62 lines
2.1 KiB
TypeScript
62 lines
2.1 KiB
TypeScript
// Copyright 2017-2020 @polkadot/react-hooks 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 { DeriveStakerReward } from '@polkadot/api-derive/types';
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import { EraIndex } from '@polkadot/types/interfaces';
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import { useEffect, useState } from 'react';
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import useApi from './useApi';
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import useCall from './useCall';
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import useIsMountedRef from './useIsMountedRef';
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import { useOwnStashIds } from './useOwnStashes';
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interface OwnRewards {
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allRewards?: Record<string, DeriveStakerReward[]>;
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isLoadingRewards: boolean;
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rewardCount: number;
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}
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function getRewards ([[stashIds], available]: [[string[]], DeriveStakerReward[][]]): OwnRewards {
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const allRewards: Record<string, DeriveStakerReward[]> = {};
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stashIds.forEach((stashId, index): void => {
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allRewards[stashId] = available[index].filter(({ eraReward }) => !eraReward.isZero());
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});
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return {
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allRewards,
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isLoadingRewards: false,
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rewardCount: Object.values(allRewards).filter((rewards) => rewards.length !== 0).length
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};
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}
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export default function useOwnEraRewards (maxEras = 1000): OwnRewards {
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const { api } = useApi();
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const mountedRef = useIsMountedRef();
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const stashIds = useOwnStashIds();
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const allEras = useCall<EraIndex[]>(api.derive.staking?.erasHistoric, []);
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const [filteredEras, setFilteredEras] = useState<EraIndex[]>([]);
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const available = useCall<[[string[]], DeriveStakerReward[][]]>((filteredEras?.length > 0) && stashIds && api.derive.staking?.stakerRewardsMultiEras, [stashIds, filteredEras], { withParams: true });
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const [state, setState] = useState<OwnRewards>({ isLoadingRewards: true, rewardCount: 0 });
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useEffect((): void => {
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setState({ isLoadingRewards: true, rewardCount: 0 });
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}, [maxEras]);
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useEffect((): void => {
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mountedRef.current && available && setState(
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getRewards(available)
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);
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}, [available, mountedRef]);
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useEffect((): void => {
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allEras && setFilteredEras(
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allEras.reverse().filter((_, index) => index < maxEras).reverse()
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);
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}, [allEras, maxEras]);
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return state;
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}
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