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* ML Integration & Drive Structure (Planned/Current):
*
* 1. Event Recommendation:
* - Endpoint will call external ML API to fetch personalized event recommendations for users (for dashboard).
* - Fallback logic should be present if ML API is unavailable.
*
* 2. Certificate Generation:
* - Host selects/uploads certificate template for event.
* - Certificate generation endpoint will call ML API, restricted to users marked as 'attended'.
* - Generated certificates will be stored and linked to users.
* - (Planned) All certificates for an event will be stored in a Drive folder named after the event.
*
* 3. Event Images:
* - Logos and banners are uploaded to separate Drive folders (see driveService.js for details).
*
* These comments are for documentation and planning only; they do not affect code execution.
*/
const Event = require('../Models/Event');
const User = require('../Models/User');
const EventParticipationLog = require('../Models/EventParticipationLog');
const { uploadEventImage } = require('../Services/driveService');
const qrcode = require('qrcode');
const { createEmailService } = require('../Services/email');
const emailService = createEmailService();
const { notifyUser, notifyUsers } = require('../Services/notification');
// Create a new event (host/co-host)
async function createEvent(req, res) {
try {
const { title, description, tags, type, organizer, schedule, isPaid, price, capacity } = req.body;
let logoURL, bannerURL;
if (req.files && req.files['logo']) {
logoURL = await uploadEventImage(req.files['logo'][0].buffer, req.files['logo'][0].originalname, 'logo');
}
if (req.files && req.files['banner']) {
bannerURL = await uploadEventImage(req.files['banner'][0].buffer, req.files['banner'][0].originalname, 'banner');
}
const event = await Event.create({
title, description, tags, type, organizer, schedule, isPaid, price, capacity,
logoURL, bannerURL,
hostUserId: req.user.id,
institutionId: req.user.institutionId
});
res.status(201).json(event);
} catch (err) {
res.status(500).json({ error: 'Error creating event.' });
}
}
// Get event by ID
async function getEventById(req, res) {
try {
const event = await Event.findById(req.params.id);
if (!event) return res.status(404).json({ error: 'Event not found.' });
res.json(event);
} catch (err) {
res.status(500).json({ error: 'Error fetching event.' });
}
}
// Update event (host/co-host)
async function updateEvent(req, res) {
try {
const update = req.body;
if (req.files && req.files['logo']) {
update.logoURL = await uploadEventImage(req.files['logo'][0].buffer, req.files['logo'][0].originalname, 'logo');
}
if (req.files && req.files['banner']) {
update.bannerURL = await uploadEventImage(req.files['banner'][0].buffer, req.files['banner'][0].originalname, 'banner');
}
const event = await Event.findByIdAndUpdate(req.params.id, update, { new: true });
if (!event) return res.status(404).json({ error: 'Event not found.' });
res.json(event);
} catch (err) {
res.status(500).json({ error: 'Error updating event.' });
}
}
// Delete event (host/co-host)
async function deleteEvent(req, res) {
try {
const event = await Event.findByIdAndDelete(req.params.id);
if (!event) return res.status(404).json({ error: 'Event not found.' });
res.json({ message: 'Event deleted.' });
} catch (err) {
res.status(500).json({ error: 'Error deleting event.' });
}
}
// RSVP/register for event (user)
async function rsvpEvent(req, res) {
try {
const { eventId } = req.body;
const userId = req.user.id;
const event = await Event.findById(eventId);
if (!event) return res.status(404).json({ error: 'Event not found.' });
// Waitlist logic
const registeredCount = await EventParticipationLog.countDocuments({ eventId, status: 'registered' });
const isFull = event.capacity && registeredCount >= event.capacity;
const status = isFull ? 'waitlisted' : 'registered';
// Generate QR token
