Add method to get token balance

StratisCore.UI/src/app/shared/models/local-execution-result.ts

@@ -0,0 +1,19 @@
+export class TransferInfo {
+    from: string;
+    to: string;
+    value: number;
+}
+
+export class Log {
+    address: string;
+    topics: string[];
+    data: string;
+}
+
+export class LocalExecutionResult {
+    gasConsumed: number;
+    revert: boolean;
+    return: any;
+    internalTransfers: TransferInfo[];
+    logs: Log[];
+}

StratisCore.UI/src/app/shared/services/api.service.ts

@@ -18,6 +18,7 @@ import { TransactionBuilding } from '../models/transaction-building';
 import { TransactionSending } from '../models/transaction-sending';
 import { NodeStatus } from '../models/node-status';
 import { WalletRescan } from '../models/wallet-rescan';
+import { LocalExecutionResult } from '@shared/models/local-execution-result';
 
 @Injectable({
   providedIn: 'root'
@@ -442,6 +443,12 @@ export class ApiService {
     );
   }
 
+  localCall(localCall: object): Observable<LocalExecutionResult> {    
+    return this.http.post<LocalExecutionResult>(this.stratisApiUrl + '/smartcontracts/local-call', localCall).pipe(
+      catchError(err => this.handleHttpError(err))
+    );
+  }
+
   private handleHttpError(error: HttpErrorResponse, silent?: boolean) {
     console.log(error);
     if (error.status === 0) {

StratisCore.UI/src/app/wallet/tokens/models/token-balance-request.ts

@@ -0,0 +1,14 @@
+export class TokenBalanceRequest {
+    contractAddress: string;
+    senderAddress: string;
+    methodName = "GetBalance";
+    amount = 0;
+    gasPrice = 100;
+    gasLimit = 100000;
+    parameters = [];
+
+    constructor(tokenAddress: string, senderAddress: string) {
+        this.contractAddress = tokenAddress;
+        this.senderAddress = senderAddress;
+    }
+}

StratisCore.UI/src/app/wallet/tokens/services/tokens.service.ts

@@ -6,6 +6,8 @@ import { ContractTransactionItem, SmartContractsContractItem } from '../../smart
 import { Result, ResultStatus } from '../models/Result';
 import { SavedToken, Token } from '../models/token';
 import { StorageService } from './storage.service';
+import { TokenBalanceRequest } from '../models/token-balance-request';
+import { map } from 'rxjs/operators';
 
 @Injectable()
 export class TokensService {
@@ -83,24 +85,13 @@ export class TokensService {
     return this.apiService.getAccountAddresses(walletName);
   }
 
-  GetContracts(walletName: string): Observable<SmartContractsContractItem[]> {
-    return of([
-      new SmartContractsContractItem('7809', 'Transfert', 'bbdbcae72f1085710', 'SdrP9wvxZmaG7t3UAjxxyB6RNT9FV1Z2Sn', 10898025),
-      new SmartContractsContractItem('7810', 'Transfert', 'bbdbcae72f1085710', 'SdrP9wvxZmaG7t3UAjxxyB6RNT9FV1Z2Sn', 11898025),
-      new SmartContractsContractItem('7811', 'Transfert', 'bbdbcae72f1085710', 'SdrP9wvxZmaG7t3UAjxxyB6RNT9FV1Z2Sn', 12898025),
-      new SmartContractsContractItem('7812', 'Transfert', 'bbdbcae72f1085710', 'SdrP9wvxZmaG7t3UAjxxyB6RNT9FV1Z2Sn', 13898025),
-      new SmartContractsContractItem('7813', 'Transfert', 'bbdbcae72f1085710', 'SdrP9wvxZmaG7t3UAjxxyB6RNT9FV1Z2Sn', 14898025),
-      new SmartContractsContractItem('7814', 'Transfert', 'bbdbcae72f1085710', 'SdrP9wvxZmaG7t3UAjxxyB6RNT9FV1Z2Sn', 15898025),
-    ]);
-  }
-
   GetSenderAddresses(walletName: string): Observable<string[]> {
     return of([
       'SarP7wvxZmaG7t1UAjaxyB6RNT9FV1Z2Sn',
       'SbrP8wvxZmaG7t2UAjbxyB7RNT9FV1Z2Sn',
       'ScrP9wvxZmaG7t3UAjcxyB8RNT9FV1Z2Sn'
     ]);
-  }
+  }  
 
   GetParameterTypes(walletName: string): Observable<string[]> {
     return of([
@@ -109,4 +100,10 @@ export class TokensService {
       'Type 3'
     ]);
   }
+
+  GetTokenBalance(request: TokenBalanceRequest): Observable<number> {
+    return this.apiService.localCall(request).pipe(
+      map(localExecutionresult => localExecutionresult.return ? localExecutionresult.return : 0)
+    );
+  }
 }