splitted one operator module to file, account, image operators; splitted operator functions; etc

app/accoper/listgrant.go

@@ -0,0 +1,56 @@
+package accoper
+
+import (
+	"context"
+	"fmt"
+
+	"mstore/pkg/descr"
+)
+
+// ListGrants
+type ListGrantsParams struct {
+	Username  string
+	AccountID string
+}
+type ListGrantsResult struct {
+	Grants []descr.Grant `json:"grants"`
+}
+
+func (oper *Operator) ListGrants(ctx context.Context, operatorID string, params *ListGrantsParams) (*ListGrantsResult, error) {
+	var err error
+	res := &ListGrantsResult{
+		Grants: make([]descr.Grant, 0),
+	}
+	var accountDescr *descr.Account
+	var accountExists bool
+	switch {
+	case params.AccountID != "":
+		accountExists, accountDescr, err = oper.mdb.GetAccountByID(ctx, params.AccountID)
+		if err != nil {
+			return res, err
+		}
+		if !accountExists {
+			err := fmt.Errorf("Account with ID %s dont exists", params.AccountID)
+			return res, err
+		}
+	case params.Username != "":
+		accountExists, accountDescr, err = oper.mdb.GetAccountByUsername(ctx, params.Username)
+		if err != nil {
+			return res, err
+		}
+		if !accountExists {
+			err := fmt.Errorf("Account with name %s dont exists", params.Username)
+			return res, err
+		}
+	default:
+		err := fmt.Errorf("Empty username and accountId parameter")
+		return res, err
+	}
+	accountID := accountDescr.ID
+	grantDescrs, err := oper.mdb.ListGrantsByAccountID(ctx, accountID)
+	if err != nil {
+		return res, err
+	}
+	res.Grants = grantDescrs
+	return res, err
+}