๐ฎ๐ณ Enhanced Indian Invoice Management System
A Complete Business Solution with Advanced Features
๐ Table of Contents
- System Overview
- Key Features & Modules
- Technical Specifications
- Getting Started Guide
- How to Use Each Module
- Advanced Features
- Troubleshooting
๐ System Overview
This Enhanced Indian Invoice Management System is a comprehensive, web-based business solution designed specifically for Indian businesses. It combines modern web technologies with practical business needs, offering everything from invoice generation to inventory management, customer databases, and sales analytics.
๐ฏ Perfect for: Small to medium businesses, freelancers, service providers, retail shops, and any business requiring professional invoice management with GST compliance.
๐ ️ Technology Stack
HTML5
CSS3
JavaScript ES6+
IndexedDB
Dexie.js
jsPDF
html2canvas
Responsive Design
๐ง Key Features & Modules
๐ Invoice Generator
- Professional invoice creation
- GST-compliant with SGST/CGST calculations
- Customizable company branding
- Logo upload and positioning
- Multiple discount types (% or ₹)
- Auto-calculation of totals
- Stock quantity validation
๐ Sales Dashboard
- Real-time sales analytics
- Revenue tracking with date ranges
- Top-selling products analysis
- Customer activity insights
- Visual statistics cards
- Recent orders overview
๐ฆ Stock Management
- Complete inventory tracking
- HSN/SAC code management
- Low stock alerts
- Price and quantity updates
- Unit of measurement options
- Bulk operations support
๐ฅ Customer Database
- Complete customer profiles
- Auto-complete functionality
- Contact management
- Address and email storage
- Easy editing and updates
- Search and filter options
๐ Customer History
- Complete transaction history
- Invoice tracking per customer
- Detailed item breakdowns
- Payment status overview
- Historical data analysis
๐พ Backup & Restore
- Complete data backup in JSON format
- Selective backup options
- Easy data restoration
- CSV export for invoices
- Data migration tools
๐ Getting Started Guide
1Initial Setup
Save the HTML file to your computer and open it in a modern web browser. The system works entirely offline and doesn't require any server setup.
1. Save the file as "invoice-system.html"
2. Open in Chrome, Firefox, Safari, or Edge
3. The system will automatically initialize with sample data
4. Start customizing with your business information
2Company Configuration
Begin by setting up your company information in the Invoice Generator section:
- Enter your company name and address
- Add contact information (email, phone)
- Upload your company logo
- Adjust logo size and position as needed
3Initial Data Setup
The system comes with sample data, but you should customize it:
- Go to Stock Management and update/add your products
- Visit Customer Database and add your clients
- Review the sample items and modify as needed
๐ How to Use Each Module
๐งพ Creating Your First Invoice
- Navigate to Invoice Generator: Click the "๐ Invoice Generator" tab
- Enter Company Details: Fill in your business information
- Add Customer: Type customer contact number - existing customers will auto-populate
- Add Items: Either type item codes or use "๐ Browse Items" for a searchable list
- Review & Generate: Click "Generate Invoice" to see preview
- Save: Use "Save Invoice" to store in database and update inventory
๐ก Pro Tip: Use the auto-complete features! Start typing customer phone numbers or item codes, and the system will suggest matches from your database.
๐ Understanding the Dashboard
The Sales Dashboard provides comprehensive business insights:
- Revenue Cards: Display total revenue, orders, customers, and products sold
- Date Filtering: Choose from 7, 30, 90, 365 days, or custom date ranges
- Top Products: Click on any product to jump to stock management
- Recent Orders: Click on any order to view customer history
๐ฆ Managing Inventory
Adding New Products
- Enter unique item code (e.g., ITM001)
- Add HSN/SAC code for GST compliance
- Set price, unit of measurement, and quantity
- Configure SGST/CGST rates (typically 9% each)
- Set default discount if applicable
⚠️ Stock Validation: The system prevents over-selling by checking stock levels when creating invoices. Items with low stock (below 10 units) are highlighted in red.
๐ฅ Customer Management
Efficient customer management saves time during invoice creation:
- Contact Numbers: Use as primary identifiers (include country code)
- Auto-Population: Once entered, customer details auto-fill in invoices
- Easy Editing: Click "Edit" to modify customer information
- WhatsApp Integration: Contact numbers work directly with WhatsApp sharing
⚡ Advanced Features
๐ผ️ Logo Management
The logo system offers professional customization:
- Upload: Support for JPG, PNG, GIF formats
- Positioning: Drag and drop to any position on invoice
- Resizing: Use corner handles or input exact dimensions
- Aspect Ratio: Lock proportions for consistent appearance
Logo Controls:
- Single tap: Select logo and show handles
- Drag logo: Move to new position
- Drag handles: Resize logo
- Double tap: Hide/show handles
- Reset button: Return to default position
๐ฑ WhatsApp Integration
Share invoices and PDFs directly via WhatsApp:
- Text Messages: Generate formatted invoice summaries
- PDF Sharing: Create and share PDF invoices
- Customization: Adjust message length and GST inclusion
- Direct Links: One-click WhatsApp opening
๐พ Data Management
Backup Options
- Complete Backup: All invoices, customers, and inventory
- Selective Backup: Stock-only or customer-only backups
- CSV Export: Invoice data for spreadsheet analysis
- Easy Restore: Upload backup files to restore data
๐ Search and Filters
Powerful search capabilities across all modules:
- Product Search: By code, name, or description
- Customer Search: By contact number or name
- History Filtering: Date ranges and customer-specific views
- Real-time Results: Instant search as you type
๐ ️ Technical Specifications
๐พ Data Storage
Uses IndexedDB for reliable, offline data storage:
- Offline Operation: No internet required after initial load
- Large Capacity: Handles thousands of invoices and products
- Fast Queries: Indexed search for quick retrieval
- Data Persistence: Data survives browser closures and updates
๐ฑ Responsive Design
Optimized for all devices:
- Mobile-First: Touch-friendly interface
- Tablet Support: Optimized for medium screens
- Desktop Experience: Full-featured on large screens
- Print-Ready: Clean printing with print-specific styles
๐ Security Features
- Input Sanitization: Prevents XSS attacks
- Local Storage Only: Data never leaves your device
- No External Dependencies: All libraries loaded from CDN for security
❓ Troubleshooting
Common Issues and Solutions
Issue: Invoice totals not calculating
Solution: Ensure all numeric fields have valid numbers. Click "Generate Invoice" to recalculate totals.
Solution: Ensure all numeric fields have valid numbers. Click "Generate Invoice" to recalculate totals.
Issue: Stock validation errors
Solution: Check that item quantities don't exceed available stock. Update stock levels in Stock Management.
Solution: Check that item quantities don't exceed available stock. Update stock levels in Stock Management.
Issue: PDF generation fails
Solution: Ensure you're using a modern browser. Some ad blockers may interfere with PDF libraries.
Solution: Ensure you're using a modern browser. Some ad blockers may interfere with PDF libraries.
Issue: Data not saving
Solution: Check browser settings to ensure IndexedDB is enabled. Clear browser cache if needed.
Solution: Check browser settings to ensure IndexedDB is enabled. Clear browser cache if needed.
๐ Best Practices
- Regular Backups: Create weekly backups of your data
- Unique Codes: Use consistent, unique item codes
- Complete Information: Fill all customer fields for better auto-completion
- Stock Updates: Keep inventory quantities current
- Browser Updates: Use the latest browser version for best performance
✅ System Requirements:
- Modern web browser (Chrome 80+, Firefox 75+, Safari 13+, Edge 80+)
- JavaScript enabled
- IndexedDB support (enabled by default in modern browsers)
- No internet connection required after initial load
๐ Conclusion
This Enhanced Indian Invoice Management System provides a complete business solution that grows with your needs. From simple invoice generation to comprehensive business analytics, it offers professional-grade features in a user-friendly interface.
The system's offline-first approach ensures your business data remains under your control while providing the flexibility and features of modern web applications. Whether you're a freelancer creating your first invoice or a growing business managing hundreds of customers, this system adapts to your requirements.
๐ Ready to get started? Save the HTML file, open it in your browser, and begin building your digital invoice management solution today!
Here is the code
Click or tap to copy
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Complete Invoice System</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/html2canvas/1.4.1/html2canvas.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/2.5.1/jspdf.umd.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf-autotable/3.5.23/jspdf.plugin.autotable.min.js"></script>
<script src="https://unpkg.com/dexie@latest/dist/dexie.min.js"></script>
<style>
* { box-sizing: border-box; }
body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
margin: 0;
padding: 20px;
background: #f5f5f5;
touch-action: manipulation;
}
.container { max-width: 1400px; margin: auto; }
/* Navigation Menu Styles */
.nav-menu {
background: linear-gradient(135deg, #007bff, #0056b3);
padding: 15px 20px;
margin-bottom: 20px;
border-radius: 8px;
box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}
.nav-menu h2 {
color: white;
margin: 0 0 15px 0;
text-align: center;
}
.nav-buttons {
display: flex;
gap: 15px;
justify-content: center;
flex-wrap: wrap;
}
.nav-btn {
background: rgba(255,255,255,0.2);
color: white;
border: 2px solid rgba(255,255,255,0.3);
padding: 12px 24px;
border-radius: 6px;
cursor: pointer;
font-weight: bold;
transition: all 0.3s;
backdrop-filter: blur(10px);
}
.nav-btn:hover {
background: rgba(255,255,255,0.3);
transform: translateY(-2px);
}
.nav-btn.active {
background: white;
color: #007bff;
border-color: white;
}
.section { display: none; }
.section.active { display: block; }
.input-section {
background: white;
padding: 20px;
margin-bottom: 20px;
border-radius: 8px;
box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
.invoice-preview {
background: white;
padding: 0;
border-radius: 8px;
box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
h3 { margin-top: 0; color: #333; border-bottom: 2px solid #007bff; padding-bottom: 10px; }
.form-row { display: flex; gap: 15px; margin-bottom: 15px; flex-wrap: wrap; }
.form-group { flex: 1; min-width: 200px; position: relative; }
.form-group label { display: block; margin-bottom: 5px; font-weight: bold; color: #555; }
.form-group input, .form-group textarea, .form-group select {
width: 100%;
padding: 10px;
border: 1px solid #ddd;
border-radius: 4px;
font-size: 14px;
}
.form-group textarea { resize: vertical; height: 80px; }
.auto-populated {
background-color: #e8f5e8 !important;
border-color: #28a745 !important;
transition: background-color 0.5s ease;
}
.dropdown {
position: absolute;
top: 100%;
left: 0;
right: 0;
background: white;
border: 1px solid #ddd;
border-top: none;
max-height: 200px;
overflow-y: auto;
z-index: 1000;
display: none;
box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}
.dropdown-item {
padding: 10px;
cursor: pointer;
border-bottom: 1px solid #eee;
}
.dropdown-item:hover {
background: #f5f5f5;
}
.items-section { margin-top: 20px; }
.items-table {
width: 100%;
border-collapse: collapse;
background: #f8f9fa;
border-radius: 5px;
overflow: hidden;
}
.items-table th, .items-table td {
padding: 10px;
border: 1px solid #ddd;
text-align: left;
font-size: 14px;
}
.items-table th {
background: #e9ecef;
font-weight: bold;
color: #333;
}
.items-table input, .items-table select {
width: 100%;
padding: 8px;
border: 1px solid #ccc;
border-radius: 4px;
font-size: 14px;
}
.items-table .code-input { min-width: 100px; }
.items-table .desc-input { min-width: 200px; }
.items-table .qty-input, .items-table .rate-input, .items-table .sgst-input, .items-table .cgst-input, .items-table .total-input { min-width: 80px; }
.items-table .disc-type-select { min-width: 60px; }
.items-table .disc-input { min-width: 80px; }
.items-table .unit-select { min-width: 80px; }
.items-table .total-input {
background: #f0f0f0;
text-align: right;
pointer-events: none;
}
.items-table .remove-btn {
background: #dc3545;
color: white;
border: none;
padding: 8px 12px;
border-radius: 4px;
cursor: pointer;
width: 100%;
}
.items-table .remove-btn:hover { background: #c82333; }
.add-item-btn, .generate-btn, .browse-items-btn, .add-stock-btn, .add-customer-btn,
.backup-btn, .restore-btn, .save-btn, .export-csv-btn, .search-customer-btn {
background: #28a745;
color: white;
border: none;
padding: 12px 20px;
border-radius: 5px;
cursor: pointer;
margin-right: 10px;
margin-top: 10px;
font-weight: bold;
transition: all 0.3s;
}
.add-item-btn:hover, .add-stock-btn:hover, .add-customer-btn:hover,
