50 lines
2.1 KiB
TypeScript
50 lines
2.1 KiB
TypeScript
// Copyright 2017-2021 @polkadot/api-derive authors & contributors
|
|
// SPDX-License-Identifier: Apache-2.0
|
|
|
|
import type { ApiInterfaceRx } from '@polkadot/api/types';
|
|
import type { Bytes, Option, u32 } from '@polkadot/types';
|
|
import type { AccountId, AccountIndex, Address, Balance } from '@polkadot/types/interfaces';
|
|
import type { ITuple } from '@polkadot/types/types';
|
|
import type { Observable } from '@polkadot/x-rxjs';
|
|
import type { DeriveAccountInfo, DeriveAccountRegistration } from '../types';
|
|
|
|
import { u8aToString } from '@polkadot/util';
|
|
import { combineLatest, of } from '@polkadot/x-rxjs';
|
|
import { map, switchMap } from '@polkadot/x-rxjs/operators';
|
|
|
|
import { memo } from '../util';
|
|
|
|
function retrieveNick (api: ApiInterfaceRx, accountId?: AccountId): Observable<string | undefined> {
|
|
return ((
|
|
accountId && api.query.nicks?.nameOf
|
|
? api.query.nicks.nameOf<Option<ITuple<[Bytes, Balance]>>>(accountId)
|
|
: of(undefined)
|
|
) as Observable<Option<ITuple<[Bytes, Balance]>> | undefined>).pipe(
|
|
map((nameOf): string | undefined =>
|
|
nameOf?.isSome
|
|
? u8aToString(nameOf.unwrap()[0]).substr(0, (api.consts.nicks.maxLength as u32).toNumber())
|
|
: undefined
|
|
)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* @name info
|
|
* @description Returns aux. info with regards to an account, current that includes the accountId, accountIndex and nickname
|
|
*/
|
|
export function info (instanceId: string, api: ApiInterfaceRx): (address?: AccountIndex | AccountId | Address | Uint8Array | string | null) => Observable<DeriveAccountInfo> {
|
|
return memo(instanceId, (address?: AccountIndex | AccountId | Address | Uint8Array | string | null): Observable<DeriveAccountInfo> =>
|
|
api.derive.accounts.idAndIndex(address).pipe(
|
|
switchMap(([accountId, accountIndex]): Observable<[Partial<DeriveAccountInfo>, DeriveAccountRegistration, string?]> =>
|
|
combineLatest([
|
|
of({ accountId, accountIndex }),
|
|
api.derive.accounts.identity(accountId),
|
|
retrieveNick(api, accountId)
|
|
])
|
|
),
|
|
map(([{ accountId, accountIndex }, identity, nickname]): DeriveAccountInfo => ({
|
|
accountId, accountIndex, identity, nickname
|
|
}))
|
|
));
|
|
}
|