fix: add user creation logic to event controller

- Add findOrCreateUser helper function to handle Clerk ID to database ID mapping
- Update all authenticated endpoints to convert Clerk ID to database user ID
- Ensures events can be created and managed by authenticated users
- Matches pattern used in reportController

server/src/controllers/eventController.ts

@@ -1,6 +1,43 @@
 import { Response } from 'express';
 import { AuthRequest } from '../middleware/auth';
 import { eventService } from '../services/eventService';
+import prisma from '../config/database';
+import { clerkClient } from '@clerk/clerk-sdk-node';
+
+// Helper to find or create user from Clerk ID
+async function findOrCreateUser(clerkId: string): Promise<string> {
+  // Check if user exists
+  let user = await prisma.user.findUnique({
+    where: { clerkId },
+    select: { id: true },
+  });
+
+  if (user) {
+    return user.id;
+  }
+
+  // User doesn't exist, fetch from Clerk and create
+  try {
+    const clerkUser = await clerkClient.users.getUser(clerkId);
+    
+    user = await prisma.user.create({
+      data: {
+        clerkId,
+        email: clerkUser.emailAddresses[0]?.emailAddress || `${clerkId}@temp.com`,
+        username: clerkUser.username || `user_${clerkId.substring(0, 8)}`,
+        firstName: clerkUser.firstName,
+        lastName: clerkUser.lastName,
+        avatarUrl: clerkUser.imageUrl,
+      },
+      select: { id: true },
+    });
+
+    return user.id;
+  } catch (error) {
+    console.error('Error creating user from Clerk:', error);
+    throw new Error('Failed to create user');
+  }
+}
 
 export const eventController = {
   // Get all events with optional filters
@@ -60,8 +97,8 @@ export const eventController = {
   // Create new event
   async createEvent(req: AuthRequest, res: Response) {
     try {
-      const userId = req.userId;
-      if (!userId) {
+      const clerkId = req.userId;
+      if (!clerkId) {
         return res.status(401).json({
           code: 'UNAUTHORIZED',
           message: 'User not authenticated',
@@ -69,6 +106,9 @@ export const eventController = {
         });
       }
 
+      // Find or create user in database
+      const userId = await findOrCreateUser(clerkId);
+
       const { title, description, latitude, longitude, locationName, scheduledDate, duration } = req.body;
 
       // Validation
@@ -107,8 +147,8 @@ export const eventController = {
   // Update event
   async updateEvent(req: AuthRequest, res: Response) {
     try {
-      const userId = req.userId;
-      if (!userId) {
+      const clerkId = req.userId;
+      if (!clerkId) {
         return res.status(401).json({
           code: 'UNAUTHORIZED',
           message: 'User not authenticated',
@@ -116,6 +156,8 @@ export const eventController = {
         });
       }
 
+      const userId = await findOrCreateUser(clerkId);
+
       const { id } = req.params;
       const event = await eventService.getEventById(id);
 
@@ -152,8 +194,8 @@ export const eventController = {
   // Delete event
   async deleteEvent(req: AuthRequest, res: Response) {
     try {
-      const userId = req.userId;
-      if (!userId) {
+      const clerkId = req.userId;
+      if (!clerkId) {
         return res.status(401).json({
           code: 'UNAUTHORIZED',
           message: 'User not authenticated',
@@ -161,6 +203,8 @@ export const eventController = {
         });
       }
 
+      const userId = await findOrCreateUser(clerkId);
+
       const { id } = req.params;
       const event = await eventService.getEventById(id);
 
@@ -197,8 +241,8 @@ export const eventController = {
   // Register for event
   async registerForEvent(req: AuthRequest, res: Response) {
     try {
-      const userId = req.userId;
-      if (!userId) {
+      const clerkId = req.userId;
+      if (!clerkId) {
         return res.status(401).json({
           code: 'UNAUTHORIZED',
           message: 'User not authenticated',
@@ -206,6 +250,8 @@ export const eventController = {
         });
       }
 
+      const userId = await findOrCreateUser(clerkId);
+
       const { id } = req.params;
       const registration = await eventService.registerForEvent(id, userId);
       res.status(201).json(registration);
@@ -232,8 +278,8 @@ export const eventController = {
   // Unregister from event
   async unregisterFromEvent(req: AuthRequest, res: Response) {
     try {
-      const userId = req.userId;
-      if (!userId) {
+      const clerkId = req.userId;
+      if (!clerkId) {
         return res.status(401).json({
           code: 'UNAUTHORIZED',
           message: 'User not authenticated',
@@ -241,6 +287,8 @@ export const eventController = {
         });
       }
 
+      const userId = await findOrCreateUser(clerkId);
+
       const { id } = req.params;
       await eventService.unregisterFromEvent(id, userId);
       res.status(204).send();
@@ -275,11 +323,13 @@ export const eventController = {
   // Check registration status
   async getRegistrationStatus(req: AuthRequest, res: Response) {
     try {
-      const userId = req.userId;
-      if (!userId) {
+      const clerkId = req.userId;
+      if (!clerkId) {
         return res.json({ registered: false });
       }
 
+      const userId = await findOrCreateUser(clerkId);
+
       const { id } = req.params;
       const isRegistered = await eventService.isUserRegistered(id, userId);
       res.json({ registered: isRegistered });