chore: move the go code into a subfolder

apps/api/internal/domain/machine_key.go

@@ -0,0 +1,76 @@
+package domain
+
+import (
+	"encoding/json"
+	"time"
+
+	"github.com/zitadel/zitadel/internal/eventstore/v1/models"
+	"github.com/zitadel/zitadel/internal/zerrors"
+)
+
+type MachineKey struct {
+	models.ObjectRoot
+
+	KeyID          string
+	Type           AuthNKeyType
+	ExpirationDate time.Time
+	PrivateKey     []byte
+	PublicKey      []byte
+}
+
+func (key *MachineKey) setPublicKey(publicKey []byte) {
+	key.PublicKey = publicKey
+}
+
+func (key *MachineKey) setPrivateKey(privateKey []byte) {
+	key.PrivateKey = privateKey
+}
+
+func (key *MachineKey) expirationDate() time.Time {
+	return key.ExpirationDate
+}
+
+func (key *MachineKey) setExpirationDate(expiration time.Time) {
+	key.ExpirationDate = expiration
+}
+
+func (key *MachineKey) Detail() ([]byte, error) {
+	if key.Type == AuthNKeyTypeJSON {
+		return key.MarshalJSON()
+	}
+	return nil, zerrors.ThrowPreconditionFailed(nil, "KEY-dsg52", "Errors.Internal")
+}
+
+func (key *MachineKey) MarshalJSON() ([]byte, error) {
+	return MachineKeyMarshalJSON(key.KeyID, key.PrivateKey, key.ExpirationDate, key.AggregateID)
+}
+
+type MachineKeyState int32
+
+const (
+	MachineKeyStateUnspecified MachineKeyState = iota
+	MachineKeyStateActive
+	MachineKeyStateRemoved
+
+	machineKeyStateCount
+)
+
+func (f MachineKeyState) Valid() bool {
+	return f >= 0 && f < machineKeyStateCount
+}
+
+func MachineKeyMarshalJSON(keyID string, privateKey []byte, expirationDate time.Time, userID string) ([]byte, error) {
+	return json.Marshal(struct {
+		Type           string    `json:"type"`
+		KeyID          string    `json:"keyId"`
+		Key            string    `json:"key"`
+		ExpirationDate time.Time `json:"expirationDate"`
+		UserID         string    `json:"userId"`
+	}{
+		Type:           "serviceaccount",
+		KeyID:          keyID,
+		Key:            string(privateKey),
+		ExpirationDate: expirationDate,
+		UserID:         userID,
+	})
+}