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/*
* SPDX-FileCopyrightText: syuilo and misskey-project
* SPDX-License-Identifier: AGPL-3.0-only
*/
import { URL } from 'node:url';
import { toASCII } from 'punycode';
import { Inject, Injectable } from '@nestjs/common';
import RE2 from 're2';
import { DI } from '@/di-symbols.js';
import type { Config } from '@/config.js';
import { bindThis } from '@/decorators.js';
@Injectable()
export class UtilityService {
constructor(
@Inject(DI.config)
private config: Config,
) {
}
@bindThis
public getFullApAccount(username: string, host: string | null): string {
return host ? `${username}@${this.toPuny(host)}` : `${username}@${this.toPuny(this.config.host)}`;
}
@bindThis
public isSelfHost(host: string | null): boolean {
if (host == null) return true;
return this.toPuny(this.config.host) === this.toPuny(host);
}
@bindThis
public isBlockedHost(blockedHosts: string[], host: string | null): boolean {
if (host == null) return false;
return blockedHosts.some(x => `.${host.toLowerCase()}`.endsWith(`.${x}`));
}
@bindThis
public isSilencedHost(silencedHosts: string[] | undefined, host: string | null): boolean {
if (!silencedHosts || host == null) return false;
return silencedHosts.some(x => `.${host.toLowerCase()}`.endsWith(`.${x}`));
}
@bindThis
public isKeyWordIncluded(text: string, keyWords: string[]): boolean {
if (keyWords.length === 0) return false;
if (text === '') return false;
const regexpregexp = /^\/(.+)\/(.*)$/;
const matched = keyWords.some(filter => {
// represents RegExp
const regexp = filter.match(regexpregexp);
// This should never happen due to input sanitisation.
if (!regexp) {
const words = filter.split(' ');
return words.every(keyword => text.includes(keyword));
}
try {
// TODO: RE2インスタンスをキャッシュ
return new RE2(regexp[1], regexp[2]).test(text);
} catch (err) {
// This should never happen due to input sanitisation.
return false;
}
});
return matched;
}
@bindThis
public extractDbHost(uri: string): string {
const url = new URL(uri);
return this.toPuny(url.hostname);
}
@bindThis
public toPuny(host: string): string {
return toASCII(host.toLowerCase());
}
@bindThis
public toPunyNullable(host: string | null | undefined): string | null {
if (host == null) return null;
return toASCII(host.toLowerCase());
}
}
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