From eca77d684bf04721b5604cc67c5a5b898cbf30e1 Mon Sep 17 00:00:00 2001
From: Pierre Dommerc <dommerc.pierre@gmail.com>
Date: Mon, 6 Mar 2023 18:26:07 +0100
Subject: [PATCH] feat(wallet): send - add user fees settings and memo field
 (#3146)

* feat(wallet): send - add user fees settings, memo field

* fix(wallet): send, custom fees validation
---
 .../validator-client/src/nyxd/coin.rs         | 105 +++++++++++++++++-
 .../validator-client/src/nyxd/fee/mod.rs      |   8 +-
 nym-wallet/src-tauri/src/main.rs              |   1 +
 .../src/operations/simulate/cosmos.rs         |  10 ++
 nym-wallet/src-tauri/src/state.rs             |  11 ++
 .../src/components/Modals/ModalListItem.tsx   |   7 +-
 .../components/Send/SendDetails.stories.tsx   |   3 +
 .../src/components/Send/SendDetailsModal.tsx  |  16 +++
 .../src/components/Send/SendInputModal.tsx    |  82 +++++++++++++-
 nym-wallet/src/components/Send/SendModal.tsx  |  46 +++++++-
 nym-wallet/src/hooks/useGetFee.ts             |  16 ++-
 nym-wallet/src/requests/simulate.ts           |   3 +
 12 files changed, 293 insertions(+), 15 deletions(-)

diff --git a/common/client-libs/validator-client/src/nyxd/coin.rs b/common/client-libs/validator-client/src/nyxd/coin.rs
index 8f1afe2a30..3ac51997b8 100644
--- a/common/client-libs/validator-client/src/nyxd/coin.rs
+++ b/common/client-libs/validator-client/src/nyxd/coin.rs
@@ -1,10 +1,13 @@
 // Copyright 2022 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0
-use serde::{Deserialize, Serialize};
-use std::fmt;
 
+use crate::nyxd::{Gas, GasPrice};
 pub use cosmrs::Coin as CosmosCoin;
 pub use cosmwasm_std::Coin as CosmWasmCoin;
+use cosmwasm_std::{Fraction, Uint128};
+use serde::{Deserialize, Serialize};
+use std::fmt;
+use std::ops::Div;
 
 #[derive(Serialize, Deserialize, Clone, Copy, Default, Debug, PartialEq, Eq)]
 pub struct MismatchedDenoms;
@@ -19,6 +22,40 @@ pub struct Coin {
     pub denom: String,
 }
 
