chore: added check session + code refactor

api/src/controllers/session.ts

@@ -0,0 +1,30 @@
+import express from 'express'
+import { Request, Security, Route, Tags, Example, Get } from 'tsoa'
+import { UserResponse } from './user'
+
+@Security('bearerAuth')
+@Route('SASjsApi/session')
+@Tags('Session')
+export class SessionController {
+  /**
+   * @summary Get session info (username).
+   *
+   */
+  @Example<UserResponse>({
+    id: 123,
+    username: 'johnusername',
+    displayName: 'John'
+  })
+  @Get('/')
+  public async session(
+    @Request() request: express.Request
+  ): Promise<UserResponse> {
+    return session(request)
+  }
+}
+
+const session = (req: any) => ({
+  id: req.user.id,
+  username: req.user.username,
+  displayName: req.user.displayName
+})