zappyzep/backend/src/plugins/Automod/triggers/matchWords.ts
2024-01-14 14:25:42 +00:00

87 lines
2.8 KiB
TypeScript

import escapeStringRegexp from "escape-string-regexp";
import z from "zod";
import { normalizeText } from "../../../utils/normalizeText";
import { stripMarkdown } from "../../../utils/stripMarkdown";
import { getTextMatchPartialSummary } from "../functions/getTextMatchPartialSummary";
import { MatchableTextType, matchMultipleTextTypesOnMessage } from "../functions/matchMultipleTextTypesOnMessage";
import { automodTrigger } from "../helpers";
interface MatchResultType {
word: string;
type: MatchableTextType;
}
const regexCache = new WeakMap<any, RegExp[]>();
const configSchema = z.strictObject({
words: z.array(z.string().max(2000)).max(512),
case_sensitive: z.boolean().default(false),
only_full_words: z.boolean().default(true),
normalize: z.boolean().default(false),
loose_matching: z.boolean().default(false),
loose_matching_threshold: z.number().int().default(4),
strip_markdown: z.boolean().default(false),
match_messages: z.boolean().default(true),
match_embeds: z.boolean().default(false),
match_visible_names: z.boolean().default(false),
match_usernames: z.boolean().default(false),
match_nicknames: z.boolean().default(false),
match_custom_status: z.boolean().default(false),
});
export const MatchWordsTrigger = automodTrigger<MatchResultType>()({
configSchema,
async match({ pluginData, context, triggerConfig: trigger }) {
if (!context.message) {
return;
}
if (!regexCache.has(trigger)) {
const looseMatchingThreshold = Math.min(Math.max(trigger.loose_matching_threshold, 1), 64);
const patterns = trigger.words.map((word) => {
let pattern = trigger.loose_matching
? [...word].map((c) => escapeStringRegexp(c)).join(`(?:\\s*|.{0,${looseMatchingThreshold})`)
: escapeStringRegexp(word);
if (trigger.only_full_words) {
pattern = `\\b${pattern}\\b`;
}
return pattern;
});
const mergedRegex = new RegExp(patterns.map((p) => `(?:${p})`).join("|"), trigger.case_sensitive ? "" : "i");
regexCache.set(trigger, [mergedRegex]);
}
const regexes = regexCache.get(trigger)!;
for await (let [type, str] of matchMultipleTextTypesOnMessage(pluginData, trigger, context.message)) {
if (trigger.strip_markdown) {
str = stripMarkdown(str);
}
if (trigger.normalize) {
str = normalizeText(str);
}
for (const regex of regexes) {
if (regex.test(str)) {
return {
extra: {
type,
word: "",
},
};
}
}
}
return null;
},
renderMatchInformation({ pluginData, contexts, matchResult }) {
const partialSummary = getTextMatchPartialSummary(pluginData, matchResult.extra.type, contexts[0]);
return `Matched word in ${partialSummary}`;
},
});