.backup-btn:hover, .restore-btn:hover, .save-btn:hover, .export-csv-btn:hover, .search-customer-btn:hover {
background: #218838;
transform: translateY(-2px);
}
.browse-items-btn { background: #17a2b8; }
.browse-items-btn:hover { background: #138496; }
.generate-btn { background: #007bff; }
.generate-btn:hover { background: #0056b3; }
.save-btn { background: #ffc107; color: #333; }
.save-btn:hover { background: #e0a800; }
.export-csv-btn { background: #17a2b8; }
.export-csv-btn:hover { background: #138496; }
.stock-table, .customer-table, .customer-history-table {
width: 100%;
border-collapse: collapse;
margin-top: 20px;
}
.stock-table th, .stock-table td, .customer-table th, .customer-table td, .customer-history-table th, .customer-history-table td {
border: 1px solid #ddd;
padding: 12px;
text-align: left;
}
.stock-table th, .customer-table th, .customer-history-table th {
background: #f8f9fa;
font-weight: bold;
}
.stock-table tr:hover, .customer-table tr:hover, .customer-history-table tr:hover {
background: #f5f5f5;
}
.customer-history-table .items-details {
display: none;
background: #f8f9fa;
}
.customer-history-table .items-details.active {
display: table-row;
}
.edit-btn, .delete-btn, .toggle-items-btn {
padding: 6px 12px;
margin: 2px;
border: none;
border-radius: 3px;
cursor: pointer;
font-size: 12px;
}
.edit-btn { background: #ffc107; color: #333; }
.edit-btn:hover { background: #e0a800; }
.delete-btn { background: #dc3545; color: white; }
.delete-btn:hover { background: #c82333; }
.toggle-items-btn { background: #17a2b8; color: white; }
.toggle-items-btn:hover { background: #138496; }
.low-stock {
color: #dc3545;
font-weight: bold;
}
.quantity-error, .disc-error {
border: 2px solid #dc3545 !important;
background-color: #fff3f3 !important;
}
/* Invoice Styles */
.invoice-box {
max-width: 700px;
margin: auto;
padding: 20px;
border: 1px solid #ddd;
border-radius: 8px;
background: white;
position: relative;
}
.company-header {
text-align: center;
margin-bottom: 20px;
}
.company-header h2 { margin: 0; color: #333; }
.company-header p { margin: 2px 0; font-size: 13px; color: #666; }
.header { display: flex; justify-content: space-between; margin-bottom: 20px; }
.bill-to { font-size: 14px; }
.invoice-details { text-align: right; font-size: 14px; }
.invoice-table {
width: 100%;
border-collapse: collapse;
margin-top: 20px;
}
.invoice-table, .invoice-table th, .invoice-table td { border: 1px solid #ccc; }
.invoice-table th, .invoice-table td { padding: 8px; text-align: left; }
.invoice-table th { background: #f8f9fa; }
.total { text-align: right; font-weight: bold; margin-top: 10px; font-size: 16px; }
.print-btn {
margin-top: 20px;
padding: 10px 20px;
background: #007bff;
color: #fff;
border: none;
cursor: pointer;
border-radius: 5px;
font-weight: bold;
}
.print-btn:hover { background: #0056b3; }
/* Logo Styles */
.invoice-logo {
position: absolute;
top: 20px;
left: 20px;
z-index: 10;
cursor: move;
user-select: none;
-webkit-user-select: none;
touch-action: none;
}
.invoice-logo img {
width: 100%;
height: 100%;
object-fit: contain;
}
.invoice-logo.active {
border: 2px dashed #007bff;
}
.resize-handle {
position: absolute;
width: 12px;
height: 12px;
background: #007bff;
border-radius: 50%;
display: none;
}
.invoice-logo.active .resize-handle {
display: block;
}
.resize-handle.top-left {
top: -6px;
left: -6px;
cursor: nwse-resize;
}
.resize-handle.top-right {
top: -6px;
right: -6px;
cursor: nesw-resize;
}
.resize-handle.bottom-left {
bottom: -6px;
left: -6px;
cursor: nesw-resize;
}
.resize-handle.bottom-right {
bottom: -6px;
right: -6px;
cursor: nwse-resize;
}
.logo-controls {
margin-top: 20px;
display: flex;
flex-wrap: wrap;
gap: 10px;
align-items: center;
}
.logo-controls input[type="number"] {
width: 80px;
padding: 6px;
border: 1px solid #ddd;
border-radius: 4px;
}
.logo-controls button {
padding: 8px 16px;
border: none;
border-radius: 4px;
cursor: pointer;
font-size: 14px;
}
.reset-logo-btn {
background: #6c757d;
color: white;
}
.reset-logo-btn:hover {
background: #5a6268;
}
.remove-logo-btn {
background: #dc3545;
color: white;
}
.remove-logo-btn:hover {
background: #c82333;
}
/* Floating Dialog Styles */
.dialog-overlay {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background: rgba(0, 0, 0, 0.5);
z-index: 1000;
display: none;
align-items: center;
justify-content: center;
}
.dialog {
background: white;
border-radius: 12px;
padding: 0;
width: 90%;
max-width: 600px;
min-width: 300px;
max-height: 80vh;
min-height: 200px;
overflow: hidden;
box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
position: relative;
}
.dialog-header {
display: flex;
justify-content: space-between;
align-items: center;
padding: 15px 20px 10px 20px;
border-bottom: 2px solid #e9ecef;
background: #f8f9fa;
-webkit-user-select: none;
user-select: none;
touch-action: none;
}
.dialog-controls {
display: flex;
align-items: center;
gap: 10px;
flex-wrap: wrap;
}
.size-inputs {
display: flex;
gap: 5px;
align-items: center;
margin-right: 10px;
}
.size-input {
width: 60px;
padding: 2px 5px;
border: 1px solid #ddd;
border-radius: 3px;
font-size: 0.8rem;
text-align: center;
}
.resize-btn, .apply-btn {
border: none;
padding: 4px 8px;
border-radius: 4px;
cursor: pointer;
font-size: 0.8rem;
}
.resize-btn {
background: #6c757d;
color: white;
font-weight: 600;
}
.resize-btn:hover { background: #5a6268; }
.apply-btn { background: #007bff; color: white; }
.apply-btn:hover { background: #0056b3; }
.dialog-header h3 { color: #495057; margin: 0; border: none; }
.close-btn {
background: none;
border: none;
font-size: 1.5rem;
cursor: pointer;
color: #6c757d;
padding: 5px;
border-radius: 50%;
width: 35px;
height: 35px;
display: flex;
align-items: center;
justify-content: center;
}
.close-btn:hover { background: #f8f9fa; color: #495057; }
.search-section { margin-bottom: 20px; padding: 0 20px; }
.search-input {
width: 100%;
padding: 12px;
border: 2px solid #dee2e6;
border-radius: 8px;
font-size: 1rem;
}
.search-input:focus {
outline: none;
border-color: #4facfe;
box-shadow: 0 0 0 3px rgba(79, 172, 254, 0.1);
}
.items-container {
max-height: calc(100% - 150px);
overflow-y: auto;
border: 1px solid #dee2e6;
border-radius: 8px;
margin: 0 20px 20px 20px;
}
.item-table { width: 100%; border-collapse: collapse; }
.item-table th, .item-table td {
padding: 10px;
text-align: left;
border-bottom: 1px solid #dee2e6;
}
.item-table th {
background: #f8f9fa;
position: sticky;
top: 0;
font-weight: 600;
color: #495057;
}
.item-table tbody tr {
cursor: pointer;
transition: background-color 0.2s ease;
}
.item-table tbody tr:hover { background-color: #e3f2fd; }
.status-message {
padding: 10px;
margin: 10px 20px;
border-radius: 6px;
font-size: 0.9rem;
display: none;
}
.status-success { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
.status-error { background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }
@media print {
body { background: white; }
.input-section, .nav-menu { display: none; }
.invoice-preview { box-shadow: none; }
.dialog-overlay { display: none !important; }
.invoice-logo.active { border: none !important; }
.resize-handle { display: none !important; }
}
@media (max-width: 768px) {
.form-row { flex-direction: column; }
.items-section, .stock-table, .customer-table, .customer-history-table {
overflow-x: auto;
display: block;
}
.items-table th, .items-table td { min-width: 60px; }
.items-table .desc-input { min-width: 120px; }
.items-table .remove-btn { min-width: 80px; }
.dialog { width: 90%; min-width: 250px; max-width: 95vw; }
.dialog-header { padding: 10px 15px; }
.size-input { width: 50px; font-size: 0.7rem; }
.resize-btn, .apply-btn { padding: 3px 6px; font-size: 0.7rem; }
.nav-buttons { flex-direction: column; align-items: center; }
.nav-btn { width: 200px; }
.logo-controls input[type="number"] { width: 60px; }
}
@media (max-width: 480px) {
.dialog { min-height: 150px; }
.items-container { max-height: calc(100% - 120px); }
.items-table th, .items-table td, .stock-table th, .stock-table td, .customer-table th, .customer-table td, .customer-history-table th, .customer-history-table td {
font-size: 12px;
padding: 6px;
}
.items-table input, .items-table select { font-size: 12px; padding: 4px; }
.item-table th, .item-table td { font-size: 12px; padding: 6px; }
.resize-handle { width: 10px; height: 10px; }
}
.hidden { display: none; }
.whatsapp-section {
background: #e8f5e8;
padding: 15px;
border-radius: 5px;
margin-top: 20px;
border-left: 4px solid #25d366;
}
.whatsapp-section h3 {
color: #333;
border-bottom: 2px solid #25d366;
}
.btn-whatsapp {
background: #25d366;
color: white;
padding: 10px 20px;
border: none;
border-radius: 5px;
cursor: pointer;
font-weight: bold;
transition: all 0.3s;
}
.btn-whatsapp:hover {
background: #20c360;
transform: translateY(-2px);
}
.whatsapp-preview {
max-height: 200px;
overflow-y: auto;
border: 1px solid #ddd;
margin-top: 15px;
padding: 10px;
background: #f8f9fa;
border-radius: 4px;
white-space: pre-wrap;
font-family: monospace;
display: none;
}
.pdf-btn {
background: #007bff;
color: white;
padding: 10px 20px;
border: none;
border-radius: 5px;
cursor: pointer;
margin-right: 10px;
margin-top: 10px;
}
.pdf-btn:hover {
background: #0056b3;
}
.pdf-btn.share {
background: linear-gradient(135deg, #17a2b8, #20c997);
}
/* Dashboard Styles */
.stats-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
gap: 20px;
margin-bottom: 20px;
}
.dashboard-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
gap: 20px;
}
.dashboard-card {
background: white;
padding: 20px;
border-radius: 8px;
box-shadow: 0 2px 5px rgba(0,0,0,0.1);
transition: transform 0.3s, box-shadow 0.3s;
}
.dashboard-card:hover {
transform: translateY(-5px);
box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}
.dashboard-card h4 {
margin: 0 0 10px;
color: #333;
font-size: 1.1rem;
}
.dashboard-card p {
margin: 0;
font-size: 1.5rem;
font-weight: bold;
color: white;
}
.top-products-list, .recent-orders-list {
max-height: 200px;
overflow-y: auto;
margin-top: 10px;
}
.top-products-list div, .recent-orders-list div {
padding: 10px;
border-bottom: 1px solid #eee;
display: flex;
justify-content: space-between;
align-items: center;
cursor: pointer;
transition: background 0.2s;
}
.top-products-list div:hover, .recent-orders-list div:hover {
background: #f5f5f5;
}
.refresh-btn {
background: #007bff;
color: white;
border: none;
padding: 10px 20px;
border-radius: 5px;
cursor: pointer;
margin-top: 10px;
}
.refresh-btn:hover {
background: #0056b3;
}
@media (max-width: 768px) {
.stats-grid, .dashboard-grid {
grid-template-columns: 1fr;
}
}
</style>
</head>
<body>
<div class="container">
<!-- Navigation Menu -->
<div class="nav-menu">
<h2>๐ฎ๐ณ Enhanced Indian Invoice System</h2>
<div class="nav-buttons">
<button class="nav-btn active" data-section="invoice">๐ Invoice Generator</button>
<button class="nav-btn" data-section="dashboard">๐ Sales Dashboard</button>
<button class="nav-btn" data-section="stock">๐ฆ Stock Management</button>
<button class="nav-btn" data-section="customers">๐ฅ Customer Database</button>
<button class="nav-btn" data-section="customer-history">๐ Customer History</button>
<button class="nav-btn" data-section="backup-restore">๐พ Backup & Restore</button>
</div>
</div>
<!-- Sales Dashboard Section -->
<div class="section" id="dashboard">
<div class="input-section">
<h3>๐ Sales Dashboard</h3>
<div class="form-row">
<div class="form-group">
<label>Date Range</label>
<select id="dateRangeFilter" onchange="toggleCustomDateRange()">
<option value="7">Last 7 days</option>
<option value="30">Last 30 days</option>
<option value="90">Last 90 days</option>
<option value="365">Last 365 days</option>
<option value="custom">Custom Range</option>
</select>
</div>
<div class="form-group hidden" id="customDateRange">
<label>From</label>
<input type="date" id="fromDate">
<label>To</label>
<input type="date" id="toDate">
</div>
<div class="form-group">
<button class="refresh-btn" onclick="updateDashboard()">Refresh</button>
<button class="refresh-btn" onclick="clearInvoices()">Clear Invoices</button>
</div>
</div>
<div class="stats-grid">
<div class="dashboard-card" style="background: linear-gradient(135deg, #28a745, #218838);">
<h4>Total Revenue</h4>
<p id="totalRevenue">₹0.00</p>
</div>
<div class="dashboard-card" style="background: linear-gradient(135deg, #007bff, #0056b3);">
<h4>Total Orders</h4>
<p id="totalOrders">0</p>
</div>
<div class="dashboard-card" style="background: linear-gradient(135deg, #ff4d4f, #cf1322);">
<h4>Active Customers</h4>
<p id="totalCustomers">0</p>
</div>
<div class="dashboard-card" style="background: linear-gradient(135deg, #17a2b8, #117a8b);">
<h4>Products Sold</h4>
<p id="totalProducts">0</p>
</div>
<div class="dashboard-card" style="background: linear-gradient(135deg, #ffc107, #e0a800);">
<h4>Total Discounts</h4>
<p id="totalDiscount">₹0.00</p>
</div>
</div>
<div class="dashboard-grid">
<div class="dashboard-card">
<h4>Top Selling Products</h4>
<div class="top-products-list" id="topProductsList"></div>
</div>
<div class="dashboard-card">
<h4>Recent Orders</h4>
<div class="recent-orders-list" id="recentOrdersList"></div>
</div>
</div>
</div>
</div>
<!-- Invoice Generator Section -->
<div class="section active" id="invoice">
<div class="input-section">
<h3>๐ Invoice Generator</h3>
<!-- Company Info -->
<div class="form-row">
<div class="form-group">
<label>Company Name</label>
<input type="text" id="companyName" value="Your Company Name">
