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/repository/eventsourcing/model/domain.go

@@ -0,0 +1,120 @@
+package model
+
+import (
+	"encoding/json"
+	"github.com/caos/zitadel/internal/errors"
+	es_models "github.com/caos/zitadel/internal/eventstore/models"
+	"github.com/caos/zitadel/internal/org/model"
+)
+
+type OrgDomain struct {
+	es_models.ObjectRoot `json:"-"`
+
+	Domain   string `json:"domain"`
+	Verified bool   `json:"-"`
+	Primary  bool   `json:"-"`
+}
+
+func GetDomain(domains []*OrgDomain, domain string) (int, *OrgDomain) {
+	for i, d := range domains {
+		if d.Domain == domain {
+			return i, d
+		}
+	}
+	return -1, nil
+}
+
+func (o *Org) appendAddDomainEvent(event *es_models.Event) error {
+	domain := new(OrgDomain)
+	err := domain.SetData(event)
+	if err != nil {
+		return err
+	}
+	domain.ObjectRoot.CreationDate = event.CreationDate
+	o.Domains = append(o.Domains, domain)
+	return nil
+}
+
+func (o *Org) appendRemoveDomainEvent(event *es_models.Event) error {
+	domain := new(OrgDomain)
+	err := domain.SetData(event)
+	if err != nil {
+		return err
+	}
+	if i, r := GetDomain(o.Domains, domain.Domain); r != nil {
+		o.Domains[i] = o.Domains[len(o.Domains)-1]
+		o.Domains[len(o.Domains)-1] = nil
+		o.Domains = o.Domains[:len(o.Domains)-1]
+	}
+	return nil
+}
+
+func (o *Org) appendVerifyDomainEvent(event *es_models.Event) error {
+	domain := new(OrgDomain)
+	err := domain.SetData(event)
+	if err != nil {
+		return err
+	}
+	if i, d := GetDomain(o.Domains, domain.Domain); d != nil {
+		d.Verified = true
+		o.Domains[i] = d
+	}
+	return nil
+}
+
+func (o *Org) appendPrimaryDomainEvent(event *es_models.Event) error {
+	domain := new(OrgDomain)
+	err := domain.SetData(event)
+	if err != nil {
+		return err
+	}
+	for _, d := range o.Domains {
+		d.Primary = false
+		if d.Domain == domain.Domain {
+			d.Primary = true
+		}
+	}
+	return nil
+}
+
+func (m *OrgDomain) SetData(event *es_models.Event) error {
+	err := json.Unmarshal(event.Data, m)
+	if err != nil {
+		return errors.ThrowInternal(err, "EVENT-Hz7Mb", "unable to unmarshal data")
+	}
+	return nil
+}
+
+func OrgDomainsFromModel(domains []*model.OrgDomain) []*OrgDomain {
+	convertedDomainss := make([]*OrgDomain, len(domains))
+	for i, m := range domains {
+		convertedDomainss[i] = OrgDomainFromModel(m)
+	}
+	return convertedDomainss
+}
+
+func OrgDomainFromModel(domain *model.OrgDomain) *OrgDomain {
+	return &OrgDomain{
+		ObjectRoot: domain.ObjectRoot,
+		Domain:     domain.Domain,
+		Verified:   domain.Verified,
+		Primary:    domain.Primary,
+	}
+}
+
+func OrgDomainsToModel(domains []*OrgDomain) []*model.OrgDomain {
+	convertedDomains := make([]*model.OrgDomain, len(domains))
+	for i, m := range domains {
+		convertedDomains[i] = OrgDomainToModel(m)
+	}
+	return convertedDomains
+}
+
+func OrgDomainToModel(domain *OrgDomain) *model.OrgDomain {
+	return &model.OrgDomain{
+		ObjectRoot: domain.ObjectRoot,
+		Domain:     domain.Domain,
+		Verified:   domain.Verified,
+		Primary:    domain.Primary,
+	}
+}