This is a simple bot for streaming RMRK BUY operations.
We create a websocket connection to wss://node.rmrk.app (Kusama) and parse the incoming blocks for matching BUY remarks.
Specifically, a BUY is in two parts: a system.remark that calls the BUY, and a balance transfer (actually two balance transfers, one to the seller, and another to the fee-collector). These two operations are batched in a utility.batchAll.
Once we parse for a matching transaction, we create our message, and send it to Twitter.
node+yarn and Twitter API keys
You need to be a Twitter developer which requires applying to Twitter and their acceptance of your use case.
Once you're onboard, create a Standaone App, view the App details, click on Keys and tokens to generate an api key and secret, and an access token and secret.
Clone this repository and run yarn then populate a file .env with your API keys and secrets. For example:
TWITTER_API_KEY="abc"
TWITTER_API_KEY_SECRET="def"
TWITTER_ACCESS_TOKEN="ghi"
TWITTER_ACCESS_TOKEN_SECRET="jkl"
Then run node index.js and watch it work. You'll see a stream of blocks as they are witnessed and parsed:
block: 10237880 (0x6877e02a724970cb1837d8764da9e30206cff6da3c4b0866daf3b61e7773cc62) block: 10237881 (0xf0124a430bea47cb8c1d881fe31c8b3f8becd39cacd2e7da49b368109dfcc530) block: 10237882 (0x2be03fa8b1268ff926b1c20ee20d8eefe3dcc3885b3c68b4232eb1f8c3d6a560) block: 10237883 (0x1743ac5cca676dab4cf6720bd70a5b3a18f6661b13feef196c4cdfdb11d0589c)
The console output is also written to logs.log.
When a sale is witnessed, the log will show the Tweet, and the Tweet will be sent.
You can switch the comment for the websocket connection to run in dev mode, with a local Polkadot node running. You might want to use some of the test interactions here to see it work, or you can generate your own RMRKs with rmrk-tools.