chore: move the go code into a subfolder

apps/api/internal/domain/device_auth.go

@@ -0,0 +1,68 @@
+package domain
+
+import (
+	"strconv"
+)
+
+// DeviceAuthState describes the step the
+// the device authorization process is in.
+// We generate the Stringer implementation for prettier
+// log output.
+//
+//go:generate stringer -type=DeviceAuthState -linecomment
+type DeviceAuthState uint
+
+const (
+	DeviceAuthStateUndefined DeviceAuthState = iota // undefined
+	DeviceAuthStateInitiated                        // initiated
+	DeviceAuthStateApproved                         // approved
+	DeviceAuthStateDenied                           // denied
+	DeviceAuthStateExpired                          // expired
+	DeviceAuthStateDone                             // done
+
+	deviceAuthStateCount // invalid
+)
+
+// Exists returns true when not Undefined and
+// any status lower than deviceAuthStateCount.
+func (s DeviceAuthState) Exists() bool {
+	return s > DeviceAuthStateUndefined && s < deviceAuthStateCount
+}
+
+// Done returns true when DeviceAuthState is Approved.
+// This implements the OIDC interface requirement of "Done"
+func (s DeviceAuthState) Done() bool {
+	return s == DeviceAuthStateApproved
+}
+
+// Denied returns true when DeviceAuthState is Denied, Expired or Removed.
+// This implements the OIDC interface requirement of "Denied".
+func (s DeviceAuthState) Denied() bool {
+	return s >= DeviceAuthStateDenied
+}
+
+func (s DeviceAuthState) GoString() string {
+	return strconv.Itoa(int(s))
+}
+
+// DeviceAuthCanceled is a subset of DeviceAuthState, allowed to
+// be used in the deviceauth.CanceledEvent.
+// The string type is used to make the eventstore more readable
+// on the reason of cancelation.
+type DeviceAuthCanceled string
+
+const (
+	DeviceAuthCanceledDenied  = "denied"
+	DeviceAuthCanceledExpired = "expired"
+)
+
+func (c DeviceAuthCanceled) State() DeviceAuthState {
+	switch c {
+	case DeviceAuthCanceledDenied:
+		return DeviceAuthStateDenied
+	case DeviceAuthCanceledExpired:
+		return DeviceAuthStateExpired
+	default:
+		return DeviceAuthStateUndefined
+	}
+}