+impl Div<GasPrice> for Coin {
+    type Output = Gas;
+
+    fn div(self, rhs: GasPrice) -> Self::Output {
+        &self / rhs
+    }
+}
+
+impl<'a> Div<GasPrice> for &'a Coin {
+    type Output = Gas;
+
+    fn div(self, rhs: GasPrice) -> Self::Output {
+        if self.denom != rhs.denom {
+            panic!(
+                "attempted to use two different denoms for gas calculation ({} and {})",
+                self.denom, rhs.denom
+            );
+        }
+
+        // tsk, tsk. somebody tried to divide by zero here!
+        let Some(gas_price_inv) = rhs.amount.inv() else {
+            panic!("attempted to divide by zero!")
+        };
+
+        let implicit_gas_limit = gas_price_inv * Uint128::new(self.amount);
+        if implicit_gas_limit.u128() >= u64::MAX as u128 {
+            u64::MAX
+        } else {
+            implicit_gas_limit.u128() as u64
+        }
+        .into()
+    }
+}
+
 impl Coin {
     pub fn new<S: Into<String>>(amount: u128, denom: S) -> Self {
         Coin {
@@ -128,3 +165,67 @@ impl CoinConverter for CosmWasmCoin {
         }
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    #[should_panic]
+    fn division_by_zero_gas_price() {
+        let gas_price: GasPrice = "0unym".parse().unwrap();
+        let amount = Coin::new(123, "unym");
+        let _res = amount / gas_price;
+    }
+
+    #[test]
+    #[should_panic]
+    fn division_by_gas_price_of_different_denom() {
+        let gas_price: GasPrice = "0.025unyx".parse().unwrap();
+        let amount = Coin::new(123, "unym");
+        let _res = amount / gas_price;
+    }
+
+    #[test]
+    fn gas_price_division() {
+        let amount = Coin::new(3938, "unym");
+        let gas_price = "0.025unym".parse().unwrap();
+        let res = amount / gas_price;
+        assert_eq!(157520, res.value());
+
+        let amount = Coin::new(1234567890, "unym");
+        let gas_price = "0.025unym".parse().unwrap();
+        let res = amount / gas_price;
+        assert_eq!(49382715600, res.value());
+
+        let amount = Coin::new(1, "unym");
+        let gas_price = "0.025unym".parse().unwrap();
+        let res = amount / gas_price;
+        assert_eq!(40, res.value());
+
+        let amount = Coin::new(150_000_000, "unym");
+        let gas_price = "0.001234unym".parse().unwrap();
+        let res = amount / gas_price;
+        assert_eq!(121555915721, res.value());
+
+        let amount = Coin::new(150_000_000, "unym");
+        let gas_price = "1unym".parse().unwrap();
+        let res = amount / gas_price;
+        assert_eq!(150_000_000, res.value());
+
+        let amount = Coin::new(150_000_000, "unym");
+        let gas_price = "1234.56unym".parse().unwrap();
+        let res = amount / gas_price;
+        assert_eq!(121500, res.value());
+    }
+
+    #[test]
+    fn gas_price_division_identity() {
+        let amount = Coin::new(1234567890, "unym");
+        let gas_price: GasPrice = "0.025unym".parse().unwrap();
+        let res1 = (&amount) / gas_price.clone();
+        let res2 = &gas_price * res1;
+
+        assert_eq!(amount, Coin::from(res2));
+    }
+}
diff --git a/common/client-libs/validator-client/src/nyxd/fee/mod.rs b/common/client-libs/validator-client/src/nyxd/fee/mod.rs
index b887c08128..e1ee4b4d5c 100644
--- a/common/client-libs/validator-client/src/nyxd/fee/mod.rs
+++ b/common/client-libs/validator-client/src/nyxd/fee/mod.rs
@@ -1,8 +1,8 @@
 // Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0
 
-use crate::nyxd::Coin;
 use crate::nyxd::Gas;
+use crate::nyxd::{Coin, GasPrice};
 use cosmrs::{tx, AccountId};
 use serde::{Deserialize, Serialize};
 use std::fmt::{Display, Formatter};
@@ -64,6 +64,12 @@ impl Display for Fee {
 }
 
 impl Fee {
+    pub fn manual_with_gas_price(fee: Coin, gas_price: GasPrice) -> Self {
+        let gas_limit = &fee / gas_price;
+
+        Fee::Manual(tx::Fee::from_amount_and_gas(fee.into(), gas_limit))
+    }
+
     pub fn new_payer_granter_auto(
         gas_adjustment: Option<GasAdjustment>,
         payer: Option<AccountId>,
diff --git a/nym-wallet/src-tauri/src/main.rs b/nym-wallet/src-tauri/src/main.rs
index 7c918624f1..70f43c3c96 100644
--- a/nym-wallet/src-tauri/src/main.rs
+++ b/nym-wallet/src-tauri/src/main.rs
@@ -143,6 +143,7 @@ fn main() {
             vesting::queries::vesting_start_time,
             simulate::admin::simulate_update_contract_settings,
             simulate::cosmos::simulate_send,
+            simulate::cosmos::get_custom_fees,
             simulate::mixnet::simulate_bond_gateway,
             simulate::mixnet::simulate_unbond_gateway,
             simulate::mixnet::simulate_bond_mixnode,
diff --git a/nym-wallet/src-tauri/src/operations/simulate/cosmos.rs b/nym-wallet/src-tauri/src/operations/simulate/cosmos.rs
index 3679a1d863..a83aaf618a 100644
--- a/nym-wallet/src-tauri/src/operations/simulate/cosmos.rs
+++ b/nym-wallet/src-tauri/src/operations/simulate/cosmos.rs
@@ -33,3 +33,13 @@ pub async fn simulate_send(
     let result = client.nyxd.simulate(vec![msg]).await?;
     guard.create_detailed_fee(result)
 }
+
+#[tauri::command]
+pub async fn get_custom_fees(
+    fees_amount: DecCoin,
+    state: tauri::State<'_, WalletState>,
+) -> Result<FeeDetails, BackendError> {
+    let guard = state.read().await;
+    let fee = guard.attempt_convert_to_fixed_fee(fees_amount.clone())?;
+    Ok(FeeDetails::new(Some(fees_amount), fee))
+}
diff --git a/nym-wallet/src-tauri/src/state.rs b/nym-wallet/src-tauri/src/state.rs
index ef7eaa1cb4..6e9474d3a4 100644
--- a/nym-wallet/src-tauri/src/state.rs
+++ b/nym-wallet/src-tauri/src/state.rs
@@ -88,6 +88,17 @@ pub(crate) struct WalletAccountIds {
 }
 
