# Product & Event Real-Time Sync - Quick Reference

## 🎯 What Was Implemented

Real-time synchronization of **Products** and **Events** from admin dashboard to public pages (shop.php and events.php).

---

## 📊 System Architecture

```
┌─────────────────────────────────────────────┐
│      ADMIN DASHBOARD                         │
│  (admin-dashboard.php)                       │
│  - Manage Products                           │
│  - Manage Events                             │
│  - GET Endpoints for data                    │
└─────────────────────────────────────────────┘
          ↓                       ↓
    (every 5 seconds)      (every 5 seconds)
          ↓                       ↓
┌──────────────────────┐  ┌──────────────────────┐
│   SHOP PAGE          │  │   EVENTS PAGE        │
│ (shop.php)           │  │ (events.php)         │
│ - Display Products   │  │ - Display Events     │
│ - Real-time Sync     │  │ - Real-time Sync     │
└──────────────────────┘  └──────────────────────┘
```

---

## 🔗 New API Endpoints

**Products:**
```
GET /admin-dashboard.php?action=get_products
```

**Events:**
```
GET /admin-dashboard.php?action=get_events
```

---

## ⏱️ Update Interval

**5 Seconds** - Products and Events refresh every 5 seconds

---

## 📝 Files Modified

| File | Changes | Status |
|------|---------|--------|
| admin-dashboard.php | GET endpoints (+46 lines) | ✅ Ready |
| shop.php | Real-time sync functions (+70 lines) | ✅ Ready |
| events.php | Real-time sync functions (+110 lines) | ✅ Ready |

---

## 🚀 How It Works

### For Products:
1. Admin adds/edits/deletes product
2. Data saved to database
3. shop.php fetches latest products every 5 seconds
4. Products grid updates automatically
5. Users see changes without page reload

### For Events:
1. Admin adds/edits/deletes event
2. Data saved to database
3. events.php fetches latest events every 5 seconds
4. Events grid updates automatically
5. Users see changes without page reload

---

## 📱 What Shows Up

### In shop.php:
- Product image
- Product name
- Product category
- Price & original price
- Discount badge
- Product description preview
- Wishlist & view details buttons

### In events.php:
- Event image/banner
- Event name
- Event category badge
- Instructor name
- Date, time, location
- Capacity bar with registration count
- Event price
- Register button

---

## ✅ Quick Checklist

- [x] GET endpoints created in admin-dashboard.php
- [x] shop.php updated with real-time sync
- [x] events.php updated with real-time sync
- [x] 5-second auto-refresh implemented
- [x] No errors found
- [x] All data fields included
- [x] Graceful error handling
- [x] Automatic cleanup on page unload

---

## 🔄 Real-Time Sync Flow

```
Page Loads
   ↓
initProductRealTimeSync() / initEventRealTimeSync()
   ↓
Every 5 seconds:
   ├─ Fetch data from admin-dashboard.php
   ├─ Receive JSON response
   ├─ Generate new HTML
   ├─ Update grid container
   └─ Repeat
```

---

## 📊 Data Fetched

### Products Include:
- ID, Name, Category
- Price, Original Price
- Description, Image
- Stock availability

### Events Include:
- ID, Name, Description
- Date, Time, Location
- Category, Instructor
- Price, Image, Status
- Registered count, Capacity

---

## 🛠️ JavaScript Functions

**shop.php:**
- `initProductRealTimeSync()` - Start sync
- `updateProductDisplay(products)` - Update grid

**events.php:**
- `initEventRealTimeSync()` - Start sync
- `updateEventDisplay(events)` - Update grid

---

## 💡 Key Features

✅ Real-time automatic updates every 5 seconds  
✅ No page refresh needed  
✅ New items appear automatically  
✅ Deleted items disappear automatically  
✅ Updated data reflects immediately  
✅ Graceful error handling  
✅ Automatic cleanup  
✅ Lightweight AJAX requests  

---

## 📞 How to Use

**Adding a Product:**
1. Admin Dashboard → Products → Add New Product
2. Fill details and save
3. Within 5 seconds: Appears in shop.php

**Adding an Event:**
1. Admin Dashboard → Events → Add New Event
2. Fill details and save
3. Within 5 seconds: Appears in events.php

**Updating:**
1. Admin Dashboard → Edit item
2. Save changes
3. Within 5 seconds: Changes show on public page

**Deleting:**
1. Admin Dashboard → Delete item
2. Confirm deletion
3. Within 5 seconds: Item removed from public page

---

## 🎉 Status

**✅ IMPLEMENTATION COMPLETE**

All systems working:
- ✅ Products syncing
- ✅ Events syncing
- ✅ No errors
- ✅ Real-time updates active
- ✅ Production ready

---

**Last Updated:** January 23, 2026  
**Version:** 1.0 Complete
