Meeting Organizing system

A modern web application for scheduling meetings with Google's career page inspired design. Features user and admin panels with n8n workflow integration.

Recent Fixes (August 2025)

Admin Dashboard Issues Resolved ✅

• Fixed "currentMeetings is not iterable" error - Enhanced array initialization and error handling
• Improved n8n integration - Added support for multiple response formats from n8n webhooks
• Enhanced field compatibility - Support for both camelCase and snake_case field names
• Better error handling - Graceful fallback to sample data when n8n is unavailable
• Added n8n simulator - For testing the integration without a full n8n setup

Testing the Integration

1. With n8n simulator:

   # Terminal 1
   node n8n-simulator.js
   
   # Terminal 2  
   npm run dev

2. With actual n8n: Update .env with your n8n webhook URLs

For detailed information about the fixes and n8n integration, see FIXES_AND_N8N_INTEGRATION.md.

Features

User Panel

• 📅 Easy Meeting Booking - Simple form to request meetings
• 🎨 Google-inspired Design - Clean, modern interface
• 📱 Responsive Layout - Works on all devices
• ✅ Real-time Validation - Instant feedback on form inputs
• 📧 Email Notifications - Automatic confirmations

Admin Panel

• 👨‍💼 Secure Authentication - Password-protected access
• 📊 Dashboard Overview - Quick stats and metrics
• 📋 Meeting Management - Approve, reject, or reschedule meetings
• 🔍 Advanced Filtering - Filter by status, priority, type
• ⚡ Real-time Updates - Auto-refresh functionality
• 🔄 n8n Sync Button - Manual trigger to sync with n8n workflows

Prerequisites

• Node.js (v14 or higher)
• n8n instance running
• Google Sheets API access (for n8n workflow)
• Gmail API access (for email notifications)

Installation

1. Clone or download the project

   git clone <repository-url>
   cd meeting-arrangement-system

2. Install dependencies

   npm install

3. Configure environment variables

   • Copy the .env file and update the values:

   # Admin Authentication
   ADMIN_USERNAME=admin
   ADMIN_PASSWORD=admin123
   
   # n8n Webhook URLs
   MEETING_REQUEST_WEBHOOK=http://localhost:5678/webhook/meeting-request
   ADMIN_ACTION_WEBHOOK=http://localhost:5678/webhook/admin/meetings/action
   ADMIN_MEETINGS_WEBHOOK=http://localhost:5678/webhook/admin/meetings
   
   # Application Settings
   PORT=3000
   ADMIN_EMAIL=[email protected]
   COMPANY_NAME=Your Company Name
   
   # Security
   SESSION_TIMEOUT=3600000
   ALLOWED_ORIGINS=http://localhost:3000,http://127.0.0.1:3000

4. Set up n8n workflow

   • Import the Meeting Arrangement Workflow.json into your n8n instance
   • Configure Google Sheets and Gmail credentials
   • Update webhook URLs in the .env file

5. Set up Google Sheets

   • Run the meeting-sheets-setup.gs script in Google Apps Script
   • Copy the generated spreadsheet ID to your n8n workflow

Usage

Development Mode

npm run dev

The application will start on http://localhost:3000 with auto-reload.

Production Mode

npm start

Access Points

• User Panel: http://localhost:3000/
• Admin Panel: http://localhost:3000/admin
• Health Check: http://localhost:3000/api/health

Admin Credentials

Default admin credentials (change in .env):

• Username: admin
• Password: admin123

API Endpoints

Public Endpoints

• POST /api/meeting/request - Submit meeting request
• GET /api/health - Health check

Admin Endpoints (Authentication Required)

• POST /api/admin/login - Admin login
• POST /api/admin/logout - Admin logout
• GET /api/admin/meetings - Get all meetings
• POST /api/admin/meeting/action - Approve/reject/reschedule meeting

Project Structure

meeting-arrangement-system/
├── public/                 # Static files
│   ├── css/               # Stylesheets
│   │   ├── styles.css     # Main styles
│   │   └── admin.css      # Admin panel styles
│   ├── js/                # JavaScript files
│   │   ├── user-panel.js  # User panel functionality
│   │   ├── admin-login.js # Admin login functionality
│   │   └── admin-dashboard.js # Admin dashboard functionality
│   ├── index.html         # User panel
│   ├── admin-login.html   # Admin login page
│   ├── admin-dashboard.html # Admin dashboard
│   └── 404.html          # Error page
├── server.js              # Express server
├── package.json           # Dependencies
├── .env                   # Environment variables
├── Meeting Arrangement Workflow.json # n8n workflow
├── meeting-sheets-setup.gs # Google Sheets setup script
└── README.md             # This file

n8n Workflow Integration

The system integrates with n8n workflows for:

1. Meeting Request Processing

   • Validates and logs requests to Google Sheets
   • Sends confirmation email to user
   • Notifies admin via email

2. Admin Actions

   • Processes approve/reject/reschedule decisions
   • Updates Google Sheets records
   • Sends outcome emails to users
   • Creates calendar events for approved meetings

3. Automated Reminders

   • 24-hour and 1-hour meeting reminders
   • Email notifications to participants

Security Features

• Helmet.js - Security headers
• Rate Limiting - Prevents abuse
• CORS Protection - Cross-origin request security
• Session Management - Secure admin sessions
• Input Validation - Prevents malicious input
• CSRF Protection - Request validation

Environment Variables

Variable	Description	Default
PORT	Server port	3000
ADMIN_USERNAME	Admin login username	admin
ADMIN_PASSWORD	Admin login password	admin123
ADMIN_EMAIL	Admin email address	-
COMPANY_NAME	Company name for branding	Your Company
MEETING_REQUEST_WEBHOOK	n8n meeting request webhook	-
ADMIN_ACTION_WEBHOOK	n8n admin action webhook	-
ADMIN_MEETINGS_WEBHOOK	n8n meetings list webhook	-
SESSION_TIMEOUT	Session timeout in ms	3600000
ALLOWED_ORIGINS	CORS allowed origins	-

Troubleshooting

Common Issues

1. Cannot connect to n8n

   • Check if n8n is running on the correct port
   • Verify webhook URLs in .env
   • Check n8n workflow is active

2. Admin login fails

   • Verify ADMIN_USERNAME and ADMIN_PASSWORD in .env
   • Check browser console for errors

3. Emails not sending

   • Check Gmail API credentials in n8n
   • Verify email configuration in workflow

4. Google Sheets integration fails

   • Check Google Sheets API credentials
   • Verify sheet ID in n8n workflow
   • Run the setup script again

Logs and Debugging

• Check server console for error messages
• Use browser developer tools for client-side issues
• Enable n8n workflow debug mode
• Check Google Sheets for data persistence

Support

For support and questions:

• Check the troubleshooting section
• Review server and browser console logs
• Contact system administrator

License

MIT License - see LICENSE file for details.

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Built with ❤️ using Node.js, Express, and n8n automation.