27 lines
1.1 KiB
TypeScript
27 lines
1.1 KiB
TypeScript
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import React from 'react';
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import type { TurnProjectionResult } from '../lib/turns/types';
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export interface TurnLookupResult {
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turnById: TurnProjectionResult['indexes']['turnById'];
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messageToTurnId: TurnProjectionResult['indexes']['messageToTurnId'];
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messageMetaById: TurnProjectionResult['indexes']['messageMetaById'];
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getTurnByMessageId: (messageId: string) => TurnProjectionResult['turns'][number] | undefined;
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}
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export const useTurnLookup = (projection: TurnProjectionResult): TurnLookupResult => {
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const getTurnByMessageId = React.useCallback((messageId: string) => {
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const turnId = projection.indexes.messageToTurnId.get(messageId);
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if (!turnId) {
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return undefined;
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}
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return projection.indexes.turnById.get(turnId);
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}, [projection.indexes.messageToTurnId, projection.indexes.turnById]);
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return {
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turnById: projection.indexes.turnById,
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messageToTurnId: projection.indexes.messageToTurnId,
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messageMetaById: projection.indexes.messageMetaById,
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getTurnByMessageId,
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};
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};
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