bandchain_oracle_data_request_full.js

const { Obi } = require('@bandprotocol/obi.js');
const BandChain = require('@bandprotocol/bandchain.js');

// BandChain devnet endpoint URL
const endpoint = 'http://guanyu-devnet.bandchain.org/rest';
// Mnemonic of the account to make the query from.
const mnemonic =
  'ask jar coast prison educate decide elephant find pigeon truth reason double figure enroll scheme melt soldier damage debris recall brief jeans million essence';

// Request parameters
const oracleScriptID = 1;
const minCount = 1;
const askCount = 2;
const gasAmount = 100;
const gasLimit = 300000;

(async () => {
  // Instantiating BandChain with REST endpoint
  const bandchain = new BandChain(endpoint);
  // Create an instance of OracleScript with the script ID
  const oracleScript = await bandchain.getOracleScript(oracleScriptID);

  // Initiate obi object to be used for decoding the result later
  const obi = new Obi(oracleScript.schema);

  // Create a new request, which will block into the tx is confirmed
  try {
    const requestID = await bandchain.submitRequestTx(
      oracleScript,
      { symbol: 'BTC', multiplier: 10000 },
      { minCount, askCount },
      mnemonic,
      gasAmount,
      gasLimit
    );

    // Get request result
    const responseStruct = await bandchain.getRequestResult(requestID);
    const encodedOutput = responseStruct.ResponsePacketData['result'];
    const decodedOutput = obi.decodeOutput(Buffer.from(encodedOutput, 'base64'));
    console.log(decodedOutput);
  } catch (e) {
    // Something went wrong (e.g. specified time is in the future)
    console.error('Data request failed with reason: ', e);
  }
})();