feat: custom domain feature (#1618)

* fix: custom domain

* fix: custom domain

* fix: custom domain

* fix: custom domain feature in proto

* fix: remove custom domains on feature downgrade

* fix test

* fix: custom domain feature in proto

* ensure tests work

Co-authored-by: fabi <fabienne.gerschwiler@gmail.com>

internal/domain/features.go

@@ -15,6 +15,7 @@ const (
 	FeatureLoginPolicyUsernameLogin = FeatureLoginPolicy + ".username_login"
 	FeaturePasswordComplexityPolicy = "password_complexity_policy"
 	FeatureLabelPolicy              = "label_policy"
+	FeatureCustomDomain             = "custom_domain"
 )
 
 type Features struct {
@@ -34,6 +35,7 @@ type Features struct {
 	LoginPolicyUsernameLogin bool
 	PasswordComplexityPolicy bool
 	LabelPolicy              bool
+	CustomDomain             bool
 }
 
 type FeaturesState int32

internal/domain/org.go

@@ -1,8 +1,6 @@
 package domain
 
 import (
-	"strings"
-
 	"github.com/caos/zitadel/internal/eventstore/v1/models"
 )
 
@@ -29,11 +27,7 @@ func (o *Org) IsValid() bool {
 }
 
 func (o *Org) AddIAMDomain(iamDomain string) {
-	o.Domains = append(o.Domains, &OrgDomain{Domain: o.nameForDomain(iamDomain), Verified: true, Primary: true})
-}
-
-func (o *Org) nameForDomain(iamDomain string) string {
-	return strings.ToLower(strings.ReplaceAll(o.Name, " ", "-") + "." + iamDomain)
+	o.Domains = append(o.Domains, &OrgDomain{Domain: NewIAMDomainName(o.Name, iamDomain), Verified: true, Primary: true})
 }
 
 type OrgState int32

internal/domain/org_domain.go

@@ -1,6 +1,8 @@
 package domain
 
 import (
+	"strings"
+
 	http_util "github.com/caos/zitadel/internal/api/http"
 	"github.com/caos/zitadel/internal/crypto"
 	"github.com/caos/zitadel/internal/eventstore/v1/models"
@@ -29,6 +31,10 @@ func (domain *OrgDomain) GenerateVerificationCode(codeGenerator crypto.Generator
 	return validationCode, nil
 }
 
+func NewIAMDomainName(orgName, iamDomain string) string {
+	return strings.ToLower(strings.ReplaceAll(orgName, " ", "-") + "." + iamDomain)
+}
+
 type OrgDomainValidationType int32
 
 const (