fix: toast for You do not have enough tokens to pay the transaction fee

src/i18n/en-US/index.ts

@@ -443,7 +443,7 @@ export default {
         'The amount of token to be staking must be greater than {amount} {symbol}',
       allFundsWillBeTransferred:
         'All funds will be transferred because the min. staking amount is {minStakingAmount} {symbol}',
-      invalidBalance: 'Insufficient transferrable balance to complete the transaction',
+      invalidBalance: 'You do not have enough tokens to pay the transaction fee',
       warningLeaveMinAmount:
         'Account must hold amount greater than {amount}{symbol} in transferrable after you stake.',
     },

src/i18n/fr/index.ts

@@ -443,7 +443,7 @@ export default {
         'Le montant de jeton à mettre en staking doit être supérieur à {amount} {symbol}',
       allFundsWillBeTransferred:
         'Tous les fonds seront transférés car le montant minimum est de {minStakingAmount} {symbol}',
-      invalidBalance: 'Solde transférable insuffisant pour finaliser la transaction',
+      invalidBalance: "Vous n'avez pas assez de jetons pour payer les frais de transaction",
       warningLeaveMinAmount:
         'Le compte doit contenir un montant supérieur à {amount}{symbol} transférable lorsque vous misez.',
     },

src/i18n/pt/index.ts

@@ -429,7 +429,7 @@ export default {
       notEnoughMinAmount: 'A quantidade de token em stake deve ser maior que {amount} {symbol}',
       allFundsWillBeTransferred:
         'Todos os fundos serão transferidos porque o valor min. do stake é {minStakingAmount} {symbol}',
-      invalidBalance: 'Saldo transferível insuficiente para concluir a transação',
+      invalidBalance: 'Você não tem tokens suficientes para pagar a taxa de transação',
       warningLeaveMinAmount:
         'A conta deve conter mais de {amount}{symbol} em valor transferível quando você faz stake.',
     },

src/modules/toast/index.ts

@@ -4,4 +4,7 @@ export enum AlertMsg {
   ERROR = 'Transaction failed',
   ERROR_DUPLICATED_TX = 'Transaction failed due to duplicate transactions on PolkaSafe; please approve or reject them before creating a new transaction',
   COMPLETED_HASH = 'Completed at transaction hash',
+  MINIMUM_BALANCE = 'You do not have enough tokens to pay the transaction fee',
 }
+
+export const REQUIRED_MINIMUM_BALANCE: number = 0.05;

src/v2/services/implementations/AssetsService.ts

@@ -3,13 +3,15 @@ import { getEvmProvider } from 'src/hooks/helper/wallet';
 import { IEventAggregator } from 'src/v2/messaging';
 import { IAssetsRepository } from 'src/v2/repositories/IAssetsRepository';
 import { IAssetsService, IWalletService } from 'src/v2/services';
+import { AlertMsg, REQUIRED_MINIMUM_BALANCE } from 'src/modules/toast/index';
 import {
   ParamAssetTransfer,
   ParamEvmTransfer,
   ParamEvmWithdraw,
 } from 'src/v2/services/IAssetsService';
 import { Symbols } from 'src/v2/symbols';
 import Web3 from 'web3';
+import { ethers } from 'ethers';
 
 @injectable()
 export class AssetsService implements IAssetsService {
@@ -26,33 +28,51 @@ export class AssetsService implements IAssetsService {
   }
 
