# jandogcarl07/group3_section-a architecture

> Architecture diagram of the GitHub repository jandogcarl07/group3_section-a, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-27). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/jandogcarl07/group3_section-a
- Repository: https://github.com/jandogcarl07/group3_section-a

## Overview

This is a small Express API with route modules for users, products, orders, and categories. The principal workflow is an HTTP request entering the server, which dispatches it under a route prefix; unmatched requests receive a JSON 404. The sampled order and category modules contain in-memory example arrays, but no persistence or route handlers are shown. The README provides no product details, and the available excerpts do not establish what the route modules return or how requests produce results.

Main entry points: [`index.js`](https://github.com/jandogcarl07/group3_section-a/blob/main/index.js) (Express server), [`routes/users.routes.js`](https://github.com/jandogcarl07/group3_section-a/blob/main/routes/users.routes.js) (Users routes), [`routes/products.routes.js`](https://github.com/jandogcarl07/group3_section-a/blob/main/routes/products.routes.js) (Products routes), [`routes/orders.routes.js`](https://github.com/jandogcarl07/group3_section-a/blob/main/routes/orders.routes.js) (Orders routes)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_entry["API entry"]
  node_server["Express server<br/>[index.js]"]
  node_notfound["404 handler<br/>[index.js]"]
end

subgraph group_domains["API domains"]
  node_users["Users routes<br/>[users.routes.js]"]
  node_products["Products routes<br/>[products.routes.js]"]
  node_orders["Orders routes<br/>[orders.routes.js]"]
  node_categories["Categories routes"]
end

node_client(("HTTP client"))

node_client -->|"sends requests"| node_server
node_server -->|"mounts /api/users"| node_users
node_server -->|"mounts /api/products"| node_products
node_server -->|"mounts /api/orders"| node_orders
node_server -->|"mounts /api/categories"| node_categories
node_server -->|"handles unmatched"| node_notfound
node_notfound -->|"returns 404 JSON"| node_client

click node_server "https://github.com/jandogcarl07/group3_section-a/blob/main/index.js"
click node_notfound "https://github.com/jandogcarl07/group3_section-a/blob/main/index.js"
click node_users "https://github.com/jandogcarl07/group3_section-a/blob/main/routes/users.routes.js"
click node_products "https://github.com/jandogcarl07/group3_section-a/blob/main/routes/products.routes.js"
click node_orders "https://github.com/jandogcarl07/group3_section-a/blob/main/routes/orders.routes.js"
click node_categories "https://github.com/jandogcarl07/group3_section-a/blob/main/routes/categories.routes.js"

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_server,node_notfound,node_client toneBlue
class node_users,node_products,node_orders,node_categories toneAmber
```

## Components

### API entry

- [Express server](https://github.com/jandogcarl07/group3_section-a/blob/main/index.js): `index.js`
- [404 handler](https://github.com/jandogcarl07/group3_section-a/blob/main/index.js): `index.js`

### API domains

- [Users routes](https://github.com/jandogcarl07/group3_section-a/blob/main/routes/users.routes.js): `routes/users.routes.js`
- [Products routes](https://github.com/jandogcarl07/group3_section-a/blob/main/routes/products.routes.js): `routes/products.routes.js`
- [Orders routes](https://github.com/jandogcarl07/group3_section-a/blob/main/routes/orders.routes.js): `routes/orders.routes.js`
- [Categories routes](https://github.com/jandogcarl07/group3_section-a/blob/main/routes/categories.routes.js): `routes/categories.routes.js`

### Other components

- **HTTP client**

## Connections

- HTTP client → Express server: sends requests
- Express server → Users routes: mounts /api/users
- Express server → Products routes: mounts /api/products
- Express server → Orders routes: mounts /api/orders
- Express server → Categories routes: mounts /api/categories
- Express server → 404 handler: handles unmatched
- 404 handler → HTTP client: returns 404 JSON