# Okanjo API – JavaScript SDK

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This library provides easy integration with the Okanjo platform.

## Installing

Add to your project like so: 

```sh
npm install okanjo
```

Note: this module requires: 

* an API key in order to access the Okanjo platform
* an Okanjo Platform Account in order to access some API routes 

## Breaking Changes

### v5.0.0
- Supports Node.js v12+

## Usage

You can use this module from Node.js or in the browser. 

```js
const OkanjoAPI = require('okanjo'); 
const api = new OkanjoAPI({
    key: 'YOUR_API_KEY_HERE'    // Set your API key here
});
```

> If you use the SDK in the browser, be very mindful of security. 
> Do not publish or expose API keys or account credentials to the public!

When using in the browser, it is expected that you provide a server-side route to proxy API requests. 
This way, API keys, session secrets, etc can all be kept secure from the public. 
By default, the expected route is `POST /rpc`. The browser-based client will serialize the request so that the server
side SDK instance can execute it directly with `api._makeRequest(payload, (err, res) => { ... });`.

## new OkanjoAPI([options])
Creates a new instance of the API client.
* `options` - Configuration options
  * `options.provider` – The communication provider class to use. Defaults to `HttpProvider` for Node.js applications and `FetchProvider` for browser-based invocation.
  
HttpProvider Configuration Options
* `options.key` – The API key to use on requests.   
* `options.sessionToken` – The session token to use on requests.
* `options.timeout` – The client request timeout in milliseconds. Once elapsed, the request will be aborted. Defaults to `30000` (30s).
* `options.userAgent` – The user agent to identify as. Defaults to `okanjo-nodejs/<sdk-version>`.
* `options[api]` – Configuration options for a particular api. Use `api` for core okanjo api, `farm` or `shortcodes`.
  * `options[api].protocol` – The communication protocol to use, either `http` or `https`. Defaults to `https`.
  * `options[api].host` – The remote host to use. Defaults to `api2.okanjo.com` (live).  
  * `options[api].port` – The remote port to use. Defaults to `443`.

FetchProvider/jQueryProvider Configuration Options
* `options.rpcHost` – The server endpoint to proxy requests through. Defaults to `/rpc`. 
* `options.rpcMethod` – The HTTP method the to invoke. Defaults to `POST`.

Common configuration options include:
* `options.onUnauthorizedResponse = (err, query) => { ... }` – Fired when a response comes back 401-Unauthorized

## Making requests

API endpoints are organized by `resource.action` on the client. For example:

```js
api.sessions.create(payload, (err, res) => {
    // err will be set if the request failed in any way
    // res will be set if the request was successful 
});
```

Here, `sessions` is our resource group. `create` is the action. 
The callback returns two parameters, `err` and `res`. If the request failed or any reason, `err` will be set. 
If the request was successful, `res` will be set. Both `err` and `res` are both the response payload from the server.

You can also use promises:

```js
api.sessions.create(payload).execute().then(res => { ... }).catch(err => { ... });
```

With await:

```js
const res = await api.sessions.create(payload).execute();
```

## Aborting requests

When using the FetchProvider, you can provide a controller signal to shutdown a fetch request.

For example:

```js

const controller = new AbortController();
const signal = controller.signal;

api.organizations.list({}).setOptions({ signal }).execute()
    .then(res => {
        // res completed successfully
        // (this won't fire in this example)
    })
    .catch(err => {
        // request failed or was aborted
        // in this example, err looks like this:
        /*
            err = {
                statusCode: 503,
                error: 'The user aborted a request.',
                message: 'Something went wrong'
            }
         */
    })
;

// Abort the request
setTimeout(() => {
    controller.abort();    
}, 100);


```

See the [Okanjo API documentation](https://developer.okanjo.com/api) for information on what routes are available for use.