test-triam-base-contract/src/contract_base/info.js

Low level triam smart cotnract support library

const http = require ('http');

const getBalance = function (_account) {
  return new Promise ((resolve, reject) => {
    http.get (`http://${process.env['HOST']}:${process.env['PORT']}/balance?id=${_account}`, function (res) {
      const {statusCode} = res;
      const contentType = res.headers['content-type'];
      
      let error;
      if (statusCode !== 200) {
        error = new Error ('Request Failed.\n' +
          `Status Code: ${statusCode}`);
      } else if (!/^application\/json/.test (contentType)) {
        error = new Error ('Invalid content-type.\n' +
          `Expected application/json but received ${contentType}`);
      }
      if (error) {
        res.resume ();
        return;
      }
      
      res.setEncoding ('utf8');
      let rawData = '';
      res.on ('data', function (chunk) {
        rawData += chunk;
      });
      res.on ('end', function () {
        try {
          const parsedData = JSON.parse (rawData);
          resolve (parsedData);
        } catch (e) {
          reject (e.message);
        }
      });
    });
  });
};

const getLedgerSeq = function () {
  return new Promise ((resolve, reject) => {
    http.get (`http://${process.env['HOST']}:${process.env['PORT']}/ledger`, function (res) {
      const {statusCode} = res;
      const contentType = res.headers['content-type'];
      
      let error;
      if (statusCode !== 200) {
        error = new Error ('Request Failed.\n' +
          `Status Code: ${statusCode}`);
      } else if (!/^application\/json/.test (contentType)) {
        error = new Error ('Invalid content-type.\n' +
          `Expected application/json but received ${contentType}`);
      }
      if (error) {
        res.resume ();
        return;
      }
      
      res.setEncoding ('utf8');
      let rawData = '';
      res.on ('data', function (chunk) {
        rawData += chunk;
      });
      res.on ('end', function () {
        try {
          const parsedData = JSON.parse (rawData);
          resolve (parsedData);
        } catch (e) {
          reject (e.message);
        }
      });
    });
  });
};

const getState = function (_account) {
  return new Promise ((resolve, reject) => {
    http.get (`http://${process.env['HOST']}:${process.env['PORT']}/state?id=${_account}`, function (res) {
      const {statusCode} = res;
      const contentType = res.headers['content-type'];
      
      let error;
      if (statusCode !== 200) {
        error = new Error ('Request Failed.\n' +
          `Status Code: ${statusCode}`);
      } else if (!/^application\/json/.test (contentType)) {
        error = new Error ('Invalid content-type.\n' +
          `Expected application/json but received ${contentType}`);
      }
      if (error) {
        res.resume ();
        return;
      }
      
      res.setEncoding ('utf8');
      let rawData = '';
      res.on ('data', function (chunk) {
        rawData += chunk;
      });
      res.on ('end', function () {
        try {
          const parsedData = JSON.parse (rawData);
          resolve (parsedData);
        } catch (e) {
          reject (e.message);
        }
      });
    });
  });
};
const getBalanceAsset = function (_assetCode,_issuer,  _account) {
  return new Promise ((resolve, reject) => {
    http.get (`http://${process.env['HOST']}:${process.env['PORT']}/gettrustorbalance?assetcode=${_assetCode}&issuer=${_issuer}&accountid=${_account}`, function (res) {
      const {statusCode} = res;
      const contentType = res.headers['content-type'];
      
      let error;
      if (statusCode !== 200) {
        error = new Error ('Request Failed.\n' +
          `Status Code: ${statusCode}`);
      } else if (!/^application\/json/.test (contentType)) {
        error = new Error ('Invalid content-type.\n' +
          `Expected application/json but received ${contentType}`);
      }
      if (error) {
        res.resume ();
        return;
      }
      
      res.setEncoding ('utf8');
      let rawData = '';
      res.on ('data', function (chunk) {
        rawData += chunk;
      });
      res.on ('end', function () {
        try {
          const parsedData = JSON.parse (rawData);
          resolve (parsedData);
        } catch (e) {
          reject (e.message);
        }
      });
    });
  });
};
module.exports = {
  getState: getState,
  getBalance: getBalance,
  getLedgerSeq: getLedgerSeq,
  getBalanceAsset: getBalanceAsset
};