const qrToken = `${eventId}_${userId}_${Date.now()}`;
// Generate QR code image
const qrImage = await qrcode.toDataURL(qrToken);
// Create participation log
const log = await EventParticipationLog.create({
userId, eventId, status, qrToken
});
// Update event waitlist if waitlisted
if (status === 'waitlisted') {
if (!event.waitlist.map(id => id.toString()).includes(userId.toString())) {
event.waitlist.push(userId);
await event.save();
}
} else {
// If user was previously waitlisted, remove from waitlist
event.waitlist = event.waitlist.filter(id => id.toString() !== userId.toString());
await event.save();
}
// Email QR code to user
await sendQrEmail(req.user.email, qrImage, event.title);
console.log(`[AUDIT] RSVP: user ${userId} for event ${eventId} as ${status}`);
res.status(201).json({ message: `RSVP successful. Status: ${status}. QR code sent to email.`, qrImage });
// Notify user (confirmation)
await notifyUser({
userId,
type: 'rsvp',
message: `You have successfully registered for ${event.title}.`,
data: { eventId, eventTitle: event.title },
emailOptions: {
to: req.user.email,
subject: `RSVP Confirmation for ${event.title}`,
html: `<p>Hi ${req.user.name},<br>You have successfully registered for <b>${event.title}</b>.</p>`
}
});
// Notify host/co-hosts (new registration)
const hostAndCoHosts = [event.hostUserId, ...(event.coHosts || [])]
.filter(id => id != null) // Remove null/undefined values
.map(id => String(id)) // Safely convert to string
.filter(id => id !== userId); // Exclude the current user
await notifyUsers({
userIds: hostAndCoHosts,
type: 'rsvp',
message: `${req.user.name} has registered for your event: ${event.title}.`,
data: { eventId, userId },
emailOptionsFn: async (hostId) => null // Only in-app for hosts/co-hosts for now
});
} catch (err) {
res.status(500).json({ error: 'Error registering for event.' });
}
}
// Cancel RSVP for event (user)
async function cancelRsvp(req, res) {
try {
const { eventId } = req.body;
const userId = req.user.id;
const event = await Event.findById(eventId);
if (!event) return res.status(404).json({ error: 'Event not found.' });
// Remove participation log
const log = await EventParticipationLog.findOneAndDelete({ eventId, userId });
if (!log) return res.status(404).json({ error: 'No RSVP found for this user.' });
// Remove from event waitlist if present
event.waitlist = event.waitlist.filter(id => id.toString() !== userId.toString());
await event.save();
// If user was registered, promote first waitlisted user
if (log.status === 'registered') {
if (event.waitlist.length > 0) {
const nextUserId = event.waitlist[0];
// Update their participation log
const nextLog = await EventParticipationLog.findOne({ eventId, userId: nextUserId, status: 'waitlisted' });
if (nextLog) {
nextLog.status = 'registered';
await nextLog.save();
// Notify promoted user
const promotedUser = await User.findById(nextUserId);
if (promotedUser) {
await notifyUser({
userId: nextUserId,
type: 'rsvp',
message: `You have been promoted from waitlist to registered for ${event.title}.`,
data: { eventId, eventTitle: event.title },
emailOptions: {
to: promotedUser.email,
subject: `You're Registered for ${event.title}!`,
html: `<p>Hi ${promotedUser.name},<br>You have been promoted from the waitlist and are now registered for <b>${event.title}</b>!</p>`
}
});
}
}
// Remove from waitlist
event.waitlist = event.waitlist.slice(1);
await event.save();
}
}
console.log(`[AUDIT] Cancel RSVP: user ${userId} for event ${eventId}`);
res.json({ message: 'RSVP cancelled.' });
} catch (err) {
res.status(500).json({ error: 'Error cancelling RSVP.' });
}
}
// Email QR code to user
async function sendQrEmail(to, qrImage, eventTitle) {
await emailService.sendMail({
from: 'CampVerse <noreply@campverse.com>',
to,
subject: `Your Ticket for ${eventTitle}`,
html: `<p>Here is your QR ticket for <b>${eventTitle}</b>:</p><img src="${qrImage}" alt="QR Ticket" />`,
});
}
