[worker] implement balance_unshield trusted call

packages/worker-api/src/worker.spec.ts

@@ -83,6 +83,16 @@ describe('worker', () => {
       });
     });
 
+    describe('balance unshield should work', () => {
+      it('should return value', async () => {
+        const shard = worker.createType('ShardIdentifier', bs58.decode(network.mrenclave));
+        const params = worker.createType('BalanceUnshieldArgs', [alice.address, bob.address, 1100000000000, shard])
+        const result = await worker.balanceUnshieldFunds(alice, shard, network.mrenclave, params);
+        console.log('balance unshield result', result.toHuman());
+        expect(result).toBeDefined();
+      });
+    });
+
     // Tests specific for the encointer protocol
     describe('encointer-worker', () => {
       describe('getTotalIssuance', () => {

packages/worker-api/src/worker.ts

@@ -17,7 +17,7 @@ import type {KeyringPair} from '@polkadot/keyring/types';
 import type {AccountId, Balance, Hash, Moment} from '@polkadot/types/interfaces/runtime';
 import type {
   Attestation,
-  BalanceTransferArgs,
+  BalanceTransferArgs, BalanceUnshieldArgs,
   CommunityIdentifier,
   MeetupIndexType,
   ParticipantIndexType,
@@ -244,6 +244,12 @@ export class EncointerWorker extends WebSocketAsPromised implements IEncointerWo
         return this.sendTrustedCall(call, shard, options);
   }
 
+  public async balanceUnshieldFunds(accountOrPubKey: KeyringPair | PubKeyPinPair, shard: ShardIdentifier, mrenclave: string, params: BalanceUnshieldArgs, options: CallOptions = {} as CallOptions): Promise<Hash> {
+    const nonce = await this.getNonce(accountOrPubKey, mrenclave, options);
+    const call = createTrustedCall(this, ['balance_unshield', 'BalanceUnshieldArgs'], accountOrPubKey, shard, mrenclave, nonce, params);
+    return this.sendTrustedCall(call, shard, options);
+  }
+
   async sendTrustedCall(call: TrustedCallSigned, shard: ShardIdentifier, options: CallOptions = {} as CallOptions):  Promise<Hash> {
     if (this.shieldingKey() == undefined) {
       const key = await this.getShieldingKey(options);