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- // Copyright 2017-2020 @polkadot/app-contracts authors & contributors
- // This software may be modified and distributed under the terms
- // of the Apache-2.0 license. See the LICENSE file for details.
- /* eslint-disable camelcase */
- import { PrefabWasmModule } from '@polkadot/types/interfaces';
- import React, { useMemo } from 'react';
- import { Option } from '@polkadot/types';
- import { InfoForInput } from '@polkadot/react-components';
- import { useApi, useCall } from '@polkadot/react-hooks';
- import { isHex } from '@polkadot/util';
- import { useTranslation } from '../translate';
- interface Props {
- codeHash?: string | null;
- onChange: React.Dispatch<boolean>;
- }
- function ValidateCode ({ codeHash, onChange }: Props): React.ReactElement<Props> | null {
- const { api } = useApi();
- const { t } = useTranslation();
- const codeStorage = useCall<Option<PrefabWasmModule>>((api.query.contracts || api.query.contract).codeStorage, [codeHash]);
- const [isValidHex, isValid] = useMemo(
- (): [boolean, boolean] => {
- const isValidHex = !!codeHash && isHex(codeHash) && codeHash.length === 66;
- const isStored = !!codeStorage && codeStorage.isSome;
- const isValid = isValidHex && isStored;
- onChange(isValid);
- return [
- isValidHex,
- isValid
- ];
- },
- [codeHash, codeStorage, onChange]
- );
- if (isValid || !isValidHex) {
- return null;
- }
- return (
- <InfoForInput type='error'>
- {
- isValidHex
- ? t('Unable to find on-chain WASM code for the supplied codeHash')
- : t('The codeHash is not a valid hex hash')
- }
- </InfoForInput>
- );
- }
- export default React.memo(ValidateCode);
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