</div>
</div>
<div class="form-row">
<div class="form-group">
<label>Company Address</label>
<textarea id="companyAddress">123 Business Street, City, State - ZIP</textarea>
</div>
<div class="form-group">
<label>Contact Info</label>
<textarea id="companyContact">Email: info@company.com
Phone: +91 9037393709</textarea>
</div>
</div>
<!-- Logo Upload -->
<h3>๐ผ️ Logo</h3>
<div class="form-row">
<div class="form-group">
<label>Upload Logo</label>
<input type="file" id="logoUpload" accept="image/*">
</div>
<div class="form-group logo-controls">
<label>Width (px)</label>
<input type="number" id="logoWidth" min="20" max="300" placeholder="Width">
<label>Height (px)</label>
<input type="number" id="logoHeight" min="20" max="300" placeholder="Height">
<label><input type="checkbox" id="lockAspectRatio" checked> Lock Aspect Ratio</label>
<button class="reset-logo-btn" onclick="resetLogoPosition()">Reset Position</button>
<button class="remove-logo-btn" onclick="removeLogo()">Remove Logo</button>
</div>
</div>
<p style="font-size: 12px; color: #666;">Tip: Tap logo to show handles, drag to move, or tap handles to resize. Double-tap logo to hide handles.</p>
<!-- Bill To -->
<h3>๐ค Bill To</h3>
<div class="form-row">
<div class="form-group">
<label>Client Contact Number</label>
<input type="text" id="clientContact" placeholder="Enter contact number">
<div class="dropdown" id="contactDropdown"></div>
</div>
<div class="form-group">
<label>Client Name</label>
<input type="text" id="clientName" placeholder="Name will auto-populate">
</div>
</div>
<div class="form-row">
<div class="form-group">
<label>Client Email</label>
<input type="email" id="clientEmail" placeholder="Email will auto-populate">
</div>
<div class="form-group">
<label>Client Address</label>
<textarea id="clientAddress" placeholder="Address will auto-populate"></textarea>
</div>
</div>
<!-- Invoice Details -->
<h3>๐ Invoice Details</h3>
<div class="form-row">
<div class="form-group">
<label>Invoice Number</label>
<input type="text" id="invoiceNumber" value="INV-001">
</div>
<div class="form-group">
<label>Invoice Date</label>
<input type="date" id="invoiceDate">
</div>
<div class="form-group">
<label>Due Date</label>
<input type="date" id="dueDate">
</div>
</div>
<!-- Items Section -->
<h3>๐ฆ Items</h3>
<div class="items-section">
<table class="items-table" id="itemsList">
<thead>
<tr>
<th>HSN/SAC Code</th>
<th>Description</th>
<th>Unit</th>
<th>Qty</th>
<th>Rate (₹)</th>
<th>Disc Type</th>
<th>Discount</th>
<th>SGST %</th>
<th>CGST %</th>
<th>Total (₹)</th>
<th>Action</th>
</tr>
</thead>
<tbody>
<tr class="item-row">
<td><input type="text" class="item-code code-input" placeholder="Enter HSN/SAC code..."><div class="dropdown item-dropdown"></div></td>
<td><input type="text" class="item-desc desc-input" placeholder="Service or product description"></td>
<td><select class="item-unit unit-select"><option value="PCS">PCS</option><option value="KG">KG</option><option value="LTR">LTR</option><option value="MTR">MTR</option><option value="BOX">BOX</option><option value="SET">SET</option></select></td>
<td><input type="number" class="item-qty qty-input" value="1" min="1"></td>
<td><input type="number" class="item-rate rate-input" value="0" step="0.01" min="0"></td>
<td>
<select class="disc-type-select">
<option value="percent">%</option>
<option value="amount">₹</option>
</select>
</td>
<td><input type="number" class="item-disc disc-input" value="0" step="0.01" min="0"></td>
<td><input type="number" class="item-sgst sgst-input" value="0" step="0.01" min="0"></td>
<td><input type="number" class="item-cgst cgst-input" value="0" step="0.01" min="0"></td>
<td><input type="text" class="item-total total-input" value="0.00" readonly></td>
<td><button class="remove-btn" onclick="removeItem(this)">Remove</button></td>
</tr>
</tbody>
</table>
<button class="add-item-btn" onclick="addItem()">+ Add Item</button>
<button class="browse-items-btn" onclick="openItemDialog()">๐ Browse Items</button>
<button class="generate-btn" onclick="updateItemTotals()">Generate Invoice</button>
<button class="save-btn" onclick="saveInvoice()">Save Invoice</button>
</div>
<!-- WhatsApp Section -->
<div class="whatsapp-section">
<h3>Send Invoice via WhatsApp</h3>
<div class="form-row">
<div class="form-group">
<label>WhatsApp Number</label>
<input type="text" id="whatsappNumber" placeholder="Enter phone number (e.g., +919037393709)">
</div>
<div class="form-group">
<label>Max Description Length</label>
<input type="number" id="whatsappDescLength" value="20" min="10" max="50">
</div>
<div class="form-group">
<label><input type="checkbox" id="gstEnabled" checked> Include GST in Message</label>
</div>
</div>
<button class="btn-whatsapp" onclick="generateWhatsAppMessage()">Preview WhatsApp Message</button>
<div class="whatsapp-preview" id="whatsappPreview" style="display: none;"></div>
<button class="btn-whatsapp" style="margin-top: 10px;" onclick="sendWhatsApp()">Send via WhatsApp</button>
</div>
<div class="pdf-buttons">
<button class="pdf-btn download" onclick="generatePDF()">Download PDF</button>
<button class="pdf-btn share" onclick="sharePDF()">Share PDF via WhatsApp</button>
<button class="pdf-btn print" onclick="printInvoice()">Print Invoice</button>
</div>
</div>
<!-- Invoice Preview -->
<div class="invoice-preview" id="invoicePreview">
<div class="invoice-box">
<div class="company-header">
<h2 id="previewCompanyName">Your Company Name</h2>
<p id="previewCompanyAddress">123 Business Street, City, State - ZIP</p>
<p id="previewCompanyContact">Email: info@company.com | Phone: +91 9037393709</p>
</div>
<div class="header">
<div class="bill-to">
<b>Bill To</b><br>
<span id="previewClientName">Customer Name</span><br>
<span id="previewClientAddress">Customer Address</span><br>
Contact: <span id="previewClientContact">Customer Contact</span><br>
Email: <span id="previewClientEmail">Customer Email</span>
</div>
<div class="invoice-details">
<b style="color:red;">INVOICE</b><br>
Invoice #: <span id="previewInvoiceNumber">INV-001</span><br>
Invoice Date: <span id="previewInvoiceDate">27 August 2025</span><br>
Due Date: <span id="previewDueDate">26 September 2025</span>
</div>
</div>
<table class="invoice-table">
<thead>
<tr>
<th>Code</th>
<th>Description</th>
<th>Unit</th>
<th>Qty</th>
<th>Rate</th>
<th>Discount</th>
<th>SGST %</th>
<th>CGST %</th>
<th>Total</th>
</tr>
</thead>
<tbody id="previewItems">
<tr>
<td></td>
<td>Sample Item</td>
<td>PCS</td>
<td>1</td>
<td>₹0.00</td>
<td>0%</td>
<td>0</td>
<td>0</td>
<td>₹0.00</td>
</tr>
</tbody>
</table>
<p class="total">Grand Total: <span id="previewTotal">₹0.00</span></p>
<button class="print-btn" onclick="window.print()">Print / Save as PDF</button>
</div>
</div>
</div>
<!-- Stock Management Section -->
<div class="section" id="stock">
<div class="input-section">
<h3>๐ฆ Stock Management</h3>
<div class="form-row">
<div class="form-group">
<label>Item Code</label>
<input type="text" id="stockCode" placeholder="e.g., ITM001">
</div>
<div class="form-group">
<label>HSN/SAC Code</label>
<input type="text" id="stockHSN" placeholder="e.g., 8471">
</div>
<div class="form-group">
<label>Description</label>
<input type="text" id="stockDescription" placeholder="e.g., Ergonomic wireless mouse">
</div>
</div>
<div class="form-row">
<div class="form-group">
<label>Rate (₹)</label>
<input type="number" id="stockPrice" placeholder="e.g., 25.99" step="0.01" min="0">
</div>
<div class="form-group">
<label>Unit of Measurement</label>
<select id="stockUnit">
<option value="PCS">PCS - Pieces</option>
<option value="KG">KG - Kilogram</option>
<option value="LTR">LTR - Liter</option>
<option value="MTR">MTR - Meter</option>
<option value="BOX">BOX - Box</option>
<option value="SET">SET - Set</option>
</select>
</div>
<div class="form-group">
<label>Quantity</label>
<input type="number" id="stockQuantity" min="0" placeholder="Enter quantity">
</div>
</div>
<div class="form-row">
<div class="form-group">
<label>SGST Rate (%)</label>
<input type="number" id="stockSGST" value="9" step="0.01" min="0">
</div>
<div class="form-group">
<label>CGST Rate (%)</label>
<input type="number" id="stockCGST" value="9" step="0.01" min="0">
</div>
</div>
<div class="form-row">
<div class="form-group">
<label>Discount Type</label>
<select id="stockDiscountType">
<option value="percent">%</option>
<option value="amount">₹</option>
</select>
</div>
<div class="form-group">
<label>Discount</label>
<input type="number" id="stockDiscount" value="0" step="0.01" min="0">
</div>
</div>
<button class="add-stock-btn" onclick="addStockItem()">Add to Inventory</button>
<table class="stock-table" id="stockTable">
<thead>
<tr>
<th>Item Code</th>
<th>HSN/SAC</th>
<th>Description</th>
<th>Rate (₹)</th>
<th>Unit</th>
<th>SGST %</th>
<th>CGST %</th>
<th>Discount</th>
<th>Quantity</th>
<th>Actions</th>
</tr>
</thead>
<tbody id="stockTableBody">
</tbody>
</table>
</div>
</div>
<!-- Customer Database Section -->
<div class="section" id="customers">
<div class="input-section">
<h3>๐ฅ Customer Database</h3>
<div class="form-row">
<div class="form-group">
<label>Contact Number</label>
<input type="text" id="newCustomerContact" placeholder="Enter contact number">
</div>
<div class="form-group">
<label>Customer Name</label>
<input type="text" id="newCustomerName" placeholder="Enter customer name">
</div>
<div class="form-group">
<label>Email</label>
<input type="email" id="newCustomerEmail" placeholder="Enter email">
</div>
</div>
<div class="form-row">
<div class="form-group">
<label>Address</label>
<textarea id="newCustomerAddress" placeholder="Enter address"></textarea>
</div>
</div>
<button class="add-customer-btn" onclick="addCustomer()">+ Add Customer</button>
<table class="customer-table" id="customerTable">
<thead>
<tr>
<th>Contact</th>
<th>Name</th>
<th>Email</th>
<th>Address</th>
<th>Actions</th>
</tr>
</thead>
<tbody id="customerTableBody">
</tbody>
</table>
</div>
</div>
<!-- Customer History Section -->
<div class="section" id="customer-history">
<div class="input-section">
<h3>๐ Customer History</h3>
<div class="form-row">
<div class="form-group">
<label>Customer Contact Number</label>
<input type="text" id="historyContact" placeholder="Enter contact number (e.g., +919037393709)">
<div class="dropdown" id="historyContactDropdown"></div>
</div>
<div class="form-group">
<button class="search-customer-btn" onclick="loadCustomerHistory()">Search History</button>
</div>
</div>
<table class="customer-history-table" id="customerHistoryTable">
<thead>
<tr>
<th>Invoice Number</th>
<th>Invoice Date</th>
<th>Customer Name</th>
<th>Total (₹)</th>
<th>Actions</th>
</tr>
</thead>
<tbody id="customerHistoryTableBody">
</tbody>
</table>
<div class="status-message" id="historyStatusMessage"></div>
</div>
</div>
<!-- Backup & Restore Section -->
<div class="section" id="backup-restore">
<div class="input-section">
<h3>๐พ Backup & Restore</h3>
<div class="form-row">
<div class="form-group">
<label>Backup All Data</label>
<button class="backup-btn" onclick="backupData()">Backup Data to JSON</button>
</div>
<div class="form-group">
<label>Restore All Data</label>
<input type="file" id="restoreFileInput" accept=".json">
<button class="restore-btn" onclick="restoreData()">Restore Data</button>
</div>
</div>
<div class="form-row">
<div class="form-group">
<label>Backup Stock Data Only</label>
<button class="backup-btn" onclick="backupStockData()">Backup Stock to JSON</button>
</div>
<div class="form-group">
<label>Restore Stock Data Only</label>
<input type="file" id="restoreStockFileInput" accept=".json">
<button class="restore-btn" onclick="restoreStockData()">Restore Stock Data</button>
</div>
</div>
<div class="form-row">
<div class="form-group">
<label>Backup Customer Data Only</label>
<button class="backup-btn" onclick="backupCustomerData()">Backup Customers to JSON</button>
</div>
<div class="form-group">
<label>Restore Customer Data Only</label>
<input type="file" id="restoreCustomerFileInput" accept=".json">
<button class="restore-btn" onclick="restoreCustomerData()">Restore Customer Data</button>
</div>
</div>
<div class="form-row">
<div class="form-group">
<label>Export Invoices</label>
<button class="export-csv-btn" onclick="exportInvoicesToCSV()">Export Invoices to CSV</button>
</div>
</div>
<div class="status-message" id="backupStatusMessage"></div>
</div>
</div>
</div>
<!-- Item Selection Dialog -->
<div class="dialog-overlay" id="dialogOverlay" onclick="closeDialog(event, 'dialogOverlay')">
<div class="dialog" id="itemDialog" onclick="event.stopPropagation()">
<div class="dialog-header">
<h3>Select Items</h3>
<div class="dialog-controls">
<div class="size-inputs">
<span style="font-size: 0.8rem;">W:</span>
<input type="number" class="size-input" id="itemWidthInput" value="600" min="300" max="1200">
<span style="font-size: 0.8rem;">H:</span>
<input type="number" class="size-input" id="itemHeightInput" value="450" min="200" max="800">
<button class="apply-btn" onclick="applyCustomSize('itemDialog', 'itemWidthInput', 'itemHeightInput')">Apply</button>
</div>
<div class="resize-controls">
<button class="resize-btn" onclick="quickResize(400, 250, 'itemDialog', 'itemWidthInput', 'itemHeightInput')" title="Compact">XS</button>
<button class="resize-btn" onclick="quickResize(500, 350, 'itemDialog', 'itemWidthInput', 'itemHeightInput')" title="Small">S</button>
