96 lines
2.8 KiB
TypeScript
96 lines
2.8 KiB
TypeScript
/*
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* SPDX-FileCopyrightText: syuilo and misskey-project
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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import { URL } from 'node:url';
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import punycode from 'punycode.js';
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import RE2 from 're2';
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import { Inject, Injectable } from '@nestjs/common';
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import { DI } from '@/di-symbols.js';
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import type { Config } from '@/config.js';
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import { bindThis } from '@/decorators.js';
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@Injectable()
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export class UtilityService {
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constructor(
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@Inject(DI.config)
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private config: Config,
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) {
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}
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@bindThis
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public getFullApAccount(username: string, host: string | null): string {
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return host ? `${username}@${this.normalizeHost(host)}` : `${username}@${this.normalizeHost(this.config.host)}`;
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}
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@bindThis
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public isSelfHost(host: string | null): boolean {
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if (host == null) return true;
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return this.normalizeHost(this.config.host) === this.normalizeHost(host);
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}
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@bindThis
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public isUriLocal(uri: string): boolean {
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return this.normalizeHost(this.config.hostname) === this.extractHost(uri);
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}
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@bindThis
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public isItemListedIn(item: string | null, list: string[] | undefined): boolean {
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if (!list || !item) return false;
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list = list.map(x => '.' + this.normalizeHost(x).split(':')[0]);
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item = '.' + this.normalizeHost(item).split(':')[0];
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return list.some(x => item.endsWith(x));
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}
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@bindThis
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public concatNoteContentsForKeyWordCheck(content: {
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cw?: string | null;
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text?: string | null;
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pollChoices?: string[] | null;
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others?: string[] | null;
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}): string {
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/**
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* ノートの内容を結合してキーワードチェック用の文字列を生成する
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* cwとtextは内容が繋がっているかもしれないので間に何も入れずにチェックする
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*/
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return `${content.cw ?? ''}${content.text ?? ''}\n${(content.pollChoices ?? []).join('\n')}\n${(content.others ?? []).join('\n')}`;
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}
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private static readonly isFilterRegExpPattern = /^\/(.+)\/(.*)$/;
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@bindThis
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public isKeyWordIncluded(text: string, keyWords: string[]): boolean {
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if (keyWords.length === 0) return false;
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if (text === '') return false;
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return keyWords.some(filter => {
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const regexp = UtilityService.isFilterRegExpPattern.exec(filter);
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if (!regexp) {
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const words = filter.split(' ');
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return words.every(keyword => text.includes(keyword));
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}
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try {
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// TODO: RE2インスタンスをキャッシュ
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return new RE2(regexp[1], regexp[2]).test(text);
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} catch (err) {
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// This should never happen due to input sanitization.
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return false;
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}
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});
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}
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@bindThis
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public normalizeHost(host: string): string {
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return punycode.toASCII(host.toLowerCase());
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}
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@bindThis
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public extractHost(uri: string): string {
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// ASCII String で返されるので punycode 化はいらない
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// ref: https://url.spec.whatwg.org/#host-serializing
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return new URL(uri).host;
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}
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}
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