packages/apps-routing/src/staking.ts
// Copyright 2017-2024 @polkadot/apps-routing authors & contributors
// SPDX-License-Identifier: Apache-2.0
import type { ApiPromise } from '@polkadot/api';
import type { u32, Vec } from '@polkadot/types';
import type { SpStakingPagedExposureMetadata } from '@polkadot/types/lookup';
import type { Route, TFunction } from './types.js';
import Component from '@polkadot/app-staking';
import { ZERO_ACCOUNT } from '@polkadot/react-hooks/useWeight';
import { unwrapStorageType } from '@polkadot/types/util';
import { assert, BN_ONE } from '@polkadot/util';
function needsApiCheck (api: ApiPromise): boolean {
try {
// we need a known Exposure type
const { nominatorCount, own, pageCount, total } = api.registry.createType<SpStakingPagedExposureMetadata>(
unwrapStorageType(api.registry, api.query.staking.erasStakersOverview.creator.meta.type),
{ nominatorCount: BN_ONE, own: BN_ONE, pageCount: BN_ONE, total: BN_ONE }
);
assert(total && own && nominatorCount && pageCount && total.eq(BN_ONE) && own.eq(BN_ONE), 'Needs a known Exposure type');
} catch {
console.warn('Unable to create known-shape Exposure type, disabling staking route');
return false;
}
try {
// we need to be able to bond
if (api.tx.staking.bond.meta.args.length === 3) {
// previous generation, controller account is required
// @ts-expect-error Previous generation
api.tx.staking.bond(ZERO_ACCOUNT, BN_ONE, { Account: ZERO_ACCOUNT });
} else if (api.tx.staking.bond.meta.args.length === 2) {
// current, no controller account
api.tx.staking.bond(BN_ONE, { Account: ZERO_ACCOUNT });
} else {
// unknown
return false;
}
} catch {
console.warn('Unable to create staking bond transaction, disabling staking route');
return false;
}
// For compatibility - `api.query.staking.ledger` returns `legacyClaimedRewards` instead of `claimedRewards` as of v1.4
try {
const v = api.registry.createType<Vec<u32>>(
unwrapStorageType(api.registry, api.query.staking.claimedRewards.creator.meta.type),
[0]
);
assert(v.eq([0]), 'Needs a legacyClaimedRewards array');
} catch {
console.warn('No known legacyClaimedRewards or claimedRewards inside staking ledger, disabling staking route');
return false;
}
return true;
}
export default function create (t: TFunction): Route {
return {
Component,
display: {
needsApi: [
'query.staking.erasStakersOverview',
'tx.staking.bond'
],
needsApiCheck
},
group: 'network',
icon: 'certificate',
name: 'staking',
text: t('nav.staking', 'Staking', { ns: 'apps-routing' })
};
}