lbry-desktop/ui/js/selectors/claims.js

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import { createSelector } from "reselect";
import lbryuri from "lbryuri";
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const _selectState = state => state.claims || {};
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export const selectClaimsById = createSelector(
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_selectState,
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(state) => state.byId || {}
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);
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export const selectClaimsByUri = createSelector(
_selectState,
selectClaimsById,
(state, byId) => {
const byUri = state.claimsByUri || {};
const claims = {};
Object.keys(byUri).forEach(uri => {
const claimId = byUri[uri];
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// NOTE returning a null claim allows us to differentiate between an
// undefined (never fetched claim) and one which just doesn't exist. Not
// the cleanest solution but couldn't think of anything better right now
if (claimId === null) {
claims[uri] = null;
} else {
const claim = byId[claimId];
claims[uri] = claim;
}
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})
return claims;
}
)
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export const selectAllClaimsByChannel = createSelector(
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_selectState,
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state => state.claimsByChannel || {}
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);
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const selectClaimForUri = (state, props) => {
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const uri = lbryuri.normalize(props.uri);
return selectClaimsByUri(state)[uri];
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};
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export const makeSelectClaimForUri = () => {
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return createSelector(selectClaimForUri, claim => claim);
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};
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export const selectClaimsInChannelForUri = (state, props) => {
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return selectAllClaimsByChannel(state)[props.uri];
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};
export const makeSelectClaimsInChannelForUri = () => {
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return createSelector(selectClaimsInChannelForUri, claims => claims);
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};
const selectMetadataForUri = (state, props) => {
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const claim = selectClaimForUri(state, props);
const metadata =
claim && claim.value && claim.value.stream && claim.value.stream.metadata;
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const value = metadata ? metadata : claim === undefined ? undefined : null;
return value;
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};
export const makeSelectMetadataForUri = () => {
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return createSelector(selectMetadataForUri, metadata => metadata);
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};
const selectSourceForUri = (state, props) => {
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const claim = selectClaimForUri(state, props);
const source =
claim && claim.value && claim.value.stream && claim.value.stream.source;
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return source ? source : claim === undefined ? undefined : null;
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};
export const makeSelectSourceForUri = () => {
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return createSelector(selectSourceForUri, source => source);
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};
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export const makeSelectContentTypeForUri = () => {
return createSelector(
selectSourceForUri,
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source => (source ? source.contentType : source)
);
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};
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export const selectClaimListMineIsPending = createSelector(
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_selectState,
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state => state.isClaimListMinePending
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);
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export const selectMyClaims = createSelector(
_selectState,
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state => state.myClaims || new Set()
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);
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export const selectMyClaimsOutpoints = createSelector(
selectMyClaims,
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selectClaimsById,
(claimIds, byId) => {
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const outpoints = [];
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claimIds.forEach(claimId => {
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const claim = byId[claimId];
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if (claim) outpoints.push(`${claim.txid}:${claim.nout}`);
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})
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return outpoints;
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}
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);