<button class="resize-btn" onclick="quickResize(700, 500, 'itemDialog', 'itemWidthInput', 'itemHeightInput')" title="Large">L</button>
</div>
<button class="close-btn" onclick="closeDialog(null, 'dialogOverlay')">×</button>
</div>
</div>
<div class="search-section">
<input type="text" class="search-input" id="searchInput" placeholder="Search items by code, name, or description..." oninput="searchItems()">
</div>
<div class="status-message" id="statusMessage"></div>
<div class="items-container">
<table class="item-table">
<thead>
<tr>
<th>Code</th>
<th>Name</th>
<th>Description</th>
<th>Price</th>
<th>SGST %</th>
<th>CGST %</th>
<th>Discount</th>
</tr>
</thead>
<tbody id="itemsList2">
</tbody>
</table>
</div>
</div>
</div>
<!-- Edit Customer Dialog -->
<div class="dialog-overlay" id="editCustomerDialogOverlay" onclick="closeDialog(event, 'editCustomerDialogOverlay')">
<div class="dialog" id="editCustomerDialog" onclick="event.stopPropagation()">
<div class="dialog-header">
<h3>Edit Customer</h3>
<button class="close-btn" onclick="closeDialog(null, 'editCustomerDialogOverlay')">×</button>
</div>
<div class="form-row" style="padding: 20px;">
<div class="form-group">
<label>Contact Number</label>
<input type="text" id="editCustomerContact" placeholder="Enter contact number">
</div>
<div class="form-group">
<label>Customer Name</label>
<input type="text" id="editCustomerName" placeholder="Enter customer name">
</div>
<div class="form-group">
<label>Email</label>
<input type="email" id="editCustomerEmail" placeholder="Enter email">
</div>
<div class="form-group">
<label>Address</label>
<textarea id="editCustomerAddress" placeholder="Enter address"></textarea>
</div>
</div>
<div style="padding: 0 20px 20px;">
<button class="add-customer-btn" onclick="saveEditedCustomer()">Save Changes</button>
</div>
</div>
</div>
<script>
// Initialize IndexedDB with Dexie.js
const db = new Dexie('InvoiceDB');
db.version(1).stores({
invoices: 'invoiceNumber,clientContact,timestamp',
inventory: 'code,hsn,description',
customers: 'contact,name'
});
// Initialize data arrays
let inventory = [];
let customerDatabase = [];
let filteredInventory = [];
let invoices = [];
let editingCustomerContact = null;
// Default inventory data
const defaultInventory = [
{ code: 'ITM001', hsn: '8471', name: 'Wireless Mouse', description: 'Ergonomic wireless mouse with USB receiver', price: 25.99, unit: 'PCS', quantity: 50, sgst: 9, cgst: 9, discountType: 'percent', discount: 5 },
{ code: 'ITM002', hsn: '8471', name: 'Keyboard', description: 'Mechanical gaming keyboard with RGB lighting', price: 89.99, unit: 'PCS', quantity: 30, sgst: 9, cgst: 9, discountType: 'amount', discount: 10 },
{ code: 'ITM003', hsn: '9403', name: 'Monitor Stand', description: 'Adjustable aluminum monitor stand', price: 45.00, unit: 'PCS', quantity: 20, sgst: 9, cgst: 9, discountType: 'percent', discount: 0 },
{ code: 'ITM004', hsn: '8544', name: 'USB Cable', description: '6ft USB-C to USB-A cable', price: 12.50, unit: 'PCS', quantity: 100, sgst: 9, cgst: 9, discountType: 'amount', discount: 2.50 },
{ code: 'ITM005', hsn: '8525', name: 'Webcam', description: '1080p HD webcam with built-in microphone', price: 67.99, unit: 'PCS', quantity: 15, sgst: 9, cgst: 9, discountType: 'percent', discount: 10 }
];
// Default customer data
const defaultCustomers = [
{ contact: "+919037393709", name: "John Doe", email: "john@example.com", address: "123 Main St, City" },
{ contact: "+919876543210", name: "Jane Smith", email: "jane@example.com", address: "456 Park Ave, City" }
];
// Migrate data from localStorage to IndexedDB
async function migrateLocalStorageToIndexedDB() {
try {
const invoiceCount = await db.invoices.count();
if (invoiceCount > 0) return; // Skip migration if IndexedDB already has data
const localInventory = JSON.parse(localStorage.getItem('inventory'));
const localCustomers = JSON.parse(localStorage.getItem('customerDatabase'));
const localInvoices = JSON.parse(localStorage.getItem('invoices'));
if (localInventory && localInventory.length > 0) {
await db.inventory.bulkPut(localInventory);
} else {
await db.inventory.bulkPut(defaultInventory);
}
if (localCustomers && localCustomers.length > 0) {
await db.customers.bulkPut(localCustomers);
} else {
await db.customers.bulkPut(defaultCustomers);
}
if (localInvoices && localInvoices.length > 0) {
await db.invoices.bulkPut(localInvoices);
}
// Clear localStorage after migration
localStorage.removeItem('inventory');
localStorage.removeItem('customerDatabase');
localStorage.removeItem('invoices');
} catch (error) {
showStatus('Error during data migration: ' + error.message, 'error');
}
}
// Load data from IndexedDB
async function loadDataFromIndexedDB() {
try {
inventory = await db.inventory.toArray();
customerDatabase = await db.customers.toArray();
invoices = await db.invoices.toArray();
filteredInventory = [...inventory];
} catch (error) {
showStatus('Error loading data from IndexedDB: ' + error.message, 'error');
}
}
// Input sanitization function
function sanitizeInput(input) {
return input.replace(/[<>"'&]/g, '');
}
// Debounce function for autocomplete
function debounce(func, wait) {
let timeout;
return function executedFunction(...args) {
const later = () => {
clearTimeout(timeout);
func(...args);
};
clearTimeout(timeout);
timeout = setTimeout(later, wait);
};
}
// Generate unique invoice number
async function generateInvoiceNumber() {
try {
const invoices = await db.invoices.toArray();
const existingNumbers = invoices.map(inv => parseInt(inv.invoiceNumber.replace('INV-', '')));
const nextNumber = existingNumbers.length ? Math.max(...existingNumbers) + 1 : 1;
return `INV-${String(nextNumber).padStart(3, '0')}`;
} catch (error) {
showStatus('Error generating invoice number: ' + error.message, 'error');
return 'INV-001';
}
}
// Navigation functionality
function setupNavigation() {
const navButtons = document.querySelectorAll('.nav-btn');
navButtons.forEach(button => {
button.addEventListener('click', function() {
navButtons.forEach(btn => btn.classList.remove('active'));
this.classList.add('active');
document.querySelectorAll('.section').forEach(section => section.classList.remove('active'));
document.getElementById(this.getAttribute('data-section')).classList.add('active');
});
});
}
// Show status message
function showStatus(message, type, elementId = 'statusMessage') {
const statusMessage = document.getElementById(elementId);
statusMessage.textContent = message;
statusMessage.className = `status-message status-${type}`;
statusMessage.style.display = 'block';
setTimeout(() => {
statusMessage.style.display = 'none';
}, 3000);
}
// Add new item row
function addItem() {
const itemsList = document.getElementById('itemsList').querySelector('tbody');
const newRow = document.createElement('tr');
newRow.className = 'item-row';
newRow.innerHTML = `
<td><input type="text" class="item-code code-input" placeholder="Enter HSN/SAC code..."><div class="dropdown item-dropdown"></div></td>
<td><input type="text" class="item-desc desc-input" placeholder="Service or product description"></td>
<td><select class="item-unit unit-select"><option value="PCS">PCS</option><option value="KG">KG</option><option value="LTR">LTR</option><option value="MTR">MTR</option><option value="BOX">BOX</option><option value="SET">SET</option></select></td>
<td><input type="number" class="item-qty qty-input" value="1" min="1"></td>
<td><input type="number" class="item-rate rate-input" value="0" step="0.01" min="0"></td>
<td>
<select class="disc-type-select">
<option value="percent">%</option>
<option value="amount">₹</option>
</select>
</td>
<td><input type="number" class="item-disc disc-input" value="0" step="0.01" min="0"></td>
<td><input type="number" class="item-sgst sgst-input" value="0" step="0.01" min="0"></td>
<td><input type="number" class="item-cgst cgst-input" value="0" step="0.01" min="0"></td>
<td><input type="text" class="item-total total-input" value="0.00" readonly></td>
<td><button class="remove-btn" onclick="removeItem(this)">Remove</button></td>
`;
itemsList.appendChild(newRow);
attachInputListeners(newRow);
setupItemAutocomplete(newRow);
updateItemTotals();
return newRow;
}
// Remove item row
function removeItem(button) {
const itemsList = document.getElementById('itemsList').querySelector('tbody');
if (itemsList.children.length > 1) {
button.closest('tr').remove();
updateItemTotals();
} else {
showStatus('At least one item is required.', 'error');
}
}
// Attach input listeners for real-time calculations
function attachInputListeners(row) {
row.querySelectorAll('.item-qty, .item-rate, .item-disc, .item-sgst, .item-cgst, .disc-type-select').forEach(input => {
input.addEventListener('input', () => {
const code = row.querySelector('.item-code').value;
const qty = parseInt(row.querySelector('.item-qty').value) || 0;
const disc = parseFloat(row.querySelector('.item-disc').value) || 0;
const discType = row.querySelector('.disc-type-select').value;
const rate = parseFloat(row.querySelector('.item-rate').value) || 0;
// Validate quantity
if (input.classList.contains('item-qty') && code) {
const item = inventory.find(i => i.code === code);
if (item && qty > item.quantity) {
input.classList.add('quantity-error');
showStatus(`Insufficient stock for ${item.description}. Available: ${item.quantity} units.`, 'error');
input.value = item.quantity;
} else {
input.classList.remove('quantity-error');
}
}
// Validate discount
if (input.classList.contains('item-disc') || input.classList.contains('disc-type-select')) {
if (discType === 'percent' && disc > 100) {
input.classList.add('disc-error');
showStatus('Discount percentage cannot exceed 100%.', 'error');
input.value = 100;
} else if (discType === 'amount' && disc > qty * rate) {
input.classList.add('disc-error');
showStatus('Discount amount cannot exceed subtotal.', 'error');
input.value = qty * rate;
} else {
input.classList.remove('disc-error');
}
}
updateItemTotal(row);
updateItemTotals();
});
});
}
// Update individual item total
function updateItemTotal(row) {
const qty = parseFloat(row.querySelector('.item-qty').value) || 0;
const rate = parseFloat(row.querySelector('.item-rate').value) || 0;
const discType = row.querySelector('.disc-type-select').value;
const disc = parseFloat(row.querySelector('.item-disc').value) || 0;
const sgst = parseFloat(row.querySelector('.item-sgst').value) || 0;
const cgst = parseFloat(row.querySelector('.item-cgst').value) || 0;
const subtotal = qty * rate;
let discAmount = discType === 'percent' ? subtotal * (disc / 100) : disc;
const afterDisc = subtotal - discAmount;
const sgstAmount = afterDisc * (sgst / 100);
const cgstAmount = afterDisc * (cgst / 100);
const lineTotal = afterDisc + sgstAmount + cgstAmount;
row.querySelector('.item-total').value = lineTotal.toFixed(2);
}
// Update all item totals and invoice preview
function updateItemTotals() {
const rows = document.querySelectorAll('.item-row');
let subtotal = 0, totalDiscount = 0, totalSGST = 0, totalCGST = 0, grandTotal = 0;
let canGenerate = true;
rows.forEach(row => {
const code = row.querySelector('.item-code').value;
const qty = parseInt(row.querySelector('.item-qty').value) || 0;
const disc = parseFloat(row.querySelector('.item-disc').value) || 0;
const discType = row.querySelector('.disc-type-select').value;
const rate = parseFloat(row.querySelector('.item-rate').value) || 0;
const item = inventory.find(i => i.code === code);
if (item && qty > item.quantity) {
canGenerate = false;
row.querySelector('.item-qty').classList.add('quantity-error');
showStatus(`Insufficient stock for ${item.description}. Available: ${item.quantity} units.`, 'error');
} else {
row.querySelector('.item-qty').classList.remove('quantity-error');
}
if (discType === 'percent' && disc > 100) {
canGenerate = false;
row.querySelector('.item-disc').classList.add('disc-error');
showStatus('Discount percentage cannot exceed 100%.', 'error');
} else if (discType === 'amount' && disc > qty * rate) {
canGenerate = false;
row.querySelector('.item-disc').classList.add('disc-error');
showStatus('Discount amount cannot exceed subtotal.', 'error');
} else {
row.querySelector('.item-disc').classList.remove('disc-error');
}
});
if (!canGenerate) return;
rows.forEach(row => {
const qty = parseFloat(row.querySelector('.item-qty').value) || 0;
const rate = parseFloat(row.querySelector('.item-rate').value) || 0;
const discType = row.querySelector('.disc-type-select').value;
const disc = parseFloat(row.querySelector('.item-disc').value) || 0;
const sgst = parseFloat(row.querySelector('.item-sgst').value) || 0;
const cgst = parseFloat(row.querySelector('.item-cgst').value) || 0;
const subtotalAmount = qty * rate;
let discAmount = discType === 'percent' ? subtotalAmount * (disc / 100) : disc;
const afterDisc = subtotalAmount - discAmount;
const sgstAmount = afterDisc * (sgst / 100);
const cgstAmount = afterDisc * (cgst / 100);
const lineTotal = afterDisc + sgstAmount + cgstAmount;
row.querySelector('.item-total').value = lineTotal.toFixed(2);
subtotal += subtotalAmount;
totalDiscount += discAmount;
totalSGST += sgstAmount;
totalCGST += cgstAmount;
grandTotal += lineTotal;
});
const totalsRow = `
<tr>
<td colspan="4"></td>
<td colspan="3">Subtotal</td>
<td>₹${subtotal.toFixed(2)}</td>
</tr>
<tr>
<td colspan="4"></td>
<td colspan="3">Total Discount</td>
<td>₹${totalDiscount.toFixed(2)}</td>
</tr>
<tr>
