Bring in flashbots functionality for networks that support it (#5800)

* progress on bringing back flashbots

* cleanup

src/__swaps__/screens/Swap/providers/swap-provider.tsx

@@ -32,14 +32,15 @@ import { Navigation } from '@/navigation';
 import { WrappedAlert as Alert } from '@/helpers/alert';
 import Routes from '@/navigation/routesNames';
 import { ethereumUtils } from '@/utils';
-import { getCachedProviderForNetwork, isHardHat } from '@/handlers/web3';
+import { getCachedProviderForNetwork, getFlashbotsProvider, isHardHat } from '@/handlers/web3';
 import { loadWallet } from '@/model/wallet';
 import { walletExecuteRap } from '@/raps/execute';
 import { queryClient } from '@/react-query';
 import { userAssetsQueryKey } from '@/resources/assets/UserAssetsQuery';
 import { useAccountSettings } from '@/hooks';
 import { getGasSettingsBySpeed, getSelectedGas } from '../hooks/useSelectedGas';
 import { LegacyTransactionGasParamAmounts, TransactionGasParamAmounts } from '@/entities';
+import { getNetworkObj } from '@/networks';
 import { userAssetsStore } from '@/state/assets/userAssets';
 
 const swapping = i18n.t(i18n.l.swap.actions.swapping);
@@ -157,21 +158,23 @@ export const SwapProvider = ({ children }: SwapProviderProps) => {
     };
 
     const network = ethereumUtils.getNetworkFromChainId(parameters.chainId);
-    const provider = getCachedProviderForNetwork(network);
+    const provider =
+      parameters.flashbots && getNetworkObj(network).features.flashbots
+        ? await getFlashbotsProvider()
+        : getCachedProviderForNetwork(network);
     const providerUrl = provider?.connection?.url;
     const connectedToHardhat = isHardHat(providerUrl);
 
-    const wallet = await loadWallet(parameters.quote.from, false, provider);
-    if (!wallet) {
+    const selectedGas = getSelectedGas(parameters.chainId);
+    if (!selectedGas) {
       runOnUI(resetSwappingStatus)();
-      Alert.alert(i18n.t(i18n.l.swap.unable_to_load_wallet));
+      Alert.alert(i18n.t(i18n.l.gas.unable_to_determine_selected_gas));
       return;
     }
 
-    const selectedGas = getSelectedGas(parameters.chainId);
-    if (!selectedGas) {
+    const wallet = await loadWallet(parameters.quote.from, false, provider);
+    if (!wallet) {
       runOnUI(resetSwappingStatus)();
-      // TODO: Show alert or something but this should never happen technically
       Alert.alert(i18n.t(i18n.l.swap.unable_to_load_wallet));
       return;
     }
@@ -502,7 +505,6 @@ export const SwapProvider = ({ children }: SwapProviderProps) => {
     }
   });
 
-  // TODO: i18n these
   const confirmButtonLabel = useDerivedValue(() => {
     if (isSwapping.value) {
       return swapping;

src/languages/en_US.json

@@ -1050,6 +1050,7 @@
         "urgent": "Urgent",
         "custom": "Custom"
       },
+      "unable_to_determine_selected_gas": "Unable to determine selected gas",
       "network_fee": "Est. network fee",
       "current_base_fee": "Current base fee",
       "max_base_fee": "Max base fee",