packages/api-derive/src/accounts/accountId.ts
// Copyright 2017-2024 @polkadot/api-derive authors & contributors
// SPDX-License-Identifier: Apache-2.0
import type { Observable } from 'rxjs';
import type { AccountId, AccountIndex, Address } from '@polkadot/types/interfaces';
import type { DeriveApi } from '../types.js';
import { map, of } from 'rxjs';
import { assertReturn, isU8a } from '@polkadot/util';
import { decodeAddress } from '@polkadot/util-crypto';
import { memo } from '../util/index.js';
/**
* @name accountId
* @param {(Address | AccountId | AccountIndex | string | null)} address - An accounts address in various formats.
* @description An [[AccountId]]
*/
export function accountId (instanceId: string, api: DeriveApi): (address?: Address | AccountId | AccountIndex | string | null) => Observable<AccountId> {
return memo(instanceId, (address?: Address | AccountId | AccountIndex | string | null): Observable<AccountId> => {
const decoded = isU8a(address)
? address
: decodeAddress((address || '').toString());
if (decoded.length > 8) {
return of(api.registry.createType('AccountId', decoded));
}
const accountIndex = api.registry.createType('AccountIndex', decoded);
return api.derive.accounts.indexToId(accountIndex.toString()).pipe(
map((a) => assertReturn(a, 'Unable to retrieve accountId'))
);
});
}