<td colspan="4"></td>
<td colspan="3">Total SGST</td>
<td>₹${totalSGST.toFixed(2)}</td>
</tr>
<tr>
<td colspan="4"></td>
<td colspan="3">Total CGST</td>
<td>₹${totalCGST.toFixed(2)}</td>
</tr>
<tr>
<td colspan="4"></td>
<td colspan="3"><strong>Grand Total</strong></td>
<td><strong>₹${grandTotal.toFixed(2)}</strong></td>
</tr>
`;
generateInvoice(totalsRow);
}
// Save invoice and update inventory
async function saveInvoice() {
try {
const invoice = {
invoiceNumber: document.getElementById('invoiceNumber').value || await generateInvoiceNumber(),
invoiceDate: document.getElementById('invoiceDate').value,
dueDate: document.getElementById('dueDate').value,
clientContact: sanitizeInput(document.getElementById('clientContact').value),
clientName: sanitizeInput(document.getElementById('clientName').value),
clientEmail: sanitizeInput(document.getElementById('clientEmail').value),
clientAddress: sanitizeInput(document.getElementById('clientAddress').value),
items: [],
subtotal: 0,
totalDiscount: 0,
totalSGST: 0,
totalCGST: 0,
grandTotal: 0,
timestamp: new Date().toISOString()
};
const rows = document.querySelectorAll('.item-row');
let canSave = true;
// Validate all rows
rows.forEach(row => {
const code = row.querySelector('.item-code').value;
const qty = parseInt(row.querySelector('.item-qty').value) || 0;
const disc = parseFloat(row.querySelector('.item-disc').value) || 0;
const discType = row.querySelector('.disc-type-select').value;
const rate = parseFloat(row.querySelector('.item-rate').value) || 0;
const item = inventory.find(i => i.code === code);
if (item && qty > item.quantity) {
canSave = false;
row.querySelector('.item-qty').classList.add('quantity-error');
showStatus(`Insufficient stock for ${item.description}. Available: ${item.quantity} units.`, 'error');
}
if (discType === 'percent' && disc > 100) {
canSave = false;
row.querySelector('.item-disc').classList.add('disc-error');
showStatus('Discount percentage cannot exceed 100%.', 'error');
} else if (discType === 'amount' && disc > qty * rate) {
canSave = false;
row.querySelector('.item-disc').classList.add('disc-error');
showStatus('Discount amount cannot exceed subtotal.', 'error');
}
});
if (!canSave) return;
// Build invoice items and update totals
rows.forEach(row => {
const code = row.querySelector('.item-code').value;
const qty = parseFloat(row.querySelector('.item-qty').value) || 0;
const unit = row.querySelector('.item-unit').value || 'PCS';
const rate = parseFloat(row.querySelector('.item-rate').value) || 0;
const discType = row.querySelector('.disc-type-select').value;
const disc = parseFloat(row.querySelector('.item-disc').value) || 0;
const sgst = parseFloat(row.querySelector('.item-sgst').value) || 0;
const cgst = parseFloat(row.querySelector('.item-cgst').value) || 0;
const subtotalAmount = qty * rate;
let discAmount = discType === 'percent' ? subtotalAmount * (disc / 100) : disc;
const afterDisc = subtotalAmount - discAmount;
const sgstAmount = afterDisc * (sgst / 100);
const cgstAmount = afterDisc * (cgst / 100);
const lineTotal = afterDisc + sgstAmount + cgstAmount;
invoice.items.push({
code: sanitizeInput(code),
description: sanitizeInput(row.querySelector('.item-desc').value),
quantity: qty,
unit: unit,
rate: rate,
discountType: discType,
discount: disc,
sgst: sgst,
cgst: cgst,
total: lineTotal
});
invoice.subtotal += subtotalAmount;
invoice.totalDiscount += discAmount;
invoice.totalSGST += sgstAmount;
invoice.totalCGST += cgstAmount;
invoice.grandTotal += lineTotal;
const item = inventory.find(i => i.code === code);
if (item) item.quantity -= qty;
});
if (!invoice.clientContact || !invoice.clientName || invoice.items.length === 0) {
showStatus('Please fill in client details and add at least one item.', 'error');
return;
}
// Save invoice and update inventory
await db.invoices.put(invoice);
await db.inventory.bulkPut(inventory);
invoices = await db.invoices.toArray();
loadStockTable();
showStatus('Invoice saved successfully!', 'success');
updateDashboard();
// Reset form
document.getElementById('invoiceNumber').value = await generateInvoiceNumber();
document.getElementById('clientContact').value = '';
document.getElementById('clientName').value = '';
document.getElementById('clientEmail').value = '';
document.getElementById('clientAddress').value = '';
document.getElementById('whatsappNumber').value = '';
const itemsList = document.getElementById('itemsList').querySelector('tbody');
itemsList.innerHTML = '';
addItem();
} catch (error) {
showStatus('Error saving invoice: ' + error.message, 'error');
}
}
// Generate invoice preview
function generateInvoice(totalsRow) {
const companyName = document.getElementById('companyName').value;
const companyAddress = document.getElementById('companyAddress').value;
const companyContact = document.getElementById('companyContact').value;
const clientName = document.getElementById('clientName').value;
const clientAddress = document.getElementById('clientAddress').value;
const clientContact = document.getElementById('clientContact').value;
const clientEmail = document.getElementById('clientEmail').value;
const invoiceNumber = document.getElementById('invoiceNumber').value;
const invoiceDate = document.getElementById('invoiceDate').value;
const dueDate = document.getElementById('dueDate').value;
document.getElementById('previewCompanyName').textContent = companyName || 'Your Company Name';
document.getElementById('previewCompanyAddress').textContent = companyAddress || '123 Business Street, City, State - ZIP';
document.getElementById('previewCompanyContact').textContent = companyContact || 'Email: info@company.com | Phone: +91 9037393709';
document.getElementById('previewClientName').textContent = clientName || 'Customer Name';
document.getElementById('previewClientAddress').textContent = clientAddress || 'Customer Address';
document.getElementById('previewClientContact').textContent = clientContact || 'Customer Contact';
document.getElementById('previewClientEmail').textContent = clientEmail || 'Customer Email';
document.getElementById('previewInvoiceNumber').textContent = invoiceNumber || 'INV-001';
document.getElementById('previewInvoiceDate').textContent = invoiceDate || new Date().toLocaleDateString();
document.getElementById('previewDueDate').textContent = dueDate || new Date().toLocaleDateString();
let itemsHtml = '';
document.querySelectorAll('.item-row').forEach(row => {
const code = row.querySelector('.item-code').value || '';
const desc = row.querySelector('.item-desc').value || 'Sample Item';
const unit = row.querySelector('.item-unit').value || 'PCS';
const qty = row.querySelector('.item-qty').value || 1;
const rate = parseFloat(row.querySelector('.item-rate').value) || 0;
const discType = row.querySelector('.disc-type-select').value;
const disc = parseFloat(row.querySelector('.item-disc').value) || 0;
const sgst = parseFloat(row.querySelector('.item-sgst').value) || 0;
const cgst = parseFloat(row.querySelector('.item-cgst').value) || 0;
const total = parseFloat(row.querySelector('.item-total').value) || 0;
const item = inventory.find(i => i.code === code);
const hsnCode = item ? item.hsn : code;
const discDisplay = discType === 'percent' ? `${disc}%` : `₹${disc.toFixed(2)}`;
itemsHtml += `
<tr>
<td>${sanitizeInput(hsnCode)}</td>
<td>${sanitizeInput(desc)}</td>
<td>${unit}</td>
<td>${qty}</td>
<td>₹${rate.toFixed(2)}</td>
<td>${discDisplay}</td>
<td>${sgst}%</td>
<td>${cgst}%</td>
<td>₹${total.toFixed(2)}</td>
</tr>
`;
});
itemsHtml += totalsRow;
document.getElementById('previewItems').innerHTML = itemsHtml;
document.getElementById('previewTotal').textContent = `₹${parseFloat(totalsRow.match(/₹([\d.]+)/)[1]).toFixed(2)}`;
}
// Generate PDF
async function generatePDF() {
try {
const { jsPDF } = window.jspdf;
const doc = new jsPDF();
const invoiceBox = document.querySelector('.invoice-box');
const companyName = document.getElementById('previewCompanyName').textContent;
const invoiceNumber = document.getElementById('previewInvoiceNumber').textContent;
// Add logo if present
const logo = document.querySelector('.invoice-logo img');
if (logo) {
const logoStyle = window.getComputedStyle(document.querySelector('.invoice-logo'));
const left = parseFloat(logoStyle.left) / 3.78; // Convert px to mm
const top = parseFloat(logoStyle.top) / 3.78;
const width = parseFloat(logoStyle.width) / 3.78;
const height = parseFloat(logoStyle.height) / 3.78;
const imgData = await getImageData(logo);
doc.addImage(imgData, 'PNG', left, top, width, height);
}
// Capture invoice content
const canvas = await html2canvas(invoiceBox, { scale: 2 });
const imgData = canvas.toDataURL('image/png');
doc.addImage(imgData, 'PNG', 10, 30, 190, 0);
doc.save(`${companyName}_Invoice_${invoiceNumber}.pdf`);
} catch (error) {
showStatus('Error generating PDF: ' + error.message, 'error');
}
}
// Share PDF via WhatsApp
// Replace your existing sharePDF() function with this improved version
async function sharePDF() {
try {
const { jsPDF } = window.jspdf;
const doc = new jsPDF();
const invoiceBox = document.querySelector('.invoice-box');
const companyName = document.getElementById('previewCompanyName').textContent;
const invoiceNumber = document.getElementById('previewInvoiceNumber').textContent;
const whatsappNumber = document.getElementById('whatsappNumber').value;
if (!whatsappNumber) {
showStatus('Please enter a WhatsApp number.', 'error');
return;
}
// Add logo if present
const logo = document.querySelector('.invoice-logo img');
if (logo) {
const logoStyle = window.getComputedStyle(document.querySelector('.invoice-logo'));
const left = parseFloat(logoStyle.left) / 3.78;
const top = parseFloat(logoStyle.top) / 3.78;
const width = parseFloat(logoStyle.width) / 3.78;
const height = parseFloat(logoStyle.height) / 3.78;
const imgData = await getImageData(logo);
doc.addImage(imgData, 'PNG', left, top, width, height);
}
// Capture the invoice with higher resolution
const canvas = await html2canvas(invoiceBox, {
scale: 2,
useCORS: true,
allowTaint: true,
height: invoiceBox.scrollHeight,
width: invoiceBox.scrollWidth
});
const imgData = canvas.toDataURL('image/png');
const imgWidth = 190; // PDF width in mm
const pageHeight = 277; // A4 page height in mm
const imgHeight = (canvas.height * imgWidth) / canvas.width;
let heightLeft = imgHeight;
let position = 30; // Start position
// Add first page
doc.addImage(imgData, 'PNG', 10, position, imgWidth, imgHeight);
heightLeft -= (pageHeight - position);
// Add additional pages if needed
while (heightLeft >= 0) {
position = heightLeft - imgHeight + 30;
doc.addPage();
doc.addImage(imgData, 'PNG', 10, position, imgWidth, imgHeight);
heightLeft -= pageHeight;
}
const pdfBlob = doc.output('blob');
const file = new File([pdfBlob], `${companyName}_Invoice_${invoiceNumber}.pdf`, { type: 'application/pdf' });
if (navigator.canShare && navigator.canShare({ files: [file] })) {
await navigator.share({
files: [file],
title: `Invoice ${invoiceNumber}`,
text: `Invoice ${invoiceNumber} from ${companyName}`,
url: whatsappNumber ? `https://wa.me/${whatsappNumber.replace('+', '')}?text=Invoice%20${invoiceNumber}%20from%20${encodeURIComponent(companyName)}` : ''
});
} else {
// Fallback: Download the file and open WhatsApp
const url = URL.createObjectURL(pdfBlob);
const a = document.createElement('a');
a.href = url;
a.download = `${companyName}_Invoice_${invoiceNumber}.pdf`;
a.click();
URL.revokeObjectURL(url);
// Open WhatsApp with message
const whatsappUrl = `https://wa.me/${whatsappNumber.replace('+', '')}?text=Please%20find%20the%20invoice%20PDF%20attached.%20Invoice%20${invoiceNumber}%20from%20${encodeURIComponent(companyName)}`;
window.open(whatsappUrl, '_blank');
showStatus('PDF downloaded. Please manually attach it to WhatsApp.', 'success');
}
} catch (error) {
showStatus('Error sharing PDF: ' + error.message, 'error');
}
}
// Print invoice
function printInvoice() {
window.print();
}
// Get image data for PDF
function getImageData(img) {
return new Promise((resolve) => {
const canvas = document.createElement('canvas');
canvas.width = img.naturalWidth;
canvas.height = img.naturalHeight;
const ctx = canvas.getContext('2d');
ctx.drawImage(img, 0, 0);
resolve(canvas.toDataURL('image/png'));
});
}
// Setup item autocomplete
function setupItemAutocomplete(row) {
const codeInput = row.querySelector('.item-code');
const dropdown = row.querySelector('.item-dropdown');
codeInput.addEventListener('input', debounce(async () => {
const query = codeInput.value.toLowerCase();
dropdown.innerHTML = '';
if (query.length < 1) {
dropdown.style.display = 'none';
return;
}
const filtered = inventory.filter(item =>
item.code.toLowerCase().includes(query) ||
item.description.toLowerCase().includes(query)
);
filtered.forEach(item => {
const div = document.createElement('div');
div.className = 'dropdown-item';
div.textContent = `${item.code} - ${item.description}`;
div.addEventListener('click', () => {
codeInput.value = item.code;
row.querySelector('.item-desc').value = item.description;
row.querySelector('.item-rate').value = item.price.toFixed(2);
row.querySelector('.item-unit').value = item.unit;
row.querySelector('.item-sgst').value = item.sgst;
row.querySelector('.item-cgst').value = item.cgst;
row.querySelector('.item-disc').value = item.discount;
row.querySelector('.disc-type-select').value = item.discountType;
[row.querySelector('.item-desc'), row.querySelector('.item-rate'), row.querySelector('.item-unit'),
