forked from mirrors/misskey
241 lines
7.2 KiB
TypeScript
241 lines
7.2 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 { Inject, Injectable } from '@nestjs/common';
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import { In } from 'typeorm';
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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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import { MiNote } from '@/models/Note.js';
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import { MiUser } from '@/models/_.js';
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import type { NotesRepository } from '@/models/_.js';
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import { sqlLikeEscape } from '@/misc/sql-like-escape.js';
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import { isUserRelated } from '@/misc/is-user-related.js';
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import { CacheService } from '@/core/CacheService.js';
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import { QueryService } from '@/core/QueryService.js';
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import { IdService } from '@/core/IdService.js';
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import type { Index, MeiliSearch } from 'meilisearch';
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type K = string;
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type V = string | number | boolean;
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type Q =
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{ op: '=', k: K, v: V } |
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{ op: '!=', k: K, v: V } |
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{ op: '>', k: K, v: number } |
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{ op: '<', k: K, v: number } |
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{ op: '>=', k: K, v: number } |
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{ op: '<=', k: K, v: number } |
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{ op: 'is null', k: K} |
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{ op: 'is not null', k: K} |
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{ op: 'and', qs: Q[] } |
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{ op: 'or', qs: Q[] } |
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{ op: 'not', q: Q };
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function compileValue(value: V): string {
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if (typeof value === 'string') {
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return `'${value}'`; // TODO: escape
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} else if (typeof value === 'number') {
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return value.toString();
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} else if (typeof value === 'boolean') {
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return value.toString();
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}
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throw new Error('unrecognized value');
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}
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function compileQuery(q: Q): string {
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switch (q.op) {
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case '=': return `(${q.k} = ${compileValue(q.v)})`;
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case '!=': return `(${q.k} != ${compileValue(q.v)})`;
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case '>': return `(${q.k} > ${compileValue(q.v)})`;
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case '<': return `(${q.k} < ${compileValue(q.v)})`;
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case '>=': return `(${q.k} >= ${compileValue(q.v)})`;
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case '<=': return `(${q.k} <= ${compileValue(q.v)})`;
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case 'and': return q.qs.length === 0 ? '' : `(${ q.qs.map(_q => compileQuery(_q)).join(' AND ') })`;
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case 'or': return q.qs.length === 0 ? '' : `(${ q.qs.map(_q => compileQuery(_q)).join(' OR ') })`;
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case 'is null': return `(${q.k} IS NULL)`;
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case 'is not null': return `(${q.k} IS NOT NULL)`;
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case 'not': return `(NOT ${compileQuery(q.q)})`;
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default: throw new Error('unrecognized query operator');
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}
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}
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@Injectable()
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export class SearchService {
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private readonly meilisearchIndexScope: 'local' | 'global' | string[] = 'local';
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private meilisearchNoteIndex: Index | null = null;
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constructor(
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@Inject(DI.config)
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private config: Config,
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@Inject(DI.meilisearch)
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private meilisearch: MeiliSearch | null,
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@Inject(DI.notesRepository)
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private notesRepository: NotesRepository,
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private cacheService: CacheService,
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private queryService: QueryService,
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private idService: IdService,
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) {
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if (meilisearch) {
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this.meilisearchNoteIndex = meilisearch.index(`${config.meilisearch!.index}---notes`);
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this.meilisearchNoteIndex.updateSettings({
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searchableAttributes: [
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'text',
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'cw',
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],
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sortableAttributes: [
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'createdAt',
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],
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filterableAttributes: [
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'createdAt',
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'userId',
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'userHost',
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'channelId',
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'tags',
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],
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typoTolerance: {
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enabled: false,
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},
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pagination: {
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maxTotalHits: 10000,
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},
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});
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}
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if (config.meilisearch?.scope) {
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this.meilisearchIndexScope = config.meilisearch.scope;
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}
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}
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@bindThis
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public async indexNote(note: MiNote): Promise<void> {
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if (note.text == null && note.cw == null) return;
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if (!['home', 'public'].includes(note.visibility)) return;
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if (this.meilisearch) {
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switch (this.meilisearchIndexScope) {
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case 'global':
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break;
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case 'local':
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if (note.userHost == null) break;