 impl WalletStateInner {
+    pub fn attempt_convert_to_fixed_fee(&self, coin: DecCoin) -> Result<Fee, BackendError> {
+        // first we have to convert the coin to its base denomination
+        let base_coin = self.attempt_convert_to_base_coin(coin)?;
+
+        // then we get the gas price for the current network
+        let current_client = self.current_client()?;
+        let gas_price = current_client.nyxd.gas_price();
+
+        Ok(Fee::manual_with_gas_price(base_coin, gas_price.clone()))
+    }
+
     // note that `Coin` is ALWAYS the base coin
     pub fn attempt_convert_to_base_coin(&self, coin: DecCoin) -> Result<Coin, BackendError> {
         let registered_coins = self
diff --git a/nym-wallet/src/components/Modals/ModalListItem.tsx b/nym-wallet/src/components/Modals/ModalListItem.tsx
index 7e5194a21c..916603e011 100644
--- a/nym-wallet/src/components/Modals/ModalListItem.tsx
+++ b/nym-wallet/src/components/Modals/ModalListItem.tsx
@@ -1,5 +1,5 @@
 import React from 'react';
-import { Box, Stack, Typography, TypographyProps } from '@mui/material';
+import { Box, Stack, SxProps, Typography, TypographyProps } from '@mui/material';
 import { ModalDivider } from './ModalDivider';
 
 export const ModalListItem: FCWithChildren<{
@@ -9,14 +9,15 @@ export const ModalListItem: FCWithChildren<{
   fontWeight?: TypographyProps['fontWeight'];
   light?: boolean;
   value?: React.ReactNode;
-}> = ({ label, value, hidden, fontWeight, divider }) => (
+  sxValue?: SxProps;
+}> = ({ label, value, hidden, fontWeight, divider, sxValue }) => (
   <Box sx={{ display: hidden ? 'none' : 'block' }}>
     <Stack direction="row" justifyContent="space-between">
       <Typography fontSize="smaller" fontWeight={fontWeight} sx={{ color: 'text.primary', fontSize: 14 }}>
         {label}
       </Typography>
       {value && (
-        <Typography fontSize="smaller" fontWeight={fontWeight} sx={{ color: 'text.primary', fontSize: 14 }}>
+        <Typography fontSize="smaller" fontWeight={fontWeight} sx={{ color: 'text.primary', fontSize: 14, ...sxValue }}>
           {value}
         </Typography>
       )}
diff --git a/nym-wallet/src/components/Send/SendDetails.stories.tsx b/nym-wallet/src/components/Send/SendDetails.stories.tsx
index 88e231a2b6..ced7ee44ce 100644
--- a/nym-wallet/src/components/Send/SendDetails.stories.tsx
+++ b/nym-wallet/src/components/Send/SendDetails.stories.tsx
@@ -35,6 +35,9 @@ export const SendInput = () => {
       onClose={() => {}}
       onAddressChange={() => {}}
       onAmountChange={() => {}}
+      onUserFeesChange={() => {}}
+      onMemoChange={() => {}}
+      setShowMore={() => {}}
       {...storybookStylesModal(theme)}
     />
   );
diff --git a/nym-wallet/src/components/Send/SendDetailsModal.tsx b/nym-wallet/src/components/Send/SendDetailsModal.tsx
index f2b7d13491..366bf7ba9c 100644
--- a/nym-wallet/src/components/Send/SendDetailsModal.tsx
+++ b/nym-wallet/src/components/Send/SendDetailsModal.tsx
@@ -16,6 +16,7 @@ export const SendDetailsModal = ({
   onSend,
   sx,
   backdropProps,
+  memo,
 }: {
   fromAddress?: string;
   toAddress: string;
@@ -27,6 +28,7 @@ export const SendDetailsModal = ({
   onSend: (data: { val: DecCoin; to: string }) => void;
   sx?: SxProps;
   backdropProps?: object;
+  memo?: string;
 }) => (
   <SimpleModal
     header="Send details"
@@ -43,6 +45,20 @@ export const SendDetailsModal = ({
       <ModalListItem label="To" value={toAddress} divider />
       <ModalListItem label="Amount" value={`${amount?.amount} ${denom.toUpperCase()}`} divider />
       <ModalFee fee={fee} divider isLoading={false} />
+      {memo && (
+        <ModalListItem
+          label="Memo"
+          value={memo}
+          sxValue={{
+            textOverflow: 'ellipsis',
+            overflow: 'hidden',
+            whiteSpace: 'nowrap',
+            overflowWrap: 'anywhere',
+            maxWidth: '300px',
+          }}
+          divider
+        />
+      )}
       <ModalTotalAmount fee={fee} amount={amount?.amount} divider isLoading={false} />
     </Stack>
   </SimpleModal>
diff --git a/nym-wallet/src/components/Send/SendInputModal.tsx b/nym-wallet/src/components/Send/SendInputModal.tsx
index a54541d040..ca4d865f4c 100644
--- a/nym-wallet/src/components/Send/SendInputModal.tsx
+++ b/nym-wallet/src/components/Send/SendInputModal.tsx
@@ -1,11 +1,15 @@
 import React, { useEffect, useState } from 'react';
-import { Stack, TextField, Typography, SxProps } from '@mui/material';
+import { Stack, TextField, Typography, SxProps, FormControlLabel, Checkbox } from '@mui/material';
+import Big from 'big.js';
 import { CurrencyFormField } from '@nymproject/react/currency/CurrencyFormField';
-import { CurrencyDenom, DecCoin } from '@nymproject/types';
+import { CurrencyDenom, DecCoin, isValidRawCoin } from '@nymproject/types';
 import { validateAmount } from 'src/utils';
 import { SimpleModal } from '../Modals/SimpleModal';
 import { ModalListItem } from '../Modals/ModalListItem';
 
