# Sync Last 10 Orders Feature

**Date:** 2025-11-20
**Purpose:** Quick sync button to test Google Sheets sync without rate limiting
**Status:** ✅ IMPLEMENTED

---

## ✨ What Was Added

### New Button: "Sync Last 10 Orders"

**Location:** `/settings/google-sheets`

Now sellers have TWO sync options:

1. **"Sync Last 10 Orders"** (New! - Green button)
   - Syncs only the 10 most recent orders
   - Takes ~10-20 seconds (1.2s delay per order)
   - Safe for testing - won't hit rate limits
   - Perfect for checking if sync is working

2. **"Sync Last 100 Orders"** (Existing - Blue button)
   - Syncs the 100 most recent orders
   - Takes ~2-3 minutes
   - Includes confirmation dialog
   - For backfilling historical data

---

## 🔍 How It Works

### When Seller Clicks "Sync Last 10 Orders":

```
1. Button clicked
   ↓
2. POST to /google-sheets/sync-recent
   ↓
3. Controller: GoogleAuthController@syncRecent()
   ↓
4. Dispatches job: SyncOrderToGoogleSheets::dispatch($user, null, true, 10)
   ↓
5. Job runs batchSyncOrders() with limit=10
   ↓
6. Fetches seller's last 10 orders:
   - Orders created by this seller (created_by = seller_id)
   - OR orders from stores assigned to this seller
   ↓
7. Syncs each order to seller's Google Sheet
   - 1.2 second delay between each order (rate limiting)
   ↓
8. Success message: "Syncing your last 10 orders..."
```

---

## 📋 Testing Checklist

### On Live Server (After Upload):

**For Each Seller (1, 2, 3, 4):**

1. **Login as seller** (or impersonate)
2. **Go to:** `/settings/google-sheets`
3. **Verify you see TWO buttons:**
   - ✅ Green "Sync Last 10 Orders" button
   - ✅ Blue "Sync Last 100 Orders" button
4. **Click:** "Sync Last 10 Orders"
5. **Wait:** 10-20 seconds
6. **Open seller's Google Sheet in new tab**
7. **Verify:** Last 10 orders appeared in sheet
8. **Check logs:**
   ```bash
   tail -f storage/logs/laravel.log | grep "seller_id\":X"
   ```
   (Replace X with seller's ID)

**Expected Log Output:**
```
[2025-11-20 10:00:00] Recent sync queued {"user_id":5}
[2025-11-20 10:00:01] Google Sheets batch sync started {"user_id":5,"limit":10}
[2025-11-20 10:00:02] Order synced to Google Sheets {"user_id":5,"order_id":233}
[2025-11-20 10:00:03] Order synced to Google Sheets {"user_id":5,"order_id":232}
...
[2025-11-20 10:00:15] Google Sheets batch sync completed {"user_id":5,"synced":10,"failed":0}
```

---

## 🔍 What This Helps Diagnose

### If Seller 1 Works But Seller 2 Doesn't:

**After clicking "Sync Last 10 Orders" for Seller 2:**

✅ **If orders appear in sheet:**
- Seller 2's Google Sheets connection is working!
- Issue was with automatic sync (OrderObserver)
- Need to check if queue worker is running
- Check if real-time sync is enabled

❌ **If orders DON'T appear in sheet:**
- Check logs immediately for errors
- Possible issues:
  - Expired Google token → Seller needs to reconnect
  - Wrong sheet ID in database
  - Google API error
  - Queue worker not running

---

## 📊 Sync Logic Verification

The `batchSyncOrders()` method correctly filters orders per seller:

```php
// From GoogleSheetsService.php line 421-426
if ($user->isSeller()) {
    $storeIds = $user->getStoreIds();
    $query->where(function($q) use ($storeIds, $user) {
        $q->whereIn('store_id', $storeIds)
          ->orWhere('created_by', $user->id);
    });
}
```

**This means:**
- Seller 1 syncs → Only Seller 1's orders ✓
- Seller 2 syncs → Only Seller 2's orders ✓
- Seller 3 syncs → Only Seller 3's orders ✓
- Seller 4 syncs → Only Seller 4's orders ✓

**No cross-contamination!** Each seller only sees their own orders.

---

## 🎯 Rate Limiting

**"Sync Last 10 Orders":**
- 10 orders × 1.2 seconds = 12 seconds total
- 10 requests in 12 seconds = ~50 requests/minute
- ✅ Safe - stays under Google's 60 req/min limit

**"Sync Last 100 Orders":**
- 100 orders × 1.2 seconds = 120 seconds (2 minutes)
- 100 requests in 2 minutes = 50 requests/minute
- ✅ Safe - stays under limit

**Why 1.2 seconds delay?**
- Google Sheets API free tier: 60 requests/minute
- 60 seconds ÷ 50 requests = 1.2 seconds per request
- Leaves 10 req/min buffer for safety

---

## 🛠️ Files Modified

### 1. `resources/views/settings/google-sheets.blade.php`
**Changed:**
- Added new green "Sync Last 10 Orders" button
- Updated existing button text to "Sync Last 100 Orders"
- Added confirmation dialog to full sync button

### 2. `app/Http/Controllers/GoogleAuthController.php`
**Added:**
- New method: `syncRecent()` (lines 172-199)
  - Dispatches job with limit=10
  - Returns success message

**Modified:**
- Updated `manualSync()` success message to mention "100 orders"

### 3. `routes/web.php`
**Added:**
- New route: `POST /google-sheets/sync-recent`
- Maps to: `GoogleAuthController@syncRecent`
- Route name: `google-sheets.sync-recent`

### 4. `docs/SYNC_LAST_10_ORDERS_FEATURE.md` (this file)
- Complete documentation of new feature

---

## ✅ Syntax Checks

All modified files passed syntax validation:
- ✓ GoogleAuthController.php
- ✓ routes/web.php
- ✓ google-sheets.blade.php (Blade template, no PHP syntax check needed)

---

## 🚀 Deployment Steps

1. **Upload modified files to live server:**
   - `app/Http/Controllers/GoogleAuthController.php`
   - `routes/web.php`
   - `resources/views/settings/google-sheets.blade.php`

2. **No migrations needed** (no database changes)

3. **No cache clear needed** (routes auto-reload)

4. **Test immediately:**
   - Login as each seller
   - Click "Sync Last 10 Orders"
   - Watch logs and Google Sheets

---

## 📝 Next Steps After Upload

Once uploaded to live server:

1. **Run diagnostic:**
   ```bash
   php artisan googlesheets:diagnose
   ```

2. **Test with each seller:**
   - Click "Sync Last 10 Orders"
   - Monitor logs
   - Check Google Sheets

3. **Report back:**
   - Which sellers' sync worked?
   - Which failed?
   - Any error messages in logs?

This will help identify if it's a token issue, queue issue, or something else!

---

**Status:** Ready to upload and test on live server

