Create flag.go

flag.go

@@ -0,0 +1,30 @@
+package validator
+
+import (
+	"fmt"
+	"reflect"
+	"strings"
+
+	"golang.org/x/exp/slices"
+
+	"github.com/orcasecurity/shiftleft-cli/lib/utils"
+)
+
+type FlagDependencyValidator[T any] struct {
+}
+
+func (v FlagDependencyValidator[T]) Validate(cmdOptions T, dependentField string, dependencyField string, allowedValues []string) error {
+	cmd := reflect.ValueOf(cmdOptions)
+	dependentFieldValue := reflect.Indirect(cmd).FieldByName(dependentField)
+	dependencyFieldValue := reflect.Indirect(cmd).FieldByName(dependencyField)
+	if slices.Contains(allowedValues, "") && dependencyFieldValue.IsZero() {
+		return nil
+	}
+	allowedValues = utils.RemoveFromSlice(allowedValues, "")
+	if !dependentFieldValue.IsZero() && !slices.Contains(allowedValues, dependencyFieldValue.String()) {
+		allowedValues := strings.Join(allowedValues, ",")
+		return fmt.Errorf("input error - '%s' option can be used only with %s=%s", dependentField, dependencyField, allowedValues)
+	}
+
+	return nil
+}