+const maxUserFees = '10.0';
+const minUserFees = '0.000001'; // aka 1 unym
+
 export const SendInputModal = ({
   fromAddress,
   toAddress,
@@ -19,6 +23,12 @@ export const SendInputModal = ({
   onAddressChange,
   sx,
   backdropProps,
+  userFees,
+  memo,
+  onUserFeesChange,
+  onMemoChange,
+  showMore,
+  setShowMore,
 }: {
   fromAddress?: string;
   toAddress: string;
@@ -26,24 +36,61 @@ export const SendInputModal = ({
   balance?: string;
   denom?: CurrencyDenom;
   error?: string;
+  showMore?: boolean;
+  setShowMore: (show: boolean) => void;
   onNext: () => void;
   onClose: () => void;
   onAmountChange: (value: DecCoin) => void;
   onAddressChange: (value: string) => void;
   sx?: SxProps;
   backdropProps?: object;
+  userFees?: DecCoin;
+  memo?: string;
+  onUserFeesChange: (value: DecCoin) => void;
+  onMemoChange: (value: string) => void;
 }) => {
   const [isValid, setIsValid] = useState(false);
+  const [memoIsValid, setMemoIsValid] = useState(true);
+  const [feeAmountIsValid, setFeeAmountIsValid] = useState(true);
 
   const validate = async (value: DecCoin) => {
     const isValidAmount = await validateAmount(value.amount, '0');
     setIsValid(isValidAmount);
   };
 
+  const validateUserFees = (fees: DecCoin) => {
+    if (!isValidRawCoin(fees.amount) || !Number(fees.amount)) {
+      setFeeAmountIsValid(false);
+      return;
+    }
+    const f = Big(fees.amount);
+    if (f.gt(maxUserFees) || f.lt(minUserFees)) {
+      setFeeAmountIsValid(false);
+      return;
+    }
+    setFeeAmountIsValid(true);
+  };
+
   useEffect(() => {
     if (amount) validate(amount);
   }, []);
 
