feat: fixes (#228)

* feat: user login names

* fix: user login names

* fix: generate login name

internal/org/model/org.go

@@ -2,8 +2,8 @@ package model
 
 import (
 	es_models "github.com/caos/zitadel/internal/eventstore/models"
-	"strings"
 	"github.com/golang/protobuf/ptypes/timestamp"
+	"strings"
 )
 
 type Org struct {
@@ -57,6 +57,15 @@ func (o *Org) ContainsDomain(domain *OrgDomain) bool {
 	return false
 }
 
+func (o *Org) GetPrimaryDomain() *OrgDomain {
+	for _, d := range o.Domains {
+		if d.Primary {
+			return d
+		}
+	}
+	return nil
+}
+
 func (o *Org) ContainsMember(userID string) bool {
 	for _, member := range o.Members {
 		if member.UserID == userID {