feat: express decorators for rest apis and websocket (#6818)

* feat: express decorators for rest apis and websocket

* fix: added package dependency

* fix: refactor decorators

packages/decorators/src/controller.ts

@@ -0,0 +1,61 @@
+import { RequestHandler, Router } from "express";
+import "reflect-metadata";
+
+type HttpMethod =
+  | "get"
+  | "post"
+  | "put"
+  | "delete"
+  | "patch"
+  | "options"
+  | "head"
+  | "ws";
+
+interface ControllerInstance {
+  [key: string]: unknown;
+}
+
+interface ControllerConstructor {
+  new (...args: any[]): ControllerInstance;
+  prototype: ControllerInstance;
+}
+
+export function registerControllers(
+  router: Router,
+  Controller: ControllerConstructor,
+): void {
+  const instance = new Controller();
+  const baseRoute = Reflect.getMetadata("baseRoute", Controller) as string;
+
+  Object.getOwnPropertyNames(Controller.prototype).forEach((methodName) => {
+    if (methodName === "constructor") return; // Skip the constructor
+
+    const method = Reflect.getMetadata(
+      "method",
+      instance,
+      methodName,
+    ) as HttpMethod;
+    const route = Reflect.getMetadata("route", instance, methodName) as string;
+    const middlewares =
+      (Reflect.getMetadata(
+        "middlewares",
+        instance,
+        methodName,
+      ) as RequestHandler[]) || [];
+
+    if (method && route) {
+      const handler = instance[methodName] as unknown;
+
+      if (typeof handler === "function") {
+        if (method !== "ws") {
+          (
+            router[method] as (
+              path: string,
+              ...handlers: RequestHandler[]
+            ) => void
+          )(`${baseRoute}${route}`, ...middlewares, handler.bind(instance));
+        }
+      }
+    }
+  });
+}