+  useEffect(() => {
+    if (memo && !/^(\w|\s)+$/.test(memo)) {
+      setMemoIsValid(false);
+      return;
+    }
+    setMemoIsValid(true);
+  }, [memo]);
+
+  useEffect(() => {
+    if (userFees) {
+      validateUserFees(userFees);
+    } else {
+      setFeeAmountIsValid(true);
+    }
+  }, [userFees]);
+
   return (
     <SimpleModal
       header="Send"
@@ -51,7 +98,7 @@ export const SendInputModal = ({
       onClose={onClose}
       okLabel="Next"
       onOk={async () => onNext()}
-      okDisabled={!isValid}
+      okDisabled={!isValid || !memoIsValid || !feeAmountIsValid}
       sx={sx}
       backdropProps={backdropProps}
     >
@@ -84,6 +131,35 @@ export const SendInputModal = ({
           Est. fee for this transaction will be show on the next page
         </Typography>
       </Stack>
+      <FormControlLabel
+        control={<Checkbox onChange={() => setShowMore(!showMore)} checked={showMore} />}
+        label="More options"
+        sx={{ mt: 2 }}
+      />
+      {showMore && (
+        <Stack direction="column" gap={3} mt={2} mb={3}>
+          <CurrencyFormField
+            label="Fees"
+            onChanged={(v) => onUserFeesChange(v)}
+            initialValue={userFees?.amount}
+            fullWidth
+          />
+          <TextField
+            name="memo"
+            label="Memo"
+            onChange={(e) => onMemoChange(e.target.value)}
+            value={memo}
+            error={!memoIsValid}
+            helperText={
+              !memoIsValid
+                ? ' The text is invalid, only alphanumeric characters and white spaces are allowed'
+                : undefined
+            }
+            InputLabelProps={{ shrink: true }}
+            fullWidth
+          />
+        </Stack>
+      )}
     </SimpleModal>
   );
 };
diff --git a/nym-wallet/src/components/Send/SendModal.tsx b/nym-wallet/src/components/Send/SendModal.tsx
index 5758b2ceae..650fa4124c 100644
--- a/nym-wallet/src/components/Send/SendModal.tsx
+++ b/nym-wallet/src/components/Send/SendModal.tsx
@@ -1,4 +1,4 @@
-import React, { useContext, useState } from 'react';
+import React, { useContext, useEffect, useState } from 'react';
 import { DecCoin } from '@nymproject/types';
 import { AppContext, urls } from 'src/context';
 import { useGetFee } from 'src/hooks/useGetFee';
@@ -18,11 +18,28 @@ export const SendModal = ({ onClose, hasStorybookStyles }: { onClose: () => void
   const [modal, setModal] = useState<'send' | 'send details'>('send');
   const [error, setError] = useState<string>();
   const [sendError, setSendError] = useState(false);
+  const [gasError, setGasError] = useState<string>();
   const [isLoading, setIsLoading] = useState(false);
+  const [userFees, setUserFees] = useState<DecCoin>();
+  const [memo, setMemo] = useState<string>();
   const [txDetails, setTxDetails] = useState<TTransactionDetails>();
+  const [showMoreOptions, setShowMoreOptions] = useState(false);
 
   const { clientDetails, userBalance, network } = useContext(AppContext);
-  const { fee, getFee, feeError } = useGetFee();
+  const { fee, getFee, feeError, setFeeManually } = useGetFee();
+
+  useEffect(() => {
+    if (userFees?.amount.length === 0) {
+      setUserFees(undefined);
+    }
+  }, [userFees]);
+
+  useEffect(() => {
+    if (!showMoreOptions) {
+      setUserFees(undefined);
+      setMemo(undefined);
+    }
+  }, [showMoreOptions]);
 
   // removes any zero-width spaces and trailing white space
   const sanitizeAddress = (address: string) => address.replace(/[\u200B-\u200D\uFEFF]/g, '').trim();
@@ -32,7 +49,11 @@ export const SendModal = ({ onClose, hasStorybookStyles }: { onClose: () => void
       setIsLoading(true);
       setError(undefined);
       try {
-        await getFee(simulateSend, { address: toAddress, amount });
+        if (userFees) {
+          await setFeeManually(userFees);
+        } else {
+          await getFee(simulateSend, { address: toAddress, amount });
+        }
         setModal('send details');
       } catch (e) {
         setError(e as string);
@@ -48,14 +69,18 @@ export const SendModal = ({ onClose, hasStorybookStyles }: { onClose: () => void
     setIsLoading(true);
     setError(undefined);
     try {
-      const txResponse = await send({ amount: val, address: to, memo: '', fee: fee?.fee });
+      const txResponse = await send({ amount: val, address: to, memo: memo || '', fee: fee?.fee });
       setTxDetails({
         amount: `${amount?.amount} ${clientDetails?.display_mix_denom.toUpperCase()}`,
         txUrl: `${urls(network).blockExplorer}/transaction/${txResponse.tx_hash}`,
       });
     } catch (e) {
       Console.error(e as string);
-      setSendError(true);
+      if (/Raw log: out of gas/.test(e as string)) {
+        setGasError('Out of gas, please increase the amount of fees');
+      } else {
+        setSendError(true);
+      }
     } finally {
       setIsLoading(false);
     }
@@ -65,6 +90,10 @@ export const SendModal = ({ onClose, hasStorybookStyles }: { onClose: () => void
 
