67 lines
1.9 KiB
TypeScript
67 lines
1.9 KiB
TypeScript
// Copyright 2017-2022 @polkadot/react-components authors & contributors
|
|
// SPDX-License-Identifier: Apache-2.0
|
|
|
|
import type { TFunction } from 'i18next';
|
|
|
|
import React, { useRef } from 'react';
|
|
|
|
import { ApiPromise } from '@polkadot/api';
|
|
import { useApi, useBlockTime } from '@polkadot/react-hooks';
|
|
import { BN, BN_THOUSAND } from '@polkadot/util';
|
|
|
|
import Dropdown from './Dropdown';
|
|
import { useTranslation } from './translate';
|
|
|
|
export interface Props {
|
|
className?: string;
|
|
help?: string
|
|
label?: React.ReactNode;
|
|
onChange?: (value: number) => void;
|
|
value?: number;
|
|
}
|
|
|
|
const CONVICTIONS: [number, number, BN][] = [1, 2, 4, 8, 16, 32].map((lock, index) => [index + 1, lock, new BN(lock)]);
|
|
const SEC_DAY = 60 * 60 * 24;
|
|
|
|
function createOptions (api: ApiPromise, t: TFunction, blockTime: number): { text: string; value: number }[] {
|
|
return [
|
|
{ text: t<string>('0.1x voting balance, no lockup period'), value: 0 },
|
|
...CONVICTIONS.map(([value, lock, bnLock]): { text: string; value: number } => ({
|
|
text: t<string>('{{value}}x voting balance, locked for {{lock}}x enactment ({{period}} days)', {
|
|
replace: {
|
|
lock,
|
|
period: (
|
|
bnLock.mul(
|
|
api.consts.democracy.voteLockingPeriod ||
|
|
api.consts.democracy.enactmentPeriod
|
|
).muln(blockTime).div(BN_THOUSAND).toNumber() / SEC_DAY
|
|
).toFixed(2),
|
|
value
|
|
}
|
|
}),
|
|
value
|
|
}))
|
|
];
|
|
}
|
|
|
|
function Convictions ({ className = '', help, label, onChange, value }: Props): React.ReactElement<Props> | null {
|
|
const { api } = useApi();
|
|
const { t } = useTranslation();
|
|
const [blockTime] = useBlockTime();
|
|
|
|
const optionsRef = useRef(createOptions(api, t, blockTime));
|
|
|
|
return (
|
|
<Dropdown
|
|
className={className}
|
|
help={help}
|
|
label={label}
|
|
onChange={onChange}
|
|
options={optionsRef.current}
|
|
value={value}
|
|
/>
|
|
);
|
|
}
|
|
|
|
export default React.memo(Convictions);
|