# algoalgo007/shop architecture

> Architecture diagram of the GitHub repository algoalgo007/shop, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-11-15). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/algoalgo007/shop
- Repository: https://github.com/algoalgo007/shop

## Overview

This is a Spring-based online shop: shoppers browse items, manage a cart, and place or review orders; administrators manage item listings and images. The main purchase path runs from web controllers through cart and order services into repository-backed domain state. Member registration/authentication and catalog administration are distinct capabilities. Item images are uploaded through a file service. The README is empty, so capabilities and links here are based on the source index and excerpts; some controller and security wiring is not sampled.

Main entry points: [`src/main/java/com/shop/service/ItemService.java`](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/service/ItemService.java) (Item service), [`src/main/java/com/shop/service/CartService.java`](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/service/CartService.java) (Cart service), [`src/main/java/com/shop/service/OrderService.java`](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/service/OrderService.java) (Order service), [`src/main/java/com/shop/controller/ItemController.java`](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/controller/ItemController.java) (Item endpoints)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_web["Web and security"]
  node_item_web["Item endpoints"]
  node_main_web["Storefront endpoints"]
  node_cart_web["Cart endpoints"]
  node_order_web["Order endpoints"]
  node_member_web["Member endpoints"]
  node_security["Authentication config"]
end

subgraph group_catalog["Catalog management"]
  node_item_service["Item service<br/>[ItemService.java]"]
  node_item_search["Catalog search"]
  node_item_repository["Item repository"]
  node_item_images["Image service"]
  node_file_service["File storage helper<br/>[FileService.java]"]
  node_item_data[("Items and images<br/>[Item.java]")]
end

subgraph group_commerce["Cart and orders"]
  node_cart_service["Cart service<br/>[CartService.java]"]
  node_cart_repository["Cart repositories"]
  node_cart_data[("Cart state<br/>[CartItem.java]")]
  node_order_service["Order service<br/>[OrderService.java]"]
  node_order_repository["Order repository"]
  node_order_data[("Orders and lines<br/>[Order.java]")]
end

subgraph group_identity["Member identity and state"]
  node_member_service["Member service<br/>[MemberService.java]"]
  node_member_repository["Member repository"]
  node_member_data[("Member records<br/>[Member.java]")]
end

node_shopper(("Shopper"))
node_admin(("Administrator"))

node_shopper -.->|"browses"| node_main_web
node_shopper -.->|"manages cart"| node_cart_web
node_shopper -.->|"places orders"| node_order_web
node_admin -.->|"manages items"| node_item_web
node_item_web -->|"calls"| node_item_service
node_main_web -->|"calls"| node_item_service
node_cart_web -->|"calls"| node_cart_service
node_order_web -->|"calls"| node_order_service
node_member_web -->|"calls"| node_member_service
node_item_service -->|"reads and saves"| node_item_repository
node_item_service -->|"delegates images"| node_item_images
node_item_service -.->|"searches listings"| node_item_search
node_item_images -->|"uploads and deletes"| node_file_service
node_cart_service -->|"reads and writes"| node_cart_repository
node_cart_service -->|"submits cart order"| node_order_service
node_order_service -->|"saves and reads"| node_order_repository
node_member_service -->|"uses"| node_member_repository
node_item_repository -->|"persists"| node_item_data
node_cart_repository -->|"queries"| node_cart_data
node_order_repository -->|"queries"| node_order_data
node_member_repository -->|"persists"| node_member_data
node_security -.->|"protects routes"| node_member_web

