packages/api-derive/src/staking/stakerPoints.ts
// Copyright 2017-2024 @polkadot/api-derive authors & contributors
// SPDX-License-Identifier: Apache-2.0
import type { Observable } from 'rxjs';
import type { EraIndex } from '@polkadot/types/interfaces';
import type { DeriveApi, DeriveStakerPoints } from '../types.js';
import { map } from 'rxjs';
import { memo } from '../util/index.js';
import { erasHistoricApplyAccount } from './util.js';
export function _stakerPoints (instanceId: string, api: DeriveApi): (accountId: Uint8Array | string, eras: EraIndex[], withActive: boolean) => Observable<DeriveStakerPoints[]> {
return memo(instanceId, (accountId: Uint8Array | string, eras: EraIndex[], withActive: boolean): Observable<DeriveStakerPoints[]> => {
const stakerId = api.registry.createType('AccountId', accountId).toString();
return api.derive.staking._erasPoints(eras, withActive).pipe(
map((points): DeriveStakerPoints[] =>
points.map(({ era, eraPoints, validators }): DeriveStakerPoints => ({
era,
eraPoints,
points: validators[stakerId] || api.registry.createType('RewardPoint')
}))
)
);
});
}
export const stakerPoints = /*#__PURE__*/ erasHistoricApplyAccount('_stakerPoints');