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https://github.com/arc-archive/api-request-editor

This component has been moved to api-request. Use the other one instead
https://github.com/arc-archive/api-request-editor

deprecated

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This component has been moved to api-request. Use the other one instead

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# api-request-editor

A web component to render accessible request data editor based on AMF model.

This component implements Material Design styles.

The component contains an UI for editing a HTTP request. It contains:

- URL editor
- Headers editor
- Path/query parameters editor
- Payload (body) editor
- Authorization editor

## Deprecation notice

This component has been moved to `api-request`. Use the other one instead.

## Version compatibility

This version only works with AMF model version 2 (AMF parser >= 4.0.0).
For compatibility with previous model version use `3.x.x` version of the component.

## Usage

### Installation

```
npm install -S @api-components/api-request-editor
```

### Handling request event

The element do not perform a request by its own. It dispatches `api-request` custom event with the request object on the detail property of the event. The hosting application should handle this event and perform the request. When the response is ready the application should dispatch `api-response` property with the same `id` value from the request object. The element clears its state when the event is handled.

You can use `@advanced-rest-client/xhr-simple-request` element to add required logic. However, it does not deal with CORS issues.

Note, if `eventsTarget` property is set, the corresponding events have to be handled at most at this node. It means if the `eventsTarget` is set to a node but the `api-response` event is dispatched on `body` or the `window` then the component won't handle this event.

### AMF model selection

Set `selected` property to the value of an AMF's `@id` property for `supportedOperation` shape. This initializes the component to generate the view for current HTTP method.
The `amf` property also has to be set in order to compute required properties like AMF keys in compact model or server definition.

Use [api-navigation](https://github.com/advanced-rest-client/api-navigation) element to provide the user with accessible navigation through the AMF model.

### Override base URI

Sometimes you may need to override APIs base URI. The element provides `baseUri` property that can be set to replace API's base URI to some other value.

### Allowing custom properties

By default the editor only renders form controls to the ones defined in the API spec file. When model for URI/query parameters, headers, or body is not present then the corresponding editor is not rendered. Also, when the editors are rendered there's no option for the user to defined a parameter that is not defined in the API specification.

To allow the user to add custom properties in the editors use `allowCustom` property. It will force query parameters editor to appear when hidden and the editors renders "add" button in their forms.

### Partial model support

Partial model is generated by the AMF service (by MuleSoft) to reduce data transfer size and to reach the performance budget when initializing applications like API Console.

Partial model contains data that are only required to generate view for current API selection.

The element renders the model that is given to it. However, partial model may be missing information about server, protocols, and API version which are required to properly compute URL value.

Note, this can be ignored when setting `baseUri` as this overrides any API model value.

Pass corresponding model values to `server`, `protocols`, and `version` properties when expecting partial AMF model.

### OAuth 2

You need to set `redirectUri` property to the OAuth 2 redirect popup location. Otherwise authorization won't be initialized.

### Authorization handling

Most authorization methods are working out of the box and are applied to the request when the send function is called. However there are some required dependencies for OAuth 1 that are not included in this element, and special case for Digest authorization method.

#### OAuth 1 dependencies

Because OAuth 1 is rather rare and obsolete authorization method, this component won't include required dependencies. If in your use case you require using OAuth 1 method then include the following libraries into your application before authorization is triggered.

```html

```

The `cryptojslib` is already installed with this module as this is a required dependency.

#### Digest authorization method

Digest authorization method operates directly on the connection by responding to a challenge requested by the server. This requires a series of request - response sent over the same socket. Web platform has no tools to do this programmatically (XHR and Fetch does not allow to directly interact with the socket). Because of that, when the server requires Digest authentication the browser take control over this process and will ask the user for credentials.

The `auth` array may contain `digest` type authorization, if such is defined by the API. This should be used in cases where the request is passed through a proxy or send to a mocking service to generate appropriate request message.

```javascript
const digest = (request.auth || []).find((item) => item.type === 'digest');
if (digest.valid) {
const { settings } = digest;
// settings has user provided information
}
```

### Validation

The element sets `invalid` attribute when the editor contains invalid data. You can use it to style the element for invalid input.

When all forms are reported valid but OAuth 2 has no access token value the element still reports it as valid. When the user try to press the send button it will try to force authorization on currently selected authorization panel before making the request.

```html

api-request-editor[invalid] {
border: 1px red solid;
}

```

### api-request event

Dispatched when the user requests to send current request.

Properties set on the detail object:

- url `String` The request URL. Can be empty string.
- method `String` HTTP method name. Can be empty.
- headers `String` HTTP headers string. Can be empty.
- payload `String|File|FormData` Message body. Can be undefined.
- auth `Array` Optional, authorization settings from the authorization panel.
- id `String` Generated UUID for the request. Each call of the `execute()` function regenerates the `id`.

Use the `id` property to report the response back with `api-response` event.

### In an html file

```html



import '@api-components/api-request-editor/api-request-editor.js';





{
const editor = document.querySelector('api-request-editor');
const model = await generateAmfModel();
editor.amf = model;
editor.selected = '...'; // a method ID from the AMF model

editor.addEventListener('api-request', () => {
// make a request and report the response.
});
}

```

### In a LitElement

```js
import { LitElement, html } from 'lit-element';
import '@api-components/api-request-editor/api-request-editor.js';

class SampleElement extends PolymerElement {
render() {
return html`

`;
}

_apiRequestHandler(e) {
console.log('current request to run', e.detail);
}
}
customElements.define('sample-element', SampleElement);
```

### Working with AMF partial model

Only endpoint model with selection set to a method node that is already in the model make sense.
Because the model don't have server, protocols, and version definition it has to be computed and set manually.

```javascript
const elm = document.querySelector('api-request-editor');
const summaryModel = await downloadPartialApiModelSummary();
const endpointModel = await downloadPartialApiModelEndpoint();
elm.amf = endpointModel; // This must be set before any computation, it contains `@context` property.
elm.selected = '#123'; // Selected node ID, must be method ID that is in endpoint definition.
elm.server = elm._computeServer(summaryModel); // This is element's inherited method
elm.version = conputeApiVersion(summaryModel); // Compute version from `server` model.
elm.protocols = ['http', 'https']; // This is encoded in AMF model.
```

## Development

```sh
git clone https://github.com/advanced-rest-client/api-request-editor
cd api-request-editor
npm install
```

### Running the demo locally

```sh
npm start
```

### Running the tests
```sh
npm test
```

### API components

This components is a part of [API components ecosystem](https://elements.advancedrestclient.com/)

## Breaking Changes in v3

Required dependencies to be included into the app before running this element.

All the dependencies described below are installed with the package.

**Code Mirror support**

CodeMirror + JSON linter (body editor) + headers hints and syntax (headers editor) + basic syntax (body editor).

```html

```

CodeMirror's modes location. May be skipped if all possible modes are already included into the app.

```html

/* global CodeMirror */
CodeMirror.modeURL = 'node_modules/codemirror/mode/%N/%N.js';

```