calculating fee

Author: Vishwas1

src/components/deploy-onchain-kyc-popup/deploy-kyc.vue

@@ -121,7 +121,7 @@
 import ConnectWalletButton from "../element/authButtons/ConnectWalletButton.vue";
 import { mapGetters, mapMutations, mapActions, mapState } from "vuex";
 import { getCosmosBlockchainLabel, getCosmosChainConfig, getCosmosCoinLogo } from '@hypersign-protocol/hypersign-kyc-chains-metadata/cosmos/wallet/cosmos-wallet-utils'
-import { createNonSigningClient } from '../../utils/cosmos-client'
+import { createNonSigningClient, calculateFee } from '../../utils/cosmos-client'
 import { getSupportedChains } from '@hypersign-protocol/hypersign-kyc-chains-metadata/blockchain'
 import { smartContractExecuteRPC } from '@hypersign-protocol/hypersign-kyc-chains-metadata/cosmos/contract/execute'
 import { smartContractQueryRPC } from '@hypersign-protocol/hypersign-kyc-chains-metadata/cosmos/contract/query'
@@ -182,6 +182,7 @@ export default {
             this.reset();
 
             const { interchain } = this.allSupportedChains
+            console.log(interchain)
             const interchainOptions = []
             interchain.forEach(chain => {
                 const chainLabel = getCosmosBlockchainLabel(chain)
@@ -414,17 +415,19 @@ export default {
                     ...proof
                 });
 
-                console.log(smartContractMsg)
-
-
                 const chainConfig = this.chainConfig
                 const chainCoinDenom = chainConfig["feeCurrencies"][0]["coinMinimalDenom"]
+                const gasPriceAvg = chainConfig["gasPriceStep"]["average"]
+                const fee = calculateFee(500_000, (gasPriceAvg + chainCoinDenom).toString())
+
                 const result = await smartContractExecuteRPC(
                     this.getCosmosConnection.signingClient,
                     chainCoinDenom,
                     this.getBlockchainUser.walletAddress,
                     HYPERSIGN_KYC_FACTORY_CONTRACT_ADDRESS,
-                    smartContractMsg);
+                    smartContractMsg,
+                    fee
+                );
 
                 if (result) {
                     console.log(result)

src/components/deploy-onchain-kyc-popup/deploy-sbt.vue

@@ -70,7 +70,7 @@ import { smartContractExecuteRPC } from '@hypersign-protocol/hypersign-kyc-chain
 import { smartContractQueryRPC } from '@hypersign-protocol/hypersign-kyc-chains-metadata/cosmos/contract/query'
 import { constructInitSbtMsg, constructGetRegistredSBTContractAddressMsg } from '@hypersign-protocol/hypersign-kyc-chains-metadata/cosmos/contract/msg';
 import { getCosmosChainConfig } from '@hypersign-protocol/hypersign-kyc-chains-metadata/cosmos/wallet/cosmos-wallet-utils'
-import { createNonSigningClient } from '../../utils/cosmos-client'
+import { createNonSigningClient, calculateFee } from '../../utils/cosmos-client'
 import UtilsMixin from '../../mixins/utils'
 import ConnectWalletButton from "../element/authButtons/ConnectWalletButton.vue";
 
@@ -193,12 +193,15 @@ export default {
 
                 this.chainConfig = getCosmosChainConfig(this.selectedChainId)
                 const chainCoinDenom = this.chainConfig["feeCurrencies"][0]["coinMinimalDenom"]
+                const gasPriceAvg = this.chainConfig["gasPriceStep"]["average"]
+                const fee = calculateFee(500_000, (gasPriceAvg + chainCoinDenom).toString())
+
                 const result = await smartContractExecuteRPC(
                     this.getCosmosConnection.signingClient,
                     chainCoinDenom,
                     this.getBlockchainUser.walletAddress,
                     this.onChainIssuer.issuer.kyc_contract_address,
-                    smartContractMsg);
+                    smartContractMsg, fee);
 
                 if (result) {
                     console.log(result)

src/utils/cosmos-client.js

@@ -1,4 +1,8 @@
 import { SigningCosmWasmClient, CosmWasmClient } from '@cosmjs/cosmwasm-stargate'
+import { Uint53 } from "@cosmjs/math";
+import {
+    GasPrice, coins
+} from "@cosmjs/stargate";
 export async function createClient(rpcUrl, offlineSigner) {
     const client = SigningCosmWasmClient.connectWithSigner(
         rpcUrl,
@@ -12,3 +16,18 @@ export async function createNonSigningClient(rpcUrl) {
     return client
 }
 
+
+export function calculateFee(gasLimit, gasPrice) {
+    const processedGasPrice = typeof gasPrice === "string" ? GasPrice.fromString(gasPrice) : gasPrice;
+    const { denom, amount: gasPriceAmount } = processedGasPrice;
+    // Note: Amount can exceed the safe integer range (https://github.com/cosmos/cosmjs/issues/1134),
+    // which we handle by converting from Decimal to string without going through number.
+    const t = gasPriceAmount.multiply(new Uint53(gasLimit))
+    const amount = t.toString();
+    return {
+        amount: coins(amount, denom),
+        gas: gasLimit.toString(),
+    };
+}
+
+