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return;
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default: {
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if (note.userHost == null) break;
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if (this.meilisearchIndexScope.includes(note.userHost)) break;
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return;
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}
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}
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await this.meilisearchNoteIndex?.addDocuments([{
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id: note.id,
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createdAt: this.idService.parse(note.id).date.getTime(),
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userId: note.userId,
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userHost: note.userHost,
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channelId: note.channelId,
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cw: note.cw,
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text: note.text,
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tags: note.tags,
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}], {
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primaryKey: 'id',
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});
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}
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}
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@bindThis
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public async unindexNote(note: MiNote): Promise<void> {
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if (!['home', 'public'].includes(note.visibility)) return;
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if (this.meilisearch) {
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this.meilisearchNoteIndex!.deleteDocument(note.id);
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}
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}
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@bindThis
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public async searchNote(q: string, me: MiUser | null, opts: {
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userId?: MiNote['userId'] | null;
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channelId?: MiNote['channelId'] | null;
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host?: string | null;
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}, pagination: {
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untilId?: MiNote['id'];
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sinceId?: MiNote['id'];
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limit?: number;
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}): Promise<MiNote[]> {
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if (this.meilisearch) {
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const filter: Q = {
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op: 'and',
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qs: [],
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};
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if (pagination.untilId) filter.qs.push({ op: '<', k: 'createdAt', v: this.idService.parse(pagination.untilId).date.getTime() });
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if (pagination.sinceId) filter.qs.push({ op: '>', k: 'createdAt', v: this.idService.parse(pagination.sinceId).date.getTime() });
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if (opts.userId) filter.qs.push({ op: '=', k: 'userId', v: opts.userId });
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if (opts.channelId) filter.qs.push({ op: '=', k: 'channelId', v: opts.channelId });
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if (opts.host) {
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if (opts.host === '.') {
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filter.qs.push({ op: 'is null', k: 'userHost' });
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} else {
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filter.qs.push({ op: '=', k: 'userHost', v: opts.host });
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}
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}
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const res = await this.meilisearchNoteIndex!.search(q, {
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sort: ['createdAt:desc'],
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matchingStrategy: 'all',
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attributesToRetrieve: ['id', 'createdAt'],
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filter: compileQuery(filter),
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limit: pagination.limit,
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});
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if (res.hits.length === 0) return [];
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const [
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userIdsWhoMeMuting,
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userIdsWhoBlockingMe,
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] = me ? await Promise.all([
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this.cacheService.userMutingsCache.fetch(me.id),
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this.cacheService.userBlockedCache.fetch(me.id),
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]) : [new Set<string>(), new Set<string>()];
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const notes = (await this.notesRepository.findBy({
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id: In(res.hits.map(x => x.id)),
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})).filter(note => {
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if (me && isUserRelated(note, userIdsWhoBlockingMe)) return false;
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if (me && isUserRelated(note, userIdsWhoMeMuting)) return false;
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return true;
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});
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return notes.sort((a, b) => a.id > b.id ? -1 : 1);
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} else {
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const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'), pagination.sinceId, pagination.untilId);
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if (opts.userId) {
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query.andWhere('note.userId = :userId', { userId: opts.userId });
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} else if (opts.channelId) {
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query.andWhere('note.channelId = :channelId', { channelId: opts.channelId });
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}
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query
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.andWhere('note.text ILIKE :q', { q: `%${ sqlLikeEscape(q) }%` })
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.innerJoinAndSelect('note.user', 'user')
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.leftJoinAndSelect('note.reply', 'reply')
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.leftJoinAndSelect('note.renote', 'renote')
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.leftJoinAndSelect('reply.user', 'replyUser')
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.leftJoinAndSelect('renote.user', 'renoteUser');
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if (opts.host) {
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if (opts.host === '.') {
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query.andWhere('user.host IS NULL');
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} else {
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query.andWhere('user.host = :host', { host: opts.host });
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}
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}
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this.queryService.generateVisibilityQuery(query, me);
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if (me) this.queryService.generateMutedUserQuery(query, me);
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if (me) this.queryService.generateBlockedUserQuery(query, me);
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return await query.limit(pagination.limit).getMany();
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}
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}
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}
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