42 lines
1.2 KiB
TypeScript
42 lines
1.2 KiB
TypeScript
// Copyright 2022 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import { createSelector } from 'reselect';
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import type { ReadonlyDeep } from 'type-fest';
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import type { MediaItemType } from '../../types/MediaItem';
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import type { StateType } from '../reducer';
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import type { LightboxStateType } from '../ducks/lightbox';
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export const getLightboxState = (state: StateType): LightboxStateType =>
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state.lightbox;
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export const shouldShowLightbox = createSelector(
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getLightboxState,
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({ isShowingLightbox }): boolean => isShowingLightbox
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);
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export const getIsViewOnce = createSelector(
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getLightboxState,
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(state): boolean => (state.isShowingLightbox ? state.isViewOnce : false)
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);
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export const getSelectedIndex = createSelector(
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getLightboxState,
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(state): number => {
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if (!state.isShowingLightbox) {
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return 0;
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}
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const index = state.media.findIndex(
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item => item.attachment.path === state.selectedAttachmentPath
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);
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return index > 0 ? index : 0;
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}
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);
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export const getMedia = createSelector(
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getLightboxState,
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(state): ReadonlyArray<ReadonlyDeep<MediaItemType>> =>
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state.isShowingLightbox ? state.media : []
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);
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