const SimpleWeb3 = require('./simple-web3')
const Config = require('../../config/config')

class IERC20 {}

IERC20.batchInit = async function (context, ierc20TokenAddressList) {
  IERC20.contractMap = {}

  // 初始化token
  for (const tokenHash of ierc20TokenAddressList) {
    await IERC20.initTokenByHash(context, tokenHash)
  }
}

IERC20.initTokenByHash = async function (context, tokenHash) {
  // 合约初始化
  IERC20.contractMap[tokenHash] = new SimpleWeb3.web3.eth.Contract(Config.BASE_ABI, tokenHash)
}

IERC20.getTokenName = async function (tokenHash) {
  return await IERC20.contractMap[tokenHash].methods.name().call()
}

IERC20.getTokenSymbol = async function (tokenHash) {
  return await IERC20.contractMap[tokenHash].methods.symbol().call()
}

IERC20.getDecimals = async function (tokenHash) {
  return await IERC20.contractMap[tokenHash].methods.decimals().call()
}

module.exports = IERC20