// Get participants (host/co-host only)
async function getParticipants(req, res) {
try {
const eventId = req.params.id;
const logs = await EventParticipationLog.find({ eventId });
const users = await User.find({ _id: { $in: logs.map(l => l.userId) } });
// Map logs to user details
const participants = logs.map(log => {
const user = users.find(u => u._id.equals(log.userId));
return {
name: user?.name,
email: user?.email,
phone: user?.phone,
paymentType: log.paymentType,
paymentStatus: log.paymentStatus,
status: log.status,
attendanceTimestamp: log.attendanceTimestamp
};
});
res.json(participants);
} catch (err) {
res.status(500).json({ error: 'Error fetching participants.' });
}
}
// Host/co-host scans QR to mark attendance
async function scanQr(req, res) {
try {
const { eventId, qrToken } = req.body;
if (!eventId || !qrToken) {
return res.status(400).json({ error: 'eventId and qrToken are required.' });
}
// Find event and check permissions
const event = await Event.findById(eventId);
if (!event) return res.status(404).json({ error: 'Event not found.' });
const userId = req.user.id;
const isHost = event.hostUserId && event.hostUserId.toString() === userId;
const isCoHost = event.coHosts && event.coHosts.map(id => id.toString()).includes(userId);
if (!isHost && !isCoHost) {
return res.status(403).json({ error: 'Only host or approved co-host can scan attendance for this event.' });
}
// Brute-force protection (simple in-memory, per user per event)
if (!global.scanRateLimit) global.scanRateLimit = {};
const key = `${userId}_${eventId}`;
const now = Date.now();
if (global.scanRateLimit[key] && now - global.scanRateLimit[key] < 2000) {
return res.status(429).json({ error: 'Too many scans. Please wait a moment.' });
}
global.scanRateLimit[key] = now;
// Find participation log
const log = await EventParticipationLog.findOne({ eventId, qrToken });
if (!log) return res.status(404).json({ error: 'Invalid QR code.' });
if (log.status === 'attended') {
return res.status(409).json({ error: 'Attendance already marked for this user.' });
}
// Mark attendance
log.status = 'attended';
log.attendanceTimestamp = new Date();
log.attendanceMarkedBy = userId;
log.attendanceMarkedAt = new Date();
await log.save();
// Fetch participant user for notification
const participant = await User.findById(log.userId);
if (participant) {
await notifyUser({
userId: log.userId,
type: 'attendance',
message: `Your attendance for ${event.title} has been marked. Thank you for participating!`,
data: { eventId, eventTitle: event.title },
emailOptions: {
to: participant.email,
subject: `Attendance Marked for ${event.title}`,
html: `<p>Hi ${participant.name},<br>Your attendance for <b>${event.title}</b> has been successfully marked. Thank you for participating!</p>`
}
});
}
// Audit log
console.log(`[AUDIT] Scan QR: user ${userId} scanned for event ${eventId}, participant ${log.userId}, log ${log._id}`);
res.json({ message: 'Attendance marked.' });
} catch (err) {
console.error('Error in scanQr:', err);
res.status(500).json({ error: 'Error marking attendance.' });
}
}
// Event analytics (host/co-host only)
async function getEventAnalytics(req, res) {
try {
const eventId = req.params.id;
const logs = await EventParticipationLog.find({ eventId });
const totalRegistered = logs.length;
const totalAttended = logs.filter(l => l.status === 'attended').length;
const totalWaitlisted = logs.filter(l => l.status === 'waitlisted').length;
const totalPaid = logs.filter(l => l.paymentType === 'paid').length;
const totalFree = logs.filter(l => l.paymentType === 'free').length;
const paymentSuccess = logs.filter(l => l.paymentStatus === 'success').length;
const paymentPending = logs.filter(l => l.paymentStatus === 'pending').length;
res.json({
totalRegistered,
totalAttended,
totalWaitlisted,
totalPaid,
totalFree,
paymentSuccess,
paymentPending,
attendanceRate: totalRegistered > 0 ? (totalAttended / totalRegistered * 100).toFixed(2) : 0
