24 lines
795 B
TypeScript
24 lines
795 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 { DeriveReferendum } from '../types';
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import { of } from '@polkadot/x-rxjs';
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import { switchMap } from '@polkadot/x-rxjs/operators';
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import { memo } from '../util';
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export function referendumsActive (instanceId: string, api: ApiInterfaceRx): () => Observable<DeriveReferendum[]> {
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return memo(instanceId, (): Observable<DeriveReferendum[]> =>
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api.derive.democracy.referendumIds().pipe(
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switchMap((ids): Observable<DeriveReferendum[]> =>
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ids.length
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? api.derive.democracy.referendumsInfo(ids)
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: of([])
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)
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)
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);
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}
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