lbry-desktop/ui/redux/selectors/livestream.js
2021-11-17 18:16:00 +08:00

63 lines
2.2 KiB
JavaScript

// @flow
import { createSelector } from 'reselect';
import { createCachedSelector } from 're-reselect';
import { selectMyClaims, selectPendingClaims } from 'redux/selectors/claims';
type State = { livestream: any };
const selectState = (state: State) => state.livestream || {};
// select non-pending claims without sources for given channel
export const makeSelectLivestreamsForChannelId = (channelId: string) =>
createSelector(selectState, selectMyClaims, (livestreamState, myClaims = []) => {
return myClaims
.filter(
(claim) =>
claim.value_type === 'stream' &&
claim.value &&
!claim.value.source &&
claim.confirmations > 0 &&
claim.signing_channel &&
claim.signing_channel.claim_id === channelId
)
.sort((a, b) => b.timestamp - a.timestamp); // newest first
});
export const selectFetchingLivestreams = (state: State) => selectState(state).fetchingById;
export const selectViewersById = (state: State) => selectState(state).viewersById;
export const makeSelectIsFetchingLivestreams = (channelId: string) =>
createSelector(selectFetchingLivestreams, (fetchingLivestreams) => Boolean(fetchingLivestreams[channelId]));
export const selectViewersForId = (state: State, channelId: string) => {
const viewers = selectViewersById(state);
return viewers[channelId];
};
export const makeSelectPendingLivestreamsForChannelId = (channelId: string) =>
createSelector(selectPendingClaims, (pendingClaims) => {
return pendingClaims.filter(
(claim) =>
claim.value_type === 'stream' &&
claim.value &&
!claim.value.source &&
claim.signing_channel &&
claim.signing_channel.claim_id === channelId
);
});
export const selectActiveLivestreams = (state: State) => selectState(state).activeLivestreams;
export const selectIsActiveLivestreamForUri = createCachedSelector(
(state, uri) => uri,
selectActiveLivestreams,
(uri, activeLivestreams) => {
if (!uri || !activeLivestreams) {
return false;
}
const activeLivestreamValues = Object.values(activeLivestreams);
// $FlowFixMe - unable to resolve latestClaimUri
return activeLivestreamValues.some((v) => v.latestClaimUri === uri);
}
)((state, uri) => String(uri));