Jason Rasmussen
103 lines
3.2 KiB
TypeScript
103 lines
3.2 KiB
TypeScript
import { Inject, Injectable } from '@nestjs/common';
|
|
import { EventEmitter2 } from '@nestjs/event-emitter';
|
|
import {
|
|
OnGatewayConnection,
|
|
OnGatewayDisconnect,
|
|
OnGatewayInit,
|
|
WebSocketGateway,
|
|
WebSocketServer,
|
|
} from '@nestjs/websockets';
|
|
import { Server, Socket } from 'socket.io';
|
|
import {
|
|
ClientEventMap,
|
|
EmitEvent,
|
|
EmitEventHandler,
|
|
IEventRepository,
|
|
ServerEvent,
|
|
ServerEventMap,
|
|
} from 'src/interfaces/event.interface';
|
|
import { ILoggerRepository } from 'src/interfaces/logger.interface';
|
|
import { AuthService } from 'src/services/auth.service';
|
|
import { Instrumentation } from 'src/utils/instrumentation';
|
|
|
|
@Instrumentation()
|
|
@WebSocketGateway({
|
|
cors: true,
|
|
path: '/api/socket.io',
|
|
transports: ['websocket'],
|
|
})
|
|
@Injectable()
|
|
export class EventRepository implements OnGatewayConnection, OnGatewayDisconnect, OnGatewayInit, IEventRepository {
|
|
private emitHandlers: Partial<Record<EmitEvent, EmitEventHandler<EmitEvent>[]>> = {};
|
|
|
|
@WebSocketServer()
|
|
private server?: Server;
|
|
|
|
constructor(
|
|
private authService: AuthService,
|
|
private eventEmitter: EventEmitter2,
|
|
@Inject(ILoggerRepository) private logger: ILoggerRepository,
|
|
) {
|
|
this.logger.setContext(EventRepository.name);
|
|
}
|
|
|
|
afterInit(server: Server) {
|
|
this.logger.log('Initialized websocket server');
|
|
|
|
for (const event of Object.values(ServerEvent)) {
|
|
if (event === ServerEvent.WEBSOCKET_CONNECT) {
|
|
continue;
|
|
}
|
|
|
|
server.on(event, (data: unknown) => {
|
|
this.logger.debug(`Server event: ${event} (receive)`);
|
|
this.eventEmitter.emit(event, data);
|
|
});
|
|
}
|
|
}
|
|
|
|
async handleConnection(client: Socket) {
|
|
try {
|
|
this.logger.log(`Websocket Connect: ${client.id}`);
|
|
const auth = await this.authService.validate(client.request.headers, {});
|
|
await client.join(auth.user.id);
|
|
this.serverSend(ServerEvent.WEBSOCKET_CONNECT, { userId: auth.user.id });
|
|
} catch (error: Error | any) {
|
|
this.logger.error(`Websocket connection error: ${error}`, error?.stack);
|
|
client.emit('error', 'unauthorized');
|
|
client.disconnect();
|
|
}
|
|
}
|
|
|
|
async handleDisconnect(client: Socket) {
|
|
this.logger.log(`Websocket Disconnect: ${client.id}`);
|
|
await client.leave(client.nsp.name);
|
|
}
|
|
|
|
on<T extends EmitEvent>(event: T, handler: EmitEventHandler<T>): void {
|
|
const handlers: EmitEventHandler<EmitEvent>[] = this.emitHandlers[event] || [];
|
|
this.emitHandlers[event] = [...handlers, handler];
|
|
}
|
|
|
|
async emit<T extends EmitEvent>(event: T, ...args: Parameters<EmitEventHandler<T>>): Promise<void> {
|
|
const handlers = this.emitHandlers[event] || [];
|
|
for (const handler of handlers) {
|
|
await handler(...args);
|
|
}
|
|
}
|
|
|
|
clientSend<E extends keyof ClientEventMap>(event: E, userId: string, data: ClientEventMap[E]) {
|
|
this.server?.to(userId).emit(event, data);
|
|
}
|
|
|
|
clientBroadcast<E extends keyof ClientEventMap>(event: E, data: ClientEventMap[E]) {
|
|
this.server?.emit(event, data);
|
|
}
|
|
|
|
serverSend<E extends keyof ServerEventMap>(event: E, data: ServerEventMap[E]) {
|
|
this.logger.debug(`Server event: ${event} (send)`);
|
|
this.server?.serverSideEmit(event, data);
|
|
return this.eventEmitter.emit(event, data);
|
|
}
|
|
}
|