add persistance function & userstate

Signed-off-by: Christian Richter <c.richter@opencloud.eu>

services/graph/pkg/userstate/userstate.go

@@ -0,0 +1,34 @@
+package userstate
+
+import (
+	"fmt"
+	"time"
+)
+
+const (
+	_ = iota
+	UserStateUnspecified
+	UserStateEnabled
+	UserStateDisabled
+	UserStateSoftDeleted
+)
+
+type UserState struct {
+	UserId          string        `json:"userid"`
+	State           uint8         `json:"state"`
+	TimeStamp       time.Time     `json:"timestamp,omitempty"`
+	RetentionPeriod time.Duration `json:"retentionPeriod,omitempty"`
+	Reason          string        `json:"reason,omitempty,omitempty"`
+}
+
+func IsValidUserState(us *UserState) (bool, error) {
+	if us.State == UserStateSoftDeleted {
+		if us.RetentionPeriod <= 0 {
+			return false, fmt.Errorf("retention period must be greater than 0 for soft deleted users")
+		}
+		if us.Reason == "" {
+			return false, fmt.Errorf("reason must be provided for soft deleted users")
+		}
+	}
+	return true, nil
+}