38 lines
1.2 KiB
JavaScript
38 lines
1.2 KiB
JavaScript
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import { createSelector } from 'reselect';
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import differenceInMilliseconds from 'date-fns/difference_in_milliseconds';
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import find from 'lodash/find';
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import orderBy from 'lodash/orderBy';
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import { DIRECTION } from '../actions/sorting';
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const getCollections = state => state.collections;
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const getField = state => state.sorting.field;
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const getDirection = state => state.sorting.direction;
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const getSortedCollections = createSelector(
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getCollections,
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getField,
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getDirection,
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(collections, field, direction) => {
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if (field === 'name') {
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if (direction === DIRECTION.DESC) {
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return orderBy(collections, 'name', 'desc');
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}
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return orderBy(collections, 'name', 'asc');
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}
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const sortedCollections = [...collections].sort((a, b) => {
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const result =
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direction === DIRECTION.ASC
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? differenceInMilliseconds(new Date(a[field]), new Date(b[field]))
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: differenceInMilliseconds(new Date(b[field]), new Date(a[field]));
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return result;
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});
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return sortedCollections;
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}
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);
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export function getCollection(state, id) {
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return find(getCollections(state), { id });
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}
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export default getSortedCollections;
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