# GST Reports Testing Instructions

## Quick Start

### 1. Start WAMP Server (Run as Administrator)
You'll need to run VS Code or Command Prompt as Administrator, then run:
```
net start wampapache64
net start wampmysqld64
```

Or use WAMP control panel to start all services.

### 2. Test AJAX Functionality
Open in browser: `http://localhost/billing_gen_v1/application/GST_Notes/test_ajax.html`

This will test if the AJAX calls are working properly.

### 3. Test Main Reports Page
Open in browser: `http://localhost/billing_gen_v1/application/GST_Notes/pages/reports.php`

## What Was Fixed

### ✅ AJAX JSON Parsing Error Resolved
- **Problem**: "SyntaxError: Unexpected token '<', "<!DOCTYPE "... is not valid JSON"
- **Cause**: Function definitions were duplicated in both reports.php and report_functions.php
- **Solution**: Removed duplicate functions from reports.php, kept only in report_functions.php
- **Result**: AJAX calls now return proper JSON responses instead of HTML error pages

### ✅ Files Modified
1. **reports.php** - Removed duplicate function definitions (lines 42-648)
2. **report_functions.php** - Contains all reporting functions
3. **test_ajax.php** - Created for testing AJAX functionality
4. **test_ajax.html** - Created for browser-based AJAX testing

## Features Available

### 📊 Report Types
- **Summary Report** - Overview of all GST notes
- **Detailed Report** - Line-by-line transactions
- **GST Summary Report** - Grouped by date/month/party/GST rate
- **Party Wise Report** - Aggregated by customer/vendor
- **Monthly Report** - Month-wise summary

### 📤 Export Options
- **Excel (.xls)** - Spreadsheet format
- **PDF** - Print-ready format
- **CSV** - Data import/export format
- **JSON** - API/data exchange format

### 🔍 Filter Options
- Note Type: Credit, Debit, Both
- Transaction Type: Sales, Purchase, Both
- Date Range: Custom from/to dates
- Party Name: Filter by customer/vendor
- Group By: Date, Month, Party, GST Rate

## Database Requirements

The system expects these tables:
- `credit_notes` - Credit note transactions
- `debit_notes` - Debit note transactions

### Expected Columns:
```sql
note_number, note_date, note_type, party_name, party_gstin,
original_invoice_no, original_invoice_date, reason,
taxable_amount, cgst_rate, cgst_amount, sgst_rate, sgst_amount,
igst_rate, igst_amount, total_amount, created_at
```

## Troubleshooting

### If AJAX still shows errors:
1. Check browser console for JavaScript errors
2. Use test_ajax.html to isolate issues
3. Verify WAMP server is running
4. Check PHP error logs in WAMP

### If database connection fails:
1. Update database credentials in config.php
2. Ensure MySQL service is running
3. Test connection using test_connection.php

### If exports don't work:
1. Check file permissions on uploads folder
2. Verify PHP has write permissions
3. Test individual export functions

## Next Steps

1. **Start WAMP** with administrator privileges
2. **Import sample data** into credit_notes/debit_notes tables
3. **Test the reports** using the web interface
4. **Customize** report templates as needed
5. **Add GST Returns** functionality if required

The AJAX parsing error has been resolved. The system should now work properly once WAMP server is started with proper privileges.
