# ajith104/inventory-management-system architecture > Architecture diagram of the GitHub repository ajith104/inventory-management-system, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-30). It is an AI-made overview: check details against the source. - Interactive diagram: https://gitdiagram.com/ajith104/inventory-management-system - Repository: https://github.com/ajith104/inventory-management-system ## Overview This is an inventory-management web application: users manage products, suppliers, purchases, sales and users, and view dashboard statistics. The Angular frontend routes users to feature screens; feature components use client services, while the Spring backend exposes controllers, applies domain logic and persists entities through repositories. Purchases and sales adjust product stock; dashboard statistics aggregate repository counts. The sampled product client targets a local `/products` API. Other frontend-to-backend links are left unverified because their request details were not excerpted. Main entry points: [`Frontend/src/app/app.routes.ts`](https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/app.routes.ts) (Feature routes), [`Backend/src/main/java/com/inventorymanagement/controller`](https://github.com/ajith104/inventory-management-system/tree/main/Backend/src/main/java/com/inventorymanagement/controller) (REST controllers), [`Backend/src/main/java/com/inventorymanagement/service/DashboardService.java`](https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/service/DashboardService.java) (Dashboard aggregation), [`Backend/src/main/java/com/inventorymanagement/repository/ProductRepository.java`](https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/repository/ProductRepository.java) (Product repository) ## Diagram (Mermaid) ```mermaid flowchart TD subgraph group_frontend["Angular frontend"] node_app["Root app
[app.ts]"] node_routes["Feature routes
[app.routes.ts]"] node_dashboard_ui["Dashboard screen
[dashboard.ts]"] node_products_ui["Products screen
[products.ts]"] node_purchases_ui["Purchases screen
[purchases.ts]"] node_sales_ui["Sales screen
[sales.ts]"] node_suppliers_ui["Suppliers screen
[suppliers.ts]"] node_users_ui["Users screen
[users.ts]"] end subgraph group_clients["Frontend services"] node_dashboard_client["Dashboard client
[dashboard.ts]"] node_product_client["Product client
[product.ts]"] node_purchase_client["Purchase client
[purchase.ts]"] node_sale_client["Sale client
[sale.ts]"] node_supplier_client["Supplier client
[supplier.ts]"] node_user_client["User client
[user.ts]"] end subgraph group_backend["Spring application"] node_controllers["REST controllers"] node_product_logic["Product operations"] node_purchase_logic["Purchase operations"] node_sale_logic["Sale operations
[SaleService.java]"] node_supplier_logic["Supplier operations"] node_user_logic["User operations
[UserService.java]"] node_dashboard_logic["Dashboard aggregation"] node_prediction["Prediction logic"] end subgraph group_domain["Inventory domain"] node_product["Product record
[Product.java]"] node_purchase["Purchase record
[Purchase.java]"] node_sale["Sale record
[Sale.java]"] node_supplier["Supplier record
[Supplier.java]"] node_account["User record
[User.java]"] node_stats["Dashboard stats"] end subgraph group_persistence["Persistence"] node_product_repo[("Product repository")] node_purchase_repo[("Purchase repository")] node_sale_repo[("Sale repository")] node_supplier_repo[("Supplier repository")] node_user_repo[("User repository")] end node_user(("Inventory user")) node_user -->|"uses"| node_app node_app -->|"renders routes"| node_routes node_routes -->|"routes to"| node_dashboard_ui node_routes -->|"routes to"| node_products_ui node_routes -->|"routes to"| node_purchases_ui node_routes -->|"routes to"| node_sales_ui node_routes -->|"routes to"| node_suppliers_ui node_routes -->|"routes to"| node_users_ui node_products_ui -->|"calls"| node_product_client node_purchases_ui -->|"calls"| node_purchase_client node_purchases_ui -->|"loads products"| node_product_client node_sales_ui -->|"calls"| node_sale_client node_sales_ui -->|"loads products"| node_product_client node_suppliers_ui -->|"calls"| node_supplier_client node_dashboard_ui -.->|"loads stats"| node_dashboard_client node_users_ui -.->|"uses"| node_user_client node_product_client -.->|"requests products"| node_controllers node_controllers -->|"delegates"| node_product_logic node_controllers -->|"delegates"| node_purchase_logic node_controllers -->|"delegates"| node_sale_logic node_controllers -->|"delegates"| node_supplier_logic node_controllers -->|"delegates"| node_user_logic node_controllers -.->|"delegates"| node_dashboard_logic node_product_logic -->|"reads and writes"| node_product_repo node_purchase_logic -->|"reads and writes"| node_purchase_repo node_purchase_logic -->|"adjusts stock"| node_product_repo node_sale_logic -->|"reads and writes"| node_sale_repo node_sale_logic -->|"adjusts stock"| node_product_repo node_sale_logic -.