row.querySelector('.item-sgst'), row.querySelector('.item-cgst'), row.querySelector('.item-disc'),
row.querySelector('.disc-type-select')].forEach(el => el.classList.add('auto-populated'));
updateItemTotal(row);
updateItemTotals();
dropdown.style.display = 'none';
});
dropdown.appendChild(div);
});
dropdown.style.display = filtered.length ? 'block' : 'none';
}, 300));
}
// Client contact autocomplete
function setupClientAutocomplete() {
const contactInput = document.getElementById('clientContact');
const dropdown = document.getElementById('contactDropdown');
contactInput.addEventListener('input', debounce(async () => {
const query = contactInput.value.toLowerCase();
dropdown.innerHTML = '';
if (query.length < 1) {
dropdown.style.display = 'none';
return;
}
const filtered = customerDatabase.filter(customer =>
customer.contact.toLowerCase().includes(query) ||
customer.name.toLowerCase().includes(query)
);
filtered.forEach(customer => {
const div = document.createElement('div');
div.className = 'dropdown-item';
div.textContent = `${customer.contact} - ${customer.name}`;
div.addEventListener('click', () => {
contactInput.value = customer.contact;
document.getElementById('clientName').value = customer.name;
document.getElementById('clientEmail').value = customer.email;
document.getElementById('clientAddress').value = customer.address;
document.getElementById('whatsappNumber').value = customer.contact;
[document.getElementById('clientName'), document.getElementById('clientEmail'),
document.getElementById('clientAddress'), document.getElementById('whatsappNumber')]
.forEach(el => el.classList.add('auto-populated'));
dropdown.style.display = 'none';
});
dropdown.appendChild(div);
});
dropdown.style.display = filtered.length ? 'block' : 'none';
}, 300));
}
// Load stock table
async function loadStockTable() {
try {
const stockTableBody = document.getElementById('stockTableBody');
stockTableBody.innerHTML = '';
inventory = await db.inventory.toArray();
inventory.forEach((item, index) => {
const row = document.createElement('tr');
const discDisplay = item.discountType === 'percent' ? `${item.discount}%` : `₹${item.discount.toFixed(2)}`;
row.innerHTML = `
<td>${sanitizeInput(item.code)}</td>
<td>${sanitizeInput(item.hsn)}</td>
<td>${sanitizeInput(item.description)}</td>
<td>₹${item.price.toFixed(2)}</td>
<td>${item.unit}</td>
<td>${item.sgst}%</td>
<td>${item.cgst}%</td>
<td>${discDisplay}</td>
<td class="${item.quantity < 10 ? 'low-stock' : ''}">${item.quantity}</td>
<td>
<button class="edit-btn" onclick="editStockItem(${index})">Edit</button>
<button class="delete-btn" onclick="deleteStockItem('${item.code}')">Delete</button>
</td>
`;
stockTableBody.appendChild(row);
});
} catch (error) {
showStatus('Error loading stock table: ' + error.message, 'error');
}
}
// Add stock item
async function addStockItem() {
try {
const item = {
code: sanitizeInput(document.getElementById('stockCode').value),
hsn: sanitizeInput(document.getElementById('stockHSN').value),
description: sanitizeInput(document.getElementById('stockDescription').value),
price: parseFloat(document.getElementById('stockPrice').value) || 0,
unit: document.getElementById('stockUnit').value,
quantity: parseInt(document.getElementById('stockQuantity').value) || 0,
sgst: parseFloat(document.getElementById('stockSGST').value) || 0,
cgst: parseFloat(document.getElementById('stockCGST').value) || 0,
discountType: document.getElementById('stockDiscountType').value,
discount: parseFloat(document.getElementById('stockDiscount').value) || 0
};
if (!item.code || !item.description || !item.hsn) {
showStatus('Please fill in all required fields (Code, HSN/SAC, Description).', 'error');
return;
}
if (inventory.some(i => i.code === item.code)) {
showStatus('Item code already exists.', 'error');
return;
}
await db.inventory.put(item);
inventory = await db.inventory.toArray();
loadStockTable();
document.getElementById('stockCode').value = '';
document.getElementById('stockHSN').value = '';
document.getElementById('stockDescription').value = '';
document.getElementById('stockPrice').value = '';
document.getElementById('stockUnit').value = 'PCS';
document.getElementById('stockQuantity').value = '';
document.getElementById('stockSGST').value = '9';
document.getElementById('stockCGST').value = '9';
document.getElementById('stockDiscountType').value = 'percent';
document.getElementById('stockDiscount').value = '0';
showStatus('Item added successfully!', 'success');
} catch (error) {
showStatus('Error adding stock item: ' + error.message, 'error');
}
}
// Edit stock item
function editStockItem(index) {
const item = inventory[index];
document.getElementById('stockCode').value = item.code;
document.getElementById('stockHSN').value = item.hsn;
document.getElementById('stockDescription').value = item.description;
document.getElementById('stockPrice').value = item.price;
document.getElementById('stockUnit').value = item.unit;
document.getElementById('stockQuantity').value = item.quantity;
document.getElementById('stockSGST').value = item.sgst;
document.getElementById('stockCGST').value = item.cgst;
document.getElementById('stockDiscountType').value = item.discountType;
document.getElementById('stockDiscount').value = item.discount;
document.getElementById('add-stock-btn').textContent = 'Update Item';
document.getElementById('add-stock-btn').onclick = async () => {
try {
const updatedItem = {
code: sanitizeInput(document.getElementById('stockCode').value),
hsn: sanitizeInput(document.getElementById('stockHSN').value),
description: sanitizeInput(document.getElementById('stockDescription').value),
price: parseFloat(document.getElementById('stockPrice').value) || 0,
unit: document.getElementById('stockUnit').value,
quantity: parseInt(document.getElementById('stockQuantity').value) || 0,
sgst: parseFloat(document.getElementById('stockSGST').value) || 0,
cgst: parseFloat(document.getElementById('stockCGST').value) || 0,
discountType: document.getElementById('stockDiscountType').value,
discount: parseFloat(document.getElementById('stockDiscount').value) || 0
};
if (!updatedItem.code || !updatedItem.description || !updatedItem.hsn) {
showStatus('Please fill in all required fields (Code, HSN/SAC, Description).', 'error');
return;
}
await db.inventory.put(updatedItem);
inventory = await db.inventory.toArray();
loadStockTable();
document.getElementById('add-stock-btn').textContent = 'Add to Inventory';
document.getElementById('add-stock-btn').onclick = addStockItem;
document.getElementById('stockCode').value = '';
document.getElementById('stockHSN').value = '';
document.getElementById('stockDescription').value = '';
document.getElementById('stockPrice').value = '';
document.getElementById('stockUnit').value = 'PCS';
document.getElementById('stockQuantity').value = '';
document.getElementById('stockSGST').value = '9';
document.getElementById('stockCGST').value = '9';
document.getElementById('stockDiscountType').value = 'percent';
document.getElementById('stockDiscount').value = '0';
showStatus('Item updated successfully!', 'success');
} catch (error) {
showStatus('Error updating stock item: ' + error.message, 'error');
}
};
}
// Delete stock item
async function deleteStockItem(code) {
if (confirm('Are you sure you want to delete this item?')) {
try {
await db.inventory.delete(code);
inventory = await db.inventory.toArray();
loadStockTable();
showStatus('Item deleted successfully!', 'success');
} catch (error) {
showStatus('Error deleting stock item: ' + error.message, 'error');
}
}
}
// Add customer
async function addCustomer() {
try {
const customer = {
contact: sanitizeInput(document.getElementById('newCustomerContact').value),
name: sanitizeInput(document.getElementById('newCustomerName').value),
email: sanitizeInput(document.getElementById('newCustomerEmail').value),
address: sanitizeInput(document.getElementById('newCustomerAddress').value)
};
if (!customer.contact || !customer.name) {
showStatus('Please fill in contact number and name.', 'error');
return;
}
if (customerDatabase.some(c => c.contact === customer.contact)) {
showStatus('Customer with this contact number already exists.', 'error');
return;
}
await db.customers.put(customer);
customerDatabase = await db.customers.toArray();
loadCustomerTable();
document.getElementById('newCustomerContact').value = '';
document.getElementById('newCustomerName').value = '';
document.getElementById('newCustomerEmail').value = '';
document.getElementById('newCustomerAddress').value = '';
showStatus('Customer added successfully!', 'success');
updateDashboard();
} catch (error) {
showStatus('Error adding customer: ' + error.message, 'error');
}
}
// Load customer table
async function loadCustomerTable() {
try {
const customerTableBody = document.getElementById('customerTableBody');
customerTableBody.innerHTML = '';
customerDatabase = await db.customers.toArray();
customerDatabase.forEach((customer, index) => {
const row = document.createElement('tr');
row.innerHTML = `
<td>${sanitizeInput(customer.contact)}</td>
<td>${sanitizeInput(customer.name)}</td>
<td>${sanitizeInput(customer.email)}</td>
<td>${sanitizeInput(customer.address)}</td>
<td>
<button class="edit-btn" onclick="editCustomer('${customer.contact}')">Edit</button>
<button class="delete-btn" onclick="deleteCustomer('${customer.contact}')">Delete</button>
</td>
`;
customerTableBody.appendChild(row);
});
} catch (error) {
showStatus('Error loading customer table: ' + error.message, 'error');
}
}
// Edit customer
function editCustomer(contact) {
const customer = customerDatabase.find(c => c.contact === contact);
if (!customer) return;
editingCustomerContact = contact;
document.getElementById('editCustomerContact').value = customer.contact;
document.getElementById('editCustomerName').value = customer.name;
document.getElementById('editCustomerEmail').value = customer.email;
document.getElementById('editCustomerAddress').value = customer.address;
document.getElementById('editCustomerDialogOverlay').style.display = 'flex';
}
// Save edited customer
async function saveEditedCustomer() {
try {
const updatedCustomer = {
contact: sanitizeInput(document.getElementById('editCustomerContact').value),
name: sanitizeInput(document.getElementById('editCustomerName').value),
email: sanitizeInput(document.getElementById('editCustomerEmail').value),
address: sanitizeInput(document.getElementById('editCustomerAddress').value)
};
if (!updatedCustomer.contact || !updatedCustomer.name) {
showStatus('Please fill in contact number and name.', 'error');
return;
}
if (updatedCustomer.contact !== editingCustomerContact && customerDatabase.some(c => c.contact === updatedCustomer.contact)) {
showStatus('Customer with this contact number already exists.', 'error');
return;
}
await db.customers.delete(editingCustomerContact);
await db.customers.put(updatedCustomer);
customerDatabase = await db.customers.toArray();
loadCustomerTable();
document.getElementById('editCustomerDialogOverlay').style.display = 'none';
showStatus('Customer updated successfully!', 'success');
editingCustomerContact = null;
} catch (error) {
showStatus('Error updating customer: ' + error.message, 'error');
}
}
// Delete customer
async function deleteCustomer(contact) {
if (confirm('Are you sure you want to delete this customer?')) {
try {
await db.customers.delete(contact);
customerDatabase = await db.customers.toArray();
loadCustomerTable();
showStatus('Customer deleted successfully!', 'success');
} catch (error) {
showStatus('Error deleting customer: ' + error.message, 'error');
}
}
}
// Load customer history
async function loadCustomerHistory() {
try {
const contact = document.getElementById('historyContact').value;
const historyTableBody = document.getElementById('customerHistoryTableBody');
historyTableBody.innerHTML = '';
const filteredInvoices = invoices.filter(inv => inv.clientContact === contact);
if (filteredInvoices.length === 0) {
showStatus('No invoices found for this customer.', 'error', 'historyStatusMessage');
return;
}
filteredInvoices.forEach(invoice => {
const row = document.createElement('tr');
row.innerHTML = `
<td>${sanitizeInput(invoice.invoiceNumber)}</td>
<td>${invoice.invoiceDate}</td>
<td>${sanitizeInput(invoice.clientName)}</td>
<td>₹${invoice.grandTotal.toFixed(2)}</td>
<td>
<button class="toggle-items-btn" onclick="toggleInvoiceItems(this, '${invoice.invoiceNumber}')">Show Items</button>
</td>
`;
const itemsRow = document.createElement('tr');
itemsRow.className = 'items-details';
itemsRow.innerHTML = `
<td colspan="5">
<table class="item-table">
<thead>
<tr>
<th>Code</th>
<th>Description</th>
<th>Unit</th>
<th>Qty</th>
<th>Rate</th>
<th>Discount</th>
<th>SGST %</th>
<th>CGST %</th>
<th>Total</th>
</tr>
</thead>
<tbody>
${invoice.items.map(item => `
<tr>
<td>${sanitizeInput(item.code)}</td>
<td>${sanitizeInput(item.description)}</td>
<td>${item.unit}</td>
<td>${item.quantity}</td>
<td>₹${item.rate.toFixed(2)}</td>
<td>${item.discountType === 'percent' ? `${item.discount}%` : `₹${item.discount.toFixed(2)}`}</td>
<td>${item.sgst}%</td>
<td>${item.cgst}%</td>
<td>₹${item.total.toFixed(2)}</td>
</tr>
`).join('')}
</tbody>
</table>
</td>
`;
historyTableBody.appendChild(row);
historyTableBody.appendChild(itemsRow);
});
showStatus('Customer history loaded successfully!', 'success', 'historyStatusMessage');
} catch (error) {