   if (sendError) return <SendErrorModal onClose={onClose} error={feeError} />;
 
+  if (gasError) {
+    return <SendErrorModal onClose={onClose} error={gasError} />;
+  }
+
   if (txDetails) return <SendSuccessModal txDetails={txDetails} onClose={onClose} />;
 
   if (modal === 'send details')
@@ -78,6 +107,7 @@ export const SendModal = ({ onClose, hasStorybookStyles }: { onClose: () => void
         onPrev={() => setModal('send')}
         onSend={handleSend}
         denom={clientDetails?.display_mix_denom || 'nym'}
+        memo={memo}
         {...hasStorybookStyles}
       />
     );
@@ -92,8 +122,14 @@ export const SendModal = ({ onClose, hasStorybookStyles }: { onClose: () => void
       onNext={handleOnNext}
       error={error}
       denom={clientDetails?.display_mix_denom}
+      userFees={userFees}
+      memo={memo}
+      showMore={showMoreOptions}
       onAmountChange={(value) => setAmount(value)}
       onAddressChange={(value) => setToAddress(sanitizeAddress(value))}
+      onUserFeesChange={(value) => setUserFees(value)}
+      onMemoChange={(value) => setMemo(value)}
+      setShowMore={setShowMoreOptions}
       {...hasStorybookStyles}
     />
   );
diff --git a/nym-wallet/src/hooks/useGetFee.ts b/nym-wallet/src/hooks/useGetFee.ts
index a38179c7f4..a563549182 100644
--- a/nym-wallet/src/hooks/useGetFee.ts
+++ b/nym-wallet/src/hooks/useGetFee.ts
@@ -1,6 +1,7 @@
-import { FeeDetails } from '@nymproject/types';
+import { DecCoin, FeeDetails } from '@nymproject/types';
 import { useState } from 'react';
 import { Console } from 'src/utils/console';
+import { getCustomFees } from '../requests';
 
 export function useGetFee() {
   const [fee, setFee] = useState<FeeDetails>();
@@ -19,6 +20,18 @@ export function useGetFee() {
     setIsFeeLoading(false);
   }
 
+  async function setFeeManually(amount: DecCoin) {
+    try {
+      setIsFeeLoading(true);
+      const fees = await getCustomFees({ feesAmount: amount });
+      setFee(fees);
+    } catch (e) {
+      Console.error(e);
+      setFeeError(e as string);
+    }
+    setIsFeeLoading(false);
+  }
+
   const resetFeeState = () => {
     setFee(undefined);
     setIsFeeLoading(false);
@@ -30,6 +43,7 @@ export function useGetFee() {
     isFeeLoading,
     feeError,
     getFee,
+    setFeeManually,
     resetFeeState,
   };
 }
diff --git a/nym-wallet/src/requests/simulate.ts b/nym-wallet/src/requests/simulate.ts
index bee1644298..d5aeacc2eb 100644
--- a/nym-wallet/src/requests/simulate.ts
+++ b/nym-wallet/src/requests/simulate.ts
@@ -59,6 +59,9 @@ export const simulateWithdrawVestedCoins = async (args: any) =>
 export const simulateSend = async ({ address, amount }: { address: string; amount: DecCoin }) =>
   invokeWrapper<FeeDetails>('simulate_send', { address, amount });
 
+export const getCustomFees = async ({ feesAmount }: { feesAmount: DecCoin }) =>
+  invokeWrapper<FeeDetails>('get_custom_fees', { feesAmount });
+
 export const simulateClaimOperatorReward = async () => invokeWrapper<FeeDetails>('simulate_claim_operator_reward');
 
 export const simulateVestingClaimOperatorReward = async () =>