fix(NcRichText): more strictly resolve vue router's path

Signed-off-by: Grigorii K. Shartsev <me@shgk.me>

src/components/NcRichText/autolink.js

@@ -1,8 +1,33 @@
+/**
+ * @copyright Copyright (c) 2022 Julius Härtl <jus@bitgrid.net>
+ *
+ * @author Julius Härtl <jus@bitgrid.net>
+ * @author Raimund Schlüßler <raimund.schluessler@mailbox.org>
+ * @author Maksim Sukharev <antreesy.web@gmail.com>
+ * @author Grigorii K. Shartsev <me@shgk.me>
+ *
+ * @license AGPL-3.0-or-later
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
 import { URL_PATTERN_AUTOLINK } from './helpers.js'
 
 import { visit, SKIP } from 'unist-util-visit'
 import { u } from 'unist-builder'
-import { getBaseUrl } from '@nextcloud/router'
+import { getBaseUrl, getRootUrl } from '@nextcloud/router'
 
 const NcLink = {
 	name: 'NcLink',
@@ -84,20 +109,57 @@ export const parseUrl = (text) => {
 	return text
 }
 
+/**
+ * Try to get path for router link from an absolute or relative URL.
+ *
+ * @param {import('vue-router').default} router - VueRouter instance of the router link
+ * @param {string} url - absolute URL to parse
+ * @return {string|null} a path that can be useed in the router link or null if this URL doesn't match this router config
+ * @example http://cloud.ltd/nextcloud/index.php/app/files/favorites?fileid=2#fragment => /files/favorites?fileid=2#fragment
+ */
 export const getRoute = (router, url) => {
-	// Skip if Router is not defined in app, or baseUrl does not match
-	if (!router || !url.includes(getBaseUrl())) {
+	/**
+	 * http://cloud.ltd /nextcloud /index.php/app/files /favorites?fileid=2#fragment
+	 * |_____origin____|__________router-base__________|_________router-path________|
+	 * |__________base____________|
+	 *                 |___root___|
+	 */
+
+	// Router is not defined in the app => not an app route
+	if (!router) {
 		return null
 	}
 
-	const regexArray = router.getRoutes()
-		// route.regex matches only complete string (^.$), need to remove these characters
-		.map(route => new RegExp(route.regex.source.slice(1, -1), route.regex.flags))
+	const isAbsoluteURL = /^https?:\/\//.test(url)
 
-	for (const regex of regexArray) {
-		const match = url.search(regex)
-		if (match !== -1) {
-			return url.slice(match)
-		}
+	// URL is not a link to this Nextcloud server instance => not an app route
+	if ((isAbsoluteURL && !url.startsWith(getBaseUrl())) || (!isAbsoluteURL && !url.startsWith(getRootUrl()))) {
+		return null
+	}
+
+	// Vue 3: router.options.history.base
+	const routerBase = router.history.base
+
+	const urlWithoutOrigin = isAbsoluteURL ? url.slice(new URL(url).origin.length) : url
+
+	// Remove index.php - it is optional in general case in both, VueRouter base and the URL
+	const urlWithoutOriginAndIndexPhp = url.startsWith((isAbsoluteURL ? getBaseUrl() : getRootUrl()) + '/index.php') ? urlWithoutOrigin.replace('/index.php', '') : urlWithoutOrigin
+	const routerBaseWithoutIndexPhp = routerBase.replace('/index.php', '')
+
+	// This URL is not a part of this router by base
+	if (!urlWithoutOriginAndIndexPhp.startsWith(routerBaseWithoutIndexPhp)) {
+		return null
+	}
+
+	// Root route may have an empty '' path, fallback to '/'
+	const routerPath = urlWithoutOriginAndIndexPhp.replace(routerBaseWithoutIndexPhp, '') || '/'
+
+	// Check if there is actually matching route in the router for this path
+	const route = router.resolve(routerPath).route
+
+	if (!route.matched.length) {
+		return null
 	}
+
+	return route.fullPath
 }