feat: add defer function

Signed-off-by: MiaoWoo <admin@yumc.pw>

packages/core/src/function/websocket.ts

@@ -1,6 +1,6 @@
 import { lazyInjectNamed } from '@cc-server/ioc'
 import { controller, httpPost, requestBody } from '@cc-server/binding';
-import { namespace, listener, interfaces, io, TYPE } from '@cc-server/ws'
+import { namespace, listener, interfaces, BroadcastMessage, io, TYPE } from '@cc-server/ws'
 
 @namespace('/', (socket: io.Socket, next: (err?: any) => void) => {
     console.log(socket.nsp.name, socket.id, 'before connection');
@@ -11,6 +11,7 @@ export class Namespace extends interfaces.Namespace {
 
     public async connection(socket: io.Socket) {
         console.log(this.nsp.name, socket.id, 'connection');
+        this.defer(socket => console.log(this.nsp.name, socket.id, 'defer', this))
         return `Welcome to Websocket Chat Room Now: ${Date.now()} Your ID: ${socket.id}! \n`;
     }
 
@@ -26,7 +27,7 @@ export class Namespace extends interfaces.Namespace {
         console.log(this.nsp.name, socket.id, 'message', data)
         this.cache[socket.id] = (this.cache[socket.id] || '') + data;
         if (data == '\r' && this.cache[socket.id] !== "") {
-            let result = this.broadcast(this.cache[socket.id] + '\n')
+            let result = new BroadcastMessage(this.cache[socket.id] + '\n')
             this.cache[socket.id] = '';
             return result;
         }

packages/ws/src/builder.ts

@@ -2,7 +2,7 @@ import "reflect-metadata";
 import * as io from 'socket.io'
 import { Container } from 'inversify'
 import { TYPE } from './constants'
-import { interfaces, BroadcastMessage } from './interfaces'
+import { interfaces, Message, BroadcastMessage } from './interfaces'
 import { getNamespaces, getNamespaceMetadata, getNamespaceListenerMetadata } from './utils'
 
 export function buildWebSocket(container: Container, server: io.Server) {
@@ -66,9 +66,12 @@ async function applyEvent(namespaceInstance: interfaces.Namespace, socket: io.So
             socket.send(result);
         }
     }
+    socket.on('disconnect', async () => {
+        await namespaceInstance.defers.forEach(defer => defer(socket));
         if (namespaceInstance.disconnect) {
-        socket.on('disconnect', async () => await namespaceInstance.disconnect(socket));
+            await namespaceInstance.disconnect(socket);
         }
+    });
 }
 
 function applyListeners(namespaceEventMetadata: interfaces.ListenerMetadata[], socket: io.Socket, namespaceInstance: interfaces.Namespace) {
@@ -76,10 +79,13 @@ function applyListeners(namespaceEventMetadata: interfaces.ListenerMetadata[], s
         socket.on(event.name, async data => {
             let result = await namespaceInstance[event.key](socket, data);
             if (result != undefined) {
+                if (result instanceof Message) {
                     if (result instanceof BroadcastMessage) {
-                    socket.broadcast.emit(event.name, result.message);
+                        socket.broadcast.emit(result.event || event.name, result.message);
+                    } else {
+                        socket.emit(result.event || event.name, result.message);
                     }
-                else {
+                } else {
                     socket.emit(event.name, result);
                 }
             }

packages/ws/src/interfaces.ts

@@ -2,10 +2,9 @@ import * as io from 'socket.io'
 import { injectable } from 'inversify';
 
 export class Message {
-    constructor(public message: any) { }
+    constructor(public message: any, public event?: string) { }
 }
-export class BroadcastMessage {
+export class BroadcastMessage extends Message {
-    constructor(public message: any) { }
 }
 
 export namespace interfaces {
@@ -15,6 +14,10 @@ export namespace interfaces {
         * @see io.Namespace
         */
         public nsp?: io.Namespace;
+        /**
+         * Defer Functions Array
+         */
+        public defers?: ((socket: io.Socket) => void)[] = [];
         /**
          * The event fired when we get a new connection
          * @param socket socket
@@ -27,22 +30,28 @@ export namespace interfaces {
          */
         public disconnect?(socket: io.Socket): void;
         /**
-         * broadcast message on this namespace
+         * add disconnect defer function
          */
-        public broadcast(message: any): BroadcastMessage {
+        protected defer?(fn: (socket: io.Socket) => void) {
-            return new BroadcastMessage(message);
+            this.defers.push(fn);
         }
         /**
          * Event Listener
          * @param data event data
          * @return return data will send use socket.emit(key, data)
          */
-        [key: string]: ((data: any, socket: io.Socket) => any) | any;
+        [key: string]: ((socket: io.Socket, data: any) => any) | any;
     }
 
+    /**
+     * Namespace Middleware
+     */
     export interface Middleware {
         (socket: io.Socket, next: (err?: any) => void): void;
     }
+    /**
+     * Listener Middleware
+     */
     export interface ListenerMiddleware {
         (socket: io.Socket, packet: io.Packet, next: (err?: any) => void): void;
     }