click node_item_web "https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/controller/ItemController.java"
click node_main_web "https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/controller/MainController.java"
click node_cart_web "https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/controller/CartController.java"
click node_order_web "https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/controller/OrderController.java"
click node_member_web "https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/controller/MemberController.java"
click node_security "https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/config/SecurityConfig.java"
click node_item_service "https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/service/ItemService.java"
click node_item_search "https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/repository/ItemRepositoryCustomImpl.java"
click node_item_repository "https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/repository/ItemRepository.java"
click node_item_images "https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/service/ItemImgService.java"
click node_file_service "https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/service/FileService.java"
click node_item_data "https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/entity/Item.java"
click node_cart_service "https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/service/CartService.java"
click node_cart_repository "https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/repository/CartItemRepository.java"
click node_cart_data "https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/entity/CartItem.java"
click node_order_service "https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/service/OrderService.java"
click node_order_repository "https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/repository/OrderRepository.java"
click node_order_data "https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/entity/Order.java"
click node_member_service "https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/service/MemberService.java"
click node_member_repository "https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/repository/MemberRepository.java"
click node_member_data "https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/entity/Member.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_item_web,node_main_web,node_cart_web,node_order_web,node_member_web,node_security toneBlue
class node_item_service,node_item_search,node_item_repository,node_item_images,node_file_service,node_item_data toneAmber
class node_cart_service,node_cart_repository,node_cart_data,node_order_service,node_order_repository,node_order_data toneMint
class node_member_service,node_member_repository,node_member_data toneRose
class node_shopper,node_admin toneIndigo
```

## Components

### Web and security

- [Item endpoints](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/controller/ItemController.java): `src/main/java/com/shop/controller/ItemController.java`
- [Storefront endpoints](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/controller/MainController.java): `src/main/java/com/shop/controller/MainController.java`
- [Cart endpoints](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/controller/CartController.java): `src/main/java/com/shop/controller/CartController.java`
- [Order endpoints](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/controller/OrderController.java): `src/main/java/com/shop/controller/OrderController.java`
- [Member endpoints](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/controller/MemberController.java): `src/main/java/com/shop/controller/MemberController.java`
- [Authentication config](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/config/SecurityConfig.java): `src/main/java/com/shop/config/SecurityConfig.java`

### Catalog management

- [Item service](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/service/ItemService.java): `src/main/java/com/shop/service/ItemService.java`
- [Catalog search](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/repository/ItemRepositoryCustomImpl.java): `src/main/java/com/shop/repository/ItemRepositoryCustomImpl.java`
- [Item repository](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/repository/ItemRepository.java): `src/main/java/com/shop/repository/ItemRepository.java`
- [Image service](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/service/ItemImgService.java): `src/main/java/com/shop/service/ItemImgService.java`
- [File storage helper](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/service/FileService.java): `src/main/java/com/shop/service/FileService.java`
- [Items and images](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/entity/Item.java): `src/main/java/com/shop/entity/Item.java`

### Cart and orders

- [Cart service](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/service/CartService.java): `src/main/java/com/shop/service/CartService.java`
- [Cart repositories](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/repository/CartItemRepository.java): `src/main/java/com/shop/repository/CartItemRepository.java`
- [Cart state](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/entity/CartItem.java): `src/main/java/com/shop/entity/CartItem.java`
- [Order service](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/service/OrderService.java): `src/main/java/com/shop/service/OrderService.java`
- [Order repository](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/repository/OrderRepository.java): `src/main/java/com/shop/repository/OrderRepository.java`
- [Orders and lines](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/entity/Order.java): `src/main/java/com/shop/entity/Order.java`

### Member identity and state

- [Member service](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/service/MemberService.java): `src/main/java/com/shop/service/MemberService.java`
- [Member repository](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/repository/MemberRepository.java): `src/main/java/com/shop/repository/MemberRepository.java`
- [Member records](https://github.com/algoalgo007/shop/blob/main/src/main/java/com/shop/entity/Member.java): `src/main/java/com/shop/entity/Member.java`

### Other components

- **Shopper**
- **Administrator**

## Connections

- Shopper → Storefront endpoints: browses
- Shopper → Cart endpoints: manages cart
- Shopper → Order endpoints: places orders
- Administrator → Item endpoints: manages items
- Item endpoints → Item service: calls (evidence: `src/main/java/com/shop/controller/ItemController.java`)
- Storefront endpoints → Item service: calls (evidence: `src/main/java/com/shop/controller/MainController.java`)
- Cart endpoints → Cart service: calls (evidence: `src/main/java/com/shop/controller/CartController.java`)
- Order endpoints → Order service: calls (evidence: `src/main/java/com/shop/controller/OrderController.java`)
- Member endpoints → Member service: calls (evidence: `src/main/java/com/shop/controller/MemberController.java`)
- Item service → Item repository: reads and saves (evidence: `src/main/java/com/shop/service/ItemService.java`)
- Item service → Image service: delegates images (evidence: `src/main/java/com/shop/service/ItemService.java`)
- Item service → Catalog search: searches listings
- Image service → File storage helper: uploads and deletes (evidence: `src/main/java/com/shop/service/ItemImgService.java`)
- Cart service → Cart repositories: reads and writes (evidence: `src/main/java/com/shop/service/CartService.java`)
- Cart service → Order service: submits cart order (evidence: `src/main/java/com/shop/service/CartService.java`)
- Order service → Order repository: saves and reads (evidence: `src/main/java/com/shop/service/OrderService.java`)
- Member service → Member repository: uses (evidence: `src/main/java/com/shop/service/MemberService.java`)
- Item repository → Items and images: persists (evidence: `src/main/java/com/shop/repository/ItemRepository.java`)
- Cart repositories → Cart state: queries (evidence: `src/main/java/com/shop/repository/CartItemRepository.java`)
- Order repository → Orders and lines: queries (evidence: `src/main/java/com/shop/repository/OrderRepository.java`)
- Member repository → Member records: persists (evidence: `src/main/java/com/shop/repository/MemberRepository.java`)
- Authentication config → Member endpoints: protects routes