Update and retrieve display name

server/src/actions/getConnectedUsers.ts

@@ -1,6 +1,16 @@
 import { distanceBetween, geohashForLocation, geohashQueryBounds } from 'geofire-common'
 import { connectedUsersCollection } from '../utilities/firebaseInit'
 
+export const getConnectedUser = async (socketID: string) => {
+    try {
+        const user = await connectedUsersCollection.doc(socketID).get();
+        return user.data();
+    } catch (error) {
+        console.error("getConnectedUser failed:", error.message);
+        return false;
+    }
+}
+
 export const findNearbyUsers = async (centerLat: number, centerLon: number, radius: number) => {
 // Return an array of nearby userIds (which are also socket ids) given a center latitude and longitude.
 // Latitude and longitude values use degrees with the same bounds as GeoPoints. Radius values use meters.

server/src/actions/updateConnectedUser.ts

@@ -26,3 +26,13 @@ export const updateUserLocation = async (socketID: string, lat: number, lon: num
         return false
     }
 }
+
+export const updateUserDisplayName = async (socketID: string, displayName: string) => {
+    try {
+        await connectedUsersCollection.doc(socketID).update({ displayName: displayName })
+        return true
+    } catch (error) {
+        console.error(error.message)
+        return false
+    }
+}

server/src/index.ts

@@ -1,18 +1,15 @@
-import express from "express";
-import "dotenv/config";
-import "geofire-common";
-import { Message } from "./types/Message";
-import { createMessage } from "./actions/createMessage";
-import { createUser } from "./actions/createConnectedUser";
-import {
-  toggleUserConnectionStatus,
-  updateUserLocation,
-} from "./actions/updateConnectedUser";
-import { deleteConnectedUserByUID } from "./actions/deleteConnectedUser";
-import { geohashForLocation } from "geofire-common";
-import { findNearbyUsers } from "./actions/getConnectedUsers";
-import { ConnectedUser } from "./types/User";
-import { getAuth } from "firebase-admin/auth";
+import express from 'express';
+import 'dotenv/config';
+import 'geofire-common';
+import { Message } from './types/Message';
+import { createMessage } from './actions/createMessage';
+import { createUser } from './actions/createConnectedUser';
+import { toggleUserConnectionStatus, updateUserLocation, updateUserDisplayName } from './actions/updateConnectedUser';
+import { deleteConnectedUserByUID } from './actions/deleteConnectedUser';
+import { findNearbyUsers, getConnectedUser } from './actions/getConnectedUsers';
+import {geohashForLocation} from 'geofire-common';
+import { ConnectedUser } from './types/User';
+import { getAuth } from 'firebase-admin/auth';
 import Mailgun from "mailgun.js";
 
 const { createServer } = require("http");
@@ -143,9 +140,8 @@ io.on("connection", async (socket: any) => {
     } catch (error) {
       console.error("[WS] Error calling updateLocation:", error.message);
     }
-  });
-});
-
+  })
+})
 socketServer.listen(socket_port, () => {
   console.log(`[WS] Listening for new connections on port ${socket_port}.`);
 });
@@ -168,8 +164,20 @@ app.get("/users", async (req, res) => {
       const radius = Number(req.query.radius);
 
       const userIds = await findNearbyUsers(lat, lon, radius);
-      console.log(userIds);
       res.json(userIds);
+
+    } else if (req.query.userId) {
+      query = "?userId";
+      const userId = req.query.userId;
+      if (typeof userId != "string") throw Error("  [userId] is not a string.");
+
+      const user = await getConnectedUser(userId);
+      if (user) {
+        res.json(user);
+      } else {
+        // getConnectedUserDisplayName() will return false is an error is thrown, and print it to console. 
+        throw Error("getConnectedUser() failed.");
+      }
     }
   } catch (error) {
     console.error(
@@ -219,6 +227,7 @@ app.put("/users", async (req, res) => {
 
       const success = await toggleUserConnectionStatus(userId);
       if (!success) throw Error("     toggleUserConnectionStatus() failed.");
+
     } else if (req.query.userId && req.query.lat && req.query.lon) {
       query = "?userId&lat&lon";
       const userId = req.query.userId;
@@ -230,9 +239,20 @@ app.put("/users", async (req, res) => {
 
       const success = await updateUserLocation(userId, lat, lon);
       if (!success) throw Error("     toggleUserConnectionStatus() failed.");
+
+    } else if (req.query.userId && req.query.displayName) {
+      query = "?userId&displayName";
+      const userId = req.query.userId;
+      if (typeof userId != "string") throw Error("  [userId] is not a string.");
+      const displayName = req.query.displayName;
+      if (typeof displayName != "string") throw Error("  [displayName] is not a string.");
+
+      const success = await updateUserDisplayName(userId, displayName);
+      if (!success) throw Error("updateDisplayName() failed.");
     }
     console.log(`[EXP] Request <PUT /users${query}> returned successfully.`);
-    res.json(`Operation <PUT /user${query}> was handled successfully.`);
+    res.json(`Operation <PUT /users${query}> was handled successfully.`);
+
   } catch (error) {
     console.error(
       `[EXP] Error returning request <PUT /users${query}>:\n`,