import { Inject, Injectable } from '@nestjs/common';
import { Endpoint } from '@/server/api/endpoint-base.js';
import type { FollowingsRepository } from '@/models/index.js';
import { QueryService } from '@/core/QueryService.js';
import { FollowingEntityService } from '@/core/entities/FollowingEntityService.js';
import { DI } from '@/di-symbols.js';

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

		private followingEntityService: FollowingEntityService,
		private queryService: QueryService,
	) {
		super(async (ps, me) => {
			const query = this.queryService.makePaginationQuery(this.followingsRepository.createQueryBuilder('following'), ps.sinceId, ps.untilId)
				.andWhere('following.followeeHost = :host', { host: ps.host });

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

			return await this.followingEntityService.packMany(followings, me, { populateFollowee: true });
		});
	}
}