feat: multiple domains (#188)

* check uniqueness on create and register user

* change user email, reserve release unique email

* usergrant unique aggregate

* usergrant uniqueness

* validate UserGrant

* fix tests

* domain is set on username in all orgs

* domain in admin

* org domain sql

* zitadel domain org name

* org domains

* org iam policy

* default org iam policy

* SETUP

* load login names

* login by login name

* login name

* fix: merge master

* fix: merge master

* Update internal/user/repository/eventsourcing/user.go

Co-authored-by: Livio Amstutz <livio.a@gmail.com>

* fix: fix unique domains

* fix: rename env variable

Co-authored-by: adlerhurst <silvan.reusser@gmail.com>
Co-authored-by: Livio Amstutz <livio.a@gmail.com>

internal/org/model/org.go

@@ -2,17 +2,19 @@ package model
 
 import (
 	es_models "github.com/caos/zitadel/internal/eventstore/models"
+	"strings"
 	"github.com/golang/protobuf/ptypes/timestamp"
 )
 
 type Org struct {
 	es_models.ObjectRoot
 
-	State  OrgState
-	Name   string
-	Domain string
+	State   OrgState
+	Name    string
+	Domains []*OrgDomain
 
-	Members []*OrgMember
+	Members      []*OrgMember
+	OrgIamPolicy *OrgIamPolicy
 }
 type OrgChanges struct {
 	Changes      []*OrgChange
@@ -43,7 +45,16 @@ func (o *Org) IsActive() bool {
 }
 
 func (o *Org) IsValid() bool {
-	return o.Name != "" && o.Domain != ""
+	return o.Name != ""
+}
+
+func (o *Org) ContainsDomain(domain *OrgDomain) bool {
+	for _, d := range o.Domains {
+		if d.Domain == domain.Domain {
+			return true
+		}
+	}
+	return false
 }
 
 func (o *Org) ContainsMember(userID string) bool {
@@ -54,3 +65,11 @@ func (o *Org) ContainsMember(userID string) bool {
 	}
 	return false
 }
+
+func (o *Org) nameForDomain(iamDomain string) string {
+	return strings.ToLower(strings.ReplaceAll(o.Name, " ", "-") + "." + iamDomain)
+}
+
+func (o *Org) AddIAMDomain(iamDomain string) {
+	o.Domains = append(o.Domains, &OrgDomain{Domain: o.nameForDomain(iamDomain), Verified: true, Primary: true})
+}