feat: device authorization RFC 8628 (#5646)

* device auth: implement the write events

* add grant type device code

* fix(init): check if default value implements stringer

---------

Co-authored-by: adlerhurst <silvan.reusser@gmail.com>

internal/command/device_auth_model.go

@@ -0,0 +1,61 @@
+package command
+
+import (
+	"time"
+
+	"github.com/zitadel/zitadel/internal/domain"
+	"github.com/zitadel/zitadel/internal/eventstore"
+	"github.com/zitadel/zitadel/internal/repository/deviceauth"
+)
+
+type DeviceAuthWriteModel struct {
+	eventstore.WriteModel
+
+	ClientID   string
+	DeviceCode string
+	UserCode   string
+	Expires    time.Time
+	Scopes     []string
+	Subject    string
+	State      domain.DeviceAuthState
+}
+
+func NewDeviceAuthWriteModel(aggrID, resourceOwner string) *DeviceAuthWriteModel {
+	return &DeviceAuthWriteModel{
+		WriteModel: eventstore.WriteModel{
+			AggregateID:   aggrID,
+			ResourceOwner: resourceOwner,
+		},
+	}
+}
+
+func (m *DeviceAuthWriteModel) Reduce() error {
+	for _, event := range m.Events {
+		switch e := event.(type) {
+		case *deviceauth.AddedEvent:
+			m.ClientID = e.ClientID
+			m.DeviceCode = e.DeviceCode
+			m.UserCode = e.UserCode
+			m.Expires = e.Expires
+			m.Scopes = e.Scopes
+			m.State = e.State
+		case *deviceauth.ApprovedEvent:
+			m.Subject = e.Subject
+			m.State = domain.DeviceAuthStateApproved
+		case *deviceauth.CanceledEvent:
+			m.State = e.Reason.State()
+		case *deviceauth.RemovedEvent:
+			m.State = domain.DeviceAuthStateRemoved
+		}
+	}
+
+	return m.WriteModel.Reduce()
+}
+
+func (m *DeviceAuthWriteModel) Query() *eventstore.SearchQueryBuilder {
+	return eventstore.NewSearchQueryBuilder(eventstore.ColumnsEvent).
+		AddQuery().
+		AggregateTypes(deviceauth.AggregateType).
+		AggregateIDs(m.AggregateID).
+		Builder()
+}