->|"uses"| node_prediction node_supplier_logic -->|"reads and writes"| node_supplier_repo node_user_logic -->|"reads and writes"| node_user_repo node_dashboard_logic -->|"counts"| node_product_repo node_dashboard_logic -->|"counts"| node_purchase_repo node_dashboard_logic -->|"counts"| node_sale_repo node_dashboard_logic -->|"counts"| node_supplier_repo node_dashboard_logic -->|"constructs"| node_stats node_product_repo -->|"stores"| node_product node_purchase_repo -->|"stores"| node_purchase node_sale_repo -->|"stores"| node_sale node_supplier_repo -->|"stores"| node_supplier node_user_repo -->|"stores"| node_account click node_app "https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/app.ts" click node_routes "https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/app.routes.ts" click node_dashboard_ui "https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/components/dashboard/dashboard.ts" click node_products_ui "https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/components/products/products.ts" click node_purchases_ui "https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/components/purchases/purchases.ts" click node_sales_ui "https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/components/sales/sales.ts" click node_suppliers_ui "https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/components/suppliers/suppliers.ts" click node_users_ui "https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/components/users/users.ts" click node_dashboard_client "https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/services/dashboard.ts" click node_product_client "https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/services/product.ts" click node_purchase_client "https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/services/purchase.ts" click node_sale_client "https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/services/sale.ts" click node_supplier_client "https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/services/supplier.ts" click node_user_client "https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/services/user.ts" click node_controllers "https://github.com/ajith104/inventory-management-system/tree/main/Backend/src/main/java/com/inventorymanagement/controller" click node_product_logic "https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/service/ProductService.java" click node_purchase_logic "https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/service/PurchaseService.java" click node_sale_logic "https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/service/SaleService.java" click node_supplier_logic "https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/service/SupplierService.java" click node_user_logic "https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/service/UserService.java" click node_dashboard_logic "https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/service/DashboardService.java" click node_prediction "https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/service/PredictionService.java" click node_product "https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/model/Product.java" click node_purchase "https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/model/Purchase.java" click node_sale "https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/model/Sale.java" click node_supplier "https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/model/Supplier.java" click node_account "https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/model/User.java" click node_stats "https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/dto/DashboardStats.java" click node_product_repo "https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/repository/ProductRepository.java" click node_purchase_repo "https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/repository/PurchaseRepository.java" click node_sale_repo "https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/repository/SaleRepository.java" click node_supplier_repo "https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/repository/SupplierRepository.java" click node_user_repo "https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/repository/UserRepository.java" classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554 classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337 classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81 classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a class node_app,node_routes,node_dashboard_ui,node_products_ui,node_purchases_ui,node_sales_ui,node_suppliers_ui,node_users_ui,node_user toneBlue class node_dashboard_client,node_product_client,node_purchase_client,node_sale_client,node_supplier_client,node_user_client toneAmber class node_controllers,node_product_logic,node_purchase_logic,node_sale_logic,node_supplier_logic,node_user_logic,node_dashboard_logic,node_prediction toneMint class node_product,node_purchase,node_sale,node_supplier,node_account,node_stats toneRose class node_product_repo,node_purchase_repo,node_sale_repo,node_supplier_repo,node_user_repo toneIndigo ``` ## Components ### Angular frontend - [Root app](https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/app.ts): `Frontend/src/app/app.ts` - [Feature routes](https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/app.routes.ts): `Frontend/src/app/app.routes.ts` - [Dashboard