removeLink('icon');
+		restoreDefaultLinks('icon');
 	} else {
+		suspendDefaultLinks('icon');
 		setLink('icon', faviconUrl);
 	}
 	if (themeColor === null) {

fluxer_app/src/features/window/hooks/useFluxerDocumentTitle.ts

@@ -3,9 +3,7 @@
 import {PRODUCT_NAME} from '@app/features/app/config/I18nDisplayConstants';
 import {getCurrentLocale} from '@app/features/user/utils/LocaleUtils';
 import {formatNumber} from '@pkgs/number_utils/src/NumberFormatting';
-import {useEffect, useRef} from 'react';
-
-const TITLE_PREFIX = PRODUCT_NAME;
+import {useEffect} from 'react';
 
 type TitlePart = string | null | undefined;
 type TitleInput = TitlePart | Array<TitlePart>;
@@ -19,7 +17,8 @@ interface BadgeState {
 	hasUnread: boolean;
 }
 
-let currentBaseTitle = TITLE_PREFIX;
+let titleProductName = PRODUCT_NAME;
+let currentTitleParts: ReadonlyArray<string> = [];
 let currentBadgeState: BadgeState = {mentionCount: 0, hasUnread: false};
 
 const normalizeTitleParts = (value?: TitleInput): Array<string> => {
@@ -29,11 +28,11 @@ const normalizeTitleParts = (value?: TitleInput): Array<string> => {
 	const parts = Array.isArray(value) ? value : [value];
 	return parts.map((part) => part?.trim()).filter((part): part is string => Boolean(part));
 };
-const buildDocumentTitle = (parts: Array<string>): string => {
+const buildDocumentTitle = (parts: ReadonlyArray<string>): string => {
 	if (!parts.length) {
-		return TITLE_PREFIX;
+		return titleProductName;
 	}
-	return [TITLE_PREFIX, ...parts].join(' | ');
+	return [titleProductName, ...parts].join(' | ');
 };
 const applyBadgePrefix = (baseTitle: string, badge: BadgeState): string => {
 	if (badge.mentionCount > 0) {
@@ -45,25 +44,29 @@ const applyBadgePrefix = (baseTitle: string, badge: BadgeState): string => {
 	return baseTitle;
 };
 const updateDocumentTitle = (): void => {
-	document.title = applyBadgePrefix(currentBaseTitle, currentBadgeState);
+	document.title = applyBadgePrefix(buildDocumentTitle(currentTitleParts), currentBadgeState);
+};
+export const setDocumentTitleProductName = (productName: string): void => {
+	if (titleProductName === productName) return;
+	titleProductName = productName;
+	updateDocumentTitle();
 };
 export const updateDocumentTitleBadge = (mentionCount: number, hasUnread: boolean): void => {
 	currentBadgeState = {mentionCount, hasUnread};
 	updateDocumentTitle();
 };
 export const useFluxerDocumentTitle = (title?: TitleInput, options?: UseDocumentTitleOptions) => {
-	const parts = normalizeTitleParts(title);
-	const fullTitle = buildDocumentTitle(parts);
-	const prevTitleRef = useRef<string | undefined>(undefined);
+	const partsKey = JSON.stringify(normalizeTitleParts(title));
+	const preserveTitleOnUnmount = options?.preserveTitleOnUnmount;
 	useEffect(() => {
-		prevTitleRef.current = currentBaseTitle;
-		currentBaseTitle = fullTitle;
+		const previousParts = currentTitleParts;
+		currentTitleParts = JSON.parse(partsKey) as Array<string>;
 		updateDocumentTitle();
 		return () => {
-			if (!options?.preserveTitleOnUnmount && prevTitleRef.current) {
-				currentBaseTitle = prevTitleRef.current;
+			if (!preserveTitleOnUnmount) {
+				currentTitleParts = previousParts;
 				updateDocumentTitle();
 			}
 		};
-	}, [fullTitle, options?.preserveTitleOnUnmount]);
+	}, [partsKey, preserveTitleOnUnmount]);
 };