31 lines
1009 B
TypeScript
31 lines
1009 B
TypeScript
// Copyright 2017-2021 @polkadot/api-derive authors & contributors
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// SPDX-License-Identifier: Apache-2.0
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import type { ApiInterfaceRx } from '@polkadot/api/types';
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import type { Observable } from '@polkadot/x-rxjs';
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import type { DeriveReferendumExt } from '../types';
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import { combineLatest, of } from '@polkadot/x-rxjs';
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import { map, switchMap } from '@polkadot/x-rxjs/operators';
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import { memo } from '../util';
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export function referendums (instanceId: string, api: ApiInterfaceRx): () => Observable<DeriveReferendumExt[]> {
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return memo(instanceId, (): Observable<DeriveReferendumExt[]> =>
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api.derive.democracy.referendumsActive().pipe(
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switchMap((referendums) =>
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combineLatest([
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of(referendums),
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api.derive.democracy._referendumsVotes(referendums)
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])
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),
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map(([referendums, votes]) =>
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referendums.map((referendum, index): DeriveReferendumExt => ({
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...referendum,
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...votes[index]
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}))
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)
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)
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);
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}
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