Sharkey/packages/backend/src/core/GlobalEventService.ts

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import { Inject, Injectable } from '@nestjs/common';
import Redis from 'ioredis';
import type { User } from '@/models/entities/User.js';
import type { Note } from '@/models/entities/Note.js';
import type { UserList } from '@/models/entities/UserList.js';
import type { Antenna } from '@/models/entities/Antenna.js';
import type {
StreamChannels,
AdminStreamTypes,
AntennaStreamTypes,
BroadcastTypes,
DriveStreamTypes,
InternalStreamTypes,
MainStreamTypes,
NoteStreamTypes,
UserListStreamTypes,
} from '@/server/api/stream/types.js';
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import type { Packed } from '@/misc/json-schema.js';
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import { DI } from '@/di-symbols.js';
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import type { Config } from '@/config.js';
import { bindThis } from '@/decorators.js';
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@Injectable()
export class GlobalEventService {
constructor(
@Inject(DI.config)
private config: Config,
@Inject(DI.redis)
private redisClient: Redis.Redis,
) {
}
@bindThis
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private publish(channel: StreamChannels, type: string | null, value?: any): void {
const message = type == null ? value : value == null ?
{ type: type, body: null } :
{ type: type, body: value };
this.redisClient.publish(this.config.host, JSON.stringify({
channel: channel,
message: message,
}));
}
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@bindThis
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public publishInternalEvent<K extends keyof InternalStreamTypes>(type: K, value?: InternalStreamTypes[K]): void {
this.publish('internal', type, typeof value === 'undefined' ? null : value);
}
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@bindThis
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public publishBroadcastStream<K extends keyof BroadcastTypes>(type: K, value?: BroadcastTypes[K]): void {
this.publish('broadcast', type, typeof value === 'undefined' ? null : value);
}
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@bindThis
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public publishMainStream<K extends keyof MainStreamTypes>(userId: User['id'], type: K, value?: MainStreamTypes[K]): void {
this.publish(`mainStream:${userId}`, type, typeof value === 'undefined' ? null : value);
}
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@bindThis
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public publishDriveStream<K extends keyof DriveStreamTypes>(userId: User['id'], type: K, value?: DriveStreamTypes[K]): void {
this.publish(`driveStream:${userId}`, type, typeof value === 'undefined' ? null : value);
}
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@bindThis
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public publishNoteStream<K extends keyof NoteStreamTypes>(noteId: Note['id'], type: K, value?: NoteStreamTypes[K]): void {
this.publish(`noteStream:${noteId}`, type, {
id: noteId,
body: value,
});
}
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@bindThis
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public publishUserListStream<K extends keyof UserListStreamTypes>(listId: UserList['id'], type: K, value?: UserListStreamTypes[K]): void {
this.publish(`userListStream:${listId}`, type, typeof value === 'undefined' ? null : value);
}
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@bindThis
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public publishAntennaStream<K extends keyof AntennaStreamTypes>(antennaId: Antenna['id'], type: K, value?: AntennaStreamTypes[K]): void {
this.publish(`antennaStream:${antennaId}`, type, typeof value === 'undefined' ? null : value);
}
@bindThis
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public publishNotesStream(note: Packed<'Note'>): void {
this.publish('notesStream', null, note);
}
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@bindThis
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public publishAdminStream<K extends keyof AdminStreamTypes>(userId: User['id'], type: K, value?: AdminStreamTypes[K]): void {
this.publish(`adminStream:${userId}`, type, typeof value === 'undefined' ? null : value);
}
}