MyCrypto/common/libs/nodes/rpc/requests.ts

import ERC20 from 'libs/erc20';
import {
  CallRequest,
  EstimateGasRequest,
  GetBalanceRequest,
  GetTokenBalanceRequest,
  GetTransactionCountRequest,
  SendRawTxRequest,
  GetCurrentBlockRequest
} from './types';
import { hexEncodeData } from './utils';
import { TxObj } from '../INode';
import { Token } from 'types/network';

export default class RPCRequests {
  public getNetVersion() {
    return { method: 'net_version' };
  }

  public sendRawTx(signedTx: string): SendRawTxRequest | any {
    return {
      method: 'eth_sendRawTransaction',
      params: [signedTx]
    };
  }

  public estimateGas(transaction): EstimateGasRequest | any {
    return {
      method: 'eth_estimateGas',
      params: [transaction]
    };
  }

  public getBalance(address: string): GetBalanceRequest | any {
    return {
      method: 'eth_getBalance',
      params: [hexEncodeData(address), 'pending']
    };
  }

  public ethCall(txObj: TxObj): CallRequest | any {
    return {
      method: 'eth_call',
      params: [txObj, 'pending']
    };
  }

  public getTransactionCount(address: string): GetTransactionCountRequest | any {
    return {
      method: 'eth_getTransactionCount',
      params: [address, 'pending']
    };
  }

  public getTokenBalance(address: string, token: Token): GetTokenBalanceRequest | any {
    return {
      method: 'eth_call',
      params: [
        {
          to: token.address,
          data: ERC20.balanceOf.encodeInput({ _owner: address })
        },
        'pending'
      ]
    };
  }

  public getCurrentBlock(): GetCurrentBlockRequest | any {
    return {
      method: 'eth_blockNumber'
    };
  }
}