added the CheckAliasAddress function to the account service and test mocks

internal/testutil/mocks/servicemock.go

@@ -47,3 +47,8 @@ func (m *MockAccountService) TokenTransfer(ctx context.Context, amount, from, to
 	args := m.Called()
 	return args.Get(0).(*models.TokenTransferResponse), args.Error(1)
 }
+
+func (m *MockAccountService) CheckAliasAddress(ctx context.Context, alias string) (*dataserviceapi.AliasAddress, error) {
+	args := m.Called()
+	return args.Get(0).(*dataserviceapi.AliasAddress), args.Error(1)
+}

internal/testutil/testservice/TestAccountService.go

@@ -33,8 +33,8 @@ func (tas *TestAccountService) TrackAccountStatus(ctx context.Context, publicKey
 }
 
 func (tas *TestAccountService) FetchVouchers(ctx context.Context, publicKey string) ([]dataserviceapi.TokenHoldings, error) {
-	return []dataserviceapi.TokenHoldings {
+	return []dataserviceapi.TokenHoldings{
-		dataserviceapi.TokenHoldings {
+		dataserviceapi.TokenHoldings{
 			ContractAddress: "0x6CC75A06ac72eB4Db2eE22F781F5D100d8ec03ee",
 			TokenSymbol:     "SRF",
 			TokenDecimals:   "6",
@@ -56,3 +56,7 @@ func (tas *TestAccountService) TokenTransfer(ctx context.Context, amount, from,
 		TrackingId: "e034d147-747d-42ea-928d-b5a7cb3426af",
 	}, nil
 }
+
+func (m TestAccountService) CheckAliasAddress(ctx context.Context, alias string) (*dataserviceapi.AliasAddress, error) {
+	return &dataserviceapi.AliasAddress{}, nil
+}

remote/accountservice.go

@@ -24,6 +24,7 @@ type AccountServiceInterface interface {
 	FetchTransactions(ctx context.Context, publicKey string) ([]dataserviceapi.Last10TxResponse, error)
 	VoucherData(ctx context.Context, address string) (*models.VoucherDataResult, error)
 	TokenTransfer(ctx context.Context, amount, from, to, tokenAddress string) (*models.TokenTransferResponse, error)
+	CheckAliasAddress(ctx context.Context, alias string) (*dataserviceapi.AliasAddress, error)
 }
 
 type AccountService struct {
@@ -209,6 +210,26 @@ func (as *AccountService) TokenTransfer(ctx context.Context, amount, from, to, t
 	return &r, nil
 }
 
+// CheckAliasAddress retrieves the address of an alias from the API endpoint.
+// Parameters:
+//   - alias: The alias of the user.
+func (as *AccountService) CheckAliasAddress(ctx context.Context, alias string) (*dataserviceapi.AliasAddress, error) {
+	var r dataserviceapi.AliasAddress
+
+	ep, err := url.JoinPath(config.CheckAliasURL, alias)
+	if err != nil {
+		return nil, err
+	}
+
+	req, err := http.NewRequest("GET", ep, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	_, err = doRequest(ctx, req, &r)
+	return &r, err
+}
+
 func doRequest(ctx context.Context, req *http.Request, rcpt any) (*api.OKResponse, error) {
 	var okResponse api.OKResponse
 	var errResponse api.ErrResponse