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https://github.com/syumai/dinatra

Sinatra like light weight web app framework for deno.
https://github.com/syumai/dinatra

deno typescript webserver

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Sinatra like light weight web app framework for deno.

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# dinatra



[![Build Status](https://github.com/syumai/dinatra/workflows/test/badge.svg?branch=master)](https://github.com/syumai/dinatra/actions)



- [Sinatra](http://sinatrarb.com/) like light weight web app framework for [Deno](https://github.com/denoland/deno).

- This app is using [Deno Standard Modules](https://github.com/denoland/deno_std).

- **All features of this app are currently experimental**.



## Usage



`example/index.ts`



```ts

import {

  app,

  get,

  post,

  redirect,

  contentType,

} from "https://denopkg.com/syumai/[email protected]/mod.ts";



app(

  get("/hello", () => "hello"),

  get("/hello/:id", ({ params }) => params.id),

  get(

    "/hello/:id/and/:name",

    ({ params }) => `:id is ${params.id}, :name is ${params.name}`,

  ),

  get("/error", () => [500, "an error has occured"]),

  get("/callName", ({ params }) => `Hi, ${params.name}!`),

  post("/callName", ({ params }) => `Hi, ${params.name}!`),

  get("/foo", () => redirect("/hello", 302)), // redirect from /foo to /hello

  get("/info", () => [

    200,

    contentType("json"),

    JSON.stringify({ app: "dinatra", version: "0.0.1" }),

  ]),

);

```



```console

deno run --allow-net --allow-read index.ts # Or simply: deno run -A index.ts

# App runs on localhost:8080



curl http://localhost:8080/hello

# status: 200

# body: hello



curl http://localhost:8080/hello/1

# status: 200

# body: 1



curl http://localhost:8080/hello/1/and/John

# status: 200

# body: :id is 1, :name is John



curl http://localhost:8080/error

# status: 500

# body: an error has occured



curl http://localhost:8080/callName?name=John

# status: 200

# body: Hi, John!



curl -d 'name=Tom' http://localhost:8080/callName

# status: 200

# body: Hi, Tom!



curl http://localhost:8080/foo

# status: 302

# location: /hello



curl http://localhost:8080/info

# status: 200

# content-type: application/json

# body: {"app":"dinatra","version":"0.0.1"}

```



### Async Handler



- You can use async function as handler.



[`example/template/index.ts`](https://github.com/syumai/dinatra/tree/master/example/template)



```ts

const { cwd, open } = Deno;

import { app, get } from 'https://denopkg.com/syumai/dinatra/mod.ts';



const currentDir = cwd();

const htmlPath = `${currentDir}/index.html`;



app(get('/', async () => await open(htmlPath)));

```



### Template



- You can use [dejs](https://github.com/syumai/dejs) (ejs for deno) as dinatra's template engine.



```ts

import { renderFile } from 'https://deno.land/x/dejs/dejs.ts';



app(

  get('/', async () => await renderFile('index.ejs', { message: 'example' }))

);

```



### Host static files



- Requires `--allow-read`, e.g. `deno run --allow-read --allow-net app.ts`

- Files in `./public` directory will be served static.



### Close server



```ts

import { app, get } from 'https://denopkg.com/syumai/dinatra/mod.ts';



const s = app(get('/', () => 'hello'));



setTimeout(() => {

  s.close(); // close server after 5s.

}, 5000);

```



## Flags



```console

deno run -A index.ts -p 8000 # or --port=8000

# App runs on localhost:8000

```



## Initialization options



### Customize static file hosting option



```ts

import { defaultPort } from 'https://denopkg.com/syumai/dinatra/constants.ts';

import { App, get } from 'https://denopkg.com/syumai/dinatra/mod.ts';



const app = new App(

  defaultPort, // portNumber (number)

  'dist', // public file directory's path (string)

  false // option to enable static file hosting (boolean)

);



app.register(get('/hello', () => 'hello'));

```



## Response Types



```ts

// HeaderMap is a type of response headers.

type HeaderMap =

  | Headers

  | {

      [key: string]: any;

    };



// ResponseBody is a type of response body.

type ResponseBody = string | ReadCloser | Deno.Reader;



/*

 *  Types of Response

 */



// StatusHeadersBodyResponse is a response with status code, headers, body.

type StatusHeadersBodyResponse = [number, HeaderMap, ResponseBody];



// StatusBodyResponse is a response with status code, body.

type StatusBodyResponse = [number, ResponseBody];



// Response is a type of response.

export type Response =

  | StatusHeadersBodyResponse

  | StatusBodyResponse

  | number // HTTP status code only

  | ResponseBody; // Response body only



// Response interface

interface HTTPResponse {

  status?: number;

  headers?: Headers;

  body?: Uint8Array | Deno.ReadCloser | Deno.Reader;

}

```



## Status



### Request Params



- [x] URL query params (for GET)

- [x] route params (like: `/users/:user_id/posts`)

- [x] x-www-form-urlencoded

- [x] redirect

- [x] application/json

- [ ] application/octet-stream



## Development



### Update module



- Please use [dem](https://github.com/syumai/dem)



```

dem update https://deno.land/[email protected]

```



### Lint



- `make lint`



### Format



- `make fmt`



### Testing



- `make test`



## Author



syumai



## License



MIT