packages/page-staking/src/Payouts/Validator.tsx
// Copyright 2017-2024 @polkadot/app-staking authors & contributors
// SPDX-License-Identifier: Apache-2.0
import type { BN } from '@polkadot/util';
import type { PayoutValidator } from './types.js';
import React, { useMemo } from 'react';
import { AddressMini, AddressSmall, Expander, Table } from '@polkadot/react-components';
import { BlockToTime } from '@polkadot/react-query';
import { useTranslation } from '../translate.js';
import PayButton from './PayButton.js';
import useEraBlocks from './useEraBlocks.js';
import { createErasString } from './util.js';
interface Props {
className?: string;
historyDepth?: BN;
isDisabled?: boolean;
payout: PayoutValidator;
}
interface State {
eraStr: React.ReactNode;
nominators: Record<string, BN>;
numNominators: number;
oldestEra?: BN;
}
function extractState (payout: PayoutValidator): State {
const eraStr = createErasString(payout.eras.map(({ era }) => era));
const nominators = payout.eras.reduce((nominators: Record<string, BN>, { stashes }): Record<string, BN> => {
Object.entries(stashes).forEach(([stashId, value]): void => {
if (nominators[stashId]) {
nominators[stashId] = nominators[stashId].add(value);
} else {
nominators[stashId] = value;
}
});
return nominators;
}, {});
return { eraStr, nominators, numNominators: Object.keys(nominators).length, oldestEra: payout.eras[0]?.era };
}
function Validator ({ className = '', historyDepth, isDisabled, payout }: Props): React.ReactElement<Props> {
const { t } = useTranslation();
const { eraStr, nominators, numNominators, oldestEra } = useMemo(
() => extractState(payout),
[payout]
);
const eraBlocks = useEraBlocks(historyDepth, oldestEra);
return (
<tr className={className}>
<td
className='address'
colSpan={2}
>
<AddressSmall value={payout.validatorId} />
</td>
<td className='start'>
<span className='payout-eras'>{eraStr}</span>
</td>
<Table.Column.Balance value={payout.available} />
<td className='number'>{eraBlocks && <BlockToTime value={eraBlocks} />}</td>
<td
className='expand'
colSpan={2}
>
<Expander summary={t('{{count}} own stashes', { replace: { count: numNominators } })}>
{Object.entries(nominators).map(([stashId, balance]) =>
<AddressMini
balance={balance}
key={stashId}
value={stashId}
withBalance
/>
)}
</Expander>
</td>
<td className='button'>
<PayButton
isDisabled={isDisabled}
payout={payout}
/>
</td>
</tr>
);
}
export default React.memo(Validator);