showStatus('Error loading customer history: ' + error.message, 'error', 'historyStatusMessage');
}
}
// Toggle invoice items in customer history
function toggleInvoiceItems(button, invoiceNumber) {
const row = button.closest('tr');
const itemsRow = row.nextElementSibling;
if (itemsRow.classList.contains('active')) {
itemsRow.classList.remove('active');
button.textContent = 'Show Items';
} else {
itemsRow.classList.add('active');
button.textContent = 'Hide Items';
}
}
// Customer history contact autocomplete
function setupHistoryContactAutocomplete() {
const contactInput = document.getElementById('historyContact');
const dropdown = document.getElementById('historyContactDropdown');
contactInput.addEventListener('input', debounce(async () => {
const query = contactInput.value.toLowerCase();
dropdown.innerHTML = '';
if (query.length < 1) {
dropdown.style.display = 'none';
return;
}
const filtered = customerDatabase.filter(customer =>
customer.contact.toLowerCase().includes(query) ||
customer.name.toLowerCase().includes(query)
);
filtered.forEach(customer => {
const div = document.createElement('div');
div.className = 'dropdown-item';
div.textContent = `${customer.contact} - ${customer.name}`;
div.addEventListener('click', () => {
contactInput.value = customer.contact;
dropdown.style.display = 'none';
loadCustomerHistory();
});
dropdown.appendChild(div);
});
dropdown.style.display = filtered.length ? 'block' : 'none';
}, 300));
}
// Open item dialog
async function openItemDialog() {
try {
const itemsList = document.getElementById('itemsList2');
itemsList.innerHTML = '';
filteredInventory = await db.inventory.toArray();
filteredInventory.forEach(item => {
const discDisplay = item.discountType === 'percent' ? `${item.discount}%` : `₹${item.discount.toFixed(2)}`;
const row = document.createElement('tr');
row.innerHTML = `
<td>${sanitizeInput(item.code)}</td>
<td>${sanitizeInput(item.name)}</td>
<td>${sanitizeInput(item.description)}</td>
<td>₹${item.price.toFixed(2)}</td>
<td>${item.sgst}%</td>
<td>${item.cgst}%</td>
<td>${discDisplay}</td>
`;
row.addEventListener('click', () => {
const newRow = addItem();
newRow.querySelector('.item-code').value = item.code;
newRow.querySelector('.item-desc').value = item.description;
newRow.querySelector('.item-rate').value = item.price.toFixed(2);
newRow.querySelector('.item-unit').value = item.unit;
newRow.querySelector('.item-sgst').value = item.sgst;
newRow.querySelector('.item-cgst').value = item.cgst;
newRow.querySelector('.item-disc').value = item.discount;
newRow.querySelector('.disc-type-select').value = item.discountType;
[newRow.querySelector('.item-desc'), newRow.querySelector('.item-rate'), newRow.querySelector('.item-unit'),
newRow.querySelector('.item-sgst'), newRow.querySelector('.item-cgst'), newRow.querySelector('.item-disc'),
newRow.querySelector('.disc-type-select')].forEach(el => el.classList.add('auto-populated'));
updateItemTotal(newRow);
updateItemTotals();
});
itemsList.appendChild(row);
});
document.getElementById('dialogOverlay').style.display = 'flex';
} catch (error) {
showStatus('Error opening item dialog: ' + error.message, 'error');
}
}
// Search items in dialog
async function searchItems() {
try {
const query = document.getElementById('searchInput').value.toLowerCase();
const itemsList = document.getElementById('itemsList2');
itemsList.innerHTML = '';
filteredInventory = inventory.filter(item =>
item.code.toLowerCase().includes(query) ||
item.description.toLowerCase().includes(query)
);
filteredInventory.forEach(item => {
const discDisplay = item.discountType === 'percent' ? `${item.discount}%` : `₹${item.discount.toFixed(2)}`;
const row = document.createElement('tr');
row.innerHTML = `
<td>${sanitizeInput(item.code)}</td>
<td>${sanitizeInput(item.name)}</td>
<td>${sanitizeInput(item.description)}</td>
<td>₹${item.price.toFixed(2)}</td>
<td>${item.sgst}%</td>
<td>${item.cgst}%</td>
<td>${discDisplay}</td>
`;
row.addEventListener('click', () => {
const newRow = addItem();
newRow.querySelector('.item-code').value = item.code;
newRow.querySelector('.item-desc').value = item.description;
newRow.querySelector('.item-rate').value = item.price.toFixed(2);
newRow.querySelector('.item-unit').value = item.unit;
newRow.querySelector('.item-sgst').value = item.sgst;
newRow.querySelector('.item-cgst').value = item.cgst;
newRow.querySelector('.item-disc').value = item.discount;
newRow.querySelector('.disc-type-select').value = item.discountType;
[newRow.querySelector('.item-desc'), newRow.querySelector('.item-rate'), newRow.querySelector('.item-unit'),
newRow.querySelector('.item-sgst'), newRow.querySelector('.item-cgst'), newRow.querySelector('.item-disc'),
newRow.querySelector('.disc-type-select')].forEach(el => el.classList.add('auto-populated'));
updateItemTotal(newRow);
updateItemTotals();
document.getElementById('dialogOverlay').style.display = 'none';
});
itemsList.appendChild(row);
});
} catch (error) {
showStatus('Error searching items: ' + error.message, 'error');
}
}
// Close dialog
function closeDialog(event, overlayId) {
if (event && event.target.id !== overlayId) return;
document.getElementById(overlayId).style.display = 'none';
}
// Apply custom dialog size
function applyCustomSize(dialogId, widthInputId, heightInputId) {
const dialog = document.getElementById(dialogId);
const width = parseInt(document.getElementById(widthInputId).value);
const height = parseInt(document.getElementById(heightInputId).value);
if (width >= 300 && width <= 1200 && height >= 200 && height <= 800) {
dialog.style.width = `${width}px`;
dialog.style.height = `${height}px`;
} else {
showStatus('Width must be between 300-1200px and height between 200-800px.', 'error');
}
}
// Quick resize dialog
function quickResize(width, height, dialogId, widthInputId, heightInputId) {
document.getElementById(dialogId).style.width = `${width}px`;
document.getElementById(dialogId).style.height = `${height}px`;
document.getElementById(widthInputId).value = width;
document.getElementById(heightInputId).value = height;
}
// Backup all data
async function backupData() {
try {
const data = {
inventory: await db.inventory.toArray(),
customers: await db.customers.toArray(),
invoices: await db.invoices.toArray()
};
const blob = new Blob([JSON.stringify(data, null, 2)], { type: 'application/json' });
const url = URL.createObjectURL(blob);
const a = document.createElement('a');
a.href = url;
a.download = `invoice_backup_${new Date().toISOString().split('T')[0]}.json`;
a.click();
URL.revokeObjectURL(url);
showStatus('Backup created successfully!', 'success', 'backupStatusMessage');
} catch (error) {
showStatus('Error creating backup: ' + error.message, 'error', 'backupStatusMessage');
}
}
// Restore all data
async function restoreData() {
try {
const fileInput = document.getElementById('restoreFileInput');
const file = fileInput.files[0];
if (!file) {
showStatus('Please select a backup file.', 'error', 'backupStatusMessage');
return;
}
const text = await file.text();
const data = JSON.parse(text);
await db.inventory.clear();
await db.customers.clear();
await db.invoices.clear();
if (data.inventory) await db.inventory.bulkPut(data.inventory);
if (data.customers) await db.customers.bulkPut(data.customers);
if (data.invoices) await db.invoices.bulkPut(data.invoices);
await loadDataFromIndexedDB();
loadStockTable();
loadCustomerTable();
updateDashboard();
showStatus('Data restored successfully!', 'success', 'backupStatusMessage');
fileInput.value = '';
} catch (error) {
showStatus('Error restoring data: ' + error.message, 'error', 'backupStatusMessage');
}
}
// Backup stock data
async function backupStockData() {
try {
const data = await db.inventory.toArray();
const blob = new Blob([JSON.stringify(data, null, 2)], { type: 'application/json' });
const url = URL.createObjectURL(blob);
const a = document.createElement('a');
a.href = url;
a.download = `stock_backup_${new Date().toISOString().split('T')[0]}.json`;
a.click();
URL.revokeObjectURL(url);
showStatus('Stock backup created successfully!', 'success', 'backupStatusMessage');
} catch (error) {
showStatus('Error creating stock backup: ' + error.message, 'error', 'backupStatusMessage');
}
}
// Restore stock data
async function restoreStockData() {
try {
const fileInput = document.getElementById('restoreStockFileInput');
const file = fileInput.files[0];
if (!file) {
showStatus('Please select a stock backup file.', 'error', 'backupStatusMessage');
return;
}
const text = await file.text();
const data = JSON.parse(text);
await db.inventory.clear();
await db.inventory.bulkPut(data);
inventory = await db.inventory.toArray();
loadStockTable();
showStatus('Stock data restored successfully!', 'success', 'backupStatusMessage');
fileInput.value = '';
} catch (error) {
showStatus('Error restoring stock data: ' + error.message, 'error', 'backupStatusMessage');
}
}
// Backup customer data
async function backupCustomerData() {
try {
const data = await db.customers.toArray();
const blob = new Blob([JSON.stringify(data, null, 2)], { type: 'application/json' });
const url = URL.createObjectURL(blob);
const a = document.createElement('a');
a.href = url;
a.download = `customer_backup_${new Date().toISOString().split('T')[0]}.json`;
a.click();
URL.revokeObjectURL(url);
showStatus('Customer backup created successfully!', 'success', 'backupStatusMessage');
} catch (error) {
showStatus('Error creating customer backup: ' + error.message, 'error', 'backupStatusMessage');
}
}
// Restore customer data
async function restoreCustomerData() {
try {
const fileInput = document.getElementById('restoreCustomerFileInput');
const file = fileInput.files[0];
if (!file) {
showStatus('Please select a customer backup file.', 'error', 'backupStatusMessage');
return;
}
const text = await file.text();
const data = JSON.parse(text);
await db.customers.clear();
await db.customers.bulkPut(data);
customerDatabase = await db.customers.toArray();
loadCustomerTable();
showStatus('Customer data restored successfully!', 'success', 'backupStatusMessage');
fileInput.value = '';
} catch (error) {
showStatus('Error restoring customer data: ' + error.message, 'error', 'backupStatusMessage');
}
}
// Export invoices to CSV
function exportInvoicesToCSV() {
if (invoices.length === 0) {
showStatus('No invoices to export.', 'error');
return;
}
let csv = 'Invoice Number,Invoice Date,Due Date,Client Name,Client Contact,Client Email,Client Address,Item Code,Item Description,Item Unit,Item Quantity,Item Rate,Item Discount Type,Item Discount,Item SGST,Item CGST,Item Total,Invoice Subtotal,Invoice Total Discount,Invoice Total SGST,Invoice Total CGST,Invoice Grand Total\n';
invoices.forEach(invoice => {
invoice.items.forEach(item => {
csv += `"${invoice.invoiceNumber}","${invoice.invoiceDate}","${invoice.dueDate}","${invoice.clientName.replace(/"/g, '""')}","${invoice.clientContact.replace(/"/g, '""')}","${invoice.clientEmail.replace(/"/g, '""')}","${invoice.clientAddress.replace(/"/g, '""')}","${item.code.replace(/"/g, '""')}","${item.description.replace(/"/g, '""')}","${item.unit}","${item.quantity}","${item.rate.toFixed(2)}","${item.discountType}","${item.discount.toFixed(2)}","${item.sgst.toFixed(2)}","${item.cgst.toFixed(2)}","${item.total.toFixed(2)}","${invoice.subtotal.toFixed(2)}","${invoice.totalDiscount.toFixed(2)}","${invoice.totalSGST.toFixed(2)}","${invoice.totalCGST.toFixed(2)}","${invoice.grandTotal.toFixed(2)}"\n`;
});
});
const blob = new Blob([csv], { type: 'text/csv' });
const url = URL.createObjectURL(blob);
const a = document.createElement('a');
a.href = url;
a.download = `invoices_${new Date().toISOString().slice(0, 10)}.csv`;
a.click();
URL.revokeObjectURL(url);
showStatus('Invoices exported to CSV successfully!', 'success');
}
// Generate WhatsApp message
function generateWhatsAppMessage() {
const whatsappNumber = document.getElementById('whatsappNumber').value;
const maxDescLength = parseInt(document.getElementById('whatsappDescLength').value) || 20;
const gstEnabled = document.getElementById('gstEnabled').checked;
const companyName = document.getElementById('companyName').value || 'Your Company Name';
const invoiceNumber = document.getElementById('invoiceNumber').value;
const clientName = document.getElementById('clientName').value;
const invoiceDate = document.getElementById('invoiceDate').value;
let message = `Invoice from *${companyName}*\n`;
message += `Invoice #: ${invoiceNumber}\n`;
message += `Date: ${invoiceDate}\n`;
message += `To: ${clientName}\n\n`;
message += `Items:\n`;
let grandTotal = 0;
let totalDiscount = 0;
document.querySelectorAll('.item-row').forEach(row => {
const desc = row.querySelector('.item-desc').value;
const qty = parseFloat(row.querySelector('.item-qty').value) || 0;
const rate = parseFloat(row.querySelector('.item-rate').value) || 0;
const discType = row.querySelector('.disc-type-select').value;
const disc = parseFloat(row.querySelector('.item-disc').value) || 0;
const sgst = parseFloat(row.querySelector('.item-sgst').value) || 0;
const cgst = parseFloat(row.querySelector('.item-cgst').value) || 0;
const subtotalAmount = qty * rate;
const discAmount = discType === 'percent' ? subtotalAmount * (disc / 100) : disc;
const afterDisc = subtotalAmount - discAmount;
const sgstAmount = afterDisc * (sgst / 100);
const cgstAmount = afterDisc * (cgst / 100);
const lineTotal = afterDisc + sgstAmount + cgstAmount;
totalDiscount += discAmount;
