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import { Inject, Injectable } from '@nestjs/common';
import type { NotesRepository, UsersRepository } from '@/models/index.js';
import { isUserRelated } from '@/misc/is-user-related.js';
import type { User } from '@/models/entities/User.js';
import type { Packed } from '@/misc/schema.js';
import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
import { UserEntityService } from '@/core/entities/UserEntityService.js';
import Channel from '../channel.js';
import type { StreamMessages } from '../types.js';
class ChannelChannel extends Channel {
public readonly chName = 'channel';
public static shouldShare = false;
public static requireCredential = false;
private channelId: string;
private typers: Record<User['id'], Date> = {};
private emitTypersIntervalId: ReturnType<typeof setInterval>;
constructor(
private noteEntityService: NoteEntityService,
private userEntityService: UserEntityService,
id: string,
connection: Channel['connection'],
) {
super(id, connection);
this.onNote = this.onNote.bind(this);
this.emitTypers = this.emitTypers.bind(this);
}
public async init(params: any) {
this.channelId = params.channelId as string;
// Subscribe stream
this.subscriber.on('notesStream', this.onNote);
this.subscriber.on(`channelStream:${this.channelId}`, this.onEvent);
this.emitTypersIntervalId = setInterval(this.emitTypers, 5000);
}
private async onNote(note: Packed<'Note'>) {
if (note.channelId !== this.channelId) return;
// リプライなら再pack
if (note.replyId != null) {
note.reply = await this.noteEntityService.pack(note.replyId, this.user, {
detail: true,
});
}
// Renoteなら再pack
if (note.renoteId != null) {
note.renote = await this.noteEntityService.pack(note.renoteId, this.user, {
detail: true,
});
}
// 流れてきたNoteがミュートしているユーザーが関わるものだったら無視する
if (isUserRelated(note, this.muting)) return;
// 流れてきたNoteがブロックされているユーザーが関わるものだったら無視する
if (isUserRelated(note, this.blocking)) return;
this.connection.cacheNote(note);
this.send('note', note);
}
private onEvent(data: StreamMessages['channel']['payload']) {
if (data.type === 'typing') {
const id = data.body;
const begin = this.typers[id] == null;
this.typers[id] = new Date();
if (begin) {
this.emitTypers();
}
}
}
private async emitTypers() {
const now = new Date();
// Remove not typing users
for (const [userId, date] of Object.entries(this.typers)) {
if (now.getTime() - date.getTime() > 5000) delete this.typers[userId];
}
const users = await this.userEntityService.packMany(Object.keys(this.typers), null, { detail: false });
this.send({
type: 'typers',
body: users,
});
}
public dispose() {
// Unsubscribe events
this.subscriber.off('notesStream', this.onNote);
this.subscriber.off(`channelStream:${this.channelId}`, this.onEvent);
clearInterval(this.emitTypersIntervalId);
}
}
@Injectable()
export class ChannelChannelService {
public readonly shouldShare = ChannelChannel.shouldShare;
public readonly requireCredential = ChannelChannel.requireCredential;
constructor(
private noteEntityService: NoteEntityService,
private userEntityService: UserEntityService,
) {
}
public create(id: string, connection: Channel['connection']): ChannelChannel {
return new ChannelChannel(
this.noteEntityService,
this.userEntityService,
id,
connection,
);
}
}
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