Fix council derives for seatholders (#3163)

* Fix council derives for setholders

* Fix vote retreival

packages/api-derive/src/elections/info.ts

@@ -3,7 +3,7 @@
 
 import type { ApiInterfaceRx } from '@polkadot/api/types';
 import type { u32, Vec } from '@polkadot/types';
-import type { AccountId, Balance, BlockNumber } from '@polkadot/types/interfaces';
+import type { AccountId, Balance, BlockNumber, SeatHolder } from '@polkadot/types/interfaces';
 import type { ITuple } from '@polkadot/types/types';
 import type { Observable } from '@polkadot/x-rxjs';
 import type { DeriveElectionsInfo } from './types';
@@ -12,7 +12,17 @@ import { map } from '@polkadot/x-rxjs/operators';
 
 import { memo } from '../util';
 
-function sortAccounts ([, balanceA]: ITuple<[AccountId, Balance]>, [, balanceB]: ITuple<[AccountId, Balance]>): number {
+function isSeatHolder (value: ITuple<[AccountId, Balance]> | SeatHolder): value is SeatHolder {
+  return !Array.isArray(value);
+}
+
+function getAccountTuple (value: ITuple<[AccountId, Balance]> | SeatHolder): [AccountId, Balance] {
+  return isSeatHolder(value)
+    ? [value.who, value.stake]
+    : value;
+}
+
+function sortAccounts ([, balanceA]: [AccountId, Balance], [, balanceB]: [AccountId, Balance]): number {
   return balanceB.cmp(balanceA);
 }
 
@@ -32,9 +42,9 @@ function queryElections (api: ApiInterfaceRx): Observable<DeriveElectionsInfo> {
       desiredRunnersUp: api.consts[section].desiredRunnersUp as u32,
       desiredSeats: api.consts[section].desiredMembers as u32,
       members: members.length
-        ? members.sort(sortAccounts)
+        ? members.map(getAccountTuple).sort(sortAccounts)
         : councilMembers.map((accountId): [AccountId, Balance] => [accountId, api.registry.createType('Balance')]),
-      runnersUp: runnersUp.sort(sortAccounts),
+      runnersUp: runnersUp.map(getAccountTuple).sort(sortAccounts),
       termDuration: api.consts[section].termDuration as BlockNumber,
       votingBond: api.consts[section].votingBond as Balance
     }))