50 lines
1.3 KiB
TypeScript
50 lines
1.3 KiB
TypeScript
// Copyright 2017-2020 @polkadot/react-signer authors & contributors
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// This software may be modified and distributed under the terms
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// of the Apache-2.0 license. See the LICENSE file for details.
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import { DeriveContractFees } from '@polkadot/api-derive/types';
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import { ExtraFees as State } from './types';
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import BN from 'bn.js';
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import React, { useEffect, useState } from 'react';
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import { Compact, UInt } from '@polkadot/types';
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interface Props {
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endowment: BN | Compact<UInt>;
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fees: DeriveContractFees;
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onChange: (fees: State) => void;
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}
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function ContractCall ({ endowment, fees, onChange }: Props): React.ReactElement<Props> | null {
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const [, setState] = useState<State>({
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extraAmount: new BN(0),
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extraFees: new BN(0),
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extraWarn: false
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});
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useEffect((): void => {
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const extraFees = new BN(fees.callBaseFee);
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const extraAmount = endowment instanceof Compact
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? endowment.toBn()
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: new BN(endowment || 0);
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const update = {
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extraAmount,
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extraFees,
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extraWarn: false
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};
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setState((state): State => {
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if (!update.extraAmount.eq(state.extraAmount) || !update.extraFees.eq(state.extraFees)) {
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onChange(update);
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}
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return update;
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});
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}, [endowment, fees, onChange]);
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return null;
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}
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export default React.memo(ContractCall);
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