How ashutoshkumar2103/billingwebapp works
The tree and sampled code indicate a multi-tenant billing and retail-management application, with web and POS interfaces plus platform-side merchant, subscription, and device licensing operations. A central workflow is recording sales and returns, maintaining inventory, and producing invoice documents; purchasing, reporting, catalog management, and administration are additional product areas. The README’s Phase 1 description conflicts with the current tree and sampled runtime code, so the architecture reflects those artifacts. Unsampled controller/service wiring is not inferred.
Main entry points: DocumentEngine.java Document generation · PosAuthService.java POS authentication · BillController.java Sales and returns · LicenseService.java Device licensing
Components 23
Sales and documents
- Sales and returns
src/main/java/com/billingmanagement/controller/BillController.java - Document generation
src/main/java/com/billingmanagement/document/core/DocumentEngine.java - Invoice templates
src/main/java/com/billingmanagement/document/template/TaxInvoiceTemplate.java - Billing records
src/main/java/com/billingmanagement/repository/BillRepository.java - Reports and dashboard
src/main/java/com/billingmanagement/controller/ReportController.java
Retail operations
- Inventory operations
src/main/java/com/billingmanagement/controller/InventoryController.java - Bulk product import
src/main/java/com/billingmanagement/service/ProductBulkExcelService.java - Product records
src/main/java/com/billingmanagement/entity/Product.java - Purchase orders
src/main/java/com/billingmanagement/controller/PurchaseOrderController.java
POS runtime
- POS endpoints
src/main/java/com/billingmanagement/pos/controller/PosBillController.java - POS authentication
src/main/java/com/billingmanagement/pos/service/PosAuthService.java - JWT service
src/main/java/com/billingmanagement/pos/auth/JwtService.java - Device sessions
src/main/java/com/billingmanagement/pos/entity/DeviceSession.java - Request idempotency
src/main/java/com/billingmanagement/pos/service/PosIdempotencyService.java - POS inventory
src/main/java/com/billingmanagement/pos/controller/PosInventoryController.java
Platform administration
- Platform operations
src/main/java/com/billingmanagement/platform/controller/SubscriptionManagementController.java - Merchant provisioning
src/main/java/com/billingmanagement/platform/service/MerchantProvisioningService.java - Device licensing
src/main/java/com/billingmanagement/platform/service/LicenseService.java - License records
src/main/java/com/billingmanagement/platform/repository/LicenseRepository.java
Application foundation
- Spring application
src/main/java/com/billingmanagement/BillingManagementApplication.java
Other components
- Merchant users
- POS operators
- MySQL database
Connections 15
- Merchant users → Sales and returns: submits sales
- Sales and returns → Document generation: requests documents
- Document generation → Invoice templates: generates PDFs
- Document generation → Billing records: loads bills
- Document generation → MySQL database: reads records
- Inventory operations → Product records: looks up products
- POS operators → POS endpoints: submits POS requests
- POS inventory → Product records: looks up products
- POS authentication → Device sessions: stores sessions
- POS authentication → JWT service: issues tokens
- Request idempotency → MySQL database: stores reservations
- Platform operations → Device licensing: manages licenses
- Device licensing → License records: reads and writes
- Merchant provisioning → MySQL database: persists merchant setup
- Spring application → MySQL database: uses persistence