Billing Module Documentation
Overview
The Billing module handles all financial operations, invoicing, payment processing, and billing-related functionalities in the admin panel application.
Path:src/app/billing
Module File: billing.module.ts
Routing File: billing-routing.module.ts
Purpose
- Invoice generation and management
- Payment processing and tracking
- Billing profile management
- Usage monitoring and reporting
- Payment method configuration
- Credit card and payment gateway integration
- Account ledger and financial reporting
- Rate deck management
- CDR (Call Detail Record) processing
Components
Invoice Management
1. InvoicesComponent (invoices/invoices.component.ts)
- Invoice listing and display
- Invoice generation
- Invoice status tracking
- PDF invoice generation
- Invoice search and filtering
2. ViewbillingComponent (viewbilling/viewbilling.component.ts)
- Detailed invoice viewing
- Line item breakdown
- Tax calculation display
- Payment history
- Download options
3. ClosingInvoiceComponent (closing-invoice/closing-invoice.component.ts)
- Month-end invoice closing
- Final invoice generation
- Account balance calculation
- Closing period management
Payment Management
4. PaymentsettingsComponent (paymentsettings/paymentsettings.component.ts)
- Payment configuration
- Auto-payment settings
- Payment schedule management
- Payment method preferences
- Billing cycle configuration
5. StripeCardComponent (stripe-card/stripe-card.component.ts)
- Stripe payment integration
- Credit card processing
- Payment form handling
- Secure payment processing
- PCI compliance features
6. DetailcustomercardComponent (detailcustomercard/detailcustomercard.component.ts)
- Customer payment card details
- Card information display
- Card verification status
- Payment card management
Account Management
7. BillingprofileComponent (billingprofile/billingprofile.component.ts)
- Billing profile setup
- Company information
- Tax ID configuration
- Billing preferences
- Contact information
8. BillingAddressComponent (billing-address/billing-address.component.ts)
- Billing address management
- Address validation
- Multiple address support
- Default address settings
- Address verification
9. AccountledgerComponent (accountledger/accountledger.component.ts)
- Account transaction history
- Credit/debit tracking
- Balance calculations
- Transaction search
- Ledger export functionality
Usage & Reporting
10. CurrentusageComponent (currentusage/currentusage.component.ts)
- Real-time usage monitoring
- Current billing period usage
- Usage alerts and notifications
- Service usage breakdown
- Cost estimation
11. OrderhistoryComponent (orderhistory/orderhistory.component.ts)
- Purchase order history
- Order status tracking
- Order details and line items
- Recurring order management
- Order search and filtering
12. RatedecksComponent (ratedecks/ratedecks.component.ts)
- Rate deck management
- Pricing configuration
- Rate card display
- Tier-based pricing
- Rate history tracking
CDR Processing
13. CdrftpComponent (cdrftp/cdrftp.component.ts)
- Inbound CDR FTP configuration
- CDR file processing
- FTP server settings
- File format configuration
- Processing status monitoring
14. OutboundcdrftpComponent (outboundcdrftp/outboundcdrftp.component.ts)
- Outbound CDR FTP setup
- CDR delivery configuration
- FTP client settings
- Delivery schedule management
- Transfer status tracking
Services
Core Billing Services
1. BillingService (billing.service.ts)
- Main billing operations
- Invoice generation
- Payment processing
- Account management
- API communication
2. BillingconfigService (billingconfig.service.ts)
- Billing configuration management
- System settings
- Default values
- Configuration validation
3. CurrentusageService (currentusage.service.ts)
- Usage data retrieval
- Real-time usage monitoring
- Usage calculations
- Alert management
4. InvoiceService (invoice.service.ts)
- Invoice-specific operations
- Invoice templates
- PDF generation
- Invoice delivery
5. OrderhistoryService (orderhistory.service.ts)
- Order management
- Order processing
- History tracking
- Order analytics
Classes & Models
Business Logic Classes
1. BillingClass (billing.class.ts)
- Core billing logic
- Calculation methods
- Validation rules
- Business rules enforcement
Pipes & Utilities
Data Formatting Pipes
1. FloorDecimal (decimal.pipe.ts)
- Currency formatting
- Decimal precision control
- Financial number formatting
- Locale-specific formatting
2. DateFormatPipe (datepipe.pipe.ts)
- Date formatting for billing
- Invoice date formatting
- Due date calculations
- Billing period formatting
3. OrderPipe (orderPipe.pipe.ts)
- Data sorting functionality
- Custom sorting logic
- Multi-field sorting
- Sort direction control
File Structure
``
src/app/billing/
├── accountledger/
│ ├── accountledger.component.css
│ ├── accountledger.component.html
│ └── accountledger.component.ts
├── billing-address/
│ ├── billing-address.component.css
│ ├── billing-address.component.html
│ └── billing-address.component.ts
├── billingprofile/