screen](https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/components/dashboard/dashboard.ts): `Frontend/src/app/components/dashboard/dashboard.ts` - [Products screen](https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/components/products/products.ts): `Frontend/src/app/components/products/products.ts` - [Purchases screen](https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/components/purchases/purchases.ts): `Frontend/src/app/components/purchases/purchases.ts` - [Sales screen](https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/components/sales/sales.ts): `Frontend/src/app/components/sales/sales.ts` - [Suppliers screen](https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/components/suppliers/suppliers.ts): `Frontend/src/app/components/suppliers/suppliers.ts` - [Users screen](https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/components/users/users.ts): `Frontend/src/app/components/users/users.ts` ### Frontend services - [Dashboard client](https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/services/dashboard.ts): `Frontend/src/app/services/dashboard.ts` - [Product client](https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/services/product.ts): `Frontend/src/app/services/product.ts` - [Purchase client](https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/services/purchase.ts): `Frontend/src/app/services/purchase.ts` - [Sale client](https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/services/sale.ts): `Frontend/src/app/services/sale.ts` - [Supplier client](https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/services/supplier.ts): `Frontend/src/app/services/supplier.ts` - [User client](https://github.com/ajith104/inventory-management-system/blob/main/Frontend/src/app/services/user.ts): `Frontend/src/app/services/user.ts` ### Spring application - [REST controllers](https://github.com/ajith104/inventory-management-system/tree/main/Backend/src/main/java/com/inventorymanagement/controller): `Backend/src/main/java/com/inventorymanagement/controller` - [Product operations](https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/service/ProductService.java): `Backend/src/main/java/com/inventorymanagement/service/ProductService.java` - [Purchase operations](https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/service/PurchaseService.java): `Backend/src/main/java/com/inventorymanagement/service/PurchaseService.java` - [Sale operations](https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/service/SaleService.java): `Backend/src/main/java/com/inventorymanagement/service/SaleService.java` - [Supplier operations](https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/service/SupplierService.java): `Backend/src/main/java/com/inventorymanagement/service/SupplierService.java` - [User operations](https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/service/UserService.java): `Backend/src/main/java/com/inventorymanagement/service/UserService.java` - [Dashboard aggregation](https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/service/DashboardService.java): `Backend/src/main/java/com/inventorymanagement/service/DashboardService.java` - [Prediction logic](https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/service/PredictionService.java): `Backend/src/main/java/com/inventorymanagement/service/PredictionService.java` ### Inventory domain - [Product record](https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/model/Product.java): `Backend/src/main/java/com/inventorymanagement/model/Product.java` - [Purchase record](https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/model/Purchase.java): `Backend/src/main/java/com/inventorymanagement/model/Purchase.java` - [Sale record](https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/model/Sale.java): `Backend/src/main/java/com/inventorymanagement/model/Sale.java` - [Supplier record](https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/model/Supplier.java): `Backend/src/main/java/com/inventorymanagement/model/Supplier.java` - [User record](https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/model/User.java): `Backend/src/main/java/com/inventorymanagement/model/User.java` - [Dashboard stats](https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/dto/DashboardStats.java): `Backend/src/main/java/com/inventorymanagement/dto/DashboardStats.java` ### Persistence - [Product repository](https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/repository/ProductRepository.java): `Backend/src/main/java/com/inventorymanagement/repository/ProductRepository.java` - [Purchase repository](https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/repository/PurchaseRepository.java): `Backend/src/main/java/com/inventorymanagement/repository/PurchaseRepository.java` - [Sale repository](https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/repository/SaleRepository.java): `Backend/src/main/java/com/inventorymanagement/repository/SaleRepository.java` - [Supplier repository](https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/repository/SupplierRepository.java): `Backend/src/main/java/com/inventorymanagement/repository/SupplierRepository.java` - [User