   public async transferNativeAsset(param: ParamAssetTransfer): Promise<void> {
-    const transaction = await this.AssetsRepository.getNativeTransferCall(param);
-    const hash = await this.wallet.signAndSend({
-      extrinsic: transaction,
-      senderAddress: param.senderAddress,
-      successMessage: param.successMessage,
-    });
-    param.finalizedCallback(String(hash));
+    const useableBalance = await this.AssetsRepository.getNativeBalance(param.senderAddress);
+    const isBalanceEnough =
+      Number(ethers.utils.formatEther(useableBalance)) -
+        Number(ethers.utils.formatEther(param.amount)) >
+      REQUIRED_MINIMUM_BALANCE;
+
+    if (isBalanceEnough) {
+      const transaction = await this.AssetsRepository.getNativeTransferCall(param);
+      const hash = await this.wallet.signAndSend({
+        extrinsic: transaction,
+        senderAddress: param.senderAddress,
+        successMessage: param.successMessage,
+      });
+      param.finalizedCallback(String(hash));
+    } else {
+      throw new Error(AlertMsg.MINIMUM_BALANCE);
+    }
   }
 
   public async transferEvmAsset(param: ParamEvmTransfer): Promise<void> {
     const provider = getEvmProvider(this.currentWallet as any);
     const web3 = new Web3(provider as any);
-    const rawTx = await this.AssetsRepository.getEvmTransferData({
-      param,
-      web3,
-    });
 
-    const isErc20 = !!rawTx.data;
+    const balWei = await web3.eth.getBalance(param.senderAddress);
+    const useableBalance = Number(ethers.utils.formatEther(balWei));
+    const isBalanceEnough = useableBalance - Number(param.amount) > REQUIRED_MINIMUM_BALANCE;
+    if (isBalanceEnough) {
+      const rawTx = await this.AssetsRepository.getEvmTransferData({
+        param,
+        web3,
+      });
 
-    const transactionHash = await this.wallet.sendEvmTransaction({
-      from: param.senderAddress,
-      to: isErc20 ? param.contractAddress : param.toAddress,
-      value: isErc20 ? '0x0' : String(rawTx.value),
-      data: isErc20 ? rawTx.data : null,
-    });
+      const isErc20 = !!rawTx.data;
+
+      const transactionHash = await this.wallet.sendEvmTransaction({
+        from: param.senderAddress,
+        to: isErc20 ? param.contractAddress : param.toAddress,
+        value: isErc20 ? '0x0' : String(rawTx.value),
+        data: isErc20 ? rawTx.data : null,
+      });
 
-    param.finalizedCallback(transactionHash);
+      param.finalizedCallback(transactionHash);
+    } else {
+      throw Error(AlertMsg.MINIMUM_BALANCE);
+    }
   }
 
   public async evmWithdraw({ amount, senderAddress }: ParamEvmWithdraw): Promise<void> {

src/v2/services/implementations/PolkadotWalletService.ts

@@ -8,7 +8,7 @@ import { inject, injectable } from 'inversify';
 import { LOCAL_STORAGE } from 'src/config/localStorage';
 import { isMobileDevice } from 'src/hooks/helper/wallet';
 import { getSubscanExtrinsic, polkasafeUrl } from 'src/links';
-import { AlertMsg } from 'src/modules/toast/index';
+import { AlertMsg, REQUIRED_MINIMUM_BALANCE } from 'src/modules/toast/index';
 import { Guard, wait } from 'src/v2/common';
 import { BusyMessage, ExtrinsicStatusMessage, IEventAggregator } from 'src/v2/messaging';
 import { Account } from 'src/v2/models';
@@ -70,6 +70,16 @@ export class PolkadotWalletService extends WalletService implements IWalletServi
       return new Promise<string>(async (resolve, reject) => {
         isDetectExtensionsAction && this.detectExtensionsAction(true);
 
+        const useableBalance = await this.assetsRepository.getNativeBalance(senderAddress);
+        const isBalanceEnough =
+          Number(ethers.utils.formatEther(useableBalance)) > REQUIRED_MINIMUM_BALANCE;
+        if (!isBalanceEnough) {
+          this.eventAggregator.publish(
+            new ExtrinsicStatusMessage({ success: false, message: AlertMsg.MINIMUM_BALANCE })
+          );
+          throw new Error(AlertMsg.MINIMUM_BALANCE);
+        }
+
         await this.checkExtension();
         let tip = transactionTip?.toString();
         if (!tip) {