(Feature) - #1531 EWC estimate fee on modal (#1543)

* Add fixed price in gas to ewc configuration

src/config/networks/energy_web_chain.ts

@@ -1,13 +1,16 @@
 import EwcLogo from 'src/config/assets/token_ewc.svg'
 import { EnvironmentSettings, ETHEREUM_NETWORK, NetworkConfig, WALLETS } from 'src/config/networks/network.d'
 
+// @todo (agustin) we need to use fixed gasPrice because the oracle is not working right now and it's returning 0
+// once the oracle is fixed we need to remove the fixed value
 const baseConfig: EnvironmentSettings = {
-  txServiceUrl: 'https://safe-transaction.ewc.gnosis.io/api/v1',  
+  txServiceUrl: 'https://safe-transaction.ewc.gnosis.io/api/v1',
   safeAppsUrl: 'https://safe-apps.dev.gnosisdev.com',
   gasPriceOracle: {
     url: 'https://station.energyweb.org',
     gasParameter: 'standard',
   },
+  gasPrice: 1e6,
   rpcServiceUrl: 'https://rpc.energyweb.org',
   networkExplorerName: 'Energy web explorer',
   networkExplorerUrl: 'https://explorer.energyweb.org',

src/logic/wallets/ethTransactions.ts

@@ -4,7 +4,6 @@ import { BigNumber } from 'bignumber.js'
 import { getWeb3, web3ReadOnly } from 'src/logic/wallets/getWeb3'
 import { getGasPrice, getGasPriceOracle } from 'src/config'
 
-// const MAINNET_NETWORK = 1
 export const EMPTY_DATA = '0x'
 
 export const checkReceiptStatus = async (hash) => {
@@ -28,16 +27,6 @@ export const checkReceiptStatus = async (hash) => {
 }
 
 export const calculateGasPrice = async (): Promise<string> => {
-  /*
-  const web3 = getWeb3()
-  const { network } = web3.version
-  const isMainnet = MAINNET_NETWORK === network
-
-  const url = isMainnet
-    ? 'https://safe-relay.staging.gnosisdev.com/api/v1/gas-station/'
-    : 'https://safe-relay.dev.gnosisdev.com/'
-  */
-
   if (process.env.NODE_ENV === 'test') {
     return '20000000000'
   }
@@ -61,7 +50,7 @@ export const calculateGasPrice = async (): Promise<string> => {
   }
 }
 
-export const calculateGasOf = async (data, from, to) => {
+export const calculateGasOf = async (data: string, from: string, to: string): Promise<number> => {
   const web3 = getWeb3()
   try {
     const gas = await web3.eth.estimateGas({ data, from, to })