refactor(server): plugin modules (#5630)

- [x] separates modules into `fundamental`, `core`, `plugins`
- [x] optional modules with `@OptionalModule` decorator to install modules with requirements met(`requires`, `if`)
- [x] `module.contributesTo` defines optional features that will be enabled if module registered
- [x] `AFFiNE.plugins.use('payment', {})` to enable a optional/plugin module
- [x] `PaymentModule` is the first plugin module
- [x] GraphQLSchema will not be generated for non-included modules
- [x] Frontend can use `ServerConfigType` query to detect which features are enabled
- [x] override existing provider globally

packages/backend/server/src/fundamentals/websocket/index.ts

@@ -1 +1,17 @@
-export { RedisIoAdapter } from './redis-adapter';
+import { Module, Provider } from '@nestjs/common';
+import { IoAdapter } from '@nestjs/platform-socket.io';
+
+export const SocketIoAdapterImpl = Symbol('SocketIoAdapterImpl');
+
+export class SocketIoAdapter extends IoAdapter {}
+
+const SocketIoAdapterImplProvider: Provider = {
+  provide: SocketIoAdapterImpl,
+  useValue: SocketIoAdapter,
+};
+
+@Module({
+  providers: [SocketIoAdapterImplProvider],
+  exports: [SocketIoAdapterImplProvider],
+})
+export class WebSocketModule {}

packages/backend/server/src/fundamentals/websocket/redis-adapter.ts

@@ -1,27 +0,0 @@
-import { IoAdapter } from '@nestjs/platform-socket.io';
-import { createAdapter } from '@socket.io/redis-adapter';
-import { Redis } from 'ioredis';
-import { ServerOptions } from 'socket.io';
-
-export class RedisIoAdapter extends IoAdapter {
-  private adapterConstructor: ReturnType<typeof createAdapter> | undefined;
-
-  async connectToRedis(redis: Redis): Promise<void> {
-    const pubClient = redis;
-    pubClient.on('error', err => {
-      console.error(err);
-    });
-    const subClient = pubClient.duplicate();
-    subClient.on('error', err => {
-      console.error(err);
-    });
-
-    this.adapterConstructor = createAdapter(pubClient, subClient);
-  }
-
-  override createIOServer(port: number, options?: ServerOptions): any {
-    const server = super.createIOServer(port, options);
-    server.adapter(this.adapterConstructor);
-    return server;
-  }
-}