use camelcase file names from now on...

src/managers/userManager.ts

@@ -0,0 +1,38 @@
+import { User } from '@prisma/client'
+import logger from '../utilities/logger'
+
+type TLoggedInUsers = {
+  users: User[]
+}
+
+class UserManager {
+  private loggedInUsers: TLoggedInUsers[] = []
+
+  // Method to initialize user manager
+  public async boot() {
+    logger.info('User manager loaded')
+  }
+
+  // Function that adds user to logged in users
+  public loginUser(user: User) {
+    this.loggedInUsers.push({
+      users: [user]
+    })
+  }
+
+  // Function that checks if a user is already logged in
+  public findUser(user: User) {
+    return this.loggedInUsers.find((loggedInUser) => {
+      return loggedInUser.users.includes(user)
+    })
+  }
+
+  // Function that lists all logged in users
+  public listUsers() {
+    return this.loggedInUsers.map((loggedInUser) => {
+      return loggedInUser.users
+    })
+  }
+}
+
+export default new UserManager()