Main into Mobile

shatter-backend/package.json

@@ -13,6 +13,7 @@
   "license": "ISC",
   "description": "",
   "dependencies": {
+    "axios": "^1.13.5",
     "bcryptjs": "^3.0.3",
     "cors": "^2.8.5",
     "dotenv": "^17.2.3",

shatter-backend/src/controllers/auth_controller.ts

@@ -1,7 +1,13 @@
+import crypto from 'crypto';
+import jwt from 'jsonwebtoken';
 import { Request, Response } from 'express';
 import { User } from '../models/user_model';
+import { AuthCode } from '../models/auth_code_model';
 import { hashPassword, comparePassword } from '../utils/password_hash';
 import { generateToken } from '../utils/jwt_utils';
+import { getLinkedInAuthUrl, getLinkedInAccessToken, getLinkedInProfile } from '../utils/linkedin_oauth';
+
+const JWT_SECRET = process.env.JWT_SECRET || '';
 
 // Email validation regex
 const EMAIL_REGEX = /^[^\s@]+@[^\s@]+\.[^\s@]{2,}$/;
@@ -140,7 +146,12 @@ export const login = async (req: Request, res: Response) => {
 	    });
 	}
 
-	// 7 - verify password
+	// 7 - verify password (OAuth users won't have a passwordHash)
+	if (!user.passwordHash) {
+	    return res.status(401).json({
+		error: 'This account uses LinkedIn login. Please sign in with LinkedIn.',
+	    });
+	}
 	const isPasswordValid = await comparePassword(password, user.passwordHash);
 
 	if (!isPasswordValid) {
@@ -173,3 +184,156 @@ export const login = async (req: Request, res: Response) => {
     }
 };
 
+
+/**
+ * GET /api/auth/linkedin
+ * Initiates LinkedIn OAuth flow by redirecting to LinkedIn
+ */
+export const linkedinAuth = async (req: Request, res: Response) => {
+    try {
+	// Generate CSRF protection state token
+	const state = crypto.randomBytes(16).toString('hex');
+
+	// Encode state as JWT with 5-minute expiration (stateless validation)
+	const stateToken = jwt.sign({ state }, JWT_SECRET, { expiresIn: '5m' });
+
+	// Build LinkedIn authorization URL and redirect
+	const authUrl = getLinkedInAuthUrl(stateToken);
+	res.redirect(authUrl);
+    } catch (error) {
+	console.error('LinkedIn auth initiation error:', error);
+	res.status(500).json({ error: 'Failed to initiate LinkedIn authentication' });
+    }
+};
+
+
+/**
+ * GET /api/auth/linkedin/callback
+ * LinkedIn redirects here after user authorization
+ */
+export const linkedinCallback = async (req: Request, res: Response) => {
+    try {
+	const { code, state, error: oauthError } = req.query as {
+	    code?: string;
+	    state?: string;
+	    error?: string;
+	};
+
+	const frontendUrl = process.env.FRONTEND_URL || 'http://localhost:19006';
+
+	// Handle user denial
+	if (oauthError === 'user_cancelled_authorize') {
+	    return res.redirect(`${frontendUrl}/auth/error?message=Authorization cancelled`);
+	}
+
+	// Validate required parameters
+	if (!code || !state) {
+	    return res.status(400).json({ error: 'Missing code or state parameter' });
+	}
+
+	// Verify state token (CSRF protection)
+	try {
+	    jwt.verify(state, JWT_SECRET);
+	} catch {
+	    return res.status(401).json({ error: 'Invalid state parameter' });
+	}
+
+	// Exchange code for access token
+	const accessToken = await getLinkedInAccessToken(code);
+
+	// Fetch user profile from LinkedIn
+	const linkedinProfile = await getLinkedInProfile(accessToken);
+
+	// Validate email is provided
+	if (!linkedinProfile.email) {
+	    return res.status(400).json({
+		error: 'Email address required',
+		suggestion: 'Please make your email visible to third-party apps in LinkedIn settings',
+	    });
+	}
+
+	// Find existing user by LinkedIn ID
+	let user = await User.findOne({ linkedinId: linkedinProfile.sub });
+
+	if (!user) {
+	    // Check if email already exists with password auth (email conflict)
+	    const existingEmailUser = await User.findOne({
+		email: linkedinProfile.email.toLowerCase().trim(),
+	    });
+
+	    if (existingEmailUser) {
+		return res.redirect(
+		    `${frontendUrl}/auth/error?message=Email already registered with password&suggestion=Please login with your password`
+		);
+	    }
+
+	    // Create new user from LinkedIn data
+	    user = await User.create({
+		name: linkedinProfile.name,
+		email: linkedinProfile.email.toLowerCase().trim(),
+		linkedinId: linkedinProfile.sub,
+		profilePhoto: linkedinProfile.picture,
+		authProvider: 'linkedin',
+		lastLogin: new Date(),
+	    });
+	} else {
+	    // Update existing user's last login
+	    user.lastLogin = new Date();
+	    await user.save();
+	}
+
+	// Generate single-use auth code and redirect to frontend
+	const authCode = crypto.randomBytes(32).toString('hex');
+	await AuthCode.create({ code: authCode, userId: user._id });
+	return res.redirect(`${frontendUrl}/auth/callback?code=${authCode}`);
+
+    } catch (error: any) {
+	console.error('LinkedIn callback error:', error);
+
+	const frontendUrl = process.env.FRONTEND_URL || 'http://localhost:19006';
+	if (error.message?.includes('LinkedIn')) {
+	    return res.redirect(`${frontendUrl}/auth/error?message=LinkedIn authentication failed`);
+	}
+
+	res.status(500).json({ error: 'Authentication failed. Please try again.' });
+    }
+};
+
+
+/**
+ * POST /api/auth/exchange
+ * Exchange a single-use auth code for a JWT token
+ *
+ * @param req.body.code - The auth code from the OAuth callback redirect
+ * @returns 200 with userId and JWT token on success
+ */
+export const exchangeAuthCode = async (req: Request, res: Response) => {
+    try {
+	const { code } = req.body as { code?: string };
+
+	if (!code) {
+	    return res.status(400).json({ error: 'Auth code is required' });
+	}
+
+	// Find and delete the auth code in one atomic operation (single-use)
+	const authCodeDoc = await AuthCode.findOneAndDelete({ code });
+
+	if (!authCodeDoc) {
+	    return res.status(401).json({ error: 'Invalid or expired auth code' });
+	}
+
+	// Generate JWT token
+	const token = generateToken(authCodeDoc.userId.toString());
+
+	res.status(200).json({
+	    message: 'Authentication successful',
+	    userId: authCodeDoc.userId,
+	    token,
+	});
+
+    } catch (err: any) {
+	console.error('POST /api/auth/exchange error:', err);
+	res.status(500).json({ error: 'Failed to exchange auth code' });
+    }
+};
+

