import { Inject, Injectable } from '@nestjs/common';
import { Brackets } from 'typeorm';
import { Endpoint } from '@/server/api/endpoint-base.js';
import { QueryService } from '@/core/QueryService.js';
import type { ChannelsRepository } from '@/models/index.js';
import { ChannelEntityService } from '@/core/entities/ChannelEntityService.js';
import { DI } from '@/di-symbols.js';
import { sqlLikeEscape } from '@/misc/sql-like-escape.js';

// eslint-disable-next-line import/no-default-export
@Injectable()
export default class extends Endpoint<'channels/search'> {
	name = 'channels/search' as const;
	constructor(
		@Inject(DI.channelsRepository)
		private channelsRepository: ChannelsRepository,

		private channelEntityService: ChannelEntityService,
		private queryService: QueryService,
	) {
		super(async (ps, me) => {
			const query = this.queryService.makePaginationQuery(this.channelsRepository.createQueryBuilder('channel'), ps.sinceId, ps.untilId)
				.andWhere('channel.isArchived = FALSE');

			if (ps.query !== '') {
				if (ps.type === 'nameAndDescription') {
					query.andWhere(new Brackets(qb => { qb
						.where('channel.name ILIKE :q', { q: `%${ sqlLikeEscape(ps.query) }%` })
						.orWhere('channel.description ILIKE :q', { q: `%${ sqlLikeEscape(ps.query) }%` });
					}));
				} else {
					query.andWhere('channel.name ILIKE :q', { q: `%${ sqlLikeEscape(ps.query) }%` });
				}
			}

			const channels = await query
				.take(ps.limit)
				.getMany();

			return await Promise.all(channels.map(x => this.channelEntityService.pack(x, me)));
		});
	}
}