--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pkg/models/scheduler.go	Thu Dec 13 18:08:17 2018 +0100
@@ -0,0 +1,63 @@
+// This is Free Software under GNU Affero General Public License v >= 3.0
+// without warranty, see README.md and license for details.
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+// License-Filename: LICENSES/AGPL-3.0.txt
+//
+// Copyright (C) 2018 by via donau
+//   – Österreichische Wasserstraßen-Gesellschaft mbH
+// Software engineering by Intevation GmbH
+//
+// Author(s):
+//  * Sascha L. Teichmann <sascha.teichmann@intevation.de>
+
+package models
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"github.com/robfig/cron"
+
+	"gemma.intevation.de/gemma/pkg/scheduler"
+)
+
+type (
+	CronSpec   string
+	ImportKind string
+
+	ImportConfig struct {
+		Kind       ImportKind `json:"kind"`
+		Cron       CronSpec   `json:"cron"`
+		SendEMail  bool       `json:"send-email"`
+		AutoAccept bool       `json:"auto-accept"`
+		URL        *string    `json:"url"`
+	}
+)
+
+func (ik *ImportKind) UnmarshalJSON(data []byte) error {
+	var s string
+	if err := json.Unmarshal(data, &s); err != nil {
+		return err
+	}
+
+	if !scheduler.HasAction(s) {
+		return fmt.Errorf("Unknown kind '%s'", s)
+	}
+
+	*ik = ImportKind(s)
+
+	return nil
+}
+
+func (cs *CronSpec) UnmarshalJSON(data []byte) error {
+	var spec string
+	if err := json.Unmarshal(data, &spec); err != nil {
+		return err
+	}
+	if _, err := cron.Parse(spec); err != nil {
+		return err
+	}
+	*cs = CronSpec(spec)
+	return nil
+}