# TaxCore Transactions Enhancement Patch

## Summary
This patch upgrades the shared `taxcoreTransactions.js` component to match the full feature set from POS.js.

## Key Changes:
1. **Type Badges**: Normal (green), Proforma (cyan), Training (purple), Advance (red), Copy (orange), Refund (red)
2. **Transaction Type Badges**: Sale vs Refund with color coding
3. **Cashier Information**: Extracted from journal
4. **Items Preview**: First 3 items with "... and N more" indicator
5. **Action Buttons**:
   - View Details (all transactions)
   - Copy (all transactions)
   - New Sale (Advance transactions only)
   - Refund (non-refund transactions only)
   - Verify Receipt (transactions with verificationurl)
6. **Enhanced Amount Display**: Color-coded, with negative sign for refunds
7. **Invoice Counter Display**: Shows invoice counter if available

## Implementation Status:
The existing taxcoreTransactions.js needs these changes to renderTransactionsGrid() function:

### Required Additions:
1. Parse cashier from transaction.journal
2. Parse items from transaction.journal (first 3 items)
3. Detect saleType from journal (Normal/Proforma/Training/Advance/Copy)
4. Detect transactionType (Sale/Refund)
5. Add color-coded type badges
6. Add action buttons with data-index attributes
7. Add attachTransactionEventListeners() function
8. Implement button handlers for:
   - View Details (show Transaction Details Modal)
   - Copy (call parent module's CopyInvoice function)
   - New Sale (populate POS with customer/reference from Advance invoice)
   - Refund (show Enhanced Refund Modal)
   - Verify Receipt (open verification URL)

### Dependencies:
The shared component will need access to parent module functions:
- **View Details**: Internal showTransactionDetailsModal()
- **Copy**: Parent's CopyInvoice(salesReceiptId, invoiceNumber)
- **Refund**: Parent's showEnhanced Refund Modal(transaction)
- **New Sale**: Parent's startNewSaleFromTransaction(transaction, type)
- **Verify Receipt**: window.open(url)

## Integration Approach:
Since the shared component can't directly call POS-specific functions like CopyInvoice,
we need to pass these as callbacks in the options parameter:

```javascript
showTransactionsModal({
  title: 'Transaction History',
  onCopy: (transaction) => CopyInvoice(transaction.sales_receipt_id, transaction.invoicenumber),
  onRefund: (transaction) => showEnhancedRefundModal(transaction),
  onNewSale: (transaction) => startNewSaleFromTransaction(transaction, null),
  onVerify: (url) => window.open(url, '_blank')
});
```

## Next Steps:
1. Add callback parameters to showTransactionsModal()
2. Update renderTransactionsGrid() with full feature display
3. Implement attachTransactionEventListeners() with callback invocations
4. Update POS.js to pass required callbacks
5. Test all action buttons work correctly
6. Remove deprecated showTransactionsModal_LOCAL_DEPRECATED from POS.js
7. Re-enable shared component import in POS.js