repository](https://github.com/ajith104/inventory-management-system/blob/main/Backend/src/main/java/com/inventorymanagement/repository/UserRepository.java): `Backend/src/main/java/com/inventorymanagement/repository/UserRepository.java` ### Other components - **Inventory user** ## Connections - Inventory user → Root app: uses - Root app → Feature routes: renders routes (evidence: `Frontend/src/app/app.ts`) - Feature routes → Dashboard screen: routes to (evidence: `Frontend/src/app/app.routes.ts`) - Feature routes → Products screen: routes to (evidence: `Frontend/src/app/app.routes.ts`) - Feature routes → Purchases screen: routes to (evidence: `Frontend/src/app/app.routes.ts`) - Feature routes → Sales screen: routes to (evidence: `Frontend/src/app/app.routes.ts`) - Feature routes → Suppliers screen: routes to (evidence: `Frontend/src/app/app.routes.ts`) - Feature routes → Users screen: routes to (evidence: `Frontend/src/app/app.routes.ts`) - Products screen → Product client: calls (evidence: `Frontend/src/app/components/products/products.ts`) - Purchases screen → Purchase client: calls (evidence: `Frontend/src/app/components/purchases/purchases.ts`) - Purchases screen → Product client: loads products (evidence: `Frontend/src/app/components/purchases/purchases.ts`) - Sales screen → Sale client: calls (evidence: `Frontend/src/app/components/sales/sales.ts`) - Sales screen → Product client: loads products (evidence: `Frontend/src/app/components/sales/sales.ts`) - Suppliers screen → Supplier client: calls (evidence: `Frontend/src/app/components/suppliers/suppliers.ts`) - Dashboard screen → Dashboard client: loads stats - Users screen → User client: uses - Product client → REST controllers: requests products (evidence: `Frontend/src/app/services/product.ts`) - REST controllers → Product operations: delegates (evidence: `Backend/src/main/java/com/inventorymanagement/controller/ProductController.java`) - REST controllers → Purchase operations: delegates (evidence: `Backend/src/main/java/com/inventorymanagement/controller/PurchaseController.java`) - REST controllers → Sale operations: delegates (evidence: `Backend/src/main/java/com/inventorymanagement/controller/SaleController.java`) - REST controllers → Supplier operations: delegates (evidence: `Backend/src/main/java/com/inventorymanagement/controller/SupplierController.java`) - REST controllers → User operations: delegates (evidence: `Backend/src/main/java/com/inventorymanagement/controller/UserController.java`) - REST controllers → Dashboard aggregation: delegates - Product operations → Product repository: reads and writes (evidence: `Backend/src/main/java/com/inventorymanagement/service/ProductService.java`) - Purchase operations → Purchase repository: reads and writes (evidence: `Backend/src/main/java/com/inventorymanagement/service/PurchaseService.java`) - Purchase operations → Product repository: adjusts stock (evidence: `Backend/src/main/java/com/inventorymanagement/service/PurchaseService.java`) - Sale operations → Sale repository: reads and writes (evidence: `Backend/src/main/java/com/inventorymanagement/service/SaleService.java`) - Sale operations → Product repository: adjusts stock (evidence: `Backend/src/main/java/com/inventorymanagement/service/SaleService.java`) - Sale operations → Prediction logic: uses (evidence: `Backend/src/main/java/com/inventorymanagement/service/SaleService.java`) - Supplier operations → Supplier repository: reads and writes (evidence: `Backend/src/main/java/com/inventorymanagement/service/SupplierService.java`) - User operations → User repository: reads and writes (evidence: `Backend/src/main/java/com/inventorymanagement/service/UserService.java`) - Dashboard aggregation → Product repository: counts (evidence: `Backend/src/main/java/com/inventorymanagement/service/DashboardService.java`) - Dashboard aggregation → Purchase repository: counts (evidence: `Backend/src/main/java/com/inventorymanagement/service/DashboardService.java`) - Dashboard aggregation → Sale repository: counts (evidence: `Backend/src/main/java/com/inventorymanagement/service/DashboardService.java`) - Dashboard aggregation → Supplier repository: counts (evidence: `Backend/src/main/java/com/inventorymanagement/service/DashboardService.java`) - Dashboard aggregation → Dashboard stats: constructs (evidence: `Backend/src/main/java/com/inventorymanagement/service/DashboardService.java`) - Product repository → Product record: stores (evidence: `Backend/src/main/java/com/inventorymanagement/repository/ProductRepository.java`) - Purchase repository → Purchase record: stores (evidence: `Backend/src/main/java/com/inventorymanagement/repository/PurchaseRepository.java`) - Sale repository → Sale record: stores (evidence: `Backend/src/main/java/com/inventorymanagement/repository/SaleRepository.java`) - Supplier repository → Supplier record: stores (evidence: `Backend/src/main/java/com/inventorymanagement/repository/SupplierRepository.java`) - User repository → User record: stores (evidence: `Backend/src/main/java/com/inventorymanagement/repository/UserRepository.java`)