From 5022362c1ac9b9cbfb77d8431c8f55c2f5e79efd Mon Sep 17 00:00:00 2001
From: Leonard Lyubich <leonard@nspcc.ru>
Date: Sat, 22 Aug 2020 18:20:12 +0300
Subject: [PATCH] [#11] accounting: Implement ServiceExecutor on Neo:Morph
 client

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
---
 pkg/services/accounting/morph/executor.go | 54 +++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 pkg/services/accounting/morph/executor.go

diff --git a/pkg/services/accounting/morph/executor.go b/pkg/services/accounting/morph/executor.go
new file mode 100644
index 000000000..a79a2a323
--- /dev/null
+++ b/pkg/services/accounting/morph/executor.go
@@ -0,0 +1,54 @@
+package accounting
+
+import (
+	"context"
+
+	"github.com/nspcc-dev/neofs-api-go/v2/accounting"
+	"github.com/nspcc-dev/neofs-node/pkg/morph/client/balance"
+	accountingSvc "github.com/nspcc-dev/neofs-node/pkg/services/accounting"
+	"github.com/pkg/errors"
+)
+
+type morphExecutor struct {
+	// TODO: use client wrapper
+	client *balance.Client
+}
+
+func NewExecutor(client *balance.Client) accountingSvc.ServiceExecutor {
+	return &morphExecutor{
+		client: client,
+	}
+}
+
+func (s *morphExecutor) Balance(ctx context.Context, body *accounting.BalanceRequestBody) (*accounting.BalanceResponseBody, error) {
+	id := body.GetOwnerID()
+
+	idBytes, err := id.StableMarshal(nil)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not marshal wallet owner ID")
+	}
+
+	argsBalance := balance.GetBalanceOfArgs{}
+	argsBalance.SetWallet(idBytes)
+
+	vBalance, err := s.client.BalanceOf(argsBalance)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not call BalanceOf method")
+	}
+
+	argsDecimals := balance.DecimalsArgs{}
+
+	vDecimals, err := s.client.Decimals(argsDecimals)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not call decimals method")
+	}
+
+	dec := new(accounting.Decimal)
+	dec.SetValue(vBalance.Amount())
+	dec.SetPrecision(uint32(vDecimals.Decimals()))
+
+	res := new(accounting.BalanceResponseBody)
+	res.SetBalance(dec)
+
+	return res, nil
+}