58 lines
1.7 KiB
TypeScript
58 lines
1.7 KiB
TypeScript
// Copyright 2017-2023 @polkadot/app-alliance authors & contributors
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// SPDX-License-Identifier: Apache-2.0
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import type { AccountId32 } from '@polkadot/types/interfaces';
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import type { Member } from './types';
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import { useEffect, useState } from 'react';
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import { createNamedHook, useApi, useCall } from '@polkadot/react-hooks';
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// these are reversed (catering for old "Founder" role)
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const ROLES = <const> ['Retiring', 'Ally', 'Fellow', 'Founder'];
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function addMembers (prev: Member[], ...query: AccountId32[][]): Member[] {
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const all: Member[] = [];
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for (let i = 0; i < ROLES.length; i++) {
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const role = ROLES[i];
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const accountIds = query[i];
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for (let j = 0; j < accountIds.length; j++) {
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const accountId = accountIds[j].toString();
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const existing = prev.find((p) =>
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p.accountId === accountId &&
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p.role === role
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);
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all.push(existing || {
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accountId,
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role
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});
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}
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}
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return all.reverse();
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}
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function useMembersImpl (): Member[] | undefined {
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const { api } = useApi();
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const [state, setState] = useState<Member[] | undefined>();
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const role0 = useCall<AccountId32[]>(api.query.alliance.members, [ROLES[0]]);
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const role1 = useCall<AccountId32[]>(api.query.alliance.members, [ROLES[1]]);
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const role2 = useCall<AccountId32[]>(api.query.alliance.members, [ROLES[2]]);
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// for the Founder role, we don't expect and actual value
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const role3 = useCall<AccountId32[]>(api.query.alliance.members, [ROLES[3]]);
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useEffect((): void => {
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role0 && role1 && role2 &&
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setState((prev = []) =>
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addMembers(prev, role0, role1, role2, role3 || [])
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);
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}, [role0, role1, role2, role3]);
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return state;
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}
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export default createNamedHook('useMembers', useMembersImpl);
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