lbry-desktop/extras/lbryinc/redux/selectors/ban.js
infinite-persistence 787ebd9588
Blacklist: use existing map instead of looping (#400)
We already have a pre-calculated map, but not used except for comments.

At the expense of pre-calculating it, the subsequent queries are instantaneous compared to the loop.

We are still not perfect in term of reducing re-renders, so this helps a lot.
2021-12-01 10:24:27 -05:00

68 lines
2.3 KiB
JavaScript

// @flow
// TODO: This should be in 'redux/selectors/claim.js'. Temporarily putting it
// here to get past importing issues with 'lbryinc', which the real fix might
// involve moving it from 'extras' to 'ui' (big change).
import { createCachedSelector } from 're-reselect';
import { selectClaimForUri } from 'redux/selectors/claims';
import { selectMutedChannels } from 'redux/selectors/blocked';
import { selectModerationBlockList } from 'redux/selectors/comments';
import { selectBlacklistedOutpointMap, selectFilteredOutpointMap } from 'lbryinc';
import { getChannelFromClaim } from 'util/claim';
import { isURIEqual } from 'util/lbryURI';
export const selectBanStateForUri = createCachedSelector(
selectClaimForUri,
selectBlacklistedOutpointMap,
selectFilteredOutpointMap,
selectMutedChannels,
selectModerationBlockList,
(claim, blackListedOutpointMap, filteredOutpointMap, mutedChannelUris, personalBlocklist) => {
const banState = {};
if (!claim) {
return banState;
}
const channelClaim = getChannelFromClaim(claim);
// This will be replaced once blocking is done at the wallet server level.
if (blackListedOutpointMap) {
if (
(channelClaim && blackListedOutpointMap[`${channelClaim.txid}:${channelClaim.nout}`]) ||
blackListedOutpointMap[`${claim.txid}:${claim.nout}`]
) {
banState['blacklisted'] = true;
}
}
// We're checking to see if the stream outpoint or signing channel outpoint
// is in the filter list.
if (filteredOutpointMap) {
if (
(channelClaim && filteredOutpointMap[`${channelClaim.txid}:${channelClaim.nout}`]) ||
filteredOutpointMap[`${claim.txid}:${claim.nout}`]
) {
banState['filtered'] = true;
}
}
// block stream claims
// block channel claims if we can't control for them in claim search
if (mutedChannelUris.length && channelClaim) {
if (mutedChannelUris.some((blockedUri) => isURIEqual(blockedUri, channelClaim.permanent_url))) {
banState['muted'] = true;
}
}
// Commentron blocklist
if (personalBlocklist.length && channelClaim) {
if (personalBlocklist.some((blockedUri) => isURIEqual(blockedUri, channelClaim.permanent_url))) {
banState['blocked'] = true;
}
}
return banState;
}
)((state, uri) => String(uri));