lbry-desktop/ui/redux/selectors/comments.js

55 lines
1.7 KiB
JavaScript
Raw Normal View History

2020-06-23 19:38:18 +02:00
// @flow
import { createSelector } from 'reselect';
const selectState = state => state.comments || {};
export const selectCommentsById = createSelector(selectState, state => state.commentById || {});
export const selectIsFetchingComments = createSelector(selectState, state => state.isLoading);
export const selectCommentsByClaimId = createSelector(selectState, selectCommentsById, (state, byId) => {
const byClaimId = state.byId || {};
const comments = {};
// replace every comment_id in the list with the actual comment object
Object.keys(byClaimId).forEach(claimId => {
const commentIds = byClaimId[claimId];
comments[claimId] = Array(commentIds === null ? 0 : commentIds.length);
for (let i = 0; i < commentIds.length; i++) {
comments[claimId][i] = byId[commentIds[i]];
}
});
return comments;
});
// previously this used a mapping from claimId -> Array<Comments>
/* export const selectCommentsById = createSelector(
selectState,
state => state.byId || {}
); */
export const selectCommentsByUri = createSelector(selectState, state => {
const byUri = state.commentsByUri || {};
const comments = {};
Object.keys(byUri).forEach(uri => {
const claimId = byUri[uri];
if (claimId === null) {
comments[uri] = null;
} else {
comments[uri] = claimId;
}
});
return comments;
});
export const makeSelectCommentsForUri = (uri: string) =>
createSelector(selectCommentsByClaimId, selectCommentsByUri, (byClaimId, byUri) => {
const claimId = byUri[uri];
return byClaimId && byClaimId[claimId];
});
// todo: allow SDK to retrieve user comments through comment_list
// todo: implement selectors for selecting comments owned by user