54 lines
1.5 KiB
TypeScript
54 lines
1.5 KiB
TypeScript
// Copyright 2017-2021 @polkadot/react-hooks authors & contributors
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// SPDX-License-Identifier: Apache-2.0
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import type BN from 'bn.js';
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import type { LinkOption } from '@polkadot/apps-config/settings/types';
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import { useMemo } from 'react';
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import { createWsEndpoints } from '@polkadot/apps-config';
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import { bnToBn } from '@polkadot/util';
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import { useApi } from './useApi';
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function extractRelayEndpoints (genesisHash: string): LinkOption[] {
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return createWsEndpoints((key: string, value: string | undefined) => value || key).filter(({ genesisHashRelay }) =>
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genesisHash === genesisHashRelay
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);
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}
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function extractParaEndpoints (allEndpoints: LinkOption[], paraId: BN | number): LinkOption[] {
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const numId = bnToBn(paraId).toNumber();
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return allEndpoints.filter(({ paraId }) => paraId === numId);
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}
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function useRelayEndpoints (): LinkOption[] {
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const { api } = useApi();
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return useMemo(
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() => extractRelayEndpoints(api.genesisHash.toHex()),
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[api]
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);
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}
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export function useParaEndpoints (paraId: BN | number): LinkOption[] {
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const endpoints = useRelayEndpoints();
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return useMemo(
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() => extractParaEndpoints(endpoints, paraId),
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[endpoints, paraId]
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);
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}
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export function useIsParasLinked (ids?: (BN | number)[] | null): Record<string, boolean> {
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const endpoints = useRelayEndpoints();
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return useMemo(
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() => ids
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? ids.reduce((all: Record<string, boolean>, id) => ({ ...all, [id.toString()]: extractParaEndpoints(endpoints, id).length !== 0 }), {})
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: {},
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[endpoints, ids]
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);
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}
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