merge: Add pattern checker for word mutes (resolves #1003) (!1020)

View MR for information: https://activitypub.software/TransFem-org/Sharkey/-/merge_requests/1020

Closes #1003

Approved-by: dakkar <dakkar@thenautilus.net>
Approved-by: Marie <github@yuugi.dev>

packages/frontend/src/utility/check-word-mute.ts

@@ -4,12 +4,12 @@
  */
 import * as Misskey from 'misskey-js';
 
-export function checkWordMute(note: Misskey.entities.Note, me: Misskey.entities.UserLite | null | undefined, mutedWords: Array<string | string[]>): Array<string | string[]> | false {
+export function checkWordMute(note: string | Misskey.entities.Note, me: Misskey.entities.UserLite | null | undefined, mutedWords: Array<string | string[]>): Array<string | string[]> | false {
 	// 自分自身
-	if (me && (note.userId === me.id)) return false;
+	if (me && typeof(note) === 'object' && (note.userId === me.id)) return false;
 
 	if (mutedWords.length > 0) {
-		const text = getNoteText(note);
+		const text = typeof(note) === 'object' ? getNoteText(note) : note;
 
 		if (text === '') return false;
 

packages/frontend/src/utility/parse-mutes.ts

@@ -0,0 +1,41 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import * as os from '@/os';
+import { i18n } from '@/i18n';
+
+export type Mutes = (string | string[])[];
+
+export function parseMutes(mutes: string): Mutes {
+	// split into lines, remove empty lines and unnecessary whitespace
+	const lines = mutes.trim().split('\n').map(line => line.trim()).filter(line => line !== '');
+	const outLines: Mutes = Array.from(lines);
+
+	// check each line if it is a RegExp or not
+	for (let i = 0; i < lines.length; i++) {
+		const line = lines[i];
+		const regexp = line.match(/^\/(.+)\/(.*)$/);
+		if (regexp) {
+			// check that the RegExp is valid
+			try {
+				new RegExp(regexp[1], regexp[2]);
+				// note that regex lines will not be split by spaces!
+			} catch (err: any) {
+				// invalid syntax: do not save, do not reset changed flag
+				os.alert({
+					type: 'error',
+					title: i18n.ts.regexpError,
+					text: i18n.tsx.regexpErrorDescription({ tab: 'word mute', line: i + 1 }) + '\n' + err.toString(),
+				});
+				// re-throw error so these invalid settings are not saved
+				throw err;
+			}
+		} else {
+			outLines[i] = line.split(' ');
+		}
+	}
+
+	return outLines;
+}