rudeshark.net/packages/backend/src/misc/check-word-mute.ts

74 lines
1.6 KiB
TypeScript

import type { Note } from "@/models/entities/note.js";
import RE2 from "re2";
type NoteLike = {
userId: Note["userId"];
text: Note["text"];
files?: Note["files"];
cw?: Note["cw"];
};
function checkWordMute(
note: NoteLike,
mutedWords: Array<string | string[]>,
): boolean {
if (note == null) return false;
let text = `${note.cw ?? ""} ${note.text ?? ""}`;
if (note.files != null)
text += ` ${note.files.map((f) => f.comment ?? "").join(" ")}`;
text = text.trim();
if (text === "") return false;
for (const mutePattern of mutedWords) {
if (Array.isArray(mutePattern)) {
// Clean up
const keywords = mutePattern.filter((keyword) => keyword !== "");
if (
keywords.length > 0 &&
keywords.every((keyword) =>
text.toLowerCase().includes(keyword.toLowerCase()),
)
)
return true;
} else {
// represents RegExp
const regexp = mutePattern.match(/^\/(.+)\/(.*)$/);
// This should never happen due to input sanitisation.
if (!regexp) {
console.warn(`Found invalid regex in word mutes: ${mutePattern}`);
continue;
}
try {
if (new RE2(regexp[1], regexp[2]).test(text)) return true;
} catch (err) {
// This should never happen due to input sanitisation.
}
}
}
return false;
}
export async function getWordHardMute(
note: NoteLike,
meId: string | null | undefined,
mutedWords?: Array<string | string[]>,
): Promise<boolean> {
if (note.userId === meId || mutedWords == null) return false;
if (mutedWords.length > 0) {
return (
checkWordMute(note, mutedWords) ||
checkWordMute(note.reply, mutedWords) ||
checkWordMute(note.renote, mutedWords)
);
}
return false;
}