Add Balance Api

internal/services/balance/balance.go

@@ -0,0 +1,34 @@
+package balance
+
+import (
+	"context"
+	"furtuna-be/internal/common/logger"
+	"furtuna-be/internal/entity"
+	"furtuna-be/internal/repository"
+
+	"go.uber.org/zap"
+)
+
+type BalanceService struct {
+	repo repository.WalletRepository
+}
+
+func NewBalanceService(repo repository.WalletRepository) *BalanceService {
+	return &BalanceService{
+		repo: repo,
+	}
+}
+
+func (s *BalanceService) GetByID(ctx context.Context, id int64) (*entity.Balance, error) {
+	balanceDB, err := s.repo.GetByPartnerID(ctx, nil, id)
+	if err != nil {
+		logger.ContextLogger(ctx).Error("error when get branch by id", zap.Error(err))
+		return nil, err
+	}
+
+	return &entity.Balance{
+		PartnerID:   id,
+		Balance:     balanceDB.Balance,
+		AuthBalance: balanceDB.AuthBalance,
+	}, nil
+}