**It's time for the last of minor releases of *steemconnect-firebase-functions* version 1.x. In this one, I've added a few features that might be helpful - especially ability to broadcast a downvote, but please, don't use it on this post :)**

![Version 1.3.0](https://res.cloudinary.com/hpiynhbhq/image/upload/v1521590456/bk6x9bqxy1w5vfq9w3p5.png)


## Quick Recap
**steemconnect-firebase-functions** is a library designed to help developers who want to create apps based on SteemConnect and Firebase. The library makes it easy to:
- implement **OAuth2 Authorization Code Grant** (enables user to log in to your app using SteemConnect)
- **broadcast operations** to Steem blockchain (post, comment, upvote, etc.)
- make operations on the **Firebase** products (Authentication, Firestore)

## Links
- **Github**: https://github.com/jakipatryk/steemconnect-firebase-functions
- **SteemProjects**: https://steemprojects.com/projects/p/steemconnect-firebase-functions/
- **NPM**: https://www.npmjs.com/package/steemconnect-firebase-functions

## New Features
Version 1.3.0 only introduces new features, so it won't break existing apps. I'm already working on version 2.0.0, which is going to be a **major** release and I'm super excited about this fact, because this version will bring this library to completely new level. 

Anyway, here is what I did:
- `createVote` function which creates and returns a *vote* operation
- `broadcastDownvote` function
- refactored `broadcastUpvote` to use `createVote`
- `revokeAccessToken` function
- `setUserMetadata` function

Let's take a deeper look at each feature:

#### `createVote`
Following the **DRY** principle (**D**on't **R**epeat **Y**ourself) I've decided to add a vote operation creator function. It creates and returns a `vote` operation, so it can be used either by library consumer or me as I'm developing the **steemconnect-firebase-functions**.

It also helps to achieve my goal to publish creator functions for every operation in the version 2.0.0.

The usage of this function is really simple, for example:
``` javascript
import { createVote } from 'steemconnect-firebase-functions';

const voter = 'jakipatryk';
const author = 'ned';
const permlink = 'i-am-ned';
const weight = 5000; // 50%

const voteOperation = createVote(voter, author, permlink, weight);
```

Your can check how I implemented this feature [here](https://github.com/jakipatryk/steemconnect-firebase-functions/pull/21/commits/b50e1e2e9cfa3e36d09381fbee34289c9c46d4c8).

#### `broadcastDownvote`
Functions should be self-descriptive. I believe this one doesn't break this rule. Now broadcasting a downvote is intuitive, I hope this feature will be useful.

Example usage:
``` javascript
import { broadcastDownvote } from 'steemconnect-firebase-functions';

const accessToken = 'access-token';
const voter = 'jakipatryk';
const author = 'ned';
const permlink = 'steemfest2-closing-dinner';
const weight = 10000; // 100% downvote

broadcastDownvote(accessToken, voter, author, permlink, weight).then(result => {
  console.log(result);
});
```

I used the `createVote` function to make this functionality working, you can check the implementation [here](https://github.com/jakipatryk/steemconnect-firebase-functions/pull/21/commits/46c809e77e09ec16aeacd189c25d617c977076f0).

#### `broadcastUpvote` refactoring
I've refactored the `broadcastUpvote` function to use the `vote` operation creator function. Of course, this change doesn't break the API.

You can check how I refactored this function [here](https://github.com/jakipatryk/steemconnect-firebase-functions/pull/21/commits/8b5f06196fdc5cbaeed370ed90c3a629ef90b25c).

#### `setUserMetadata`
This feature should be used if you want to store some user-related data, but you don't want to store it neither in the blockchain or in your database.

`setUserMetadata` sets user metadata in the user profile on the **SteemConnect**. It also returns the updated user data, but in case you would need to get it later, simply use the `getUserData` function.

Example usage:
``` javascript
import { setUserMetadata } from 'steemconnect-firebase-functions';

const accessToken = '432432543njn5k43b5hj23hjbhj423.543nbrj43btjhb4';
const metadata = {
  banned: false
};

setUserMetadata(accessToken, metadata).then(userData => {
  console.log(userData);
});
```

See how I implemented this feature [here](https://github.com/jakipatryk/steemconnect-firebase-functions/pull/22/commits/f3f7cb12bd25f653d895b571737d717ddb427d1a).

#### `revokeAccessToken`
This feature is probably gonna be used most frequently on the user account deletion. It revokes given access token so it couldn't be used anymore.

Example usage:
``` javascript
import { revokeAccessToken } from 'steemconnect-firebase-functions';

const accessToken = '432432543njn5k43b5hj23hjbhj423.543nbrj43btjhb4';

revokeAccessToken(accessToken).then(result => {
  console.log(result);
});
```

See how I implemented this feature [here](https://github.com/jakipatryk/steemconnect-firebase-functions/pull/23/commits/fdba789799e588e812381b3348124d08237c7e13).

## Conclusion
That's all for now, but you can expect the **version 2.0.0** in a near future, maybe even within this week.

I hope you will have fun developing apps on Firebase using this library ;)

//  **Note for Utopian moderators**:

I couldn't add the third pull request, because I kept getting the 500 error, so the last PR for this update is available there: 
- https://github.com/jakipatryk/steemconnect-firebase-functions/pull/23

<br /><hr/><em>Posted on <a href="https://utopian.io/utopian-io/@jakipatryk/steemconnect-firebase-functions-version-1-3-0-downvoting-setting-user-metadata-and-revoking-access-token">Utopian.io -  Rewarding Open Source Contributors</a></em><hr/>