# ${pkg.name}

${badge('npm')} ${badge('npm-license')} ${badge('github-issues')}

${pkg.description}

${badge('nodei')}

${badge('github-stars')}
${badge('github-forks')}

${badge('dependencies')}
${badge('devDependencies')}

## Features

- Returns the required authentication headers including the digital signature.
- Defaults the `Accept` and `Content-Type` headers to `application/json`, which can be changed to `application/xml` if XML is preferred.
- Generates a UUID for the `CorrelationId` if one is not specified for the request.
- Timestamp can be directly set or default to current time.

## Typical Usage

Set the custom headers, then use `Authenticate.sign()` for the specified request.

```javascript
import { Authenticate } from 'wmt-marketplace-auth';

let headers = new Authenticate.Custom;
headers.setCorrelationId('1234hfvgtr');
headers.setConsumer({
    Channel: { Type: '38b7eb6c-3672-4022-93a2-f47794f36338' },
    ConsumerId: 'f091ae58-774c-45ff-9d8a-e30a83344e42'
});

let request = {
  RequestUrl: 'https://marketplace.walmartapis.com/v3/feeds',
  PrivateKey: 'MIIBVgIBADANBgkqhkiG9w0BAQEFAASCAUAwggE8A...',
  RequestMethod: 'GET'
}

let signedHeaders = Authenticate.sign(headers, request);
```

Outputs Authentication headers as an object.

```json
{
  "WM_SVC.NAME": "Walmart Marketplace",
  "WM_QOS.CORRELATION_ID": "1234hfvgtr",
  "WM_SEC.TIMESTAMP": 1523287838530,
  "WM_SEC.AUTH_SIGNATURE": "E1EPWiqwuLYceSVr2XGmljo7qq1+EDI5++1XvFcVf+/klas+mLMAJbDihfAwkjyDxi3WkJDdTCNfle0O+4V/9g==",
  "WM_CONSUMER.CHANNEL.TYPE": "38b7eb6c-3672-4022-93a2-f47794f36338",
  "WM_CONSUMER.ID": "f091ae58-774c-45ff-9d8a-e30a83344e42",
  "Accept": "application/json",
  "Content-Type": "application/json"
}
```

## Options

#### Change the `Accept` or `Content-Type` headers from JSON to XML.

```javascript
headers.Accept = 'application/xml';
headers.ContentType = 'application/xml';
```

#### Set a custom timestamp.

```javascript
headers.setTimestamp(1523287838530);
```

## Install

`npm install --save ${pkg.name}`

## Scripts

${scripts()}

## Dependencies

${dependencies()}

## Contributing

We are always excited when we can make our projects open source and allow contributors to build and work on these components. To make this possible, there are a few things we kindly ask all contributors to understand and follow. Please review the [Contributing Guide](https://www.makanal.eu/contributors/).

## Author

${author()}

## License

${license()}