# sullaspqr/chess-backend architecture

> Architecture diagram of the GitHub repository sullaspqr/chess-backend, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-11-14). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/sullaspqr/chess-backend
- Repository: https://github.com/sullaspqr/chess-backend

## Overview

This is a small Express API for managing chess-player records. Clients send JSON requests to list, look up, create, update, or delete records; the handlers operate directly on an in-memory array and return JSON responses. The same server exposes generated Swagger documentation through Swagger UI. The only runtime implementation is in server.js; the repository shows no persistent database or separate domain layer.

Main entry points: [`server.js`](https://github.com/sullaspqr/chess-backend/blob/main/server.js) (Express routes)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_api["API and docs"]
  node_server["Express routes<br/>[server.js]"]
  node_swagger["Swagger UI<br/>[server.js]"]
end

subgraph group_state["In-memory records"]
  node_records[("Chess records<br/>[server.js]")]
end

node_client(("API client"))

node_client -->|"sends requests"| node_server
node_server -->|"reads and mutates"| node_records
node_server -->|"returns JSON"| node_client
node_client -->|"opens docs"| node_swagger

click node_server "https://github.com/sullaspqr/chess-backend/blob/main/server.js"
click node_swagger "https://github.com/sullaspqr/chess-backend/blob/main/server.js"
click node_records "https://github.com/sullaspqr/chess-backend/blob/main/server.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_swagger,node_client toneBlue
class node_records toneAmber
```

## Components

### API and docs

- [Express routes](https://github.com/sullaspqr/chess-backend/blob/main/server.js): `server.js`
- [Swagger UI](https://github.com/sullaspqr/chess-backend/blob/main/server.js): `server.js`

### In-memory records

- [Chess records](https://github.com/sullaspqr/chess-backend/blob/main/server.js): `server.js`

### Other components

- **API client**

## Connections

- API client → Express routes: sends requests (evidence: `server.js`)
- Express routes → Chess records: reads and mutates (evidence: `server.js`)
- Express routes → API client: returns JSON (evidence: `server.js`)
- API client → Swagger UI: opens docs (evidence: `server.js`)