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Randomize same-parent inclusion via nomination (#3295)

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Jaco Greeff 2020-07-30 17:16:49 +02:00 committed by GitHub
parent c99c5db554
commit a370da33d5
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1 changed files with 31 additions and 2 deletions
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33
packages/page-staking/src/Actions/partials/Nominate.tsx
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@ -10,6 +10,7 @@ import styled from 'styled-components';
import { AddressMini, InputAddress, InputAddressMulti, Modal, Static, Toggle } from '@polkadot/react-components';
import { getParentAccount } from '@polkadot/react-components/AccountName';
import { useApi, useFavorites } from '@polkadot/react-hooks';
import { randomAsNumber } from '@polkadot/util-crypto';
import { MAX_NOMINATIONS, MAX_PAYOUTS, STORE_FAVS_BASE } from '../../constants';
import { useTranslation } from '../../translate';
@ -33,15 +34,43 @@ interface Selected {
function autoPick (targets: SortedTargets): string[] {
const parents: string[] = [];
const positions: number[] = [];
return (targets.validators || []).reduce((result: string[], { isElected, isFavorite, key, numNominators, rewardPayout }): string[] => {
if (result.length < MAX_NOMINATIONS) {
if (numNominators && (numNominators < MAX_PAYOUTS) && (isElected || isFavorite) && !rewardPayout.isZero()) {
const parent = getParentAccount(key);
let shouldInclude = isFavorite;
if (isFavorite || !parent || (!parents.includes(parent) && !parents.includes(key))) {
if (!shouldInclude) {
const noParent = !parents.includes(key) && (!parent || !parents.includes(parent));
if (noParent) {
shouldInclude = true;
} else {
const parentIndex = parent
? parents.indexOf(parent)
: -1;
const keyIndex = parents.indexOf(key);
const index = keyIndex !== -1
? keyIndex
: parentIndex;
// 66.6% chance to be replaced by a later one
if (index !== -1 && ((randomAsNumber() % 300) > 100)) {
result[positions[index]] = key;
}
}
}
if (shouldInclude) {
positions[parents.length] = result.length;
parents.push(key);
parent && parents.push(parent);
if (parent) {
positions[parents.length] = result.length;
parents.push(parent);
}
result.push(key);
}