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path: root/packages/backend/src/core/FlashService.ts
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/*
 * SPDX-FileCopyrightText: syuilo and misskey-project
 * SPDX-License-Identifier: AGPL-3.0-only
 */

import { Inject, Injectable } from '@nestjs/common';
import { Brackets } from 'typeorm';
import { DI } from '@/di-symbols.js';
import { type FlashLikesRepository, MiUser, type FlashsRepository } from '@/models/_.js';
import { QueryService } from '@/core/QueryService.js';
import { sqlLikeEscape } from '@/misc/sql-like-escape.js';

/**
 * MisskeyPlay関係のService
 */
@Injectable()
export class FlashService {
	constructor(
		@Inject(DI.flashsRepository)
		private flashRepository: FlashsRepository,

		@Inject(DI.flashLikesRepository)
		private flashLikesRepository: FlashLikesRepository,

		private queryService: QueryService,
	) {
	}

	/**
	 * 人気のあるPlay一覧を取得する.
	 */
	public async featured(opts?: { offset?: number, limit: number }) {
		const builder = this.flashRepository.createQueryBuilder('flash')
			.andWhere('flash.likedCount > 0')
			.andWhere('flash.visibility = :visibility', { visibility: 'public' })
			.addOrderBy('flash.likedCount', 'DESC')
			.addOrderBy('flash.updatedAt', 'DESC')
			.addOrderBy('flash.id', 'DESC');

		if (opts?.offset) {
			builder.skip(opts.offset);
		}

		builder.take(opts?.limit ?? 10);

		return await builder.getMany();
	}

	public async myLikes(meId: MiUser['id'], opts: { sinceId?: string, untilId?: string, sinceDate?: number, untilDate?: number, limit?: number, search?: string | null }) {
		const query = this.queryService.makePaginationQuery(this.flashLikesRepository.createQueryBuilder('like'), opts.sinceId, opts.untilId, opts.sinceDate, opts.untilDate)
			.andWhere('like.userId = :meId', { meId })
			.leftJoinAndSelect('like.flash', 'flash');

		if (opts.search != null) {
			for (const word of opts.search.trim().split(' ')) {
				query.andWhere(new Brackets(qb => {
					qb.orWhere('flash.title ILIKE :search', { search: `%${sqlLikeEscape(word)}%` });
					qb.orWhere('flash.summary ILIKE :search', { search: `%${sqlLikeEscape(word)}%` });
				}));
			}
		}

		const likes = await query
			.limit(opts.limit)
			.getMany();

		return likes;
	}

	public async search(searchQuery: string, opts: { sinceId?: string, untilId?: string, sinceDate?: number, untilDate?: number, limit?: number }) {
		const query = this.queryService.makePaginationQuery(this.flashRepository.createQueryBuilder('flash'), opts.sinceId, opts.untilId, opts.sinceDate, opts.untilDate)
			.andWhere('flash.visibility = \'public\'');

		for (const word of searchQuery.trim().split(' ')) {
			query.andWhere(new Brackets(qb => {
				qb.orWhere('flash.title ILIKE :search', { search: `%${sqlLikeEscape(word)}%` });
				qb.orWhere('flash.summary ILIKE :search', { search: `%${sqlLikeEscape(word)}%` });
			}));
		}

		const result = await query
			.limit(opts.limit)
			.getMany();

		return result;
	}
}