shatter-backend/src/controllers/bingo_controller.ts

@@ -72,25 +72,21 @@ export async function createBingo(req: Request, res: Response) {
   }
 }
 
-
-/**
- * @param req.body.id - Bingo _id (string) OR Event _id (ObjectId string) (required)
- */
 export async function getBingo(req: Request, res: Response) {
   try {
-    const { id } = req.body;
+    const { eventId } = req.params;
 
-    if (!id) {
+    if (!eventId) {
       return res.status(400).json({
         success: false,
-        msg: "id is required",
+        msg: "eventId is required",
       });
     }
 
-    let bingo = await Bingo.findById(id);
+    let bingo = await Bingo.findById(eventId);
 
-    if (!bingo && Types.ObjectId.isValid(id)) {
-      bingo = await Bingo.findOne({ _eventId: id });
+    if (!bingo && Types.ObjectId.isValid(eventId)) {
+      bingo = await Bingo.findOne({ _eventId: eventId });
     }
 
     if (!bingo) {

shatter-backend/src/controllers/event_controller.ts

@@ -5,6 +5,7 @@ import { pusher } from "../utils/pusher_websocket";
 import "../models/participant_model";
 
 import { generateJoinCode } from "../utils/event_utils";
+import { generateToken } from "../utils/jwt_utils";
 import { Participant } from "../models/participant_model";
 import { User } from "../models/user_model";
 import { Types } from "mongoose";
@@ -247,20 +248,33 @@ export async function joinEventAsGuest(req: Request, res: Response) {
       return res.status(400).json({ success: false, msg: "Event is full" });
     }
 
-    // Create guest participant (userId is null)
+    // Create a guest user account so they get a JWT and can complete their profile later
+    const user = await User.create({
+      name,
+      authProvider: 'guest',
+    });
+
+    const userId = user._id as Types.ObjectId;
+    const token = generateToken(userId.toString());
+
+    // Create participant linked to the new user
     const participant = await Participant.create({
-      userId: null,
+      userId,
       name,
       eventId,
     });
 
     const participantId = participant._id as Types.ObjectId;
 
-    // Add participant to event
+    // Add participant to event and event to user history
     await Event.updateOne(
       { _id: eventId },
       { $addToSet: { participantIds: participantId } },
     );
+    await User.updateOne(
+      { _id: userId },
+      { $addToSet: { eventHistoryIds: eventId } },
+    );
 
     // Emit socket
     console.log("Room socket:", eventId);
@@ -278,6 +292,8 @@ export async function joinEventAsGuest(req: Request, res: Response) {
     return res.json({
       success: true,
       participant,
+      userId,
+      token,
     });
   } catch (e: any) {
     if (e.code === 11000) {
@@ -328,3 +344,41 @@ export async function getEventById(req: Request, res: Response) {
     res.status(500).json({ success: false, error: err.message });
   }
 }
+
+/**
+ * GET /api/events/createdEvents/user/:userId
+ * Get list of events created by a specific user
+ *
+ * @param req.params.userId - User ID (required)
+ *
+ * @returns 200 with list of events on success
+ * @returns 400 if userId is missing
+ * @returns 404 if no events are found for the user
+ */
+export async function getEventsByUserId(req: Request, res: Response) {
+  try {
+    const { userId } = req.params;
+
+    if (!userId) {
+      return res
+        .status(400)
+        .json({ success: false, error: "userId is required" });
+    }
+
+    const events = await Event.find({ createdBy: userId });
+
+    if (!events || events.length === 0) {
+      return res.status(404).json({
+        success: false,
+        error: "No events found for this user",
+      });
+    }
+
+    res.status(200).json({
+      success: true,
+      events,
+    });
+  } catch (err: any) {
+    res.status(500).json({ success: false, error: err.message });
+  }
+}