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import { Inject, Injectable } from '@nestjs/common';
import { DI } from '@/di-symbols.js';
import type { NotesRepository, UsersRepository, PollsRepository, PollVotesRepository, User } from '@/models/index.js';
import type { Note } from '@/models/entities/Note.js';
import { RelayService } from '@/core/RelayService.js';
import { IdService } from '@/core/IdService.js';
import { GlobalEventService } from '@/core/GlobalEventService.js';
import { ApRendererService } from '@/core/activitypub/ApRendererService.js';
import { UserEntityService } from '@/core/entities/UserEntityService.js';
import { ApDeliverManagerService } from '@/core/activitypub/ApDeliverManagerService.js';
import { bindThis } from '@/decorators.js';
import { UserBlockingService } from '@/core/UserBlockingService.js';
@Injectable()
export class PollService {
constructor(
@Inject(DI.usersRepository)
private usersRepository: UsersRepository,
@Inject(DI.notesRepository)
private notesRepository: NotesRepository,
@Inject(DI.pollsRepository)
private pollsRepository: PollsRepository,
@Inject(DI.pollVotesRepository)
private pollVotesRepository: PollVotesRepository,
private userEntityService: UserEntityService,
private idService: IdService,
private relayService: RelayService,
private globalEventService: GlobalEventService,
private userBlockingService: UserBlockingService,
private apRendererService: ApRendererService,
private apDeliverManagerService: ApDeliverManagerService,
) {
}
@bindThis
public async vote(user: User, note: Note, choice: number) {
const poll = await this.pollsRepository.findOneBy({ noteId: note.id });
if (poll == null) throw new Error('poll not found');
// Check whether is valid choice
if (poll.choices[choice] == null) throw new Error('invalid choice param');
// Check blocking
if (note.userId !== user.id) {
const blocked = await this.userBlockingService.checkBlocked(note.userId, user.id);
if (blocked) {
throw new Error('blocked');
}
}
// if already voted
const exist = await this.pollVotesRepository.findBy({
noteId: note.id,
userId: user.id,
});
if (poll.multiple) {
if (exist.some(x => x.choice === choice)) {
throw new Error('already voted');
}
} else if (exist.length !== 0) {
throw new Error('already voted');
}
// Create vote
await this.pollVotesRepository.insert({
id: this.idService.genId(),
createdAt: new Date(),
noteId: note.id,
userId: user.id,
choice: choice,
});
// Increment votes count
const index = choice + 1; // In SQL, array index is 1 based
await this.pollsRepository.query(`UPDATE poll SET votes[${index}] = votes[${index}] + 1 WHERE "noteId" = '${poll.noteId}'`);
this.globalEventService.publishNoteStream(note.id, 'pollVoted', {
choice: choice,
userId: user.id,
});
}
@bindThis
public async deliverQuestionUpdate(noteId: Note['id']) {
const note = await this.notesRepository.findOneBy({ id: noteId });
if (note == null) throw new Error('note not found');
const user = await this.usersRepository.findOneBy({ id: note.userId });
if (user == null) throw new Error('note not found');
if (this.userEntityService.isLocalUser(user)) {
const content = this.apRendererService.addContext(this.apRendererService.renderUpdate(await this.apRendererService.renderNote(note, false), user));
this.apDeliverManagerService.deliverToFollowers(user, content);
this.relayService.deliverToRelays(user, content);
}
}
}
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