│ ├── billingprofile.component.css
│ ├── billingprofile.component.html
│ └── billingprofile.component.ts
├── cdrftp/
│ ├── cdrftp.component.css
│ ├── cdrftp.component.html
│ └── cdrftp.component.ts
├── closing-invoice/
│ ├── closing-invoice.component.css
│ ├── closing-invoice.component.html
│ └── closing-invoice.component.ts
├── currentusage/
│ ├── currentusage.component.css
│ ├── currentusage.component.html
│ └── currentusage.component.ts
├── detailcustomercard/
│ ├── detailcustomercard.component.css
│ ├── detailcustomercard.component.html
│ └── detailcustomercard.component.ts
├── invoices/
│ ├── invoices.component.css
│ ├── invoices.component.html
│ └── invoices.component.ts
├── orderhistory/
│ ├── orderhistory.component.css
│ ├── orderhistory.component.html
│ └── orderhistory.component.ts
├── outboundcdrftp/
│ ├── outboundcdrftp.component.css
│ ├── outboundcdrftp.component.html
│ └── outboundcdrftp.component.ts
├── paymentsettings/
│ ├── paymentsettings.component.css
│ ├── paymentsettings.component.html
│ └── paymentsettings.component.ts
├── ratedecks/
│ ├── ratedecks.component.css
│ ├── ratedecks.component.html
│ └── ratedecks.component.ts
├── stripe-card/
│ ├── stripe-card.component.css
│ ├── stripe-card.component.html
│ └── stripe-card.component.ts
├── viewbilling/
│ ├── viewbilling.component.css
│ ├── viewbilling.component.html
│ └── viewbilling.component.ts
├── billing-routing.module.ts
├── billing.class.ts
├── billing.module.ts
├── billing.service.spec.ts
├── billing.service.ts
├── billingconfig.service.ts
├── currentusage.service.ts
├── datepipe.pipe.ts
├── decimal.pipe.ts
├── invoice.service.ts
└── orderhistory.service.ts
`
Key Dependencies
@angular/forms - Reactive forms for billing data
@angular/common - Common pipes and directives
ng2-search-filter - Search and filtering
@ng-bootstrap/ng-bootstrap - Bootstrap components
ngx-pagination - Pagination support
@angular/material - Material design components
ng-multiselect-dropdown - Multi-select controls
Routes Configuration
The billing module uses the following route structure:
/billing - Main billing dashboard (invoices)
/billing/invoice - Invoice management
/billing/view-billing/:id - Detailed invoice view
/billing/billing-profile - Billing profile setup
/billing/current-usage - Usage monitoring
/billing/account-ledger - Transaction history
/billing/payment-settings - Payment configuration
/billing/rate-decks - Rate management
/billing/order-history - Order tracking
/billing/cdr-ftp - CDR FTP settings
/billing/outbound-cdr-ftp` - Outbound CDR configuration
Key Features
Invoice Management
- Automated invoice generation
- Customizable invoice templates
- PDF invoice creation
- Email invoice delivery
- Invoice status tracking
- Payment due reminders
Payment Processing
- Multiple payment gateways
- Credit card processing
- ACH/Bank transfers
- Recurring payments
- Payment failure handling
- Refund processing
Usage Monitoring
- Real-time usage tracking
- Usage alerts and thresholds
- Detailed usage reports
- Cost prediction
- Usage analytics
Financial Reporting
- Account ledger maintenance
- Transaction history
- Financial statements
- Tax reporting
- Revenue analytics
Integration Points
External Services
- Stripe - Credit card processing
- Payment Gateways - Multiple payment providers
- PDF Generation - Invoice PDF creation
- Email Services - Invoice delivery
- FTP Servers - CDR file exchange
Internal Modules
- User Management - Customer account information
- Reports - Financial reporting
- Dashboard - Billing metrics display
- Notification - Payment alerts
Security Features
1. PCI Compliance - Secure payment processing
2. Data Encryption - Financial data protection
3. Access Control - Role-based billing access
4. Audit Trail - Transaction logging
5. Secure Storage - Payment information security
Usage Guidelines
Billing Workflow
1. Customer usage generates billing data
2. System calculates charges based on rate decks
3. Invoices are generated automatically
4. Payment processing occurs based on settings
5. Account ledger is updated
6. Financial reports are available
Configuration Steps
1. Set up billing profile
2. Configure payment methods
3. Establish rate decks
4. Set up CDR processing
5. Configure automated billing
6. Test payment processing
API Integration
The module integrates with backend billing APIs for:
- Invoice generation and management
- Payment processing
- Usage data retrieval
- Rate deck management
- Account operations
- Financial reporting
Error Handling
Comprehensive error handling for:
- Payment processing failures
- Invoice generation errors
- API communication issues
- Data validation errors
- FTP connection problems
- File processing errors
Performance Considerations
- Efficient data pagination for large datasets
- Cached rate calculations
- Optimized usage queries
- Background invoice processing
- Asynchronous payment processing
Compliance & Regulations
- PCI DSS compliance for payment processing
- Tax calculation accuracy
- Financial reporting standards
- Data retention policies
- Audit trail requirements