});
} catch (err) {
res.status(500).json({ error: 'Error fetching analytics.' });
}
}
// Nominate co-host (main host)
async function nominateCoHost(req, res) {
try {
const { eventId, userId } = req.body;
if (!eventId || !userId) {
return res.status(400).json({ error: 'eventId and userId are required.' });
}
const event = await Event.findById(eventId);
if (!event) return res.status(404).json({ error: 'Event not found.' });
// Only host can nominate
if (event.hostUserId.toString() !== req.user.id) {
return res.status(403).json({ error: 'Only the main host can nominate co-hosts.' });
}
// Prevent duplicate nominations
if (event.coHostRequests.some(r => r.userId.toString() === userId && r.status === 'pending')) {
return res.status(400).json({ error: 'Co-host nomination already pending.' });
}
event.coHostRequests.push({ userId, status: 'pending', requestedBy: req.user.id, requestedAt: new Date() });
await event.save();
// Notify nominated user
const nominatedUser = await User.findById(userId);
if (nominatedUser) {
await notifyUser({
userId,
type: 'cohost',
message: `You have been nominated as a co-host for ${event.title}. Please wait for verifier approval.`,
data: { eventId, eventTitle: event.title },
emailOptions: {
to: nominatedUser.email,
subject: `Co-host Nomination for ${event.title}`,
html: `<p>Hi ${nominatedUser.name},<br>You have been nominated as a co-host for <b>${event.title}</b>. Please wait for approval from a verifier.</p>`
}
});
}
// Notify verifiers (approval needed)
const verifiers = await User.find({ roles: 'verifier' });
await notifyUsers({
userIds: verifiers.map(v => v._id),
type: 'cohost',
message: `A new co-host nomination for event: ${event.title} requires your approval.`,
data: { eventId, userId },
emailOptionsFn: async (verifierId) => {
const verifier = verifiers.find(v => v._id.toString() === verifierId.toString());
return verifier ? {
to: verifier.email,
subject: `Co-host Nomination Approval Needed for ${event.title}`,
html: `<p>Hi ${verifier.name},<br>A new co-host nomination for <b>${event.title}</b> requires your approval.</p>`
} : null;
}
});
// Audit log
console.log(`[AUDIT] Nominate co-host: host ${req.user.id} nominated user ${userId} for event ${eventId}`);
res.json({ message: 'Co-host nomination submitted.' });
} catch (err) {
console.error('Error in nominateCoHost:', err);
res.status(500).json({ error: 'Error nominating co-host.' });
}
}
// Approve co-host (verifier)
async function approveCoHost(req, res) {
try {
const { eventId, userId } = req.body;
if (!eventId || !userId) {
return res.status(400).json({ error: 'eventId and userId are required.' });
}
const event = await Event.findById(eventId);
if (!event) return res.status(404).json({ error: 'Event not found.' });
// Only verifier can approve
if (!req.user.roles.includes('verifier') && !req.user.roles.includes('platformAdmin')) {
return res.status(403).json({ error: 'Only verifiers or platform admins can approve co-hosts.' });
}
const reqIndex = event.coHostRequests.findIndex(r => r.userId.toString() === userId && r.status === 'pending');
if (reqIndex === -1) return res.status(404).json({ error: 'Co-host request not found.' });
event.coHostRequests[reqIndex].status = 'approved';
event.coHostRequests[reqIndex].approvedBy = req.user.id;
event.coHostRequests[reqIndex].approvedAt = new Date();
// Add to coHosts if not already present
if (!event.coHosts.map(id => id.toString()).includes(userId)) {
event.coHosts.push(userId);
}
await event.save();
// Notify approved user
const approvedUser = await User.findById(userId);
if (approvedUser) {
await notifyUser({
userId,
type: 'cohost',
message: `Your co-host nomination for ${event.title} has been approved.`,
data: { eventId, eventTitle: event.title },
emailOptions: {
to: approvedUser.email,
subject: `Co-host Nomination Approved for ${event.title}`,
html: `<p>Hi ${approvedUser.name},<br>Your nomination as a co-host for <b>${event.title}</b> has been approved.</p>`