const shortDesc = desc.length > maxDescLength ? desc.substring(0, maxDescLength) + '...' : desc;
message += `- ${shortDesc} (Qty: ${qty}, Rate: ₹${rate.toFixed(2)})`;
message += `, Discount: ${discType === 'percent' ? `${disc}%` : `₹${disc.toFixed(2)}`}`; // Add discount
if (gstEnabled) {
message += `, SGST: ${sgst}%, CGST: ${cgst}%`;
}
message += ` = ₹${lineTotal.toFixed(2)}\n`;
grandTotal += lineTotal;
});
message += `\nTotal Discount: ₹${totalDiscount.toFixed(2)}\n`; // Add total discount
message += `Grand Total: ₹${grandTotal.toFixed(2)}\n`;
message += `Thank you for your business!`;
const preview = document.getElementById('whatsappPreview');
preview.textContent = message;
preview.style.display = 'block';
}
// Send WhatsApp message
function sendWhatsApp() {
const whatsappNumber = document.getElementById('whatsappNumber').value;
const preview = document.getElementById('whatsappPreview').textContent;
if (!whatsappNumber) {
showStatus('Please enter a WhatsApp number.', 'error');
return;
}
const encodedMessage = encodeURIComponent(preview);
const url = `https://wa.me/${whatsappNumber.replace('+', '')}?text=${encodedMessage}`;
window.open(url, '_blank');
}
// Logo handling
let isDragging = false, isResizing = false, currentHandle = null;
let startX, startY, startWidth, startHeight, startLeft, startTop;
function setupLogoHandling() {
const logoUpload = document.getElementById('logoUpload');
const logoWidthInput = document.getElementById('logoWidth');
const logoHeightInput = document.getElementById('logoHeight');
const lockAspectRatio = document.getElementById('lockAspectRatio');
logoUpload.addEventListener('change', (e) => {
const file = e.target.files[0];
if (file) {
const reader = new FileReader();
reader.onload = (event) => {
const img = new Image();
img.src = event.target.result;
img.onload = () => {
const logoContainer = document.createElement('div');
logoContainer.className = 'invoice-logo';
logoContainer.style.width = '100px';
logoContainer.style.height = '100px';
logoContainer.style.left = '20px';
logoContainer.style.top = '20px';
logoContainer.innerHTML = `
<img src="${img.src}" alt="Logo">
<div class="resize-handle top-left"></div>
<div class="resize-handle top-right"></div>
<div class="resize-handle bottom-left"></div>
<div class="resize-handle bottom-right"></div>
`;
document.querySelector('.invoice-box').prepend(logoContainer);
logoWidthInput.value = 100;
logoHeightInput.value = 100;
setupLogoInteractions(logoContainer, img);
};
};
reader.readAsDataURL(file);
}
});
logoWidthInput.addEventListener('input', () => {
const logo = document.querySelector('.invoice-logo');
if (logo) {
let width = parseInt(logoWidthInput.value) || 100;
if (lockAspectRatio.checked) {
const img = logo.querySelector('img');
const aspectRatio = img.naturalWidth / img.naturalHeight;
logoHeightInput.value = Math.round(width / aspectRatio);
logo.style.height = `${logoHeightInput.value}px`;
}
logo.style.width = `${width}px`;
}
});
logoHeightInput.addEventListener('input', () => {
const logo = document.querySelector('.invoice-logo');
if (logo) {
let height = parseInt(logoHeightInput.value) || 100;
if (lockAspectRatio.checked) {
const img = logo.querySelector('img');
const aspectRatio = img.naturalWidth / img.naturalHeight;
logoWidthInput.value = Math.round(height * aspectRatio);
logo.style.width = `${logoWidthInput.value}px`;
}
logo.style.height = `${height}px`;
}
});
}
function setupLogoInteractions(logoContainer, img) {
const logoWidthInput = document.getElementById('logoWidth');
const logoHeightInput = document.getElementById('logoHeight');
const lockAspectRatio = document.getElementById('lockAspectRatio');
logoContainer.addEventListener('mousedown', (e) => {
if (e.target.classList.contains('resize-handle')) {
isResizing = true;
currentHandle = e.target.className.split(' ')[1];
startX = e.clientX;
startY = e.clientY;
startWidth = parseFloat(logoContainer.style.width);
startHeight = parseFloat(logoContainer.style.height);
startLeft = parseFloat(logoContainer.style.left);
startTop = parseFloat(logoContainer.style.top);
} else {
isDragging = true;
startX = e.clientX - parseFloat(logoContainer.style.left);
startY = e.clientY - parseFloat(logoContainer.style.top);
logoContainer.classList.add('active');
}
e.preventDefault();
});
document.addEventListener('mousemove', (e) => {
if (isDragging) {
logoContainer.style.left = `${e.clientX - startX}px`;
logoContainer.style.top = `${e.clientY - startY}px`;
} else if (isResizing) {
let newWidth, newHeight, newLeft = startLeft, newTop = startTop;
const deltaX = e.clientX - startX;
const deltaY = e.clientY - startY;
const aspectRatio = img.naturalWidth / img.naturalHeight;
if (currentHandle.includes('top-left')) {
newWidth = startWidth - deltaX;
newHeight = lockAspectRatio.checked ? newWidth / aspectRatio : startHeight - deltaY;
newLeft = startLeft + deltaX;
newTop = lockAspectRatio.checked ? startTop + deltaX / aspectRatio : startTop + deltaY;
} else if (currentHandle.includes('top-right')) {
newWidth = startWidth + deltaX;
newHeight = lockAspectRatio.checked ? newWidth / aspectRatio : startHeight - deltaY;
newTop = lockAspectRatio.checked ? startTop + deltaX / aspectRatio : startTop + deltaY;
} else if (currentHandle.includes('bottom-left')) {
newWidth = startWidth - deltaX;
newHeight = lockAspectRatio.checked ? newWidth / aspectRatio : startHeight + deltaY;
newLeft = startLeft + deltaX;
} else if (currentHandle.includes('bottom-right')) {
newWidth = startWidth + deltaX;
newHeight = lockAspectRatio.checked ? newWidth / aspectRatio : startHeight + deltaY;
}
if (newWidth >= 20 && newWidth <= 300 && newHeight >= 20 && newHeight <= 300) {
logoContainer.style.width = `${newWidth}px`;
logoContainer.style.height = `${newHeight}px`;
logoContainer.style.left = `${newLeft}px`;
logoContainer.style.top = `${newTop}px`;
logoWidthInput.value = Math.round(newWidth);
logoHeightInput.value = Math.round(newHeight);
}
}
});
document.addEventListener('mouseup', () => {
isDragging = false;
isResizing = false;
currentHandle = null;
});
logoContainer.addEventListener('dblclick', () => {
logoContainer.classList.toggle('active');
});
logoContainer.addEventListener('touchstart', (e) => {
const touch = e.touches[0];
if (e.target.classList.contains('resize-handle')) {
isResizing = true;
currentHandle = e.target.className.split(' ')[1];
startX = touch.clientX;
startY = touch.clientY;
startWidth = parseFloat(logoContainer.style.width);
startHeight = parseFloat(logoContainer.style.height);
startLeft = parseFloat(logoContainer.style.left);
startTop = parseFloat(logoContainer.style.top);
} else {
isDragging = true;
startX = touch.clientX - parseFloat(logoContainer.style.left);
startY = touch.clientY - parseFloat(logoContainer.style.top);
logoContainer.classList.add('active');
}
e.preventDefault();
});
document.addEventListener('touchmove', (e) => {
const touch = e.touches[0];
if (isDragging) {
logoContainer.style.left = `${touch.clientX - startX}px`;
logoContainer.style.top = `${touch.clientY - startY}px`;
} else if (isResizing) {
let newWidth, newHeight, newLeft = startLeft, newTop = startTop;
const deltaX = touch.clientX - startX;
const deltaY = touch.clientY - startY;
const aspectRatio = img.naturalWidth / img.naturalHeight;
if (currentHandle.includes('top-left')) {
newWidth = startWidth - deltaX;
newHeight = lockAspectRatio.checked ? newWidth / aspectRatio : startHeight - deltaY;
newLeft = startLeft + deltaX;
newTop = lockAspectRatio.checked ? startTop + deltaX / aspectRatio : startTop + deltaY;
} else if (currentHandle.includes('top-right')) {
newWidth = startWidth + deltaX;
newHeight = lockAspectRatio.checked ? newWidth / aspectRatio : startHeight - deltaY;
newTop = lockAspectRatio.checked ? startTop + deltaX / aspectRatio : startTop + deltaY;
} else if (currentHandle.includes('bottom-left')) {
newWidth = startWidth - deltaX;
newHeight = lockAspectRatio.checked ? newWidth / aspectRatio : startHeight + deltaY;
newLeft = startLeft + deltaX;
} else if (currentHandle.includes('bottom-right')) {
newWidth = startWidth + deltaX;
newHeight = lockAspectRatio.checked ? newWidth / aspectRatio : startHeight + deltaY;
}
if (newWidth >= 20 && newWidth <= 300 && newHeight >= 20 && newHeight <= 300) {
logoContainer.style.width = `${newWidth}px`;
logoContainer.style.height = `${newHeight}px`;
logoContainer.style.left = `${newLeft}px`;
logoContainer.style.top = `${newTop}px`;
logoWidthInput.value = Math.round(newWidth);
logoHeightInput.value = Math.round(newHeight);
}
}
});
document.addEventListener('touchend', () => {
isDragging = false;
isResizing = false;
currentHandle = null;
});
}
function resetLogoPosition() {
const logo = document.querySelector('.invoice-logo');
if (logo) {
logo.style.left = '20px';
logo.style.top = '20px';
logo.style.width = '100px';
logo.style.height = '100px';
document.getElementById('logoWidth').value = 100;
document.getElementById('logoHeight').value = 100;
}
}
function removeLogo() {
const logo = document.querySelector('.invoice-logo');
if (logo) logo.remove();
document.getElementById('logoUpload').value = '';
document.getElementById('logoWidth').value = '';
document.getElementById('logoHeight').value = '';
}
// Update dashboard
async function updateDashboard() {
try {
const dateRange = document.getElementById('dateRangeFilter').value;
let fromDate, toDate = new Date();
if (dateRange === 'custom') {
fromDate = new Date(document.getElementById('fromDate').value);
toDate = new Date(document.getElementById('toDate').value);
} else {
fromDate = new Date();
fromDate.setDate(toDate.getDate() - parseInt(dateRange));
}
const filteredInvoices = invoices.filter(inv => {
const invDate = new Date(inv.timestamp);
return invDate >= fromDate && invDate <= toDate;
});
let totalRevenue = 0, totalOrders = filteredInvoices.length, totalProducts = 0, totalDiscount = 0;
const productSales = {};
filteredInvoices.forEach(invoice => {
totalRevenue += invoice.grandTotal;
totalDiscount += invoice.totalDiscount;
invoice.items.forEach(item => {
totalProducts += item.quantity;
productSales[item.code] = (productSales[item.code] || 0) + item.quantity;
});
});
const uniqueCustomers = new Set(filteredInvoices.map(inv => inv.clientContact)).size;
document.getElementById('totalRevenue').textContent = `₹${totalRevenue.toFixed(2)}`;
document.getElementById('totalOrders').textContent = totalOrders;
document.getElementById('totalCustomers').textContent = uniqueCustomers;
document.getElementById('totalProducts').textContent = totalProducts;
document.getElementById('totalDiscount').textContent = `₹${totalDiscount.toFixed(2)}`;
const topProductsList = document.getElementById('topProductsList');
topProductsList.innerHTML = '';
const sortedProducts = Object.entries(productSales)
.sort((a, b) => b[1] - a[1])
.slice(0, 5);
sortedProducts.forEach(([code, qty]) => {
const item = inventory.find(i => i.code === code);
const div = document.createElement('div');
div.textContent = `${item ? item.description : code}: ${qty} units`;
div.addEventListener('click', () => {
document.getElementById('stockCode').value = code;
document.getElementById('nav-btn-stock').click();
});
topProductsList.appendChild(div);
});
const recentOrdersList = document.getElementById('recentOrdersList');
recentOrdersList.innerHTML = '';
filteredInvoices.slice(-5).reverse().forEach(invoice => {
const div = document.createElement('div');
div.textContent = `${invoice.invoiceNumber} - ${invoice.clientName}: ₹${invoice.grandTotal.toFixed(2)}`;
div.addEventListener('click', () => {
document.getElementById('historyContact').value = invoice.clientContact;
document.getElementById('nav-btn-customer-history').click();
loadCustomerHistory();
});
recentOrdersList.appendChild(div);
});
} catch (error) {
showStatus('Error updating dashboard: ' + error.message, 'error');
}
}
// Toggle custom date range
function toggleCustomDateRange() {
const dateRange = document.getElementById('dateRangeFilter').value;
const customDateRange = document.getElementById('customDateRange');
customDateRange.classList.toggle('hidden', dateRange !== 'custom');
updateDashboard();
}
// Clear invoices
async function clearInvoices() {
if (confirm('Are you sure you want to clear all invoices? This action cannot be undone.')) {
try {
await db.invoices.clear();
invoices = [];
updateDashboard();
showStatus('All invoices cleared successfully!', 'success');
} catch (error) {
showStatus('Error clearing invoices: ' + error.message, 'error');
}
}
}
// Initialize application
async function init() {
try {
await migrateLocalStorageToIndexedDB();
await loadDataFromIndexedDB();
setupNavigation();
setupClientAutocomplete();
setupHistoryContactAutocomplete();
setupLogoHandling();
document.querySelectorAll('.item-row').forEach(row => {
attachInputListeners(row);
setupItemAutocomplete(row);
});
document.getElementById('invoiceDate').value = new Date().toISOString().split('T')[0];
const dueDate = new Date();
dueDate.setDate(dueDate.getDate() + 30);
document.getElementById('dueDate').value = dueDate.toISOString().split('T')[0];
document.getElementById('invoiceNumber').value = await generateInvoiceNumber();
loadStockTable();
loadCustomerTable();
updateDashboard();
updateItemTotals();
} catch (error) {
showStatus('Error initializing application: ' + error.message, 'error');
}
}
document.addEventListener('DOMContentLoaded', init);
</script>
</body>
</html>
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