# dedsking/test-nutech architecture

> Architecture diagram of the GitHub repository dedsking/test-nutech, 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/dedsking/test-nutech
- Repository: https://github.com/dedsking/test-nutech

## Overview

This is an Express REST API for membership, profile management, service information, and account transactions. The principal flow is an HTTP request routed through authentication where required, handled by a controller, and fulfilled through models backed by MySQL. Transaction stages include balance lookup, top-up or service payment, and history retrieval. Profile-image uploads are handled by route-level Multer storage. Several model implementations and the README are unavailable, so uncertain database wiring is omitted.

Main entry points: [`routes/index.js`](https://github.com/dedsking/test-nutech/blob/main/routes/index.js) (Route handlers), [`controller/transactionController.js`](https://github.com/dedsking/test-nutech/blob/main/controller/transactionController.js) (Transaction controller), [`model/auth.js`](https://github.com/dedsking/test-nutech/blob/main/model/auth.js) (Authentication model), [`controller/membershipController.js`](https://github.com/dedsking/test-nutech/blob/main/controller/membershipController.js) (Membership controller)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_api["API routing"]
  node_server["Express server<br/>[server.js]"]
  node_routes["Route handlers<br/>[index.js]"]
end

subgraph group_membership["Membership"]
  node_authmw["JWT middleware<br/>[middlewareAuth.js]"]
  node_membershipctl["Membership controller"]
  node_authmodel["Authentication model<br/>[auth.js]"]
  node_usersmodel["User model<br/>[users.js]"]
  node_uploads["Profile uploads<br/>[index.js]"]
end

subgraph group_information["Service information"]
  node_informationctl["Information controller"]
  node_informationmodel["Information model<br/>[information.js]"]
end

subgraph group_transactions["Transactions and storage"]
  node_transactionctl["Transaction controller"]
  node_transactionmodel["Transaction model<br/>[transaction.js]"]
  node_invoice["Invoice generator<br/>[generateInvoice.js]"]
  node_mysql[("MySQL database")]
  node_connection["MySQL connection pool<br/>[database.js]"]
end

node_client(("API client"))

node_client -->|"sends requests"| node_server
node_server -->|"mounts routes"| node_routes
node_routes -->|"dispatches membership"| node_membershipctl
node_routes -->|"dispatches information"| node_informationctl
node_routes -->|"dispatches transactions"| node_transactionctl
node_routes -->|"protects routes"| node_authmw
node_routes -->|"stores uploaded files"| node_uploads
node_membershipctl -->|"checks and registers"| node_authmodel
node_membershipctl -->|"updates profiles"| node_usersmodel
node_authmodel -->|"queries through"| node_connection
node_connection -->|"connects to"| node_mysql
node_informationctl -->|"checks identity"| node_authmodel
node_informationctl -->|"fetches information"| node_informationmodel
node_transactionctl -->|"checks identity and balance"| node_authmodel
node_transactionctl -->|"checks service"| node_informationmodel
node_transactionctl -->|"records and reads"| node_transactionmodel
node_transactionctl -->|"updates balance"| node_usersmodel
node_transactionmodel -->|"generates invoice"| node_invoice
node_transactionmodel -->|"queries through"| node_connection

click node_server "https://github.com/dedsking/test-nutech/blob/main/server.js"
click node_routes "https://github.com/dedsking/test-nutech/blob/main/routes/index.js"
click node_authmw "https://github.com/dedsking/test-nutech/blob/main/middleware/middlewareAuth.js"
click node_membershipctl "https://github.com/dedsking/test-nutech/blob/main/controller/membershipController.js"
click node_authmodel "https://github.com/dedsking/test-nutech/blob/main/model/auth.js"
click node_usersmodel "https://github.com/dedsking/test-nutech/blob/main/model/users.js"
click node_informationctl "https://github.com/dedsking/test-nutech/blob/main/controller/informationController.js"
click node_informationmodel "https://github.com/dedsking/test-nutech/blob/main/model/information.js"
click node_transactionctl "https://github.com/dedsking/test-nutech/blob/main/controller/transactionController.js"
click node_transactionmodel "https://github.com/dedsking/test-nutech/blob/main/model/transaction.js"
click node_invoice "https://github.com/dedsking/test-nutech/blob/main/utils/generateInvoice.js"
click node_connection "https://github.com/dedsking/test-nutech/blob/main/config/database.js"
click node_uploads "https://github.com/dedsking/test-nutech/blob/main/routes/index.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_routes,node_client toneBlue
class node_authmw,node_membershipctl,node_authmodel,node_usersmodel,node_uploads toneAmber
class node_informationctl,node_informationmodel toneMint
class node_transactionctl,node_transactionmodel,node_invoice,node_mysql,node_connection toneRose
```

## Components

### API routing

- [Express server](https://github.com/dedsking/test-nutech/blob/main/server.js): `server.js`
- [Route handlers](https://github.com/dedsking/test-nutech/blob/main/routes/index.js): `routes/index.js`

### Membership

- [JWT middleware](https://github.com/dedsking/test-nutech/blob/main/middleware/middlewareAuth.js): `middleware/middlewareAuth.js`
- [Membership controller](https://github.com/dedsking/test-nutech/blob/main/controller/membershipController.js): `controller/membershipController.js`
- [Authentication model](https://github.com/dedsking/test-nutech/blob/main/model/auth.js): `model/auth.js`
- [User model](https://github.com/dedsking/test-nutech/blob/main/model/users.js): `model/users.js`
- [Profile uploads](https://github.com/dedsking/test-nutech/blob/main/routes/index.js): `routes/index.js`

### Service information

- [Information controller](https://github.com/dedsking/test-nutech/blob/main/controller/informationController.js): `controller/informationController.js`
- [Information model](https://github.com/dedsking/test-nutech/blob/main/model/information.js): `model/information.js`

### Transactions and storage

- [Transaction controller](https://github.com/dedsking/test-nutech/blob/main/controller/transactionController.js): `controller/transactionController.js`
- [Transaction model](https://github.com/dedsking/test-nutech/blob/main/model/transaction.js): `model/transaction.js`
- [Invoice generator](https://github.com/dedsking/test-nutech/blob/main/utils/generateInvoice.js): `utils/generateInvoice.js`
- **MySQL database**
- [MySQL connection pool](https://github.com/dedsking/test-nutech/blob/main/config/database.js): `config/database.js`

### Other components

- **API client**

## Connections

- API client → Express server: sends requests
- Express server → Route handlers: mounts routes
- Route handlers → Membership controller: dispatches membership
- Route handlers → Information controller: dispatches information
- Route handlers → Transaction controller: dispatches transactions
- Route handlers → JWT middleware: protects routes
- Route handlers → Profile uploads: stores uploaded files
- Membership controller → Authentication model: checks and registers
- Membership controller → User model: updates profiles
- Authentication model → MySQL connection pool: queries through
- MySQL connection pool → MySQL database: connects to
- Information controller → Authentication model: checks identity
- Information controller → Information model: fetches information
- Transaction controller → Authentication model: checks identity and balance
- Transaction controller → Information model: checks service
- Transaction controller → Transaction model: records and reads
- Transaction controller → User model: updates balance
- Transaction model → Invoice generator: generates invoice
- Transaction model → MySQL connection pool: queries through