}
});
}
// Audit log
console.log(`[AUDIT] Approve co-host: verifier ${req.user.id} approved user ${userId} for event ${eventId}`);
res.json({ message: 'Co-host approved.' });
} catch (err) {
console.error('Error in approveCoHost:', err);
res.status(500).json({ error: 'Error approving co-host.' });
}
}
// Reject co-host (verifier)
async function rejectCoHost(req, res) {
try {
const { eventId, userId } = req.body;
if (!eventId || !userId) {
return res.status(400).json({ error: 'eventId and userId are required.' });
}
const event = await Event.findById(eventId);
if (!event) return res.status(404).json({ error: 'Event not found.' });
// Only verifier can reject
if (!req.user.roles.includes('verifier') && !req.user.roles.includes('platformAdmin')) {
return res.status(403).json({ error: 'Only verifiers or platform admins can reject co-hosts.' });
}
const reqIndex = event.coHostRequests.findIndex(r => r.userId.toString() === userId && r.status === 'pending');
if (reqIndex === -1) return res.status(404).json({ error: 'Co-host request not found.' });
event.coHostRequests[reqIndex].status = 'rejected';
event.coHostRequests[reqIndex].approvedBy = req.user.id;
event.coHostRequests[reqIndex].approvedAt = new Date();
await event.save();
// Notify rejected user
const rejectedUser = await User.findById(userId);
if (rejectedUser) {
await notifyUser({
userId,
type: 'cohost',
message: `Your co-host nomination for ${event.title} has been rejected.`,
data: { eventId, eventTitle: event.title },
emailOptions: {
to: rejectedUser.email,
subject: `Co-host Nomination Rejected for ${event.title}`,
html: `<p>Hi ${rejectedUser.name},<br>Your nomination as a co-host for <b>${event.title}</b> has been rejected by a verifier.</p>`
}
});
}
// Audit log
console.log(`[AUDIT] Reject co-host: verifier ${req.user.id} rejected user ${userId} for event ${eventId}`);
res.json({ message: 'Co-host rejected.' });
} catch (err) {
console.error('Error in rejectCoHost:', err);
res.status(500).json({ error: 'Error rejecting co-host.' });
}
}
// Event verification (verifier)
async function verifyEvent(req, res) {
try {
const event = await Event.findById(req.params.id);
if (!event) return res.status(404).json({ error: 'Event not found.' });
event.verificationStatus = 'approved';
await event.save();
res.json({ message: 'Event verified.' });
// Notify host of event verification result
const host = await User.findById(event.hostUserId);
if (host) {
await notifyUser({
userId: event.hostUserId,
type: 'event_verification',
message: `Your event '${event.title}' has been approved.`,
data: { eventId: event._id, status: 'approved' },
emailOptions: {
to: host.email,
subject: `Event Verification Approved: ${event.title}`,
html: `<p>Hi ${host.name},<br>Your event <b>${event.title}</b> has been <b>approved</b> by a verifier.</p>`
}
});
}
} catch (err) {
res.status(500).json({ error: 'Error verifying event.' });
}
}
// Google Calendar link endpoint
async function getGoogleCalendarLink(req, res) {
try {
const event = await Event.findById(req.params.id);
if (!event) return res.status(404).json({ error: 'Event not found.' });
const start = new Date(event.schedule.start).toISOString().replace(/-|:|\.\d\d\d/g, '');
const end = new Date(event.schedule.end).toISOString().replace(/-|:|\.\d\d\d/g, '');
const link = `https://www.google.com/calendar/render?action=TEMPLATE&text=${encodeURIComponent(event.title)}&dates=${start}/${end}&details=${encodeURIComponent(event.description)}&location=${encodeURIComponent(event.organizer)}`;
res.json({ calendarLink: link });
} catch (err) {
res.status(500).json({ error: 'Error generating calendar link.' });
}
}
module.exports = {
createEvent,
getEventById,
updateEvent,
deleteEvent,
rsvpEvent,
cancelRsvp,
getParticipants,
scanQr,
getEventAnalytics,
nominateCoHost,
approveCoHost,
rejectCoHost,
verifyEvent,
getGoogleCalendarLink
}; |