blockchain-javascript/utils/web3-utils.js

const Web3 = require('web3')
const debug = require('./debug')
const logger = require("./logger")

module.exports = class Web3Utils {
  static buildByWs(ws) {
    if (!Web3Utils.wsWeb3) {
      Web3Utils.wsWeb3 = new Web3(ws)
    }

    return Web3Utils.wsWeb3
  }

  static buildByHttp(http) {
    if (!Web3Utils.httpWeb3) {
      Web3Utils.httpWeb3 = new Web3(http)
    }

    return Web3Utils.httpWeb3
  }

  static buildByIpc(ipc) {
    if (!Web3Utils.ipcWeb3) {
      const net = require('net')
      Web3Utils.ipcWeb3 = new Web3(ipc, net)
    }

    return Web3Utils.ipcWeb3
  }

  static autoCreate(chain) {
    if (debug.isDev()) {
      return Web3Utils.buildByHttp(chain.http)
    } else {
      return Web3Utils.buildByIpc(chain.ipc)
    }
  }
}